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Aluminum Refining & Manufacturing: Aluminum (Aluminium) 1941 Office of Production Management
 
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more at http://scitech.quickfound.net/ "Shows the making of aluminum from the mining of the ore [bauxite mining] to its use in airplanes. Bauxite is mined in Dutch Guiana, shipped to the U.S. and processed in an aluminum plant. The ore is changed from rock to liquid and then to metal. Shows the rolling of long sheets of the metals Shows the construction of new aluminum plants, dams and power plants, and rolling mills--all essential for aluminum production. Includes many brief shots of military airplanes." see also: "Aluminum on the March" 1956 Reynolds http://www.youtube.com/watch?v=-EujDjXSN-Q "Dateline Tomorrow" Alcoa http://www.youtube.com/watch?v=oMYqfirqsic Reupload of a previously uploaded film with improved video & sound. Public domain film from the US National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied. The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original). http://creativecommons.org/licenses/by-sa/3.0/ http://en.wikipedia.org/wiki/Aluminium Aluminium or aluminum... is a silvery white member of the boron group of chemical elements. It has the symbol Al, and its atomic number is 13. It is not soluble in water under normal circumstances. Aluminium is the third most abundant element (after oxygen and silicon), and the most abundant metal, in the Earth's crust. It makes up about 8% by weight of the Earth's solid surface... The chief ore of aluminium is bauxite. Aluminium is remarkable for the metal's low density and for its ability to resist corrosion due to the phenomenon of passivation. Structural components made from aluminium and its alloys are vital to the aerospace industry and are important in other areas... Despite its prevalence in the environment, aluminium salts are not known to be used by any form of life. In keeping with its pervasiveness, aluminium is well tolerated by plants and animals. Due to their prevalence, potential beneficial (or otherwise) biological roles of aluminium compounds are of continuing interest. Physical Aluminium is a soft, durable, lightweight, ductile and malleable metal with appearance ranging from silvery to dull gray, depending on the surface roughness. Aluminium is nonmagnetic and does not easily ignite. A fresh film of aluminium film serves as a good reflector (approximately 92%) of visible light and an excellent reflector (as much as 98%) of medium and far infrared radiation... Aluminium has about one-third the density and stiffness of steel. It is easily machined, cast, drawn and extruded. Corrosion resistance can be excellent due to a thin surface layer of aluminium oxide that forms when the metal is exposed to air, effectively preventing further oxidation. The strongest aluminium alloys are less corrosion resistant due to galvanic reactions with alloyed copper. This corrosion resistance is also often greatly reduced when many aqueous salts are present, particularly in the presence of dissimilar metals. Aluminium atoms are arranged in a face-centered cubic (fcc) structure... Aluminium is one of the few metals that retain full silvery reflectance in finely powdered form, making it an important component of silver-colored paints... Aluminium forms strong chemical bonds with oxygen. Compared to most other metals, it is difficult to extract from ore, such as bauxite, due to the energy required to reduce aluminium oxide (Al2O3). For example, direct reduction with carbon, as is used to produce iron, is not chemically possible because aluminium is a stronger reducing agent than carbon. Indirect carbothermic reduction can be carried out using carbon and Al2O3, which forms an intermediate Al4C3 and this can further yield aluminium metal at a temperature of 1900--2000 °C. This process is still under development; it requires less energy and yields less CO2 than the Hall-Héroult process, the major industrial process for aluminium extraction. Because of the high melting point of aluminium oxide (about 2,000 °C (3,600 °F)) the pure metal is extracted by electrolysis. In this process, aluminium oxide is dissolved in molten cryolite with calcium fluoride and then reduced to aluminium at a temperature between 950 and 980 °C (1,740 to 1,800 °F). Cryolite is a chemical compound of aluminium and sodium fluorides: (Na3AlF6). Although cryolite is found as a mineral in Greenland, its synthetic form is used in the industry. The aluminium oxide is obtained by refining bauxite in the Bayer process. The electrolytic process replaced the Wöhler process, which involved the reduction of anhydrous aluminium chloride with potassium....
Views: 3047 Jeff Quitney
Bauxite
 
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The Bayer process is the principal industrial means of refining bauxite to produce alumina . Bauxite, the most important ore of aluminium, contains only 30–60% aluminium oxide, alumina, the rest being a mixture of silica, various iron oxides, and titanium dioxide.
Views: 440 Chemistry CFS
Simple method to determine specific gravity or particle density
 
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A balance (scale), string, and a glass can be used to determine the specific gravity of rocks.
Views: 66728 DrDirtSoilVideos
How to extract aluminium by electrolysis | Chemistry for All | FuseSchool
 
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Aluminium is the most abundant metal on Earth. However, it is expensive because a lot of electricity is used to extract it. Bauxite is the aluminium ore. It is purified to yield aluminium oxide, which is a white powder. Aluminium is then extracted from aluminium oxide by electrolysis. The aluminium oxide must be made molten so that the ions can pass through it during electrolysis. Aluminium oxide has a very high melting point - over 2000 degrees celsius. So instead of trying to melt it, the aluminium oxide is dissolved in molten cryolite. Cryolite is an aluminium compound with a much lower melting point than aluminium oxide, and so using this reduces some of the costs in extracting aluminium. The steel case is coated with graphite, providing the negative cathode. The positive anodes are immersed in the molten cryolite, and are also made of graphite. When the battery is turned on and electricity flows, the aluminium forms at the negative cathode and sinks to the bottom of the tank where is is tapped off as a pure liquid metal. Oxygen forms at the positive anodes. The oxygen reacts with the carbon of the graphite, forming carbon dioxide. The positive anode therefore burns away, and needs replacing regularly. This is another reason for the extraction of aluminium being so expensive. SUBSCRIBE to the FuseSchool YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. VISIT us at www.fuseschool.org, where all of our videos are carefully organised into topics and specific orders, and to see what else we have on offer. Comment, like and share with other learners. You can both ask and answer questions, and teachers will get back to you. These videos can be used in a flipped classroom model or as a revision aid. Find all of our Chemistry videos here: https://www.youtube.com/watch?v=cRnpKjHpFyg&list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV Find all of our Biology videos here: https://www.youtube.com/watch?v=tjkHzEVcyrE&list=PLW0gavSzhMlQYSpKryVcEr3ERup5SxHl0 Find all of our Maths videos here: https://www.youtube.com/watch?v=hJq_cdz_L00&list=PLW0gavSzhMlTyWKCgW1616v3fIywogoZQ Twitter: https://twitter.com/fuseSchool Access a deeper Learning Experience in the FuseSchool platform and app: www.fuseschool.org Follow us: http://www.youtube.com/fuseschool Friend us: http://www.facebook.com/fuseschool This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: [email protected]
Mod-01 Lec-10 Introduction to Mineral Beneficiation
 
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Materials and Energy Balance in Metallurgical Processes by Prof. S. C. Koria, Department of Materials Science & Engineering, IIT Kanpur For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 11306 nptelhrd
How aluminium is extracted by electrolysis
 
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Properties and uses of aluminium. Properties: Conducts heat and electricity well. It has a low density for a metal. It does not corrode. Uses: Aeroplanes, window frames, foil, drinks cans, electricity cables and pans. Where does aluminium come from? Aluminium is extracted from its ore bauxite. Bauxite is mainly aluminium oxide. Formula Al2O3 Why is electrolysis used? Where is aluminium in the reactivity series? Near the top. It is quite a reactive metal. Why is electrolysis used? Why can’t it be extracted using carbon? It is more reactive than carbon and so carbon cannot remove the oxygen (reduction). Key features of the electrolysis of aluminium oxide. Aluminium oxide is molten. Oxygen is formed at the graphite anode. The anodes are gradually worn away by oxidation. Aluminium is formed at the graphite cathode. The process has a high electrical energy requirement. Electrolysis of aluminium oxide Electrolysis of Aluminium Oxide Electrode reactions. At the cathode: Al3+ + 3e-  Al Aluminium ions are reduced (gain electrons) to aluminium atoms . At the anode: 2O2- - 4e-  O2 Oxygen ions are oxidised (lose electrons) to oxygen molecules. Understanding the process. Why must the aluminium oxide be molten? Why are the anodes gradually worn away? Why is cryolite used? Why is aluminium expensive? Answers The aluminium oxide must be molten for electrolysis to take place. When molten the ions are free to move, in the solid form they are fixed. The oxygen formed at the anode reacts with the carbon anode to from carbon dioxide. Answers Cryolite lowers the melting point and so saves energy. The electrolytic process requires a lot of electrical energy. Most aluminium extraction plants are located near power stations, usually hydroelectric plants.
Views: 14300 SliderBank
Natve Copper, Tungsten Ore, Aluminum Ore and More Unknown
 
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Ore and minerals found in the mid west USA
Views: 59 Alexis Boyce
Mod-01 Lec-15 Lecture-15-Extraction Aluminium
 
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Non-ferrous Extractive Metallurgy by Prof.H.S. Ray,Department of Metallurgical & Materials Engineering,IIT Kharagpur.For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 4579 nptelhrd
Aluminium and Titanium
 
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Aluminium and Titanium Aluminum Titanium Titanium Dioxide These are two metals with a low density which means they are aluminum compound lightweight for their size. titanium element why does titanium cost more than iron to extract Aluminium is used for aircraft, trains, overhead power cables, saucepans and cooking foil. Titanium, when pure, is a lustrous, white metal. The metal burns in air and is the only element that burns in nitrogen. It is marvellous in fireworks. Aluminium and Titanium resist corrosion as they have a very thin layer of their oxides on the surface, which stops air and water getting to the metal. Extraction Unlike iron, aluminium and titanium cannot be extracted from their oxides by reduction with carbon because: Aluminium is more reactive than carbon, so the reaction does not work. Titanium forms titanium carbide with carbon, which makes the metal brittle. In order to isolate pure aluminium, impurities must be removed from the bauxite. This is done by the Bayer process, which involves treatment with sodium hydroxide solution, followed by purification using electrolysis. Aluminium is mined in huge scales as bauxite. This involves the action of chlorine and carbon on the titanium ore followed by fractional distillation and then reduction with magnesium. Titanium is isolated using the Kroll method. Cost Aluminium extraction is expensive because the process needs a lot of electrical energy. Titanium extraction is expensive because the process involves several stages and a lot of energy. This especially limits the uses of titanium. Summary Aluminium and Titanium both have a low density which means they are lightweight for their size. They resist corrosion. They cannot be extracted byreduction. Extraction is expensive because there are several stages involved and the processes require a lot of energy.
Views: 661 SliderBase
super thin mill
 
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Ultrafine mill Overview : http://crusher.chinashibang.com/product/t130x_reinforced_ultrafine_mill.html Get Price: http://crusher.chinashibang.com/contact_us/ Ultrafine mill is mainly used in processing materials of metallurgy, building construction, chemicals and mining industry, such as feldspar, calcite, talc, barite, fluorite earth, ceramic , bauxite, phosphate rock, iron oxide, slag, clinker, chemical fertilizers, compound fertilizers, fly ash, coal, coke, lignite, gypsum, graphite, etc. Features: Adopt flexible connection between the mainframe and the classifier, avoiding too much vibrating Using Germany Flender reducer ensure that it has reliable performance. Classifier applies high-density blade and it is easy to adjust the by equipping frequency control system. Applying dust bypass collector, it won't bring environment pollution. Optimized design make powder centralized collection and packing become easy.
Views: 51 Zhao Gloria
Book 1- Fundamental of Human Geography - Primary Activities - 12th Class Geography - NCERT - CBSE
 
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The video is about the Primary activities from Book -1 Fundamental of Human Geography . Syllabus for Geography 12th Class A. Fundamentals of Human Geography Unit 1: Human Geography: Nature and Scope Unit 2: People Population-distribution,density and growth Population change-spatial patterns and structure; determinants of population change; Age-sex ratio; rural-urban composition; Human development - concept; selected indicators, international comparisons Unit 3: Human Activities Primary activities - concept and changing trends; gathering, pastoral, mining, subsistence agriculture, modern agriculture; people engaged in agricultural and allied activities - some examples from selected countries. Secondary activities-concept; manufacturing: types - household, small scale, large scale; agro based and mineral based industries; people engaged in secondary activities - some examples from selected countries. Tertiary activities-concept; trade, transport and tourism; services; people engaged in tertiary activities - some examples from selected countries. Quatenary activities - concept; people engaged in quatenary activities - case study from selected countries. Unit 4: Transport, Communication & Trade Land transport - roads, railways; trans-continental railways. Water transport - inland waterways; major ocean routes. Air transport - Intercontinental air routes. Oil and gas pipelines. Satellite communication and cyber space- Importance and usage for geographical information; use of GPS. International trade-Bases and changing patterns; ports as gateways of international trade, role of WTO in International trade. Ocean: National rights and international treaties. Unit 5: Human settlements Settlement types - rural and urban; morphology of cities (case study); distribution of mega cities; problems of human settlements in developing countries. Map Work Map Work on identification of features based on 1-5 units on the outline/Physical/Political map of World. B. India: People and Economy Unit 6: People Population: distribution, density and growth; composition of population - linguistic, religious; sex, rural-urban and occupational-regional variations in growth of population. Migration: international, national-causes and consequences. Human development: selected indicators and regional patterns. Population, environment and development. Unit 7: Human Settlements Rural settlements - types and distribution. Urban settlements - types, distribution and functional classification. Unit 8: Resources and Development Land resources - general land use; agricultural land use, Geographical conditions and distribution of major crops (Wheat, Rice, Tea, Coffee, Cotton, Jute, Sugarcane and Rubber), agricultural development and problems. Water resources - availability and utilization-irrigation, domestic, industrial and other uses; scarcity of water and conservation methods -rain water harvesting and watershed management. Mineral and energy resources - distribution of metallic (Iron ore, Copper, Bauxite, Manganese); non-metallic (Mica, Salt) minerals; conventional (Coal, Petroleum, Natural gas and Hydroelectricity) and non-conventional energy sources (solar, wind, biogas) and conservation. Industries - types, factors of industrial location; distribution and changing pattern of selected industries-iron and steel, cotton textiles, sugar, petrochemicals, and knowledge based industries; impact of liberalization, privatisation and globalisation on industrial location; industrial clusters. Planning in India - target group area planning (case study); idea of sustainable development (case study). Unit 9: Transport, Communication and International Trade Transport and communication-roads, railways, waterways and airways: oil and gas pipelines; Geographical information and communication networks. International trade - changing pattern of India's foreign trade; sea ports and their hinterland and airports. Unit 10: Geographical Perspective on selected issues and problems Environmental pollution; urban - waste disposal. Urbanisation, rural-urban migration; problems of slums. Land degradation. Map Work Map work on locating and labelling of features based on above units on outline map of India. C. Practical Work Unit 1: Processing of Data and Thematic Mapping Unit 2: Field study or Spatial Information Technology Unit 3: Practical Record Book and Viva Voce
Views: 830 Goodwill Education
tools and equipment used in small scale mining in ghana
 
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Views: 48 Roberts K
(1/6) Dillon Thomson - Environmentalism in the 21st Century
 
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A call to action from Dillon Thomson of Fertile Ground. The presentation is a mix of political education, environmentalism, and historical examples of organized political resistance to oppression.
Mark Tibbett - Carbon accumulation & the return of microbial function in soils Pt 1
 
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Mark Tibbett's presentation is focused around one question: can we change the amount of carbon in soil through land management? Atmospheric carbon has risen 31% since 1750, and this is a concern within the context of global warming. One significant factor in that increase has been shifts in land use, such as native forest to crop, which allow a release in carbon from the soil to the atmosphere. In Western Australia, soil carbon at a depth of 40 cm can be 2 -5 times greater than what would be found at a depth of 50 cm. This finding is similar to the Southern hemisphere and in tropical areas. Are there ways to manage the land that would allow carbon to be increased in the soil? Put simply, yes. By changing the land use and evaluating the significance of surface litter. This is not only important for climate change. There are many important benefits to carbon in the soil. It is a source of energy and a reservoir of nutrients. It improves the structural stability of soils at various scales and alters soil thermal qualities. Tibbett's experience is in bauxite mining and he explains the basic process, and how it relates to soil quality. Once the plants and first two meters are stripped, the next six meters are drilled and blasted, and the following six meters are dug and loaded. Once the mining is completed, the site is prepared for restoration. Soils get layered back on and landscaping is added. "Direct return" is the goal of all mines. This means the top soil is removed in preparation for mining, and dropped onto a reclamation-ready mine site the same day. In this way the maximum integrity of the soil is maintained. Over many years surface litter in the reclaimed forest is evaluated and weighed. After 10-15 years, the litter is higher in the tropical and Mediterranean forests than native forests. This is expected partly because of stem density and partly because the entire forest was re-planted in a short period of time compared to the growth and development of a natural forest. Tibbett's presentation discusses carbon content in soil with an awareness of the affects of mining to soil quality, and an understanding to broad benefits of carbon content in soil, to soil quality and climate change. This presentation was a part of the Alberta Soil Science Workshop, from February 2014.
Views: 228 LanduseKN
Aluminium oxide
 
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Aluminium oxide is a chemical compound of aluminium and oxygen with the chemical formula Al2O3. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide. It is commonly called alumina, and may also be called aloxide, aloxite, or alundum depending on particular forms or applications. It commonly occurs in its crystalline polymorphic phase α-Al2O3, in which it comprises the mineral corundum, varieties of which form the precious gems ruby and sapphire. Al2O3 is significant in its use to produce aluminium metal, as an abrasive owing to its hardness, and as a refractory material owing to its high melting point. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 5830 Audiopedia
Refinery Machines by Sladjana Enterprises, Mumbai
 
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[http://www.goldrefinerymachine.com/] Welcome to Sladjana Enterprises, Manufacturer & Exporter of Refinery Machines & Pollution Control Equipments The company was established in 2001, at Mumbai. We have spread our wings to Indian Subcontinent, Africa & Middle East. Operational training, Transparent sampling policy & customized solution make us the preferred supplier in the industry. Our product list covers Gold Mining, Pollution Control & Precious Metal Refining Equipments. We offer Melting Furnaces & Scrubber Systems that are acknowledged for their functionality. Our Copper Mining Equipments & Invented Gold Refining Units are widely acclaimed in the market. Karat Scraps & Dental Scraps offered by us are available at affordable prices. We also provide Silver Scraps & Gold Spauge that are nothing but the best solution for all your needs. Along with that we offer Reactor & Industrial Equipments that are in huge demand across the global markets.
Views: 246 IndiaMARTSuppliers
MBMMLLC.com: Scraping and separating copper and aluminium from radiators with a hammer mill
 
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These copper aluminium radiators are a great source of copper, but they are so hard to clean and separate by hand. With this hammer mill the pieces are liberated into small pieces that can then be separated with an air density separation table. Phone: 360-595-4445 Email: [email protected] Website: MBMMLLC.com Facebook: https://www.facebook.com/MBMMLLC
Views: 8616 mbmmllc
Mineral resource classification
 
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Mineral resource classification is the classification of mineral deposits based on their geologic certainty and economic value. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 715 Audiopedia
What Is A Metal Ore?
 
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https://goo.gl/6U6t22 - Subscribe For more Videos ! For more Health Tips | Like | Comment | Share : ▷ CONNECT with us!! #HealthDiaries ► YOUTUBE - https://goo.gl/6U6t22 ► Facebook - https://goo.gl/uTP7zG ► Twitter - https://twitter.com/JuliyaLucy ► G+ Community - https://goo.gl/AfUDpR ► Google + - https://goo.gl/3rcniv ► Visit us - http://healthaware.in/ ► Blogger - https://juliyalucy.blogspot.in/ Watch for more Health Videos: ► How To Avoid Unwanted Pregnancy Naturally: https://goo.gl/hRy93e ► Period Hacks || How To Stop Your Periods Early: https://goo.gl/dSmFgi ► Cold and Flu Home Remedies: https://goo.gl/biPp8b ► Homemade Facial Packs: https://goo.gl/NwV5zj ► How To Lose Belly Fat In 7 Days: https://goo.gl/EHN879 ► Powerfull Foods for Control #Diabetes: https://goo.gl/9SdaLY ► Natural Hand Care Tips At Home That Work: https://goo.gl/YF3Exa ► How to Tighten #SaggingBreast: https://goo.gl/ENnb6b ► Natural Face Pack For Instant Glowing Skin: https://goo.gl/gvd5mM ► Get Rid of Stretch Marks Fast & Permanently: https://goo.gl/ZVYvQZ ► Eating Bananas with Black Spots: https://goo.gl/gXuri6 ► Drink this Juice every day to Cure #Thyroid in 3 Days: https://goo.gl/L3537H ► How Garlic Improves Sexual Stamina? https://goo.gl/GNcbYU ► Benefits of using Egg Shells: https://goo.gl/hAUyUS ► Home Remedies to Gain Weight Fast: https://goo.gl/jBVVQh ► Amazing Benefits of Olive Oil for Health: https://goo.gl/R3583v ► Rapid Relief of Chest Pain (Angina): https://goo.gl/idAFZR ► Home Remedies for Joint & Arthritis Pains Relief: https://goo.gl/jRbNkh ► SHOCKING TRICKs For #Diabetes Control: https://goo.gl/ATDDsV ► Doctors Are Shocked! #Diabetics: https://goo.gl/ZeQddJ ► Home Remedies for Gastric Troubles: https://goo.gl/72VR1b ► Juice for #Diabetics Type 2: https://goo.gl/3vDMqR --------- The most common iron ores are magnetite and hematite (a rusty colored mineral formed by metal ore an is any kind of rock or from which a can be profitably extracted. Googleusercontent searchores are naturally occurring rocks that contain metal or compounds in sufficient amounts to make it worthwhile extracting them. Metal ores are divided into ferrous (containing iron) and non. Gcse chemistry extraction of metals what is a metal ore examples ores ore? Definition, types, uses & video lesson national geographic society. In general, ores are oxides, sulfides, silicates or native metals,' those found in nature. Details for the extraction of aluminium, copper, may 7, 2011 roughly 40 percent gold ore mined on earth has come out mines there. This page looks at the various factors which influence choice of method for extracting metals from their ores, including reduction by carbon, a reactive metal (like sodium or magnesium), and electrolysis. Ferrous metal ores, containing iron (pyrite extraction of metals. Only the most unreactive metals, like silver and gold an ore is any naturally occurring source of a metal that you can economically extract from. The extraction of metals an introduction. They are nearly always present in the forms of compounds, often where metal is chemically joined with oxygen. What is a metal ore? A solid element or compound which occurs naturally in the earth's crust called mineral. Ore is a deposit in the earths crust of one or more valuable minerals. See more ores definition, a metal bearing mineral or rock, native metal, that can be mined at profit. Economic extraction means that the cost of getting metal out ore is term used to refer a rock contains minerals such as metals. Called 'black copper' by the egyptians, meteoric iron isn't sort of substance one finds in huge, consolidated locations. The different metals are separated during the production process. Chromite cerussite galena cinnabar barite zincite sphalerite cassiterite kunzite celestine. Aluminum, for example, is the most common metal in earth's crust, occurring all sorts of minerals. What is a metal ore? Gcse science marked by teachers metals introduction chemguidewhat define ore at dictionary ores iron 101 properties of metal, experiments, and morean to the chemistry extraction. Uk schools gcsebitesize extractingmetalsrev1. Ores are the source for some of world's most important geological resources, including both precious and industrial metals energy resources like uranium may 7, 2011 encyclopedic entry. Some common ores include galena (lead ore), bornite and malachite (copper), cinnabar (mercury), bauxite (aluminum). Most metal ores are polymetallic, i. Metal ores bbc gcse bitesize metal ores. Ore is a deposit in the earth's crust of one or more valuable minerals. Metals are rarely found uncombined (as elements) in nature. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, iron sep 19, 2012 what is a metal ore? An
Views: 75 Fredda Winkleman
Manganese
 
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Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is not found as a free element in nature, it is often found in combination with iron, and in many minerals. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. Historically, manganese is named for various black minerals (such as pyrolusite) from the same region of Magnesia in Greece which gave names to similar-sounding magnesium, Mg, and magnetite, an ore of the element iron, Fe. By the mid-18th century, Swedish chemist Carl Wilhelm Scheele had used pyrolusite to produce chlorine. Scheele and others were aware that pyrolusite (now known to be manganese dioxide) contained a new element, but they were not able to isolate it. Johan Gottlieb Gahn was the first to isolate an impure sample of manganese metal in 1774, by reducing the dioxide with carbon. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 4014 Audiopedia
Sierra Leone
 
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Sierra Leone , officially the Republic of Sierra Leone, is a country in West Africa that is bordered by Guinea to the northeast, Liberia to the southeast, and the Atlantic Ocean to the southwest. Sierra Leone is a constitutional republic with a directly elected president and a unicameral legislature. The country has a tropical climate, with a diverse environment ranging from savannah to rainforests. The country covers a total area of 71,740 km2 and with an estimated population of 6 million . This video targeted to blind users. Attribution: Article text available under CC-BY-SA Public domain image source in video
Views: 5351 encyclopediacc
Mod-01 Lec-18 Lecture-18-Extraction Aluminium (Contd...3)
 
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Non-ferrous Extractive Metallurgy by Prof.H.S. Ray,Department of Metallurgical & Materials Engineering,IIT Kharagpur.For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 1452 nptelhrd
Special Concretes: High Strength Matrices and SCC
 
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Concrete Technology by Dr. B. Bhattacharjee,Department of Civil Engineering,IIT Delhi.For more details on NPTEL visit http://nptel.ac.in
Views: 3465 nptelhrd
Laos | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Laos Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Laos ( ( listen), ; Lao: ລາວ, Lāo [láːw]), officially the Lao People's Democratic Republic (Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ, translit. Sathalanalat Paxathipatai Paxaxon Lao; French: République démocratique populaire lao), commonly referred to by its colloquial name of Muang Lao (Lao: ເມືອງລາວ, Muang Lao), is a socialist state and the only landlocked country in Southeast Asia at the heart of the Indochinese peninsula, bordered by Myanmar (Burma) and China to the northwest, Vietnam to the east, Cambodia to the southwest, and Thailand to the west and southwest.Present-day Laos traces its historic and cultural identity to the kingdom of Lan Xang Hom Khao (Kingdom of a Million Elephants Under the White Parasol), which existed for four centuries as one of the largest kingdoms in Southeast Asia. Due to Lan Xang's central geographical location in Southeast Asia, the kingdom became a popular hub for overland trade, becoming wealthy economically as well as culturally. After a period of internal conflict, Lan Xang broke off into three separate kingdoms—Luang Phrabang, Vientiane and Champasak. In 1893, it became a French protectorate, with the three territories uniting to form what is now known as the country of Laos. It briefly gained freedom in 1945 after Japanese occupation, but was recolonised by France until it won autonomy in 1949. Laos became independent in 1953, with a constitutional monarchy under Sisavang Vong. Shortly after independence, a long civil war ended the monarchy, when the Communist Pathet Lao movement came to power in 1975. During the first years of Communist rule, Laos was dependent on military and economic aid supported by the Soviet Union until its dissolution in 1991. According to the anti-corruption non-governmental organisation Transparency International, Laos remains one of the most corrupt countries in the world. This has deterred foreign investment and created major problems with the rule of law, including the nation's ability to enforce contract and business regulation. This has contributed to a third of the population of Laos currently living below the international poverty line (living on less than US$1.25 per day). Laos has a low-income economy, with one of the lowest annual incomes in the world. In 2014, the country ranked 141st on the Human Development Index (HDI), indicating lower medium development. According to the Global Hunger Index (2015), Laos ranks as the 29th hungriest nation in the world out of the list of the 52 nations with the worst hunger situation(s). The country has also had a poor human rights record. Laos is a member of the Asia-Pacific Trade Agreement (APTA), Association of Southeast Asian Nations (ASEAN), East Asia Summit and La Francophonie. Laos applied for membership of the World Trade Organisation (WTO) in 1997; on 2 February 2013, it was granted full membership. It is a one-party socialist republic espousing Marxism–Leninism governed by the Lao People's Revolutionary Party, in which the party leadership is dominated by military figures.The capital and largest city is Vientiane. Other major cities include Luang Prabang, Savannakhet and Pakse. The official language is Lao. Laos is a multi-ethnic country, with the politically and culturally dominant Lao people making up about 55 percent of the population, mostly in the lowlands. Mon-Khmer groups, the Hmong and other indigenous hill tribes, accounting for 45 percent of the population, live in the foothills and mountains. Laos's ambitious strategies for development are based on generating electricity from its rivers and selling the power to its neighbours, namely Thailand, China and Vietnam, as well as its initiative to become a "land-linked" nation, shown by the planning of four new railways connecting Laos to its neighbours. Laos has been referred to as one of East Asia and Pacific's Fastest Growing Economies by the World Bank, with annual GDP growth averaging 7.8% for the past decade.
Views: 8 wikipedia tts
Microeconomics - Chapter 15: Monopoly and Antitrust Policy
 
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Barriers high enough to create monopoly can be due to: (1) government blocking the entry of more than one firm into a market; (2) one firm having control over a necessary resource; (3) the existence of network externalities in supplying the good or service; (4) economies of scale so large that one firm has a natural monopoly. We have considered how markets form in response to many factors, but really it comes down to companies selling products that people want and need to buy. If the product is carrots and just about anyone can grow them and loads of people want to buy them, then you have a perfectly competitive market like we saw in the farmer’s markets.
Views: 615 Dr. Bill Schlosser
Lecture - 9 Origin And Types of Soils
 
01:00:31
Lecture Series on Engineering Geology by Prof.Debasis Roy, Department of Civil Engineering,I.I.T.Kharagpur.For more Courses visit http://nptel.iitm.ac.in
Views: 16137 nptelhrd
Sierra Leone | Wikipedia audio article
 
01:57:41
This is an audio version of the Wikipedia Article: Sierra Leone Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Sierra Leone (, UK also ), officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea to the northeast, Liberia to the southeast and the Atlantic Ocean to the southwest. It has a tropical climate, with a diverse environment ranging from savanna to rainforests. The country has a total area of 71,740 km2 (27,699 sq mi) and a population of 7,075,641 as of the 2015 census. Sierra Leone is a constitutional republic with a directly elected president and a unicameral legislature. Sierra Leone has a dominant unitary central government. The president is the head of state and the head of government. The country's capital and largest city is Freetown. Kenema, located 185 miles from Freetown, is the country's second most populous city. Other major cities with a population above one hundred thousand are Bo, Koidu Town and Makeni. Sierra Leone is made up of five administrative regions: the Northern Province, North West Province, Eastern Province, Southern Province and the Western Area. These regions are subdivided into sixteen districts.Sierra Leone became independent from the United Kingdom on 27 April 1961, led by Sir Milton Margai, who became the country's first prime minister. In May 1962, Sierra Leone held its first general elections as an independent nation. Siaka Stevens" All People's Congress won the 1967 Sierra Leone parliamentary election over the governing Sierra Leone People's Party. Stevens ruled Sierra Leone from 1968 to 1985 in which he was intolerant of opponents and critics of his government. In 1971, Stevens abolished Sierra Leone's parliamentary government system and declared Sierra Leone a presidential republic. Sierra Leone was a one-party state from 1978 to 1985, in which Stevens' All People's Congress was the only legal political party in the country. The current constitution of Sierra Leone, which includes multi party democracy, was adopted in 1991 by the government of President Joseph Saidu Momoh, Stevens' hand-picked successor. In 1991, a rebel group known as the Revolutionary United Front led by former Sierra Leone army Corporal Foday Sankoh launched a brutal civil war in the country. In April 1992 a group of Junior military officers toppled Momoh from power and 25-year-old Captain Valentine Strasser became the head of state. In January 1996 Strasser was toppled from power by his deputy, Brigadier General Julius Maada Bio. Bio returned the country to multi-party democracy and the 1991 constitution was reestablished. Bio handed power to Ahmad Tejan Kabbah of the Sierra Leone People's Party after his victory in the 1996 Sierra Leone presidential election. In 1997, the military overthrew president Kabbah. However, in February 1998, a coalition of West African Ecowas armed forces led by Nigeria, removed the military Junta from power by force and president Kabbah was reinstated as president. In 1998, the coup leaders were executed after they were sentenced to death by a military court martial. Sierra Leone has had an uninterrupted democracy since 1998 to present. In January 2002, President Ahmad Tejan Kabbah fulfilled his campaign promise by officially ending the civil war as the rebels were defeated by military force with the help and support of Ecowas, the British government, the African Union, and the United Nations. About 16 ethnic groups inhabit Sierra Leone, each with its own language and customs. The two largest and most influential are the Temne and Mende. The Temne are predominantly found in the northwest of the country, and the Mende are predominant in the southeast. Comprising a small minority, about 2%, are the Krio people, who are descendants of freed African-American and West Indian slaves. The Krios are overwhelmingly found in the capital Freetown and its surrounding countryside. Although English is the official language, used in schools and government administration, Krio, an English-based creole, is the most widely spoken language across Sierr ...
Views: 6 wikipedia tts
Economy of Tamil Nadu | Wikipedia audio article
 
31:15
This is an audio version of the Wikipedia Article: Economy of Tamil Nadu Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Tamil Nadu has the second-largest economy in India. Over 50% of the state is urbanized, accounting for 9.6% of the urban population in the country, while only comprising 6% of India's total population. Services contributes to 45% of the economic activity in the state, followed by manufacturing at 34% and agriculture at 21%. Government is the major investor in the state, with 52% of total investments, followed by private Indian investors at 29.9% and foreign private investors at 14.9%. It has been ranked as the second most economically free state in India by the Economic Freedom Rankings for the States of India.
Views: 15 wikipedia tts
Gallium
 
28:29
Gallium is a chemical element with symbol Ga and atomic number 31. Elemental gallium does not occur in free form in nature, but as the gallium(III) compounds that are in trace amounts in zinc ores and in bauxite. Gallium is a soft silvery metal, and elemental gallium is a brittle solid at low temperatures. If it is held in the human hand long enough, gallium will melt, since it melts at the temperature of about 29.76 °C (85.57 °F) (slightly above room temperature). The melting point of gallium is used as a temperature reference point. The alloy galinstan (68.5% gallium, 21.5% indium, and 10% tin) has an even lower melting point of −19 °C (−2 °F), well below the freezing point of water. Beginning with its discovery in 1875 through the era of semiconductors, gallium was used primarily as an agent to make alloys that melt at low temperatures. Then, gallium became useful in semiconductors, including as a dopant. Today, nearly all gallium is used in electronics. Gallium arsenide, the primary chemical compound of gallium in electronics, is used in microwave circuits, high-speed switching circuits, and infrared circuits. Gallium nitride and indium gallium nitride, minority semiconductor uses, produce blue and violet light-emitting diodes (LEDs) and diode lasers. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 885 Audiopedia
Ceramic engineering
 
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Ceramic engineering is the science and technology of creating objects from inorganic, non-metallic materials. This is done either by the action of heat, or at lower temperatures using precipitation reactions from high-purity chemical solutions. The term includes the purification of raw materials, the study and production of the chemical compounds concerned, their formation into components and the study of their structure, composition and properties. Ceramic materials may have a crystalline or partly crystalline structure, with long-range order on atomic scale. Glass ceramics may have an amorphous or glassy structure, with limited or short-range atomic order. They are either formed from a molten mass that solidifies on cooling, formed and matured by the action of heat, or chemically synthesized at low temperatures using, for example, hydrothermal or sol-gel synthesis. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 1198 Audiopedia
Languages of Laos | Wikipedia audio article
 
01:03:56
This is an audio version of the Wikipedia Article: Languages of Laos Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Laos ( ( listen), ; Lao: ລາວ, Lāo [láːw]), officially the Lao People's Democratic Republic (Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ, translit. Sathalanalat Paxathipatai Paxaxon Lao; French: République démocratique populaire lao), commonly referred to by its colloquial name of Muang Lao (Lao: ເມືອງລາວ, Muang Lao), is a socialist state and the only landlocked country in Southeast Asia at the heart of the Indochinese peninsula, bordered by Myanmar (Burma) and China to the northwest, Vietnam to the east, Cambodia to the southwest, and Thailand to the west and southwest.Present-day Laos traces its historic and cultural identity to the kingdom of Lan Xang Hom Khao (Kingdom of a Million Elephants Under the White Parasol), which existed for four centuries as one of the largest kingdoms in Southeast Asia. Due to Lan Xang's central geographical location in Southeast Asia, the kingdom became a popular hub for overland trade, becoming wealthy economically as well as culturally. After a period of internal conflict, Lan Xang broke off into three separate kingdoms—Luang Phrabang, Vientiane and Champasak. In 1893, it became a French protectorate, with the three territories uniting to form what is now known as the country of Laos. It briefly gained freedom in 1945 after Japanese occupation, but was recolonised by France until it won autonomy in 1949. Laos became independent in 1953, with a constitutional monarchy under Sisavang Vong. Shortly after independence, a long civil war ended the monarchy, when the Communist Pathet Lao movement came to power in 1975. During the first years of Communist rule, Laos was dependent on military and economic aid supported by the Soviet Union until its dissolution in 1991. According to the anti-corruption non-governmental organisation Transparency International, Laos remains one of the most corrupt countries in the world. This has deterred foreign investment and created major problems with the rule of law, including the nation's ability to enforce contract and business regulation. This has contributed to a third of the population of Laos currently living below the international poverty line (living on less than US$1.25 per day). Laos has a low-income economy, with one of the lowest annual incomes in the world. In 2014, the country ranked 141st on the Human Development Index (HDI), indicating lower medium development. According to the Global Hunger Index (2015), Laos ranks as the 29th hungriest nation in the world out of the list of the 52 nations with the worst hunger situation(s). The country has also had a poor human rights record. Laos is a member of the Asia-Pacific Trade Agreement (APTA), Association of Southeast Asian Nations (ASEAN), East Asia Summit and La Francophonie. Laos applied for membership of the World Trade Organisation (WTO) in 1997; on 2 February 2013, it was granted full membership. It is a one-party socialist republic espousing Marxism–Leninism governed by the Lao People's Revolutionary Party, in which the party leadership is dominated by military figures.The capital and largest city is Vientiane. Other major cities include Luang Prabang, Savannakhet and Pakse. The official language is Lao. Laos is a multi-ethnic country, with the politically and culturally dominant Lao people making up about 55 percent of the population, mostly in the lowlands. Mon-Khmer groups, the Hmong and other indigenous hill tribes, accounting for 45 percent of the population, live in the foothills and mountains. Laos's ambitious strategies for development are based on generating electricity from its rivers and selling the power to its neighbours, namely Thailand, China and Vietnam, as well as its initiative to become a "land-linked" nation, shown by the planning of four new railways connecting Laos to its neighbours. Laos has been referred to as one of East Asia and Pacific's Fastest Growing Economies by the World Bank, with annual GDP growth averaging 7.8% for the past decade.
Views: 8 wikipedia tts
Metal
 
22:52
A metal is a solid material that is typically hard, opaque, shiny, and features good electrical and thermal conductivity. Metals are generally malleable—that is, they can be hammered or pressed permanently out of shape without breaking or cracking—as well as fusible and ductile . 91 of the 118 elements in the periodic table are metals. This video targeted to blind users. Attribution: Article text available under CC-BY-SA Public domain image source in video
Views: 45 encyclopediacc
Sierra Leone | Wikipedia audio article
 
01:57:41
This is an audio version of the Wikipedia Article: Sierra Leone Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Sierra Leone (, UK also ), officially the Republic of Sierra Leone, is a country in West Africa. It is bordered by Guinea to the northeast, Liberia to the southeast and the Atlantic Ocean to the southwest. It has a tropical climate, with a diverse environment ranging from savanna to rainforests. The country has a total area of 71,740 km2 (27,699 sq mi) and a population of 7,075,641 as of the 2015 census. Sierra Leone is a constitutional republic with a directly elected president and a unicameral legislature. Sierra Leone has a dominant unitary central government. The president is the head of state and the head of government. The country's capital and largest city is Freetown. Kenema, located 185 miles from Freetown, is the country's second most populous city. Other major cities with a population above one hundred thousand are Bo, Koidu Town and Makeni. Sierra Leone is made up of five administrative regions: the Northern Province, North West Province, Eastern Province, Southern Province and the Western Area. These regions are subdivided into sixteen districts.Sierra Leone became independent from the United Kingdom on 27 April 1961, led by Sir Milton Margai, who became the country's first prime minister. In May 1962, Sierra Leone held its first general elections as an independent nation. Siaka Stevens" All People's Congress won the 1967 Sierra Leone parliamentary election over the governing Sierra Leone People's Party. Stevens ruled Sierra Leone from 1968 to 1985 in which he was intolerance of opposions and critics of his government. In 1971, Stevens abolished Sierra Leone's parliamentary government system and declared Sierra Leone a presidential republic. Sierra Leone was a one-party state from 1978 to 1985, in which Stevens' All People's Congress was the only legal political party in the country. The current constitution of Sierra Leone, which includes multi party democracy, was adopted in 1991 by the government of President Joseph Saidu Momoh, Stevens' hand-picked successor. In 1991, a rebel group known as the Revolutionary United Front led by former Sierra Leone army Corporal Foday Sankoh launched a brutal civil war in the country. In April 1992 a group of Junior military officers toppled Momoh from power and 25-year-old Captain Valentine Strasser became the head of state. In January 1996 Strasser was toppled from power by his deputy, Brigadier General Julius Maada Bio. Bio returned the country to multi-party democracy and the 1991 constitution was reestablished. Bio handed power to Ahmad Tejan Kabbah of the Sierra Leone People's Party after his victory in the 1996 Sierra Leone presidential election. In 1997, the military overthrew president Kabbah. However, in February 1998, a coalition of West African Ecowas armed forces led by Nigeria, removed the military Junta from power by force and president Kabbah was reinstated as president. In 1998, the coup leaders were executed after they were sentenced to death by a military court martial. Sierra Leone has had an uninterrupted democracy since 1998 to present. In January 2002, President Ahmad Tejan Kabbah fulfilled his campaign promise by officially ending the civil war as the rebels were defeated by military force with the help and support of Ecowas, the British government, the African Union, and the United Nations. About 16 ethnic groups inhabit Sierra Leone, each with its own language and customs. The two largest and most influential are the Temne and Mende. The Temne are predominantly found in the northwest of the country, and the Mende are predominant in the southeast. Comprising a small minority, about 2%, are the Krio people, who are descendants of freed African-American and West Indian slaves. The Krios are overwhelmingly found in the capital Freetown and its surrounding countryside. Although English is the official language, used in schools and government administration, Krio, an English-based creole, is the most widely spoken language across Sier ...
Views: 12 wikipedia tts
Belize | Wikipedia audio article
 
01:11:26
This is an audio version of the Wikipedia Article: Belize Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Belize ( ( listen)) (Spanish: Belice) is a country located on the eastern coast of Central America. Belize is bordered on the northwest by Mexico, on the east by the Caribbean Sea, and on the south and west by Guatemala. It has an area of 22,800 square kilometres (8,800 sq mi) and a population of 387,879 (2017). Its mainland is about 290 km (180 mi) long and 110 km (68 mi) wide. It has the lowest population and population density in Central America. The country's population growth rate of 1.87% per year (2015) is the second highest in the region and one of the highest in the Western Hemisphere.The Mayan civilization spread into the area of Belize between 1500 B.C. and 300 A.D. and flourished until about 1200. European exploration campaigns began in 1502 when Christopher Columbus sailed along the Gulf of Honduras. European settlement begun by English settlers in 1638, this period was also marked by Spain and Britain lay claim to the land until Britain defeated the Spanish in the Battle of St. George's Caye (1798). It became a British colony in 1840, known as British Honduras, and a Crown colony in 1862. Independence was achieved from the United Kingdom on 21 September 1981. Belize has a diverse society, composed of many cultures and languages that reflect its rich history. English is the official language of Belize, while Belizean Creole is an unofficial native language. Over half the population is multilingual, with Spanish being the second most common spoken language. It is known for its September Celebrations, its extensive barrier reef coral reefs and punta music.Belize's abundance of terrestrial and marine species and its diversity of ecosystems give it a key place in the globally significant Mesoamerican Biological Corridor. It is considered a Central American and Caribbean nation with strong ties to both the American and Caribbean regions. It is a member of the Caribbean Community (CARICOM), the Community of Latin American and Caribbean States (CELAC), and the Central American Integration System (SICA), the only country to hold full membership in all three regional organisations. Belize is a Commonwealth realm, with Queen Elizabeth II as its monarch and head of state.
Views: 9 wikipedia tts
Economy of Andhra Pradesh | Wikipedia audio article
 
18:23
This is an audio version of the Wikipedia Article: Economy of Andhra Pradesh Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= The economy of Andhra Pradesh is one of the fastest growing economies in India, with growth outstripping that of the wider Indian economy in the past few years. The GSDP at constant (2011-12) Prices for the year 2016-17 (Advance Estimates) is estimated at Rs.5,47,021 crores as against Rs.4,90,134 crores for 2015-16 (First Revised Estimates) indicating a growth of 11.61%. Per Capita Income at current prices increased to Rs.1,22,376 from Rs.1,08,163 in 2015-16 registering a growth of 13.14 percent.The economy is primarily dependent on agriculture, which directly and indirectly employs 62% of the population. The state has been ranked the best state in ease of doing business in the country by the World Bank.
Views: 9 wikipedia tts
Chhattisgarh
 
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Chhattisgarh Chattīsgaṛh  pronounced [tʃʰʌttiːsɡʌɽʱ]) is a state in Central India. It is the 10th largest state in India, with an area of 135,190 km2 (52,200 sq mi). With a population of 25.5 million, Chhattisgarh is the 16th most-populated state of the nation. It is a source of electricity and steel for India. Chhattisgarh accounts for 15% of the total steel produced in the country. Chhattisgarh is one of the fastest developing states in India. The state was formed on 1 November 2000 by partitioning 16 Chhattisgarhi-speaking southeastern districts of Madhya Pradesh. Raipur was made its capital city. Chhattisgarh borders the states of Madhya Pradesh in the northwest, Maharastra in the southwest Telangana and Andhra Pradesh in the south, Odisha in the east, Jharkhand in the northeast and Uttar Pradesh in the north. Currently the state comprises 27 districts. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 2684 Audiopedia
Odisha | Wikipedia audio article
 
31:52
This is an audio version of the Wikipedia Article: Odisha Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Odisha ( ( listen); also known by the former name Orissa, ) is one of the 29 states of India. Located in eastern India, it is surrounded by the states of West Bengal to the north-east, Jharkhand to the north, Chhattisgarh to the west and north-west, and Andhra Pradesh to the south. Odisha has 485 kilometres (301 mi) of coastline along the Bay of Bengal on its east, from Balasore to Ganjam. It is the 9th largest state by area, and the 11th largest by population. It is also the 3rd most populous state of India in terms of tribal population. Odia (formerly known as Oriya) is the official and most widely spoken language, spoken by 33.2 million according to the 2001 Census.The ancient kingdom of Kalinga, which was invaded by the Mauryan emperor Ashoka in 261 BCE resulting in the Kalinga War, coincides with the borders of modern-day Odisha. The modern state of Orissa was established on 1 April 1936, as a province in British India, and consisted predominantly of Odia-speaking regions. April 1 is celebrated as Odisha Day (Utkala Dibasa) . The region is also known as Utkala and is mentioned in India's national anthem, "Jana Gana Mana". Cuttack was made the capital of the region by Anantavarman Chodaganga in c. 1135, after which the city was used as the capital by many rulers, through the British era until 1948. Thereafter, Bhubaneswar became the capital of Odisha.
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IRON ORE CRUSHER FOR SALE AND RENT
 
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Chhattisgarh | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Chhattisgarh Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Chhattisgarh (Chattīsgaṛh, translation: Thirty-Six Forts) is one of the 29 states of India, located in the centre-east of the country. It is the tenth-largest state in India, with an area of 135,191 km2 (52,198 sq mi). With a population of 25.5 million, Chhattisgarh is the 17th-most populated state in the country. A resource-rich state, it is a source of electricity and steel for the country, accounting for 15% of the total steel produced. Chhattisgarh is one of the fastest-developing states in India.The state was formed on 1 November 2000 by partitioning 10 Chhattisgarhi and 6 Gondi speaking southeastern districts of Madhya Pradesh. The capital city is Raipur. Chhattisgarh borders the states of Madhya Pradesh in the northwest, Uttar Pradesh in the north, Jharkhand in northeast, Maharashtra in the southwest, Telangana and Andhra Pradesh in the south, Odisha in the southeast. Currently the state comprises 27 districts.
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use of iron ore beneficiation machine
 
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Small portable crushers trail tech
 
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how is copper transported for further processing for final use
 
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beneficiation of iron ore plant operations
 
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More Details : http://wwa.stonecrushersolution.org/solutions/solutions.html we will provide a professional answer and quality of services. If this video does not meet your needs I apologize here. Visit Website: http://www.gospellightbaptistschool.com Contact Us For Help: http://www.gospellightbaptistschool.com/chat.html iron ore beneficiation plants india Solutions for the Indian Iron Ore and Steel Industry. 1. Iron ore I Advanced 1. Iron ore I Advanced Beneficiation processes I Specific I Density. 1.1 Jigging of iron bKuntang ore beneficiation plant iron bKuntang ore beneficiation plant, MTM Crusher. IRON ORE 2013 CONTENTS, The AusIMM. Research and Innovation for the Iron Ore to Carbon Steel Value Chain. Iron ore beneficiation plant Flotation iron ore separation Introduction. The iron ore beneficiation plant and the iron ore concentrate quality of our company has reached the international advanced level, but considering the design of beneficiation plant for iron ore Iron Ore,Fine Iron Ore Beneficiation,Spiral Concentrators. and provided pilot plant designs and plant specifications, supplying of pilot and production plants and bhushan steel iron ore beneficiation plant location, Grinding steel industry capital investment, 2012 steelmaking capacity. Iron ore from Exi mine is located in Enshi; China, Baosteel Group, Zhanjiang project iron ore beneficiation plant, crushercost.net, IRCTC Tatkal iron ore beneficiation plant iron ore in preparation for further activities to recover iron values. Milling operations are designed to produce Iron Ore Beneficiation Jobs, Naukri.com Apply to 3 Iron Ore Beneficiation Jobs on Naukri.com. Explore jobs across top companies. Move up the career ladder with India's No.1 Job site! iron ore beneficiation plant mechanical engineer iron ore beneficiation plant mechanical engineer. If you want to get more detailed product information and prices, ZME recommend that you get in touch with us through iron ore beneficiation and pellet plant jobs Plant, Iron Ore Beneficiation and Pellet Plant, Mineral processing industries As part of job, overseeing entire plant operations, responsible for business Samarco Alegria, Mining Technology Samarco Minerac?o's Alegria iron ore mine is in Brazil's Iron Quadrangle, about 4.5km north of the depleted Germano deposit, within the districts of Mariana and Ouro Ferrous metal beneficiation plant for sale, Ore Beneficiation Ferrous metal beneficiation plant for sale. Black metal only three: iron, manganese, chromium. And they all are not black. Pure iron is silvery white; Manganese is iron ore beneficiation plant iron ore processing plants Find here Iron Ore Beneficiation Plant manufacturers, Mines producing for cement plants tend to be smaller operations loed outside Michigan and Minnesota essar iron ore beneficiation plant Spiral separators, belt conveyor etc in iron ore beneficiation plant. Gagan Agrawal Essar Steel, Operations, India, Bailadilla: Beneficiation Plant. beneficiation washing plant iron ore definition the treatment of raw material (as iron ore) to improve physical or chemical . Beneficiation techniques include washing, sizing of particulates, and .. heard it used Beneficiation plant of iron ore, Crusher Unit Stemcor to set up iron ore beneficiation plant by 2013 , business . jspl , the biggest integrated iron ore beneficiation plant in india., pilot tests with minijig goethite beneficiation plant, SlideShare http://crusherexporters.com goethite beneficiation plant, tantalite beneficiation plant , How Does An Iron Ore Beneficiation Plant Work? , iron ore benefici what is beneficiation plant for iron ore Iron ore beneficiation plant for Kenya Mining Crushing Plant . Bauxite, also known as " iron bauxite", is a kind of aluminum ore , as it contains iron oxide. 600 TPH Ore Beneficiation Line, ore processing plant Ore beneficiation line or ore processing plant flotation machine, concentrator Fote ore beneficiation plant can be divided into iron ore processing plant, beneficiation of iron ore BENEFICIATION OF IRON ORE FINES FROM MINE REJECTS. beneficiation of iron ore FINES FROM MINE REJECTS 551 Flow sheet evolved for Schist associated rejects iron ore beneficiation plant process flow chart ppt, MTM Crusher Home Application iron ore beneficiation plant process flow chart ppt. iron ore beneficiation plant process flow Effective Beneficiation of Low Grade Iron Ore iron ore beneficiation plant design This process involves various types of iron ore beneficiation plant and Milling operations are design of iron ore beneficiation plant Iron ore Aggregate beneficiati
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Laos | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Laos Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Laos ( ( listen), ; Lao: ລາວ, Lāo [láːw]), officially the Lao People's Democratic Republic (Lao: ສາທາລະນະລັດ ປະຊາທິປະໄຕ ປະຊາຊົນລາວ, translit. Sathalanalat Paxathipatai Paxaxon Lao; French: République démocratique populaire lao), commonly referred to by its colloquial name of Muang Lao (Lao: ເມືອງລາວ, Muang Lao), is a socialist state and the only landlocked country in Southeast Asia at the heart of the Indochinese peninsula, bordered by Myanmar (Burma) and China to the northwest, Vietnam to the east, Cambodia to the southwest, and Thailand to the west and southwest.Present-day Laos traces its historic and cultural identity to the kingdom of Lan Xang Hom Khao (Kingdom of a Million Elephants Under the White Parasol), which existed for four centuries as one of the largest kingdoms in Southeast Asia. Due to Lan Xang's central geographical location in Southeast Asia, the kingdom became a popular hub for overland trade, becoming wealthy economically as well as culturally. After a period of internal conflict, Lan Xang broke off into three separate kingdoms—Luang Phrabang, Vientiane and Champasak. In 1893, it became a French protectorate, with the three territories uniting to form what is now known as the country of Laos. It briefly gained freedom in 1945 after Japanese occupation, but was recolonised by France until it won autonomy in 1949. Laos became independent in 1953, with a constitutional monarchy under Sisavang Vong. Shortly after independence, a long civil war ended the monarchy, when the Communist Pathet Lao movement came to power in 1975. During the first years of Communist rule, Laos was dependent on military and economic aid supported by the Soviet Union until its dissolution in 1991. According to the anti-corruption non-governmental organisation Transparency International, Laos remains one of the most corrupt countries in the world. This has deterred foreign investment and created major problems with the rule of law, including the nation's ability to enforce contract and business regulation. This has contributed to a third of the population of Laos currently living below the international poverty line (living on less than US$1.25 per day). Laos has a low-income economy, with one of the lowest annual incomes in the world. In 2014, the country ranked 141st on the Human Development Index (HDI), indicating lower medium development. According to the Global Hunger Index (2015), Laos ranks as the 29th hungriest nation in the world out of the list of the 52 nations with the worst hunger situation(s). The country has also had a poor human rights record. Laos is a member of the Asia-Pacific Trade Agreement (APTA), Association of Southeast Asian Nations (ASEAN), East Asia Summit and La Francophonie. Laos applied for membership of the World Trade Organisation (WTO) in 1997; on 2 February 2013, it was granted full membership. It is a one-party socialist republic espousing Marxism–Leninism governed by the Lao People's Revolutionary Party, in which the party leadership is dominated by military figures.The capital and largest city is Vientiane. Other major cities include Luang Prabang, Savannakhet and Pakse. The official language is Lao. Laos is a multi-ethnic country, with the politically and culturally dominant Lao people making up about 55 percent of the population, mostly in the lowlands. Mon-Khmer groups, the Hmong and other indigenous hill tribes, accounting for 45 percent of the population, live in the foothills and mountains. Laos's ambitious strategies for development are based on generating electricity from its rivers and selling the power to its neighbours, namely Thailand, China and Vietnam, as well as its initiative to become a "land-linked" nation, shown by the planning of four new railways connecting Laos to its neighbours. Laos has been referred to as one of East Asia and Pacific's Fastest Growing Economies by the World Bank, with annual GDP growth averaging 7.8% for the past decade.
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Belize | Wikipedia audio article
 
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This is an audio version of the Wikipedia Article: Belize Listening is a more natural way of learning, when compared to reading. Written language only began at around 3200 BC, but spoken language has existed long ago. Learning by listening is a great way to: - increases imagination and understanding - improves your listening skills - improves your own spoken accent - learn while on the move - reduce eye strain Now learn the vast amount of general knowledge available on Wikipedia through audio (audio article). You could even learn subconsciously by playing the audio while you are sleeping! If you are planning to listen a lot, you could try using a bone conduction headphone, or a standard speaker instead of an earphone. You can find other Wikipedia audio articles too at: https://www.youtube.com/channel/UCuKfABj2eGyjH3ntPxp4YeQ In case you don't find one that you were looking for, put a comment. This video uses Google TTS en-US-Standard-D voice. SUMMARY ======= Belize ( ( listen)) (Spanish: Belice), is a country located on the eastern coast of Central America. Belize is bordered on the northwest by Mexico, on the east by the Caribbean Sea, and on the south and west by Guatemala. It has an area of 22,800 square kilometres (8,800 sq mi) and a population of 387,879 (2017). Its mainland is about 290 km (180 mi) long and 110 km (68 mi) wide. It has the lowest population and population density in Central America. The country's population growth rate of 1.87% per year (2015) is the second highest in the region and one of the highest in the Western Hemisphere.The Mayan civilization spread into the area of Belize between 1500 B.C. and 300 A.D. and flourished until about 1200. European exploration campaigns began in 1502 when Christopher Columbus sailed along the Gulf of Honduras. European settlement begun by English settlers in 1638, this period was also marked by Spain and Britain lay claim to the land until Britain defeated the Spanish in the Battle of St. George's Caye (1798). It became a British colony in 1840, known as British Honduras, and a Crown colony in 1862. Independence was achieved from the United Kingdom on 21 September 1981. Belize has a diverse society, composed of many cultures and languages that reflect its rich history. English is the official language of Belize, while Belizean Creole is an unofficial native language. Over half the population is multilingual, with Spanish being the second most common spoken language. It is known for its September Celebrations, its extensive barrier reef coral reefs and punta music.Belize's abundance of terrestrial and marine species and its diversity of ecosystems give it a key place in the globally significant Mesoamerican Biological Corridor. It is considered a Central American and Caribbean nation with strong ties to both the American and Caribbean regions. It is a member of the Caribbean Community (CARICOM), the Community of Latin American and Caribbean States (CELAC), and the Central American Integration System (SICA), the only country to hold full membership in all three regional organisations. Belize is a Commonwealth realm, with Queen Elizabeth II as its monarch and head of state.
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