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  • Aluminium - Fact Sheets - Australian Mines Atlas

    Bauxite is mined by surface methods (open cut mining) in which the topsoil and ... and, thirdly the remaining green liquor is pumped through filters to remove any residual ... All commercial production of aluminium is based on the Hall-Heroult...

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  • US Energy Requirements for Aluminum Production

    given for 10-year trends in various sectors throughout the aluminum industry. ..... Table B.1: Energy Requirements to Produce Materials in the United States (2002). ..... Primary aluminum is produced globally by mining bauxite ore, refining the...

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  • Aluminium Stewardship Initiative – Aluminium and Sustainability

    Mined bauxite is refined into alumina, which is then smelted into aluminium. ... Existing primary aluminium production processes are energy intensive by nature. ... from primary aluminium production, through to production of end-user products...

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  • Aluminum - Al - Lenntech

    Aluminum was the original name given to the element by Humphry Davy but others called it aluminum and that became the accepted name in Europe. However...

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  • Aluminum - Rainforest Relief

    Aluminum is one of the most destructive mining products in the world. ... Anaerobic bacteria produce methane (CH4) as a by-product, rather than ammonia.

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  • Aluminum: How Sustainable is It? | Streamline

    Not a day goes by that we don't depend on aluminum. ... the case of aluminum) mine, process, and form the base material into the finished product. ... Produced through electrolysis, aluminum requires massive amounts of electricity: each US...

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  • Greenhouse gas emissions from aluminium production

    However, because of the large number of feed streams, by-product streams, waste ... of relevant environmental exchanges of the material or product throughout its ... This paper describes a LCA of aluminium production by a number of process ... diesel fuel for mining equipment is transported by road (diesel) a nominal...

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  • Aluminum Manufacturing - IFC

    mining and beneficiation of bauxite. At the mine ... for efficient extraction of the alumina through di- gestion by hot ... Primary aluminum is produced by the elec-.

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  • aluminium (US: aluminum) - Chemguide

    This page starts by looking at the extraction of aluminium from its ore, bauxite ... electrochemical series (reactivity series) to extract it from its ore using carbon ... Note: You may find all sorts of other formulae given for the product from this reaction. ... cooled, and "seeded" with some previously produced aluminium hydroxide.

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  • Rio Tinto Alcan - Making aluminium

    Bauxite. Bauxite is the mineral form of aluminium. It is the most abundant ... It is formed by the weathering of sedimentary rocks that contain a high ... Alumina is the name given to aluminium oxide (Al2O3), which is extracted from bauxite via a ... In general, it takes about two tonnes of bauxite to produce one tonne of alumina.

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  • Our business - Rio Tinto

    Our major products are aluminium, copper, diamonds, gold, industrial minerals (borates, ... Our 60,000 people work in more than 40 countries across six continents. ... groups – Aluminium, Copper & Coal, Diamonds & Minerals and Iron Ore – are supported by our ... In 2014, the mine produced 26 million tonnes of bauxite.

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  • Mining and Refining – Bauxite Residue Management

    Through collaborative and individual actions, to continue research and development into innovative ... Bauxite residue is a by-product of the Bayer Process.

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  • Aluminum - How Products Are Made

    The difficulty of extracting aluminum from its natural compounds kept the metal rare ... The Bayer process for refining aluminum ore, developed in 1888 by an Austrian ... hard rock, most consist of relatively soft dirt that is easily dug from open-pit mines. ... Carbon electrodes transmit the electric current through the electrolyte.

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  • EAA | Home Page » Production process

    Thus, the availability of raw material supplies for the production of aluminium is ... It is used to produce aluminium oxide through the Bayer chemical process and ... The material is mainly extracted by open-cast mining, which has a variable and...

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  • Alumina from Anorthosite - Nordic Mining

    Laboratory test have been successful in effectively producing an alumina ... By-products from the process are silica and precipitated calcium carbonate (PCC) ... Bauxite is refined through the Bayer process into alumina (Al2O3) which is the...

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  • The Production of Aluminium

    Aluminium occurs naturally as the mineral bauxite (primarily a mixture of ... Step 1 - Purification of raw materials ... This is decomposed by electrolysis, using a.

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  • environmental aspects of bauxite, alumina and aluminium - Unctad

    Mar 15, 1985 ... periods: before and after bauxite mining by Mineraçao Rio do Norte (MRN) ... Brazil also imported aluminium products corresponding to about 50 per cent of domestic ... Primary aluminium is produced through the electrolytic...

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  • What Aluminum Extraction Really Does to the Environment ...

    Nov 9, 2010 ... Aluminum takes a remarkable amount of energy to produce for consumer ... that we have enough reserves to carry us through the next 400 years. ... By recycling already-manufactured aluminum materials, precious space can...

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  • How Is It Produced? - All about aluminium

    Contrary to popular opinion, aluminium mines do not exist, and only a few minerals and ... As a result of nepheline processing, significant volumes of by-products are ... Alumina is then transformed into aluminium through electrolytic reduction.

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  • Aluminium smelting : our production process : who we are : Dubal

    Mined bauxite is refined into alumina, which is then converted into metallic ... As the electrical current passes through the solution, the aluminium oxide is ... bottom of the reduction cell, while the gaseous by-products form at the top of the cell.

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  • Novelis' Role in the Aluminum Value Chain - Sustainability 2011/12 ...

    Aluminum products are produced by using primary aluminum – which is made through a process of extracting alumina from the mined substance bauxite – or by...

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  • Extraction of Aluminum - TMS

    A summary of production steps from the bauxite mine through casting is given in Fig. ... world's bauxite supplies are guaranteed into the distant future. 2.1.2 The...

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  • CBG Bauxite (Aluminium Ore) Mining Operations - Mining Technology

    Since opening in 1973, the operations produced over 260Mt of bauxite for export. ... in 2005, with 11.5Mt/y to 12.5Mt/y of bauxite products being shipped from Kamsar. ... Bauxite deposits are found across much of western and central Guinea, having been formed by the tropical weathering of underlying, aluminium-rich rocks.

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  • Aluminum production and its effect on climate change - Vipul Jain

    Mar 24, 2013 ... Bauxite deposits are generally extracted by open cast mining from strata .... for comprehensive data on aluminum materials flows through the...

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  • Mining and Refining – Process - Bauxite & Alumina Website

    The Bayer Process was invented and patented in 1887 by Austrian scientist Karl Josef Bayer. ... close to bauxite mines and/or ports for efficient transport of raw materials and ... Alumina is used for the production of aluminium metal, through the...

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  • The Global Flow of Aluminum From 2006 Through 2025 - USGS

    By W.D. Menzie, JJ Barry, D.I. Bleiwas, E.L. Bray, T.G. Goonan, and Grecia Matos .... Micro-Level Flows of Materials Associated with Aluminum Production . ..... Diagram showing selected materials flows for a World bauxite mine model .

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  • Aluminum Production Wastes | Radiation Protection | US EPA

    Aug 30, 2012 ... Waste muds created by the extraction of alumina from its ore, bauxite, may ... typical concentrations in ore, product material, and production wastes: ... have been responsible for all recent bauxite mining in the United States.

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  • Aluminium recycling - Wikipedia, the free encyclopedia

    Aluminium recycling is the process by which scrap aluminium can be reused in ... which must first be mined from bauxite ore and then refined using the Bayer process. ... For this reason, approximately 31% of all aluminium produced in the United ... to produce any product for which new aluminium could have been used.

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  • 40 Common Minerals and Their Uses - National Mining Association

    Bauxite ore is the main source of aluminum and must be imported from ... It is used in computers, telecommunication products, aerospace and defense .... Titanium mineral concentrates are used primarily by titanium dioxide pigment producers. ... Nearly 20 percent of America's electricity is produced using uranium in nuclear...

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  • How aluminium is made - Norsk Hydro

    Aluminium production starts with the raw material bauxite, a clay like soil type found in a belt around the equator. The bauxite is mined from a few meters below the ground. rock ... Alumina is separated from the bauxite by using a hot solution of caustic soda and lime. ... The aluminium is transformed into different products.

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