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Bauxite - Wikipedia

Bauxite, an aluminium ore, is the world's main source of aluminium. It consists mostly of the minerals gibbsite (Al(OH)3), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the...

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Mining and Refining – Process

The bauxite is washed and crushed, reducing the particle size and ... (NaOH) solution is used to dissolve the aluminium-bearing minerals in the bauxite (gibbsite, ... resulting in the formation of small crystals of aluminium trihydroxite (Al(OH)3,...

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How it's made - Norsk Hydro

UN Global Compact · GRI index · Partnerships ... bauxite mining ... Aluminium production starts with the raw material bauxite, a clay like soil type found in ... The bauxite is then transported to plants where the clay is washed off and the bauxite...

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How aluminum is made - material, manufacture, making, used ...

Depending on the composition of the bauxite ore, relatively small amounts of ... This material is washed to recover alumina and caustic soda that can be reused.

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Minerals and Their Uses

Bauxite ore is the main source of aluminum. ... United States consumption of calcium metal is small. .... Iodine: Iodine is used as an antibacterial agent in soaps and cleaning products in restrooms, in iodized salt to prevent goiter, and in first aid ... defibrillator machines, many other types of portable medical equipment, and in...

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Bauxite Mining and Alumina Refining

May 8, 2014 ... A range of occupational health risks in bauxite mining and alumina refining ... Vietnam has a high clay content and has to be washed before processing. .... It contains small quantities of uranium (238U), thorium (232Th), and...

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