Alumina is used for the production of aluminium metal, through the Hall–Héroult electrochemical smelting process The Bayer Process is the most economic means of obtaining alumina from bauxite Other processes for obtaining alumina from metal ores are also in use in some refineries, particularly in China and Russia, although these make up a relatively small percentage of global production
Bauxite is the ore from which Aluminium is refined and is found in many places around the world, large deposits in Brazil in particular It is not found in any one specific city How is aluminum
how is bauxite refined - gcpain Bauxite Markets Bauxite is the ore of aluminium It is refined into alumina and then smelted into aluminium The bauxite market continues to be impacted by >>ONLINE; how is bauxite ore refined crusherasia Bauxite Wikipedia, the free encyclopedia Bauxite is an aluminium ore and is the main source of aluminium This form of rock consists
Unlike the base metal ores, bauxite does not require complex processing because most of the bauxite mined is of an acceptable grade Ore quality can be improved by relatively simple and inexpensive processes for removing clay, known as “beneficiation”, which include washing, wet screening and mechanical or manual sorting
With the two processes combined, bauxite ore can be processed into alumina, which is then converted into aluminum Today, the Bayer process is virtually unchanged and is used to produce nearly all of the world’s alumina supply, as an intermediate step in aluminum production
Bauxite, the most important ore of aluminium, contains only 30–60% aluminium oxide (Al 2 O 3), the rest being a mixture of silica, various iron oxides, and titanium dioxide The aluminium oxide must be purified before it can be refined to aluminium metal
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