Describe Bayer's process for construction of bauxite
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The Hall–Héroult process is the major industrial process for smelting aluminium. It involves dissolving aluminium oxide (alumina) (obtained most often from bauxite, aluminium's chief ore, through the Bayer process) in molten cryolite, and electrolysing the molten salt bath, typically in a purpose-built cell.
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Al2O3.2H2O+NaOH=Na2AlO2+H2O
Na2ALO2+H2O=Al(OH)3+NaOH
Al(OH)3=Al2O3+H2O
Na2ALO2+H2O=Al(OH)3+NaOH
Al(OH)3=Al2O3+H2O
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