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leaching process for aluminum processing

The extraction of aluminium involves two steps that is purification of bauxite by Baeyers process and electrolysis of alumina. 1. Purification of bauxite by Baeyers process In the Baeyers process the bauxite ore is heated with concentrated NaOH solution under pressure Aluminum is purified by leaching method.The alumina dissolves as sodium meta aluminate.

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