Bayer's process is the main industrial method for refining bauxite to produce alumina (aluminium oxide, Al₂O₃). Bauxite is the most important ore of aluminium, typically containing 30% to 50% aluminium oxides. The process involves dissolving the aluminium hydroxide components of bauxite in a solution of sodium hydroxide (caustic soda) under high pressure and temperature, separating impurities, and then precipitating pure aluminium hydroxide, which is then calcined to produce alumina.
The metal extracted from bauxite ore using Bayer's process is
Asked in WBCS Main Paper 4 2022 · Topic: Metals, Minerals, Ores: Properties, Uses (Extraction of metals from concentrated ores (roasting, calcination, smelting, electrolytic reduction))
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