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What is Calcium Oxide in Bayer Process Explained about?

The Bayer process is used to refine alumina from bauxite ore. It involves four main steps: digestion, clarification, precipitation, and calcination. In digestion, bauxite is mixed with hot caustic soda in autoclaves to dissolve the alumina. Undissolved materials form red mud. Precipitation involves seeding and crystallization to recover aluminum hydroxide. Finally, calcination involves heating the crystals to remove water and produce pure aluminum oxide (alumina).

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