Bauxite calcining rotary kilns are lined with ________________ bricks?
Correct answer: C. 85% alumina
- A. Fireclay
- B. Carbon
- C. 85% alumina
- D. Corundum
Explanation
Bauxite calcining kilns require a highly alumina-rich lining because of their high temperature and severe abrasion. Bricks containing about 85% alumina provide the required refractoriness and wear resistance.
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