Abstract

Kyanite, mullite and model kyanite ore carbochlorination processing was investigated in laboratory experiments and thermodynamics' calculations. The extraction of 94% alumina and silica takes place as a result of calcined kyanite carbochlorination at 1300°C for 90min at normal pressure. Kyanite processing into AlCl3+SiCl4 gas mixture is proposed for high purity alumina, nanodispersed silica and solar-grade silicon production.

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