| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 214011 | International Journal of Mineral Processing | 2014 | 6 Pages |
Abstract
•Carbochlorination of kyanite can be used for metallurgical alumina production.•Mullitization co-process increases the carbochlorination extent of kyanite.•The dependence of carbochlorination rate obtained: Al2O3 < SiO2 < kyanite < mullite.
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 90 min at normal pressure. Kyanite processing into AlCl3 + SiCl4 gas mixture is proposed for high purity alumina, nanodispersed silica and solar-grade silicon production.
Related Topics
Physical Sciences and Engineering
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Chemical Engineering (General)
Authors
Andrey D. Kustov, Oleg G. Parfenov, Leonid A. Solovyov, Sergey N. Vereshchagin,