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Kinetics of chlorination of chromite

Abstract : Chlorination can be an efficient alternative for the physical beneficiation of refractory metals' bearing materials. The chlorination of a chromite mineral was studied up to 1050 °C using thermogravimetric analysis. The effects of the gas flow rate, temperature and partial pressure of the reactive gases on the reaction rate were studied in isothermal conditions. Only FeCr 2O 4 could be chlorinated up to 1000 °C by Cl 2+O 2 and Cl 2+N 2 gas mixtures generating chromium oxychloride (CrO 2Cl 2) that can be recovered by cooling the gas phase. The oxychlorination can ameliorate the characteristics of chromite bearing materials and/or the recovery of the chromium compounds from its wastes.
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Submitted on : Tuesday, April 18, 2017 - 10:10:57 AM
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Ndue Kanari, I. Gaballah. Kinetics of chlorination of chromite. Annual TMS Meeting, 1998, SAN ANTONIO, TX, United States. pp. 1333-1341. ⟨hal-01509531⟩



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