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Low-temperature chlorination of chalcopyrite concentrates

Abstract : Chalcopyrite concentrates and their pure constituents were chlorinated by Cl2+N2 between 25 °C and 750 °C. The reaction products were analyzed by SEM, XRD and chemical analysis. The effect of gas flow rate and chlorine content of the gas mixture on the reaction rate were investigated. At room temperature, these solids start to react with chlorine giving metal and sulfur chlorides. Complete reaction is achieved at about 300 °C and the iron and sulfur chlorides were fully volatilized. The chlorination residue is composed of valuable metals' chlorides. A simplified flow-sheet for the treatment of chalcopyrite concentrates by chlorine was suggested.
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Submitted on : Tuesday, April 18, 2017 - 9:54:53 AM
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Ndue Kanari, Eric Allain, I. Gaballah. Low-temperature chlorination of chalcopyrite concentrates. 1998 Annual TMS Meeting, 1998, SAN ANTONIO, TX, United States. pp. 177-186. ⟨hal-01509497⟩



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