Treatment of chalcopyrite

Details Treatment of chalcopyrite Treatment of chalcopyrite

C - Chemistry, Metallurgy

22

B

53/116, 53/276,

C22B 15/00 (2006.01) C22B 1/00 (2006.01) C22B 1/06 (2006.01) C22B 5/02 (2006.01)

Patent

CA 1050767

ABSTRACT OF THE DISCLOSURE A process for the treatment of chalcopyrite ore or concentrate is disclosed, The chalcopyrite is contacted with an excess of gaseous sulphur dioxide in the substantial absence of oxygen at a temperature in the range between 700°C, and the fusion point of the chalcopyrite, In a preferred embodiment the gaseous sulphur dioxide contains water, In another preferred embodiment the treated chalcopyrite is heated, in the substantial absence of oxygen, to a molten state so as to facilitate separation of a copper-rich phase,

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