Process for the separation of gold and silver from complex...

Details Process for the separation of gold and silver from complex... Process for the separation of gold and silver from complex...

C - Chemistry, Metallurgy

22

B

53/220

C22B 11/08 (2006.01) C22B 11/00 (2006.01)

Patent

CA 1172856

ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the separation of gold and silver from complex sulfide ores and concentrates which, in addition to the primary metals, contain constituents having an adverse effect on the separation of the noble metals, by heating the sulfide ore or concentrate at a temperature of 600-900 °C and a sulfur pressure of 0.2-1 atm in order to bring the complex metal compounds to a suitable form for subsequent alkalic cyanide leaching, and by separating the gold and silver-bearing cyanide solution from the undissolved residue.

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