FIELD: metallurgy.
SUBSTANCE: procedure for processing sulphide gold-copper concentrates with extraction of gold consists in cyanide leaching with additives of ammonia compounds at molar ratio NH3:CN=1-3. Also, cyanide leaching is performed at concentrations of sodium cyanide 0.05-0.15 g/l in leaching solution under conditions of automatic stabilisation of pH of solution and concentration of sodium cyanide. Leaching is carried out, replenishing solution with cyanide and ammonia. Cyanide and ammonia are replenished automatically with ammonia-cyanide solution.
EFFECT: optimisation of conditions of cyanide leaching.
2 cl, 2 tbl, 2 ex
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