FIELD: concentration of minerals; processing of sulfide ores of non-ferrous metals, massive ores and disseminated ores in particular.
SUBSTANCE: proposed method includes coarse and fine stage grinding, inter-stage copper floatation and main, check and re-cleaning procedures of copper and zinc floatation according to scheme of direct selective floatation with the use of collecting agent; coarse grinding of ore is carried out in the presence of carboxyl collecting agent in the amount of 2-5 g/t. Inter-stage copper floatation is performed by mixture of anion sulfhydryl and carboxyl collecting agents at mass ratio of 1: (0.01-0.40).
EFFECT: enhanced efficiency.
4 cl, 2 tbl, 2 ex
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