FIELD: ore dressing. SUBSTANCE: invention relates to dressing gold-containing sulfide and mixed ores and floatation of gold-containing and nonferrous metal ores. Slurry is agitated in an alkaline medium with copper-containing activator of copper, pyrite, and precious metals in presence of sulfohydryl collectors and blowing agent. Copper minerals, pyrite, and precious metals are isolated in combined concentrate. As above mentioned activators, water-soluble copper polyphosphate complexes are used. EFFECT: enhanced efficiency of process. 1 tbl
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