FIELD: mining engineering.
SUBSTANCE: technology includes ragging, reduction of head ore in presence of water with subsequent conditioning with collectors, frothers and modifying agents. Solution of quaternary ammonium salts, formula CnH2n+1-CH2-N+H2-CH3O-PH(O)OCH3, where n=9-18, in organic solvent "Toplinol" is used as reagent of the collector and modifying agent 1-30%.
EFFECT: invention enables to increase recovery and quality of bulk polymetallic concentrate at flotation of polymetallic ores and gold concentrate by content of gold and silver at a simultaneous recovery increase at gold ore flotation.
2 cl, 6 ex, 8 tbl
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