METHOD FOR FLOTATION SEPARATION OF SULPHIDE MINERALS USING VEGETABLE MODIFIER

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FIELD : technological processes. SUBSTANCE : invention relates to dressing of minerals, particularly to flotation extraction of sulfide minerals containing noble metals from concentrates, and can be used in flotation dressing of sulphide copper-zinc pyrite-containing ores, non-sulfide iron ores, as well as ores of rare and noble metals, coal and mining raw materials. Method for separation of pyrite and chalcopyrite from ores containing precious metals comprises conditioning of ground pulp with sulfhydric collector, introduction of surface modifier and foaming agent and extraction of copper concentrate into the foam product of floatation. Surface modifier is represented by an extract of stems and leaves of cow parsnip, the ratio of the collector and surface modifier is 1 : (0.5-20). EFFECT : higher efficiency of floatation. 1 cl, 1 tbl, 17 ex