FIELD: reagents for flotation of minerals. SUBSTANCE: foaming agent activator comprises, wt. %: pine oil, 1-10; sodium sulfide in 10% solution, 10-30; hydrogen peroxide in 50% solution, 15-36; sodium bicarbonate, 20-40. Composition is intended for flotation of finely divided minerals of sulfide type. It serves as additional reagent for flotation or as sole reagent for repeated treatment of flotation waste. EFFECT: good selectivity, higher content of the desired component in concentrate. 6 cl, 2 ex, 3 tbl
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