FIELD: process engineering.
SUBSTANCE: invention relates to concentration of minerals and may be used using in selective flotation. Proposed method comprises sulphide flotation with medium collector, foamer and regulator to produce concentrate and tailings and further metallurgical processing. Before sulphide flotation, first selective flotation is carried out using complete water rotation from final tailings and finished concentrate in the presence of kerosene, butyl alcohol and foamer to obtain tailings and carbon-sulphide concentrate to be subjected to second selective flotation in strong-alkaline medium to obtain carbon product and first sulphide concentrate. Firs selective flotation wastes are directed to flotation to get second sulphide concentrate and tailings.
EFFECT: higher efficiency of separation.
4 cl, 1 dwg, 1 tbl, 4 ex
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