FIELD: mining.
SUBSTANCE: invention refers to concentration of minerals with flotation and can be implemented at processing as sulphide polymetallic, so oxidised gold containing ores, and also at additional recovery of gold and silver from earlier produced dumps of mining-concentrating production. The procedure consists in flotation at presence of xanthate, foaming agent and emulsion, containing silicon-organic liquid. As xanthate butyl xanthate is used, and as silicon-organic liquid silicon-organic polyethylsiloxane liquid is used; "ОППГ" is used as foaming agent. Polyvinyl alcohol and water are additionally introduced into emulsion; also ratio between silicon-organic polyethylsiloxane liquid, polyvinyl alcohol and water is from 79:0.5:17 to 81:1.5:20, while ratio of emulsion to butyl xanthate is from 0.5:1 to 1:1.
EFFECT: increased efficiency of flotation.
2 cl, 2 tbl, 4 ex
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