FIELD: oil and gas industry.
SUBSTANCE: method for improvement of surface behaviour contrast for gold ore sulphide minerals includes preliminary grinding with introduction of oxidiser and further flotation. Pulp is pretreated by grinding with addition of potassium permanganate and further extraction of size grade of 0.074+0 mm, pulp conditioning with addition of potassium butyl xanthogenate and potassium permanganate as oxidiser is carried out in ultrasonic bath with frequency of 20-60 kHz. Flotation process is carried out in two stages - the main and cleaning one - using potassium butyl xanthogenate (PBX) + foaming agent PM2.
EFFECT: improved gold extraction from refractory ore.
2 dwg, 1 tbl, 3 ex
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