The invention discloses a method for floating high-
sulfur gold-bearing
copper ore, which aims at solving the problems that the existing
beneficiation method is lower in
copper and gold
recovery rate under high-alkali condition, and problems that
xanthate and black
powder are adopted as high-
sulfur gold-bearing
copper ore collecting agents, the collecting power is stronger, the selectivity is poor, the separation difficulty of copper and
sulfur can be aggravated and the consumption of inhibitors is increased. The method comprises the steps of by adopting
lime and
sodium metabisulfite as an ore pulp pH
regulator and a
pyrite inhibitor, and the mixture of
isopropyl xanthogen
propionitrile ester, black
powder acid and ethyl dithiocarboxyl
propionitrile ester according to certain proportion as a collecting
foaming agent, carrying out ore
grinding, rough concentration, primary
scavenging, secondary
scavenging, primary concentration, and secondary concentration on a crude ore, thus realizing the high-efficiency
recovery on copper and gold in the high-sulfur gold-bearing
copper ore. According to the method, through reasonable combination and addition of medicaments, the
selective adsorption of the collecting agent on target mineral-copper
pyrite and other
copper sulfide minerals and gold minerals can be reinforced, and the copper
recovery rate and the gold recovery rate can be improved.