USE OF THIOURACILS AS SELECTIVE DEPRESSANTS FOR THE FLOTATION SEPARATION OF COPPER AND NICKEL SULPHIDE MINERALS

摘要

CIL 580ABSTRACT FOR THE DISCLOSUREA process is disclosed for separating nickelsulphide minerals from copper sulphide minerals with whichthey are associated in a metallurgical concentrate throughuse, as nickel sulphide depressant, 2-thiouracil or 6-methyl-2-thiouracil. As compared with conventionallyused sodium cyanide, the new proposed depressants provideequal or superior metallurgy, are less pH dependent andallow greater flexibility in floatation circuit conditions.