Pyrite flotation separation combined inhibitor and application thereof

The invention discloses a pyrite flotation separation combined inhibitor and application thereof, and belongs to the technical field of mineral processing. The pyrite flotation separation combined inhibitor comprises gardenia yellow and an inhibitor A, the inhibitor A is one of lime, sodium sulfite and calcium hypochlorite. The combined inhibitor selectively inhibits pyrite and has no inhibition effect on chalcopyrite. Therefore, the pyrite flotation separation combined inhibitor is applied to flotation of copper sulphide ore. And meanwhile, the grade of selected products can be artificially improved by adopting a branch series flow process, the sorting process is improved, and the medicine consumption and the energy consumption are reduced. According to the method, the combined inhibitor, the combined collecting agent and the technological process are matched, effective separation of the chalcopyrite and the pyrite is achieved, and the index of the copper sulphide ore is improved. 本发明公开了一种黄铁矿浮选分离组合抑制剂及其应用，属于