以硫氨酯为捕收剂，对六方硫镍矿（Ｎｉ３Ｓ２）和辉铜矿（Ｃｕ２Ｓ）的浮选行为以及高冰镍的浮选分离进行了研究。试验结果表明，硫氨酯对辉铜矿捕收能力强，对六方硫镍矿捕收能力弱，具有很好的选择性捕收性能，有利于高冰镍的浮选分离，能很好地降低铜精矿和镍精矿的互含。通过药剂结构、性能计算分析和ＸＰＳ测试证实，硫氨酯捕收Ｃｕ２Ｓ作用强，是化学吸附，捕收Ｎｉ３Ｓ２作用弱，是物理吸附。 The flotation behavior of Ni3S2 and Cu2S and the flotation separation of high  Ni  Ni were investigated using thioureas as collector. The experimental results show that thioureas have strong catching ability on chalcopyrite and weak collecting ability on hexagonal sulfur-nickel ores, and have good selective catching property, which is good for flotation separation of high  ice  nickel and can reduce copper Concentrates and nickel concentrate each other. Through drug structure, performance analysis and XPS test confirmed that the role of thiourethane capture Cu2S strong chemical adsorption, capture the weak role of Ni3S2 is a physical adsorption.