中文摘要：

纯矿物试验和人工混合矿试验表明,Ca（ClO）2与腐殖酸钠都对黄铁矿具有很好的抑制作用,而不抑制黄铜矿,二者组合使用能更加有效抑制黄铁矿.根据杨氏方程结合接触角的测定结果,计算矿物表面润湿能,结果说明腐殖酸钠和Ca（ClO）2组合抑制剂对黄铁矿的良好的抑制性能,是二者协同作用的结果.

英文摘要：

The flotation test results of pyrite and chalcopyrite show calium hypochlorate and sodium humate both are good depressants for pyrite and don＇t depress chalcopyrite. And mixed depressants can depress pyrite better. Based on contact angle test dates, mineral surface wetting energy were calculated by YanKs evacuation, its results show the reasons of good depression performance of mixed depressants is the synergism of calium hypochlorate and sodium humate.