六十年代以前,我国在多金属硫化矿浮选方面采用氰化物作为闪锌矿与黄铁矿等的抑制剂,但从1970年以来,大力开展了无氰及少氰浮选试验的研究工作,並在生产上推广应用,取得了良好的成绩,也积累了大量的经验和资料。我国多金属硫化矿选厂,近年来在试验研究及生产实践方面,曾用过不少无氰与少氰药剂组合,主要的有下列一些: Before the 1960s, cyanide was used as a suppressant for sphalerite and pyrite in the flotation of polymetallic sulfide ores. However, since 1970, research work on cyanide-free and less-cyanide flotation has been vigorously carried out , And in the promotion of production applications, has made good achievements, but also accumulated a wealth of experience and information. China’s polymetallic sulphide ore processing plant, in recent years in experimental research and production practices, have used a lot of cyanide and cyanide agent combinations, the main ones are as follows: