QUANTUM CHEMICAL MECHANISM ON THE SURFACE OXIDATION AND FLOTATION OF SULPHIDE MINERALS

来源期刊：中国有色金属学报(英文版)1991年第1期

论文作者：Wang Dianzuo Long Xiangyun Sun Shuiyu

文章页码：20 - 27

Key words：sulphide minerals, oxidation, flotation, galena, pyrite, quantum chemistry

Abstract: The surfaces of galena and pyrite, the adsorption of oxygen, and the reactions of ethyl xanthate on the sulfides were studied using quantum chemical calculations. In addition, the surface electron structures of the minerals were discussed. According to the results, the mechanisms of ionic exchange reaction and dixanthogen adsorption for the xanthate flotation of galena and pyrite were explained. The important role of oxygen in collector and collectorless flotation processes was also investigated.