中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
Vol. 1 No. 1 October 1991 |
(Central South University of Technology, Changsha 410083, China)
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.
Key words: sulphide minerals, oxidation, flotation, galena, pyrite, quantum chemistry