Theoretical Studies on the Structure-activity Relationships for Thionocarbamates as Selective Collectors for Copper Sulfide Minerals
The structure-activity relationships for four thionocarbamate collectors are discussed in this paper. These collector classes are alkyl alkyl thionocarbamates, allyl alkyl thionocarbamates, acyl alkyl thionocarbamates and alkoxylcarbonyl alkyl thionocarbamates. The main emphasis will be to highlight the differences between collectors and their affinities for copper and iron sulfide minerals on the basis of data on electronic-structure properties obtained by vacuum and solution density functional calculations, flotation experiments and analysis measurements. The mechanism of interaction of these collectors with sulfide minerals is also discussed with perturbation theory. The theoretical study results indicate that acyl alkyl thionocarbamates and alkoxylcarbonyl alkyl thionocarbamates have best performance in these agents as flotation collectors with improved collecting power for copper sulfide minerals and excellent selectivity against iron sulfide minerals, which are consistent with the experimental data reported in the literature.
Thionocarbamate Flotation collectors Sulfide ores Structure-activity relationships Density functional methods.
G. Y. Liu H. Zhong T. G. Dai L. Y. Xia
Institute of Chemistry and Chemical Engineering, Central South University, Changsha, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1549-1557
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）