A novel molybdenite depressant for efficient selective flotation separation of chalcopyrite and molybdenite  

作　　者：Mengyao Qi Weijun Peng Wei Wang Yijun Cao Longyu Zhang Yukun Huang 

机构地区：[1]School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China [2]Zhongyuan Critical Metals Laboratory,Zhengzhou University,Zhengzhou 450001,China [3]The Key Lab of Critical Metals Minerals Supernormal Enrichment and Extraction,Ministry of Education,Zhengzhou 450001,China

出　　处：《International Journal of Mining Science and Technology》2024年第8期1179-1196,共18页矿业科学技术学报（英文版）

基　　金：support from the Project of Zhongyuan Critical Metals Laboratory(No.GJJSGFYQ202334);Natural Science Foundation of Henan Province(No.242300420002);National key research and development program(No.2020YFC1908804);National Natural Science Foundation of China(No.51804275).Moreover,we also thank Modern Analysis and Gene Sequencing Centre in Zhengzhou University.

摘　　要：A novel small molecule depressant(M-DEP)was used to separate chalcopyrite and molybdenite via flotation.The results showed that M-DEP had an excellent selective depression on molybdenite,while had little effect on the flotation of chalcopyrite.The adsorption capacity of M-DEP on the surface of molybdenite was greater than that on chalcopyrite surface.The adsorption of M-DEP reduced the floatability of molybdenite and had less effect on the floatability of chalcopyrite,which was due to its different adsorption modes on the surface of the two minerals.Furthermore,the interaction between chalcopyrite and M-DEP was mainly chemical interaction,and almost all of the adsorbed M-DEP molecules were removed and replaced by sodium butyl xanthate(SBX).By contrast,hydrophobic interaction was the main way in which M-DEP was adsorbed on the molybdenite surface with little chemical interaction,which was less interfered by SBX addition.Therefore,M-DEP had a super selective depression on molybdenite.The study provided a novel depressant and approach for the deep separation of chalcopyrite and molybdenite via flotation.

关 键 词：Novel molecule depressant MOLYBDENITE CHALCOPYRITE Flotation separation Selective depression 

分 类 号：TD95[矿业工程—选矿] TD923