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 Mengyao Qi;Weijun Peng;Wei Wang;Yijun Cao;Longyu Zhang;Yukun Huang

作者机构：School of Chemical EngineeringZhengzhou UniversityZhengzhou 450001China Zhongyuan Critical Metals LaboratoryZhengzhou UniversityZhengzhou 450001China The Key Lab of Critical Metals Minerals Supernormal Enrichment and ExtractionMinistry of EducationZhengzhou 450001China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2024年第34卷第8期

页      面：1179-1196页

核心收录：

学科分类：081902[工学-矿物加工工程] 0819[工学-矿业工程] 08[工学] 

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 

主　　题：Novel molecule depressant Molybdenite Chalcopyrite Flotation separation Selective depression 

摘      要：A novel small molecule depressant(M-DEP)was used to separate chalcopyrite and molybdenite via *** results showed that M-DEP had an excellent selective depression on molybdenite,while had little effect on the flotation of *** adsorption capacity of M-DEP on the surface of molybdenite was greater than that on chalcopyrite *** 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 ***,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 ***,M-DEP had a super selective depression on *** study provided a novel depressant and approach for the deep separation of chalcopyrite and molybdenite via flotation.