Flotation behaviors of chalcopyrite and galena using ferrate(Ⅵ) as a depressant  

作　　者：Yongxing Zheng Yusong Huang Panjin Hu Xianhui Qiu Jinfang Lv Lingyun Bao 

机构地区：[1]State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,Kunming University of Science and Technology,Kunming 650093,China [2]Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China [3]Faculty of Resource and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China

出　　处：《International Journal of Mining Science and Technology》2023年第1期93-103,共11页矿业科学技术学报（英文版）

基　　金：supported by the National Natural Science Foun-dation of China(Nos.51964027 and 52264028);Basic Research Project for High-level Talents of Yunnan Province(No.KKS2202152011);open foundation of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization(No.CNMRCUKF1602).

摘　　要：This paper investigated the effects of potassium ferrate(PF)on the flotation performances of chalcopyrite and galena.The flotation results showed that PF obviously depressed galena,but had little effects on the floatability of chalcopyrite within pH range of 4.0–12.0.Zeta potential tests showed that the addition of PF induced the formation of more amounts of hydrophilic species on the surface of galena under an alkaline environment.Industrial grade O-isopropyl-N-ethyl thionocarbamate(IPETC)chemically adsorbed on the surface of the PF-treated chalcopyrite and galena after its addition.Contact angle measurements showed that with the addition of PF,the contact angle of the galena surface significantly decreased compared with the chalcopyrite surface.Localized electrochemical impedance spectroscopy(LEIS)tests showed that the addition of PF increased the impedance of the galena surface.X-ray photoelectron spectroscopy(XPS)analyses revealed that the formation of hydrophilic species,namely lead sulfite,lead hydroxide and ferric hydroxide,on the galena surface,decreased its floatability in the presence of PF,while the formation of hydrophobic species,namely copper disulfide and elemental sulfur,on the chalcopyrite surface,maintained its floatability.Finally,a descriptive model for the reaction of PF with chalcopyrite and galena was proposed.

关 键 词：FLOTATION CHALCOPYRITE GALENA Potassium ferrate 

分 类 号：TD952[矿业工程—选矿]