Enhanced inhibition of talc flotation using acidified sodium silicate and sodium carboxymethyl cellulose as the combined inhibitor  

作　　者：Jiwei Xue Huazhen Tu Jin Shi Yanni An He Wan Xianzhong Bu 

机构地区：[1]School of Resources Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China [2]State Key Laboratory of Mineral Processing,Beijing 100260,China [3]Northern Engineering&Technology Corporation,Dalian 116600,China

出　　处：《International Journal of Minerals,Metallurgy and Materials》2023年第7期1310-1319,共10页矿物冶金与材料学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos.52104266 and 52074206);Open Foundation of State Key Laboratory of Mineral Processing (No.BGRIMM-KJSKL-2021-19);the Natural Science Basic Research Program of Shaanxi Province (No.2021JQ-507);the Natural Science Project of Shaanxi Education Department (No.21JK0731);Key Research and Development Projects of Anhui Province (No.202104a07020012)。

摘　　要：The flotation separation of chalcopyrite and talc is challenging due to their similar natural floatability characteristics.Besides,it is usually difficult to effectively inhibit talc by adding sodium carboxymethyl cellulose(CMC)alone during chalcopyrite flotation.Here,a combined inhibitor comprising acidified sodium silicate(ASS)and CMC was employed to realize effective flotation separation of chalcopyrite and talc,and the combined inhibition mechanism was further investigated.Microflotation results showed that adding ASS strengthened the inhibitory effect of CMC on talc and improved the separation of chalcopyrite and talc.The zeta potential,Fourier transform infrared,and X-ray photoelectron spectroscopy analysis indicated that CMC was mainly adsorbed on the talc surface via hydroxyl and carboxyl groups.Moreover,the addition of ASS improved the adsorption of carboxyl groups.Furthermore,the adsorption experiments and apparent viscosity measurements revealed that adding ASS dispersed the pulp well,which reduced the apparent viscosity,improved the adsorption amount of CMC on the talc surface,and enhanced the inhibition of talc in chalcopyrite flotation.

关 键 词：TALC CHALCOPYRITE FLOTATION combined inhibitor apparent viscosity 

分 类 号：TD923[矿业工程—选矿] TD952