Depressing behaviors and mechanism of disodium bis(carboxymethyl) trithiocarbonate on separation of chalcopyrite and molybdenite  

双(羧甲基)三硫代碳酸钠在铜钼硫化矿浮选分离中抑制机理（英文）

作　　者：Zhi-gang YIN Wei SUN Yue-hua HU Qing-jun GUAN Chen-hu ZHANG Yue-sheng GAO Ji-hua ZHAI 殷志刚;孙伟;胡岳华;管青军;张谌虎;高跃升;翟计划(中南大学资源加工与生物工程学院,长沙410083)

机构地区：[1]School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China

出　　处：《Transactions of Nonferrous Metals Society of China》2017年第4期883-890,共8页中国有色金属学报（英文版）

基　　金：Project(2016zzts109)supported by the Innovation Driven Plan of Central South University,China;Project(B14034)supported by the National 111 Project,China

摘　　要：This work focuses on the organic depressant,disodium bis(carboxymethyl)trithiocarbonate(DBT),as a selectivedepressant in copper?molybdenum sulfide flotation separation.Micro-flotation,Zeta potential,FTIR and XPS measurements werecarried out to investigate the selective depression mechanism of DBT on chalcopyrite.Zeta potential and FTIR measurementsrevealed that DBT had higher affinity for chalcopyrite than molybdenite and the XPS results of chalcopyrite before and aftertreatment with DBT further proved that DBT adsorbed on chalcopyrite surface.The investigation indicates that the mechanism ofDBT adsorbing on chalcopyrite is mainly physical adsorption.Locked circuit experiments were carried out and the results showedthat DBT could be considered as a cleaner option in commercial Cu?Mo flotation separation circuits.小分子有机抑制剂双(羧甲基)三硫代碳酸钠(DBT)是一种铜钼分离选择性抑制剂。动电位与红外光谱分析结果表明,DBT在黄铜矿表面的吸附强于辉钼矿,X射线光电子能谱进一步证明DBT吸附在黄铜矿表面,抑制剂DBT与在黄铜矿表面的吸附以物理吸附为主。铜钼混合精矿浮选分离试验结果表明,DBT是一种潜在的环境友好型铜钼分离抑制剂。

关 键 词：copper.molybdenum sulfide ore disodium bis(carboxymethyl) trithiocarbonate depressant flotation separation physical adsorption 

分 类 号：TD923.1[矿业工程—选矿]