巯基乙酸抑制黄铜矿作用机理探讨  

A Study of the Chalcopyrite Depression Mechanism by Thioglycolic Acid

作　　者：黄虎辉 王建军[1] 耿志强[1] 高志勇[1] 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]中国五矿长沙矿山研究院,湖南长沙410082

出　　处：《矿产保护与利用》2015年第6期22-26,共5页Conservation and Utilization of Mineral Resources

基　　金：国家自然科学基金项目(51104179)

摘　　要：巯基乙酸作为一种高效的黄铜矿浮选抑制剂,通过纯矿物浮选实验、浮选溶液化学计算以及药剂分子结构模拟,并结合红外光谱检测的结果,探讨了巯基乙酸抑制黄铜矿的机理。研究表明:巯基乙酸抑制黄铜矿最佳pH值为10.0,巯基乙酸的主要组成成分HSCH_2COO-的-SH基团通过较强化学作用吸附于黄铜矿表面,亲水性的-COO-指向矿浆溶液中,在其表面形成稳定的亲水层,从而抑制黄铜矿的浮选。Thioglycolic acid（ TGA） is a highly efficient depressant for chalcopyrite flotation. In this work,pure mineral flotation experiments,solution chemistry calculation,molecular structure simulation and infrared spectroscopy were used to investigate the interaction mechanism of TGA with chalcopyrite.The results showed that,the optimal p H for the depressant performance of TGA is about 10. Under this pH level,TGA can adsorb on the chalcopyrite surface by its-SH group,while the hydrophilic group of-COO-will point outwards to the pulp solution,leading to a poor flotation recovery of chalcopyrite.

关 键 词：巯基乙酸 黄铜矿 抑制 浮选 

分 类 号：TD952.1[矿业工程—选矿]