摘要
为探究杂质矿物对黄铜矿浸出的影响,考察了不同种类离子对黄铜矿浸出的影响。研究发现:Al2(SO4)3对铜浸出起促进作用,而Na2SO4、K2SO4、MgSO4对铜浸出起抑制作用;相比于SO2-4,Cl-由于可在黄铜矿表面产生疏松多孔硫层,加快浸出剂的扩散,从而对铜浸出起促进作用。动力学分析表明,添加Na+、K+、Al3+时,黄铜矿浸出过程由界面化学反应控制;而Mg2+存在时黄铜矿浸出由扩散反应控制;添加Cl-时,黄铜矿浸出受界面化学反应控制;添加SO2-4时,黄铜矿浸出由扩散反应控制。试验结果可以为黄铜矿湿法冶金过程提高铜浸出率提供参考。
The effects of impurity ions on chalcopyrite leaching were investigated to investigated influence of impurity minerals on chalcopyrite leaching. The results showed that Al2(SO4)3 promoted Cu leaching,while Na2 SO4,K2 SO4,MgSO4 inhibited Cu leaching. Compared with SO2-4,the presence of Cl-in solution promoted the formation of a porous sulfur layer that accelerating the diffusion of leaching agent,thereby enhancing chalcopyrite leaching. The kinetic analysis indicated that chalcopyrite leaching with low concentrations of Na+,K+and Al3+chalcopyrite leaching is controlled by surface chemical reaction while in the presence of MgSO4,it is controlled by diffusion. In addition,chalcopyrite leaching in the presence of Cl-was controlled by surface chemical reaction,chalcopyrite leaching in the presence of SO2-4 was controlled by diffusion. The results can provide reference in increase copper leaching rate in chalcopyrite hydrometallurgy.
作者
王洪铎
李育彪
王兵
王新宇
Wang Hongduo;Li Yubiao;Wang Bing;Wang Xinyu(School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan 430070,China)
出处
《金属矿山》
CAS
北大核心
2018年第12期99-103,共5页
Metal Mine
基金
国家自然科学基金项目(编号:51604205
51774223)
中央高校基本科研业务费专项(编号:2016IVA046
2017IVB018)
湖北省自然科学基金项目(编号:2016CFB268)
武汉理工大学自主创新研究基金项目(编号:2017-ZH-A1-03
2017-ZH-C1-18)
关键词
杂质离子
黄铜矿
浸出动力学
Impurity ions
Chalcopyrite
Leaching kinetics
作者简介
王洪铎(1994-),男,硕士研究生;通讯作者:李育彪(1985-),男,副教授,博士,硕士研究生导师。
