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金属矿山 ›› 2018, Vol. 47 ›› Issue (12): 99-103.

• 矿物工程 • 上一篇    下一篇

杂质离子对黄铜矿浸出的影响机理研究

王洪铎,李育彪,王兵,王新宇   

  1. 武汉理工大学资源与环境工程学院,湖北 武汉 430070
  • 出版日期:2018-12-15 发布日期:2019-01-17
  • 基金资助:

    基金项目: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)。

Fundamental Study of Different Impurity Ions on Chalcopyrite Leaching Process

Wang Hongduo,Li Yubiao,Wang Bing,Wang Xinyu2   

  1. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China
  • Online:2018-12-15 Published:2019-01-17

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。

关键词: 杂质离子, 黄铜矿, 浸出动力学

Abstract: 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 Na2SO4, K2SO4, 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.

Key words: Impurity ions, Chalcopyrite, Leaching kinetics