Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China.
State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, Yunnan, China.
Environ Sci Pollut Res Int. 2022 Sep;29(42):62839-62850. doi: 10.1007/s11356-022-21896-2. Epub 2022 Jul 13.
During zinc hydrometallurgy process, the chloride ions in the materials go into the leaching solution, which have abominable effects on equipment, electrowinning, and environment. So, it is necessary to remove chloride ions from zinc sulfate solution. The present review outlines the current research of removal methods of chlorine by holistically highlighting the advantages and mechanisms. The main techniques used to remove chloride ions from zinc sulfate solution are also discussed in detail. Among the methods, the precipitation method using copper slag to remove chlorine is widely used and the chlorine removal rate is up to 98%. In addition, the combination of electrochemistry and nanofiltration technology can form a closed-loop production process with less waste output and near-zero emissions. In addition, the challenges and possible future directions of chlorine removal from zinc sulfate solutions are also delineated.
在锌湿法冶金过程中，材料中的氯离子会进入浸出溶液，这对设备、电积和环境都有恶劣的影响。因此，有必要从硫酸锌溶液中去除氯离子。本综述全面地突出了优点和机制，概述了当前去除氯的研究。还详细讨论了从硫酸锌溶液中去除氯离子的主要技术。在这些方法中，使用铜渣沉淀法去除氯的方法被广泛应用，氯去除率高达 98%。此外，电化学与纳滤技术相结合，可以形成一个废物输出量少、排放接近零的闭环生产工艺。此外，还描绘了从硫酸锌溶液中去除氯的挑战和可能的未来方向。
