Selectively leaching valuable metals from laterite nickel ore by ammonium chloride

被引：0
|
作者：
Li J.-H. [1 ]
Xu Z.-F. [1 ]
Gao Y. [2 ]
Li D.-S. [1 ]
Liu Y. [1 ]
Zhao C.-D. [1 ]
机构：
[1] School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou
[2] Henan Institute of Metallurgy Co., Ltd., Zhengzhou
来源：
Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals | 2019年 / 29卷 / 05期
关键词：
Ammonium chloride; Ion activity; Laterite nickel ore; Leaching mechanism; Selective leaching;
D O I：
10.19476/j.ysxb.1004.0609.2019.05.18
中图分类号：
学科分类号：
摘要：
The hydro-chloride leaching can reduce the impurity ion leaching and consumption of acid effectively. The selectively leaching valuable metals from laterite nickel ore with ammonium chloride hydrochloric acid solution were studied. The results show that when the leaching temperature is 90℃, hydrochloric acid concentration is 2 mol/L, solid-liquid ratio is 1:6 and leaching time is 1.5 h, the leaching rates of nickel, cobalt, manganese and iron are 89.45%, 88.56%, 90.23% and 19.30%, respectively, which achieve selectively leaching in relatively low acid concentration. Based on the selective leaching mechanism research, the addition of chlorine salt is beneficial to dissolution of goethite than other iron minerals in laterite ore, leading to increasing leaching of valuable metals from goethite mineral and suppression leaching of iron from other iron minerals. © 2019, Science Press. All right reserved.
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页码：1049 / 1057
页数：8
相关论文
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