High Purity Nickel Recovery from an Industrial Sidestream Using Concentration and Liquid-Liquid Extraction Techniques

被引：2

作者：

Hu, Fang ^{[1
,3
]}

Wilson, Benjamin P. ^{[1
]}

Han, Bing ^{[2
]}

Zhang, Jianxin ^{[2
]}

Louhi-Kultanen, Marjatta ^{[2
]}

Lundstrom, Mari ^{[1
]}

机构：

[1] Aalto Univ, Sch Chem Engn, Dept Chem & Met Engn CMET, Hydromet & Corros, POB 12200, Aalto 00076, Finland

[2] Aalto Univ, Sch Chem Engn, Dept Chem & Met Engn CMET, Chem Engn Aqueous Syst, POB 16100, Aalto 00076, Finland

[3] Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

来源：

JOM | 2020年 / 72卷 / 02期

关键词：

DIRECT SOLVENT-EXTRACTION; SODIUM-SALTS; SULFATE; PURIFICATION; COBALT; SEPARATION;

D O I：

10.1007/s11837-019-03928-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article outlines an alternative flowsheet for the purification of a multi-metal industrial sidestream (16.3 g/l Ni, 0.7 g/l Co, 0.6 g/l Ca and 1.6 g/l Mg) to allow high-purity nickel recovery. The methodology comprises an initial evaporation step to achieve Ca removal followed by impurity (Ca, Mg) and valuable (Co, Ni) element separation via two-step solvent extraction with organophosphorus extractants. Results indicate that > 80% of Ca is selectively removed as CaSO4 center dot 2H(2)O by evaporation with a concentration degree > 6. In the following treatment, 90% of residual Ca (0.6 g/l) can be selectively extracted with Na-D(2)EHPA. The subsequent solvent extraction step with Na-Cyanex 272 separates Co (> 99%) and Mg (> 95%). The resultant nickel sulfate solution (61.7 g/l Ni, 0.3 g/l Mg and Co 0.007 g/l) of > 99.5% purity can be directly integrated into state-of-the-art nickel recovery processes.

引用

页码：831 / 838

页数：8

共 34 条

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