Extraction of Impurities from Leaching Solution of Cathode Active Material of Spent Lithium Ion Batteries by Sulfuric Acid

被引：0
|
作者：
Yi A.-F. [1 ,2 ]
Zhang J. [1 ,2 ]
Zhu Z.-W. [1 ,2 ]
Qi T. [1 ,2 ]
机构：
[1] National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
[2] Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2019年 / 40卷 / 10期
关键词：
Lix54; Lix84; P204; P507; Removing Al; Solvent extraction; Ternary lithium battery;
D O I：
10.12068/j.issn.1005-3026.2019.10.012
中图分类号：
学科分类号：
摘要：
The effect of the formulation by the acid phosphine extractants of P204 with Lix54 and of P507 with Lix84 on the Al extraction from sulfuric acid leaching solution of cathode active materials of spent lithium ion batteries was studied. The results indicate that the P507+Lix84 formulation has the best extraction and separation effect on Al/Mn. When the optimal formulation of 5%P507+5%Lix84/kerosene is used and Va/Vois 1:1 with pH of 4.0, the single-staged extraction rate of Al, Cu, Co, Ni, Mn and Li is 89.1%, 80.8%, 3.4%, 2.6%, 3.2% and 0.3%, respectively. When Va/Vo is 1:4, the Al concentration is 0.88 g•L-1in the mother liquid and the Al extraction rate is higher than 97.7% after the two-staged(theoretical-level)extraction. With 2.0 mol/L sulfuric acid solution in the oil phase and Va/Vo of 10:1, the Al concentration is 0.79 g•L-1and the Al stripping rate is higher than 99.0% after the two-staged(theoretical-level)stripping process. © 2019, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：1430 / 1436
页数：6
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