Separation of valuable metals in spent LiNi0.46Co0.2Mn0.34O2 battery by shear induced dissociation coupling with ultrafiltration

IF 4.8 2区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Hydrometallurgy Pub Date : 2019-11-01 DOI:10.1016/j.hydromet.2019.105127

Jing Gao , Yunren Qiu , Maolin Li , Huishang Le

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引用次数: 7

Abstract

There are valuable metals in spent ternary lithium-ion batteries. A method for selective separation of Al (III), Fe (III), Li (I), Mn (II), Co (II), Ni (II) and Cu (II) from acid leaching of spent LiNi_0.46Co_0.2Mn_0.34O₂ battery was proposed. Al (III) and Fe (III) are firstly separated by chemical precipitation, and other metal ions are formed polymer-metal complexes by adding polyacrylate sodium (PAAS) as complexing agent. According to the difference of shear stabilities of PAA-metal complexes, selective separation of metal ions was fulfilled by shear induced dissociation coupling with ultrafiltration using rotating disk membrane (RDM). The shear induced dissociation mechanism of polymer-metal complex was studied. Compared with the traditional separation methods, such as acidification and extraction, shear induced dissociation coupling with ultrafiltration without the consumption of acid and alkali, is green and environmentally friendly effective method for the recovery of metal ions.

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剪切诱导解离-超滤耦合分离废LiNi0.46Co0.2Mn0.34O2电池中有价金属

废旧三元锂离子电池中含有贵重金属。提出了一种从废LiNi0.46Co0.2Mn0.34O2电池酸浸中选择性分离Al (III)、Fe (III)、Li (I)、Mn (II)、Co (II)、Ni (II)和Cu (II)的方法。Al (III)和Fe (III)首先通过化学沉淀法分离，其他金属离子通过加入聚丙烯酸钠(PAAS)作为络合剂形成聚合物-金属配合物。根据paa -金属配合物剪切稳定性的差异，采用旋转圆盘膜(RDM)对金属离子进行剪切诱导解离耦合超滤，实现金属离子的选择性分离。研究了聚合物-金属配合物的剪切离解机理。与酸化、萃取等传统分离方法相比，剪切诱导解离耦合超滤不消耗酸碱，是一种绿色环保的回收金属离子的有效方法。

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来源期刊

Hydrometallurgy 工程技术-冶金工程

CiteScore

9.50

自引率

6.40%

发文量

144

审稿时长

3.4 months

期刊介绍： Hydrometallurgy aims to compile studies on novel processes, process design, chemistry, modelling, control, economics and interfaces between unit operations, and to provide a forum for discussions on case histories and operational difficulties. Topics covered include: leaching of metal values by chemical reagents or bacterial action at ambient or elevated pressures and temperatures; separation of solids from leach liquors; removal of impurities and recovery of metal values by precipitation, ion exchange, solvent extraction, gaseous reduction, cementation, electro-winning and electro-refining; pre-treatment of ores by roasting or chemical treatments such as halogenation or reduction; recycling of reagents and treatment of effluents.