Selective recovery of lithium from spent lithium iron phosphate batteries using oxidation pressure sulfuric acid leaching system

被引：34

作者：

Wu, De-you ^{[1
,2
,3
,4
]}

Wang, Dong-xing ^{[1
,2
,3
]}

Liu, Zhi-qiang ^{[1
,2
,3
]}

Rao, Shuai ^{[1
,2
,3
]}

Zhang, Kui-fang ^{[1
,2
,3
]}

机构：

[1] Guangdong Acad Sci, Inst Resource Utilizat & Rare Earth Dev, Guangzhou 510650, Peoples R China

[2] State Key Lab Separat & Comprehens Utilizat Rare, Guangzhou 510650, Peoples R China

[3] Guangdong Prov Key Lab Rare Earth Dev & Applicat, Guangzhou 510650, Peoples R China

[4] Guangdong Brunp Recycling Technol Co Ltd, Foshan 528100, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2022年 / 32卷 / 06期

基金：

中国国家自然科学基金;

关键词：

spent LiFePO4 batteries; oxidation pressure leaching; separation; Li; Fe; lithium phosphate; ION BATTERIES; VALUABLE METALS; CATHODE MATERIAL; LIFEPO4; LI; PERFORMANCE; RECYCLE; SCRAPS; LI3PO4;

D O I：

10.1016/S1003-6326(22)65931-4

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Oxidation pressure leaching was proposed to selectively dissolve Li from spent LiFePO4 batteries in a stoichiometric sulfuric acid solution. Using O-2 as an oxidant and stoichiometric sulfuric acid as leaching agent, above 97% of Li was leached into the solution, whereas more than 99% of Fe remained in the leaching residue, enabling a relatively low cost for one-step separation of Li and Fe. And then, by adjusting the pH of leachate, above 95% of Li was recovered in the form of the Li3PO4 product through iron removal and chemical precipitation of phosphate.

引用

页码：2071 / 2079

页数：9

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