从废旧电池再生电池级碳酸锂工业化路线探索  

Exploration on Low Cost and Industrialization Route for Regenerating Lithium Carbonate from Waste Lithium-ion Batteries

作　　者：丁俊华 郑扬贤 赖兴洪 陈肯畅 吴晟杰 李家玉 李超 DING Junhua;ZHENG Yangxian;LAI Xinghong;CHEN Kenchang;WU Shengjie;LI Jiayu;LI Chao(Dongguan University of Technology,Guangdong Dongguan 523830,China)

机构地区：[1]东莞理工学院,广东东莞523830

出　　处：《广州化工》2025年第6期189-193,共5页GuangZhou Chemical Industry

基　　金：广东省自然科学基金(2022A1515010972)和(2021B1515140025)。

摘　　要：废旧锂离子电池回收处置亟待解决。然而,当前的提炼碳酸锂方法成本较高,影响废旧电池回收产业健康发展。本项目采用双氧化物体系选择性回收废旧磷酸铁锂正极材料粉中的锂成分,研究对象选用一吨回收废料,采用最经济实用的酸浸方法,探究耗能最少的除杂工艺路线。开发酸浸液经短流程除杂后进行沉锂,获得的碳酸锂产品净含量大于99.8%,达到电池级碳酸锂要求。锂的首次回收率达到85%,总回收率可达95%,具有高度的工业化应用潜力。The recycling and disposal of waste lithium-ion batteries needs to be solved urgently,and the current method of refining lithium carbonate has a high cost,which affects the healthy development of the waste battery recycling industry.In this project,a partial sulfuric acid and hydrogen peroxide system is used to selectively recover lithium in the cathode material powder of waste lithium iron phosphate,and the most economical and practical acid leaching method is explored using one ton of waste as raw material,and the process route of impurity removal with the least energy consumption is explored.It was explored that the acid leaching solution was immersed in lithium after a short process of impurities,and the main content of lithium carbonate products obtained was 99.8%,which met the requirements of batterygrade lithium carbonate.With a first-time recovery rate of 85%and a total recovery rate of up to 95%,lithium has a high potential for industrial applications.

关 键 词：磷酸铁锂 再生 小规模工业化 

分 类 号：TQ09[化学工程]