Abstract: A process aimed to treat and recycle the major elements in LiMn₂O₄-based lithium-ion battery is introduced. The results show that LiMn₂O₄ can be dissolved efficiently by 2mol·L^-1 HNO₃ + 1mol·L^-1 H₂O₂ solution, especially after the LiMn₂O₄ is treated under 600℃, and the best ratio of solid/liquid is 65g·L^-1. With this technology, the recycling rate of Mn can reach 98% and the purity of Li₂CO₃ can be more than 97%.

Key words: lithium-ion secondary battery, LiMn₂O₄, recycle

摘要： 介绍了锰酸锂废旧锂离子电池经放电处理后, 再对其进行拆解→活性物质剥离→酸溶→沉淀回收Mn、Li等工艺处理, 有效地回收了其中的锰和锂。实验结果表明：用2mol·L^-1的HNO₃+1mol·L^-1的H₂O₂体系，在固液比为65g·L^-1的情况下对经过600℃处理的锰酸锂进行酸溶效果最佳，LiMn₂O₄的溶解率为100％，锰的回收率达98％，所得Li₂CO3沉淀纯度可达97％以上。

关键词: 锂离子电池, LiMn₂O₄, 回收