湿法冶金2025，Vol.44Issue(4)：459-466,8.DOI:10.13355/j.cnki.sfyj.2025.04.004
退役锰酸锂电池的碳热还原—酸浸回收工艺研究
Carbon-Thermal Reduction—Acid Leaching Recovery Process of Retired Lithium Manganate Oxide Batteries
摘要
Abstract
The recovery of valuable components manganese and lithium from retired lithium manganese oxide batteries by carbon-thermal reduction-acid leaching combined recovery process was studied.The mixed powder of lithium manganese oxide and graphite was roasted by carbon thermal reduction,and the roasted products were characterized by XRD,XRF,SEM,TG-DTA and other technologies.The results show that the best effect is achieved by roasting at 650 ℃ for 180 min,and the lithium manganese oxide in the roasted product is completely converted into manganese monoxide and lithium carbonate.The lithium carbonate in the sample powder can be extracted by water leaching,and the leaching rate of lithium carbonate is 86.15％.Manganese ions are extracted by acid leaching of sulfuric acid.Under the acid leaching conditions of acid leaching concentration of 3.5 mol/L,acid leaching temperature of 60 ℃,acid leaching time of 3 h,and liquid volume to solid mass ratio of 8/1,the highest leaching rate of manganese ions is 88％.The method can achieve the purpose of synchronous and efficient recovery of manganese and lithium from cathode materials,and has certain application value.关键词
废锰酸锂电池/碳热还原/酸/浸出/回收/锰/锂Key words
retired lithium manganese oxide batteries/carbon-thermal reduction/acid/leaching/recovery/manganese/lithium分类
矿业与冶金引用本文复制引用
杨志,李京伟,林银河,陈晨,王大龙,鲁颖炜,汤文明..退役锰酸锂电池的碳热还原—酸浸回收工艺研究[J].湿法冶金,2025,44(4):459-466,8.基金项目
国家自然科学基金资助项目(52111540265) （52111540265）
安徽省生态环境科技项目(2024hb008) （2024hb008）
西昌市科技项目(JSYJ-2024-04). （JSYJ-2024-04）
