湿法冶金2026，Vol.45Issue(3)：308-316,9.DOI:10.13355/j.cnki.sfyj.2026.03.005
碳热还原—两步浸出法回收退役三元锂电池中的锂
Recovery of Lithium from Retired Ternary Lithium Batteries by Carbothermal Reduction—Two-step Leaching Method
摘要
Abstract
The selective recovery of lithium from retired ternary lithium batteries by carbothermal reduction-two-step leaching(water leaching-acid leaching)process was studied.The effects of carbothermal reduction and leaching test conditions on lithium leaching were investigated.The results show that the cathode powder and activated carbon are compounded according to the ratio of carbon mass fraction of 27％.After roasting at 600℃ for 90 min,the roasting product is mixed with ultrapure water according to the solid-liquid mass volume ratio of 1/18,and then 83％of the theoretical amount of sulfuric acid is added dropwise.After leaching at 65℃ for 20 min,the lithium leaching rate is more than 98％,while the leaching rates of nickel,cobalt and manganese are less than 5％,and the lithium recovery effect is better.关键词
退役三元锂电池/锂/碳热还原/硫酸/浸出/回收Key words
retired ternary lithium battery/lithium/carbothermal reduction/sulfuric acid/leaching/recovery分类
矿业与冶金引用本文复制引用
张敏,吴晓倩,陈明,李洪博,胡振光..碳热还原—两步浸出法回收退役三元锂电池中的锂[J].湿法冶金,2026,45(3):308-316,9.基金项目
广西壮族自治区科技计划项目(桂科AB24010018). （桂科AB24010018）
