化工矿物与加工2026，Vol.55Issue(5)：38-45,8.DOI:10.16283/j.cnki.hgkwyjg.2026.05.006
基于还原焙烧-水浸法的废旧三元锂电池正极材料选择性提锂工艺研究
Study on selective lithium extraction process of cathode materials for spent ternary lithium batteries based on reduction roasting-water immersion method
何昕阳 1刘晓凤 1刘卓齐 1王璎 1苏琦 1王建波1
作者信息
- 1. 西南科技大学 环境与资源学院,四川 绵阳 621010||固体废物处理与资源化教育部重点实验室,四川 绵阳 621010||四川省非金属矿粉体改性与高质化利用技术工程实验室,四川 绵阳 621010
- 折叠
摘要
Abstract
With the rapid expansion of the electric vehicle market,the number of waste lithium batteries is increasing day by day.Efficient recycling of waste lithium batteries not only helps to alleviate environmental pressure,but also achieves sustainable use of resources.In this paper,the waste ternary lithium battery was taken as the research object,and the anode graphite was used as the reducing agent to realize the selective extraction of lithium by reduction roasting-water immersion method.The effects of different roasting parameters on the selective leaching of lithium were systematically investigated.Combined with thermodynamic analysis,the reaction path of the carbothermal reduction process and the formation mechanism of the key intermediate phase were discussed.The results show that during the reduction roasting process,high valence transition metals such as Co,Ni and Mn are gradually reduced to CoO,NiO and MnO,and further reduced to metal elements with the increase of temperature.Under the condition of roasting temperature of 700℃and roasting time of 90 min,the leaching rate of lithium is 73.42%,which can effec-tively achieve the priority extraction of lithium.The research results can not only provide technical reference for the recycling of waste ternary lithium batteries,but also provide theoretical basis for the optimization of roasting process parameters and the design of reaction path.关键词
废旧三元锂电池/正极材料/负极材料/焙烧法/水浸法/热力学分析/选择性提锂Key words
waste ternary lithium battery/cathode material/anode material/roasting method/water immersion method/thermodynamic analysis/selective extraction of lithium分类
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何昕阳,刘晓凤,刘卓齐,王璎,苏琦,王建波..基于还原焙烧-水浸法的废旧三元锂电池正极材料选择性提锂工艺研究[J].化工矿物与加工,2026,55(5):38-45,8.
