摘要
国家“双碳”战略的实施需要绿色创新技术的支持。综合运用元素分析、ICP-OES等方法分析退役三元锂电池中黑粉的成分;通过吉布斯自由能和饱和蒸气压分析,论证了真空碳还原法回收Li和去除Al的可行性。真空碳还原试验结果表明,在550℃可以回收98.17%的Li,在850℃可去除98.21%的Al;通过氧化焙烧方式,在750℃可去除100%的C,最终得到三元前驱体。
The implementation of the national“dual carbon”strategy requires support of green innovation technologies.CHNS elemental analyzer,ICP-OES and other methods were used to analyze composition of black powder in scrap ternary Li-ion batteries.Through Gibbs free energy and saturated vapor pressure analysis,it is demonstrated that the feasibility of Li recovery and removal of Al by vacuum carbon reduction method.The results of vacuum carbon reduction experiments show that 98.17%of Li can be recovered at 550℃,98.21%of Al can be removed at 850℃.By oxidative roasting,100%of C can be removed at 750℃,then the ternary precursor can be finally obtained.
作者
蔡乐涛
顾卫华
马恩
CAI Le-tao;GU Wei-hua;MA En(School of Resources and Environmental Engineering,Shanghai Polytechnic University,Shanghai 201209,China;No.4 Middle School Affiliated to ECNU,Shanghai 200062,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2022年第9期43-48,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
国家重点研发计划项目(2019YFC1904400)。
关键词
退役三元锂电池
真空冶金
氧化焙烧
绿色短流程
前驱体
scrap ternary li-ion batteries
vacuum metallurgy
oxidative roasting
green short-process
precursor
