磷酸-谷胱甘肽体系浸出废旧三元锂离子电池正极材料中有价金属  

Extraction of Valuable Metals from Waste Ternary Lithium-ion Battery Cathode Materials Using Phospho-glutathione System

作　　者：丁思懿 黄魁 翟睿娇 李汝桂 毛珊瑾 李佳忆 董海丽 DING Siyi;HUANG Kui;ZHAI Ruijiao;LI Rugui;MAO Shanjin;LI Jiayi;DONG Haili(School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China;Key Laboratory of Environmental Protection(Guangxi University),Education Department of Guangxi Zhuang Autonomous Region,Nanning 530004,China)

机构地区：[1]广西大学资源环境与材料学院,南宁530004 [2]广西高校环境保护重点实验室,南宁530004

出　　处：《有色金属(中英文)》2025年第3期506-513,共8页Nonferrous Metals

基　　金：广西自然科学基金资助项目(2018GXNSFAA281261)。

摘　　要：采用磷酸-谷胱甘肽体系浸出废旧三元锂离子电池正极材料中的有价金属,探究磷酸浓度、谷胱甘肽浓度、浸出温度、固液比和浸出时间对锂、镍、钴和锰浸出率的影响。结果表明,在磷酸1 mol/L、谷胱甘肽0.03 mol/L、浸出温度55℃、固液比35 g/L、浸出时间60 min条件下,锂、镍、钴和锰的浸出率均达到98%以上。谷胱甘肽在反应过程中起到了降低金属价态和释放H+促进浸出的作用。采用收缩未反应核模型对各金属浸出率做动力学拟合,由阿伦尼乌斯方程计算出锂、镍、钴和锰的表观活化能在37~42 kJ/mol,说明浸出过程受化学反应控制。The phospho-glutathione system was used to study how phosphate and glutathione concentrations,leaching temperature,solid-liquid ratio,and leaching time affect the extraction of lithium,nickel,cobalt,and manganese from discarded ternary lithium-ion battery cathodes.The results show that under the conditions of 1 mol/L phosphate,0.03 mol/L glutathione,55℃leaching temperature,35 g/L solid-liquid ratio and 60 min leaching time,the leaching rates of lithium,nickel,cobalt and manganese are above 98%.Glutathione play a role in reducing metal valence and releasing H+to promote leaching during the reaction.The apparent activation energies of lithium,nickel,cobalt and manganese are calculated in the range of 37~42 kJ/mol by Arrhenius equation,indicating that the leaching process is controlled by chemical reaction.

关 键 词：废旧锂离子电池 磷酸 谷胱甘肽 浸出动力学 

分 类 号：TF803.2[冶金工程—有色金属冶金]