微波辅助回收废旧三元锂电池中的有价金属  

Microwave Assisted Recovery of Valuable Metals from Waste Ternary Lithium Batteries

作　　者：白雪莲 邓文叶 刘育育 薛燕 赵鹏君[3] 常爱民[3] 谢永新[3] BAI Xuelian;DENG Wenye;LIU Yuyu;XUE Yan;ZHAO Pengjun;CHANG Aimin;XIE Yongxin(College of Resources and Environment,Xinjiang Agricultural University,Urumqi 830052,China;School of Chemical and Environmental Engineering,Xinjiang Engineering College,Urumqi 830091,China;Key Laboratory of Electronic Information Materials and Devices,Xinjiang Institute of Physical and Chemical Technology,Chinese Academy of Sciences,Urumqi 830011,China)

机构地区：[1]新疆农业大学资源与环境学院,乌鲁木齐830052 [2]新疆工程学院化学与环境工程学院,乌鲁木齐830091 [3]中国科学院新疆理化技术研究所电子信息材料与器件重点实验室,乌鲁木齐830011

出　　处：《有色金属工程》2023年第9期79-83,共5页Nonferrous Metals Engineering

基　　金：新疆“天山英才”培养计划项目(2022TSYCCX0009);新疆维吾尔自治区重点研发计划项目(2021B01001-4)。

摘　　要：以抗坏血酸和葡萄糖酸混合酸为浸出体系,辅以微波加热技术从废旧三元锂电池正极材料中浸出有价金属。采用N-N,二甲基吡咯烷酮(NMP)对废旧三元锂电池正极材料进行预处理。单因素试验确定的最佳条件为:微波温度90℃、微波反应时间6 min、抗坏血酸浓度0.5 mol/L、葡萄糖酸浓度1 mol/L、固液比20 g/L,获得对应Mn、Co、Ni、Li的浸出率分别是99.5%、98.7%、99.7%、97.8%。与传统浸出法相比较,微波辅助浸出效率更高。Using mixed acid ascorbic acid and gluconic acid as the leaching system,supplemented with microwave heating technology to leach valuable metals from used ternary lithium battery cathode materials.N-N,dimethylpyrrolidone(NMP)was used to pretreat the used ternary lithium battery cathode material.The optimum conditions were determined by a single-factor test to be a microwave temperature of 90℃,a microwave reaction time of 6 min,an ascorbic acid concentration of 0.5 mol/L,a gluconic acid concentration of 1 mol/L and a solid-liquid ratio of 20 g/L.The optimum leaching rates for Mn,Co,Ni and Li were obtained as follows 99.5%,98.7%,99.7%and 97.8%,respectively,and the solid residues after leaching were characterized via XRD,SEM and XPS for the anode materials and different conditions.Higher efficiency of microwave assisted leaching compared to traditional leaching methods.

关 键 词：废旧三元锂电池 有价金属 微波加热技术 混合酸 浸出率 

分 类 号：TF80[冶金工程—有色金属冶金]