球磨辅助柠檬酸-过氧化氢体系浸出废旧锂电池中有价金属研究  

Ball Milling-Assisted Leaching of Valuable Metals from Spent Lithium Batteries in Citric Acid and Hydrogen Peroxide System

作　　者：王红亮 陈燕彬 玉日泉[2] 周梦轩 谷姝甜 席莉[1] WANG Hongliang;CHEN Yanbin;YU Riquan;ZHOU Mengxuan;GU Shutian;XI Li(Hunan Nonferrous Metals Vocational and Technical College,Zhuzhou 412006,Hunan,China;Central South University,Changsha 410083,Hunan,China)

机构地区：[1]湖南有色金属职业技术学院,湖南株洲412006 [2]中南大学,湖南长沙410083

出　　处：《矿冶工程》2024年第4期132-135,共4页Mining and Metallurgical Engineering

基　　金：湖南有色金属职业技术学院校级重点课题(ZY23Z003);2021年度湖南省普通高校青年骨干教师培养对象遴选立项(湘教通[2022]46号)。

摘　　要：采用球磨辅助柠檬酸-过氧化氢体系浸出废旧锂电池正极材料中有价金属,结果表明:球磨对反应液体施加机械能,诱导其结构及物理化学性质发生变化,诱发化学反应,提高反应速率,缩短浸出时间;在浸出时间30 min、浸出温度60℃、柠檬酸浓度0.8 mol/L、H_(2)O_(2)质量分数20%、液固比6∶1、球磨机转速60 r/min条件下,锂浸出率99.6%、镍浸出率99.5%、钴浸出率99.3%、锰浸出率98.5%。该方法成本低、效率高,可为废旧锂电池回收提供一定参考。Ball milling was adopted to assist leaching of valuable metals from the cathode powder of spent batteries in citric acid and hydrogen peroxide system.It is found that ball milling can exert mechanical energy on the reaction solution,leading to changes in its structure and physical and chemical properties.As a result,chemical reactions can occur,which not only increases reaction rate,but also shortens leaching time.It is shown that after 30 min leaching at 60℃,with citric acid concentration of 0.8 mol/L,H_(2)O_(2) at a mass fraction of 20%,liquid-solid ratio of 6∶1,and rotation speed of 60 r/min for a ball mill,the leaching rates of lithium,nickel,cobalt and manganese can reach 99.6%,99.5%,99.3%and 98.5%respectively.It is concluded that this processing technique,being characterized by low cost and high efficiency,can provide a certain reference for recycling of spent batteries.

关 键 词：机械活化 球磨 柠檬酸 湿法浸出 废旧锂电池 正极材料 锂 镍 钴 锰 

分 类 号：X705[环境科学与工程—环境工程]