首页|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

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

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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、H2O2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-Assisted Leaching of Valuable Metals from Spent Lithium Batteries in Citric Acid and Hydrogen Peroxide System
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,H2O2 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.

mechanical activationball millingcitric acidhydrometallurgical leachingspent lithium batterycathode materiallithiumnickelcobaltmanganese

王红亮、陈燕彬、玉日泉、周梦轩、谷姝甜、席莉

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湖南有色金属职业技术学院,湖南株洲 412006

中南大学,湖南长沙 410083

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

湖南有色金属职业技术学院校级重点课题2021年度湖南省普通高校青年骨干教师培养对象遴选立项

ZY23Z003湘教通[2022]46号

2024

10.3969/j.issn.0253-6099.2024.04.025

矿冶工程
长沙矿冶研究院有限责任公司 中国金属学会

矿冶工程

CSTPCD北大核心
影响因子：1.137
ISSN：0253-6099
年,卷(期)：2024.44(4)