文献类型：期刊文献

中文题名：混合废旧电池的柠檬酸浸出工艺

英文题名：Citric acid leaching process for mixed spent batteries

作者：罗文波 焦梅 周东波 龙潇

第一作者：罗文波

机构：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003

第一机构：贵州理工学院材料与能源工程学院

年份：2022

卷号：52

期号：5

起止页码：597-600

中文期刊名：电池

外文期刊名：Battery Bimonthly

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：贵州理工学院高层次人才科研启动项目(XJGC20190951)。

语种：中文

中文关键词：废旧电池;柠檬酸;浸出率;还原;锂离子电池;镍氢电池

外文关键词：spent battery;citric acid;leaching rate;reduction;Li-ion battery;nickel-metal hydride battery

摘要：为了更环保地提取废旧电池中的有价金属,以废旧锂离子电池的锰酸锂正极、钴酸锂正极和三元材料正极与废旧镍氢电池的正负极组成混合电极材料,研究以柠檬酸为浸出剂、双氧水(H_(2)O_(2))为还原剂,还原酸浸出混合电极材料。考察柠檬酸浓度、H_(2)O_(2)质量分数、浸出温度、浸出时间和液固比等因素对有价金属浸出率的影响。在柠檬酸浓度3 mol/L、浸出液H_(2)O_(2)质量分数3%、浸出温度80℃、浸出时间2 h及液固比10 ml∶1 g的优化工艺条件下,金属镍、钴、锰、锂和稀土(RE)的浸出率分别为93.53%、86.99%、95.62%、93.21%和82.34%,有价金属浸出率高,环境效益好。
In order to extract valuable metals from waste batteries more environmentally,a mixed electrode material was composed of lithium manganate cathode,lithium cobaltate cathode and ternary material cathode of spent Li-ion battery,cathode and anode electrodes of spent nickel-metal hydride battery.The reduction acid leaching of mixed electrode materials with citric acid as leaching agent and hydrogen peroxide(H_(2)O_(2))as reducing agent was studied.The effects of citric acid concentration,mass fraction of H_(2)O_(2),leaching temperature,leaching time and liquid-solid ratio on the leaching rate of valuable metals were investigated.Under the optimized process conditions of citric acid concentration of 3 mol/L,mass fraction of H_(2)O_(2) leaching solution of 3%,leaching temperature of 80℃,leaching time of 2 h and liquid-solid ratio of 10 ml∶1 g,the leaching rates of valuable metals nickel,cobalt,manganese,lithium and rare earth(RE)were 93.53%,86.99%,95.62%,93.21%and 82.34%,respectively.The leaching rates of valuable metals were high and environmental benefits were good.