江西理工大学战略有色金属绿色低碳冶金江西省重点实验室;江西睿达新能源科技有限公司;
研究了利用废旧磷酸铁锂(LFP)和钴酸锂(LCO)电池正极材料协同浸出锂,通过热力学分析了工艺可行性,考察了各因素对协同浸出的影响,并通过X射线衍射仪(XRD)、扫描电镜(SEM)对浸出渣进行了表征。结果表明:在不添加任何氧化剂或还原剂条件下,LFP与LCO能在酸性体系中协同浸出锂;在硫酸浓度0.7 mol/L、浸出温度40℃、浸出时间60 min、n(LCO)∶n(LFP)=0.5、液固体积质量比10 mL/1 g最佳浸出条件下,废旧电池正极材料中的Li、Co、Fe、P浸出率分别为99.99%、99.99%、48.00%、43.77%。该法可实现在低酸条件下从复杂电池正极材料中回收有价金属的目的,具有一定推广应用价值。
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基本信息:
DOI:10.13355/j.cnki.sfyj.2025.02.002
中图分类号:TF826.3;TM912
引用信息:
[1]卢人航,蒋春生,刘兰进等.废旧磷酸铁锂与钴酸锂正极材料协同提锂试验研究[J].湿法冶金,2025,44(02):143-150.DOI:10.13355/j.cnki.sfyj.2025.02.002.
基金信息:
国家自然科学基金资助项目(52464047); 江西省自然科学基金资助项目(20242BAB25250,20224BAB214040,20232BAB204036); 赣鄱俊才支持计划·青年科技人才托举项目(2024QT06)