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使用过的LiFePO₄电池的回收利用:用于电池级FePO₄生产的综合工艺

Jiawei Du¹, Jialin Qing¹, Guiqing Zhang¹

¹School of Metallurgy and Environment, Central South University, Changsha 410083, China; Key Laboratory of Metallurgical Separation and Engineering, China Nonferrous Metals Industry, Changsha 410083, China.

Waste management (New York, N.Y.)

|January 8, 2026

概括

本研究介绍了一种用于回收使用的铁酸盐 (LiFePO4) 电池的综合工艺,实现了Li,Fe和P的高回收率.该方法确保了完全的元素回收,适合工业应用.

科学领域:

材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.
环境科学环境科学

背景情况:

使用过的LiFePO4电池带来了重大回收挑战.
有效地回收有价值的元素,如 (Li),铁 (Fe) 和 (P) 对于可持续性至关重要.
现有的方法经常因元素的深度分离和资源的全面利用而扎.

研究的目的:

开发一个综合有效的回收使用过的LiFePO4电池的流程.
为了实现高回收率的Li,Fe和P,同时确保深层分离杂质.
为了证明拟议的回收方法的工业可扩展性.

主要方法:

性压力浸用于选择性提取和Fe-Al分离.
硫酸浸用于P和Fe的回收,将Ca转化为CaSO4·2H2O.
三聚酸 (TBP) 和Lix984提取用于F和Cu的去除.
过氧化 (H2O2) 氧化和结晶,用于电池级FePO4生产.

主要成果:

选择性提取和深度Fe-Al分离通过性压力液实现.
高提取效率:99.2%的P和94.8%的Fe使用H2SO4水.
>99%的F和Cu被去除,在精炼中度<2 mg/L.
通过氧化和结晶生产电池级FePO4.
整体回收效率:97.88%的,92.91%的铁,和95.49%的.

结论:

综合工艺使使用过的LiFePO4电池能够全面回收元素.
该方法有效地分离杂质,并产生高纯度的电池材料.
该工艺显示出在电池回收中工业规模应用的巨大潜力.

关键词:

高纯度的FePO ((4)) 是一个洗残留物处理处理的洗残留物处理方法回收回收是回收的过程.溶剂提取提取溶剂提取使用过的LiFePO(4) 电池.

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