首页|Crystallization of battery-grade lithium carbonate with high recovery rate via solid-liquid reaction

Crystallization of battery-grade lithium carbonate with high recovery rate via solid-liquid reaction

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Lithium carbonate(Li2CO3)stands as a pivotal raw material within the lithium-ion battery industry.Hereby,we propose a solid-liquid reaction crystallization method,employing powdered sodium car-bonate instead of its solution,which minimizes the water introduction and markedly elevates one-step lithium recovery rate.Through kinetic calculations,the Li2CO3 solid-liquid reaction crystallization pro-cess conforms by the Avrami equation rather than shrinking core model,which means the dissolution rate of Na2CO3 is the most important factor affecting the reaction process.The effects of reaction con-ditions such as temperature and stirring speed on the Li2CO3 precipitation behavior were evaluated.The results indicated that temperature is a most essential parameter than other reaction conditions or stir-ring speed.The exceptional 93%recovery of Li2CO3 at 90 ℃ with a remarkable purity of 99.5%was achieved by using 1.2 M ratio of Na2CO3/Li2SO4.This method provides a new idea for the efficient preparation of battery-grade Li2CO3.

Lithium recoveryLithium sulfateReaction crystallizationBattery-grade lithium carbonate

Chaofan Wu、Longjin Jiang、Wei Wang、Bin Dong、Zhidong Chang、Daixiang Wei、Hira Anwar、Minghui Zhang、Dekun Gao

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School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing,100083,China

Anhui Chaoyue Environmental Protection Technology Co.,Ltd,Chuzhou,239060,China

State Key Laboratory of Biochemical Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China

Anhui Huihong Technology Co.,Ltd,Chuzhou,239060,China

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Science and Technology Key Project of Anhui Province,China

2022e03020004

2024

颗粒学报(英文版)
中国颗粒学会 中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子:0.632
ISSN:1674-2001
年,卷(期):2024.92(9)