Recovery of Lithium extracted Tailings from Lithium Iron Phosphate Battery W aste and Preparation of lron Phosphate AITranslate
Abstract AITranslate
Aiming at the recycling with high value of the lithium-extracted tailings from lithium iron phosphate battery waste,dissolution process conditions of the lithium-extracted tailings with hydrochloric acid were optimized and leaching kinetics was studied.The effects of hydrochloric acid concentration,solid-toliquid ratio and leaching time on the dissolution efficiency of the lithium-extracted tailings were mainly studied,and the leaching kinetics of the main component iron phosphate in hydrochloric acid solution was investigated.The results show that under the conditions of hydrochloric acid concentration 3 mol/L,liquidsolid volume-to-mass ratio 15 mL/g,reaction time 4 h and leaching temperature 30℃,the dissolution rate of lithium-extracted tailings reaches 92.4%.The leaching process of iron phosphate in hydrochloric acid conforms to the shrinking core model without a solid product layer,with an apparent activation energy of 25.45 kJ/mol,representing that the leaching process is controlled by internal diffusion.The iron phosphate powder was prepared by precipitation of the leaching solution.The XRD pattern of the product matches well with the standard pattern of iron phosphate,and its EDS pattern shows that P,Fe and O are evenly distributed.Therefore,the prepared powder is judged to be iron phosphate,its iron-phosphorus molar ratio is 0.97 and the content of other elements is scarce,which meets the industry standard of battery-grade iron phosphate and can be used in battery production.
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Basic Information:
DOI：
Chinese Library Classification Number:TF803.21[冶金工程—有色金属冶金]
Citation Information:
Aiming at the recycling with high value of the lithium-extracted tailings from lithium iron phosphate battery waste,dissolution process conditions of the lithium-extracted tailings with hydrochloric acid were optimized and leaching kinetics was studied.The effects of hydrochloric acid concentration,solid-toliquid ratio and leaching time on the dissolution efficiency of the lithium-extracted tailings were mainly studied,and the leaching kinetics of the main component iron phosphate in hydrochloric acid solution was investigated.The results show that under the conditions of hydrochloric acid concentration 3 mol/L,liquidsolid volume-to-mass ratio 15 mL/g,reaction time 4 h and leaching temperature 30℃,the dissolution rate of lithium-extracted tailings reaches 92.4%.The leaching process of iron phosphate in hydrochloric acid conforms to the shrinking core model without a solid product layer,with an apparent activation energy of 25.45 kJ/mol,representing that the leaching process is controlled by internal diffusion.The iron phosphate powder was prepared by precipitation of the leaching solution.The XRD pattern of the product matches well with the standard pattern of iron phosphate,and its EDS pattern shows that P,Fe and O are evenly distributed.Therefore,the prepared powder is judged to be iron phosphate,its iron-phosphorus molar ratio is 0.97 and the content of other elements is scarce,which meets the industry standard of battery-grade iron phosphate and can be used in battery production.
quote
| GB/T 7714-2015 | [1] LIU Qing-sheng, YU Xiu-yuan, XIAO Hao, et al. Recovery of Lithium extracted Tailings from Lithium Iron Phosphate Battery W aste and Preparation of lron Phosphate[J]. Rare Metals and Cemented Carbides, 2022(4): 17-23. |
| MLA | [1] LIU Qing-sheng, et al., "Recovery of Lithium extracted Tailings from Lithium Iron Phosphate Battery W aste and Preparation of lron Phosphate." Rare Metals and Cemented Carbides, no. 4, 2022, pp. 17-23. |
| APA | [1] LIU Qing-sheng, YU Xiu-yuan, XIAO Hao, LIU Jia-ming, & QIU Ting-sheng. (2022). Recovery of Lithium extracted Tailings from Lithium Iron Phosphate Battery W aste and Preparation of lron Phosphate. Rare Metals and Cemented Carbides(4), 17-23. |
| IEEE | [1] LIU Qing-sheng, YU Xiu-yuan, XIAO Hao, LIU Jia-ming, and QIU Ting-sheng, "Recovery of Lithium extracted Tailings from Lithium Iron Phosphate Battery W aste and Preparation of lron Phosphate," Rare Metals and Cemented Carbides, no. 4, pp. 17-23, 2022. keywords: {lithium iron phosphate battery waste;lithium-extracted tailing;leaching with hydrochloric acid;process condition optimization;kinetics;iron phosphate;recovery} |