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Progress in Iron-Aluminum Separation Technologies in Spent Lithium Iron Phosphate Battery Recycling
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Biyun LUO1, 2, Qunxuan YAN1, Qunying TAN1, Jiaxin CHEN1, Xiujiao HUANG1, Bin XU2
Mining and Metallurgical Engineering | 2026, 46(3) : 261 - 267
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Mining and Metallurgical Engineering | 2026, 46(3): 261-267
• MATERIALS •
Progress in Iron-Aluminum Separation Technologies in Spent Lithium Iron Phosphate Battery Recycling
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Biyun LUO1, 2, Qunxuan YAN1, Qunying TAN1, Jiaxin CHEN1, Xiujiao HUANG1, Bin XU2
Affiliations
  • 1.KeyKing Recycling Technology Co., Ltd., Hengyang 421800, Hunan, China
  • 2.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
doi: 10.3969/j.issn.0253-6099.2026.03.040
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Based on the existing removal routes of aluminum impurities during the recycling of spent lithium iron phosphate (LFP) batteries, the recycling process is divided into two major stages:removal of a large amount of aluminum via separation and sorting, and elimination of trace aluminum by hydrometallurgical process. This paper comprehensively reviews the advantages and disadvantages of various emerging technologies in terms of impurity removal efficiency, selectivity, residual aluminum content, economic performance and environmental impact. The future research trends are also prospected, for providing theoretical basis for the high-value utilization of spent LFP materials and green transformation of the industry.

lithium iron phosphate (LFP)  /  recycling  /  iron-aluminum separation  /  deep aluminum removal  /  resource recycling  /  spent battery  /  cathode material  /  impurity removal
罗碧云, 颜群轩, 谭群英, 陈嘉鑫, 黄秀娇, 徐斌. 退役磷酸铁锂电池回收中铁铝分离技术研究进展. 矿冶工程杂志, 2026 , 46 (3) : 261 -267 . DOI: 10.3969/j.issn.0253-6099.2026.03.040
Biyun LUO, Qunxuan YAN, Qunying TAN, Jiaxin CHEN, Xiujiao HUANG, Bin XU. Progress in Iron-Aluminum Separation Technologies in Spent Lithium Iron Phosphate Battery Recycling[J]. Mining and Metallurgical Engineering, 2026 , 46 (3) : 261 -267 . DOI: 10.3969/j.issn.0253-6099.2026.03.040
Appendix
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Year 2026 volume 46 Issue 3
137
35
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doi: 10.3969/j.issn.0253-6099.2026.03.040
  • Receive Date：2025-12-20
  • Online Date：2026-10-08
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  • Received：2025-12-20
Funding
Affiliations
    1.KeyKing Recycling Technology Co., Ltd., Hengyang 421800, Hunan, China
    2.School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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