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Selective Dissociation and Efficient Separation of Cathode Material of Spent Lithium-ion Batteries
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Fei KANG1, 2, Tianya WANG1, 2, Yujuan ZHAO2, 3, Yongquan PU4, Mingming HE2, Zhi SUN1, 2
Mining and Metallurgical Engineering | 2023, 43(1) : 123 - 128
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Mining and Metallurgical Engineering | 2023, 43(1): 123-128
• MATERIALS •
Selective Dissociation and Efficient Separation of Cathode Material of Spent Lithium-ion Batteries
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Fei KANG1, 2, Tianya WANG1, 2, Yujuan ZHAO2, 3, Yongquan PU4, Mingming HE2, Zhi SUN1, 2
Affiliations
  • 1.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
  • 2.Institute of Process Engineering of Chinese Academy of Sciences, Beijing 100190, China
  • 3.School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 4.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
Published: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.027
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A technique combining mechanical force and heating effect was adopted to selectively disassociate cathode material from spent lithium-ion batteries and roll the aluminum foil by adjusting processing parameters. The results show that a better disassociation effect can be obtained with the frequency of electric motor, air circulation fan and dissociation device at 40 Hz, 40 Hz and 50 Hz, respectively. The aluminum foil with particle size of -1.7+0.075 mm is rolled to be spherical, and the cathode materials with particle size of -0.075+0.048 mm and -0.048 mm are rough on the surface and wrapped by organic binder. The final dissociation rate of cathode sheet can be up to 96.35%, and the cathode material can be recovered at a rate of 94.95% by single operation, with the content of Al impurity less than 0.15%. It is shown that this selective dissociation technique based on a combination of mechanic force and heating effect can actualize an efficient separation and sorting of cathode sheet, not only shortening the battery disposal process flow but also achieving efficient metal enrichment.

recycling of spent batteries  /  lithium iron phosphate  /  cathode sheet  /  aluminum foil  /  selective dissociation  /  efficient sorting  /  short process flow
Fei KANG, Tianya WANG, Yujuan ZHAO, Yongquan PU, Mingming HE, Zhi SUN. Selective Dissociation and Efficient Separation of Cathode Material of Spent Lithium-ion Batteries[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 123 -128 . DOI: 10.3969/j.issn.0253-6099.2023.01.027
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doi: 10.3969/j.issn.0253-6099.2023.01.027
  • Receive Date：2022-08-24
  • Online Date：2026-03-05
  • Published：2023-02-01
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  • Received：2022-08-24
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Affiliations
    1.School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    2.Institute of Process Engineering of Chinese Academy of Sciences, Beijing 100190, China
    3.School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
    4.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, 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
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Percentage of total
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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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