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Carbon-Thermal Reduction—Acid Leaching Recovery Process of Retired Lithium Manganate Oxide Batteries
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Zhi YANG1, Jingwei LI1, Yinhe LIN2, Chen CHEN3, Dalong WANG1, Yingwei LU1, Wenming TANG1
Hydrometallurgy of China | 2025, 44(4) : 459 - 466
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Hydrometallurgy of China | 2025, 44(4): 459-466
• Experiment Research •
Carbon-Thermal Reduction—Acid Leaching Recovery Process of Retired Lithium Manganate Oxide Batteries
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Zhi YANG1, Jingwei LI1, Yinhe LIN2, Chen CHEN3, Dalong WANG1, Yingwei LU1, Wenming TANG1
Affiliations
  • 1 Engineering Research Center of High Performance Copper Alloy Materials and Forming Processing & School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China
  • 2 Liangshan Xinyi Carbon Neutral Research Institute,Xichang 615000,China
  • 3 School of Mechanical Engineering,Tongling University,Tongling 244061,China
Published: 2025-08-20 doi: 10.13355/j.cnki.sfyj.2025.04.004
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The recovery of valuable components manganese and lithium from retired lithium manganese oxide batteries by carbon-thermal reduction—acid leaching combined recovery process was studied.The mixed powder of lithium manganese oxide and graphite was roasted by carbon thermal reduction,and the roasted products were characterized by XRD,XRF,SEM,TG-DTA and other technologies.The results show that the best effect is achieved by roasting at 650 ℃ for 180 min,and the lithium manganese oxide in the roasted product is completely converted into manganese monoxide and lithium carbonate.The lithium carbonate in the sample powder can be extracted by water leaching,and the leaching rate of lithium carbonate is 86.15%.Manganese ions are extracted by acid leaching of sulfuric acid.Under the acid leaching conditions of acid leaching concentration of 3.5 mol/L,acid leaching temperature of 60 ℃,acid leaching time of 3 h,and liquid volume to solid mass ratio of 8/1,the highest leaching rate of manganese ions is 88%.The method can achieve the purpose of synchronous and efficient recovery of manganese and lithium from cathode materials,and has certain application value.

retired lithium manganese oxide batteries  /  carbon-thermal reduction  /  acid  /  leaching  /  recovery  /  manganese  /  lithium
Zhi YANG, Jingwei LI, Yinhe LIN, Chen CHEN, Dalong WANG, Yingwei LU, Wenming TANG. Carbon-Thermal Reduction—Acid Leaching Recovery Process of Retired Lithium Manganate Oxide Batteries[J]. Hydrometallurgy of China, 2025 , 44 (4) : 459 -466 . DOI: 10.13355/j.cnki.sfyj.2025.04.004
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Year 2025 volume 44 Issue 4
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doi: 10.13355/j.cnki.sfyj.2025.04.004
  • Receive Date：2025-03-21
  • Online Date：2025-09-09
  • Published：2025-08-20
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  • Received：2025-03-21
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Affiliations
    1 Engineering Research Center of High Performance Copper Alloy Materials and Forming Processing & School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China
    2 Liangshan Xinyi Carbon Neutral Research Institute,Xichang 615000,China
    3 School of Mechanical Engineering,Tongling University,Tongling 244061,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
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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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