Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process
The improper disposal of retired lithium batteries will cause environmental pollution and a waste of resources. In this study, a waste lithium iron phosphate battery was used as a raw material, and cathode and metal materials in the battery were separated and recovered by mechanical crushing and ele...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Separations |
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| Online Access: | https://www.mdpi.com/2297-8739/10/3/220 |
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| author | Huabing Zhu Yuxuan Bai Lei Zu Haijun Bi Jian Wen |
| author_facet | Huabing Zhu Yuxuan Bai Lei Zu Haijun Bi Jian Wen |
| author_sort | Huabing Zhu |
| collection | DOAJ |
| description | The improper disposal of retired lithium batteries will cause environmental pollution and a waste of resources. In this study, a waste lithium iron phosphate battery was used as a raw material, and cathode and metal materials in the battery were separated and recovered by mechanical crushing and electrostatic separation technology. The effects on material electrostatic separation of separation parameters such as the crushing particle size, the voltage of the static electrode, and the rotating speed of the grounding rotor were all studied combined with trajectory simulation and separation experiments. The results show that the crushing particle size of the material has the most significant impact on the separation effect, and the material separation effect primarily occurs in the range of 0.2–2.0 mm particle sizes. When the voltage of the static electrode is 30 kV, the rotating speed of the grounded rotor is 60 r/min, and the particle size is 0.4–0.8 mm, and the recovery rates for aluminum, copper, and lithium iron phosphate reach 93.2%, 91.1%, and 97.1%, respectively. In the recovery process for waste lithium batteries, using electrostatic separation technology instead of high-temperature roasting or chemical leaching can effectively improve the separation efficiency and reduce secondary pollution. |
| first_indexed | 2024-03-11T05:55:32Z |
| format | Article |
| id | doaj.art-a0c74fc6f5fe439d989ab6652ad95d91 |
| institution | Directory Open Access Journal |
| issn | 2297-8739 |
| language | English |
| last_indexed | 2024-03-11T05:55:32Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Separations |
| spelling | doaj.art-a0c74fc6f5fe439d989ab6652ad95d912023-11-17T13:50:43ZengMDPI AGSeparations2297-87392023-03-0110322010.3390/separations10030220Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic ProcessHuabing Zhu0Yuxuan Bai1Lei Zu2Haijun Bi3Jian Wen4School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Mechanical Engineering, Hefei University of Technology, Hefei 230009, ChinaSchool of Mechanical Engineering, Hefei University of Technology, Hefei 230009, ChinaState Key Laboratory of Tea Plant Biology and Utilization, School of Tea and Food Science & Technology, Anhui Agricultural University, Hefei 230036, ChinaSchool of Mechanical Engineering, Hefei University of Technology, Hefei 230009, ChinaThe improper disposal of retired lithium batteries will cause environmental pollution and a waste of resources. In this study, a waste lithium iron phosphate battery was used as a raw material, and cathode and metal materials in the battery were separated and recovered by mechanical crushing and electrostatic separation technology. The effects on material electrostatic separation of separation parameters such as the crushing particle size, the voltage of the static electrode, and the rotating speed of the grounding rotor were all studied combined with trajectory simulation and separation experiments. The results show that the crushing particle size of the material has the most significant impact on the separation effect, and the material separation effect primarily occurs in the range of 0.2–2.0 mm particle sizes. When the voltage of the static electrode is 30 kV, the rotating speed of the grounded rotor is 60 r/min, and the particle size is 0.4–0.8 mm, and the recovery rates for aluminum, copper, and lithium iron phosphate reach 93.2%, 91.1%, and 97.1%, respectively. In the recovery process for waste lithium batteries, using electrostatic separation technology instead of high-temperature roasting or chemical leaching can effectively improve the separation efficiency and reduce secondary pollution.https://www.mdpi.com/2297-8739/10/3/220electrostatic sortingspent lithium iron phosphate batteryparticle size rangecathode material recovery |
| spellingShingle | Huabing Zhu Yuxuan Bai Lei Zu Haijun Bi Jian Wen Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process Separations electrostatic sorting spent lithium iron phosphate battery particle size range cathode material recovery |
| title | Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process |
| title_full | Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process |
| title_fullStr | Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process |
| title_full_unstemmed | Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process |
| title_short | Separation of Metal and Cathode Materials from Waste Lithium Iron Phosphate Battery by Electrostatic Process |
| title_sort | separation of metal and cathode materials from waste lithium iron phosphate battery by electrostatic process |
| topic | electrostatic sorting spent lithium iron phosphate battery particle size range cathode material recovery |
| url | https://www.mdpi.com/2297-8739/10/3/220 |
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