Invention Grant
- Patent Title: Method for recycling positive plate of lithium-ion battery
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Application No.: US17337730Application Date: 2021-06-03
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Publication No.: US11646460B2Publication Date: 2023-05-09
- Inventor: Yuancheng Cao , Weixin Zhang , Shun Tang , Yuzhen Zhao , Shouding Li
- Applicant: Huazhong University of Science and Technology , Wuhan Rikomay New Energy Co., Ltd.
- Applicant Address: CN Hubei
- Assignee: Wuhan Rikomay New Energy Co., Ltd.
- Current Assignee: Wuhan Rikomay New Energy Co., Ltd.
- Current Assignee Address: CN Wuhan
- Priority: CN 2011001909.0 2020.09.22
- Main IPC: H01M4/00
- IPC: H01M4/00 ; H01M10/54 ; H01M4/58

Abstract:
A method for recycling a lithium iron phosphate positive plate with low energy consumption and low Al content, including: crushing a lithium iron phosphate positive plate to be recycled into a granular material with a particle size of 1-15 mm by using a crusher; heating the granular material obtained in step (1) to 350-500° C. in an atmosphere furnace in an inert atmosphere; and keeping the granular material at 350-500° C. for 0.5-2 h followed by cooling to a preset temperature to obtain a calcined product; grinding the calcined product obtained in step (2) by using a grinder to obtain a ground product with D50 larger than or equal to 50 μm; and classifying the ground product obtained in step (3) by using an air classifier to remove Al simple substance to obtain a recovered positive material with an Al content below 200 ppm.
Public/Granted literature
- US20210288359A1 METHOD FOR RECYCLING POSITIVE PLATE OF LITHIUM-ION BATTERY Public/Granted day:2021-09-16
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