US 12,327,848 B1
Process and device for recycling waste lithium battery materials
Zhi Sun, Beijing (CN); Fei Kang, Beijing (CN); Yujuan Zhao, Beijing (CN); Dingshan Ruan, Beijing (CN); Dangwen Zhang, Beijing (CN); Wenyi Yan, Beijing (CN); and Tianya Wang, Beijing (CN)
Assigned to Institute of Process Engineering, Chinese Academy of Sciences, Beijing (CN); and Beijing Zhongke Brunp Recycling Technology Innovation Co., LTD, Beijing (CN)
Filed by Institute of Process Engineering, Chinese Academy of Sciences, Beijing (CN); and Beijing Zhongke Brunp Recycling Technology Innovation Co., LTD, Beijing (CN)
Filed on Oct. 28, 2024, as Appl. No. 18/928,239.
Claims priority of application No. 202410524536.7 (CN), filed on Apr. 29, 2024.
Int. Cl. H01M 10/00 (2006.01); B09B 3/35 (2022.01); H01M 10/54 (2006.01); B09B 101/16 (2022.01)
CPC H01M 10/54 (2013.01) [B09B 3/35 (2022.01); B09B 2101/16 (2022.01)] 7 Claims
OG exemplary drawing
 
1. A process for recycling waste lithium battery materials, comprising:
s10, charging
transporting composite pole pieces to a flexible de-powdering device through a uniform feeder, wherein the composite pole pieces are shredded by a shredder;
s20, flexibly removing powder
rubbing and beating the composite pole pieces using the flexible de-powdering device, after flexible depowdering, discharging a part of composite current collectors from a closed air spiral discharge pipe connecting to the flexible de-powdering device;
s30, centrally receiving materials
transporting falling electrode powder and remaining composite current collectors to a cyclone collector through negative pressure pipelines, centrally collecting dust produced in a process of uniform feeding and closed air spiral discharge; wherein a wind riddle is arranged at a lower end of the flexible de-powdering device and is connected to the negative pressure pipelines to discharge weights doped in the composite pole pieces; and
s40, screening
screening and separating the materials collected by the cyclone collector using a vibrating screen, and separating the remaining composite current collectors and the falling electrode powder;
wherein, a device for recycling the waste lithium battery materials is configured to achieve the process for recycling the waste lithium battery materials, and the device for recycling the waste lithium battery materials comprises:
the flexible de-powdering device, wherein an upper end of the flexible de-powdering device is provided with negative pressure powder collection ports, a discharge port of the flexible de-powdering device is provided with a closed air discharge screw machine, and an upper end of the closed air discharge screw machine is provided with a dust outlet;
the uniform feeder, wherein the uniform feeder is located at the upper end of the flexible de-powdering device and is connected to the flexible de-powdering device to uniformly feed the composite pole pieces into the flexible de-powdering device for powder removal; and an upper end of the uniform feeder is provided with a dust exhaust port;
the cyclone collector, wherein an inlet of the cyclone collector is connected to the negative pressure pipelines, and the negative pressure pipelines are connected to the dust exhaust port, the dust outlet, and the negative pressure powder collection ports, respectively; and
the wind riddle, wherein the wind riddle is arranged at the lower end of the flexible de-powdering device; and an outlet of the wind riddle is connected to the negative pressure pipelines;
wherein a discharge port of the cyclone collector is connected to the vibrating screen, and the vibrating screen separates the remaining composite current collectors output by the closed air discharge screw machine from the falling electrode powder.