The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 09, 2024
Filed:
May. 12, 2021
Hunan Brunp Recycling Technology Co., Ltd., Changsha, CN;
Guangdong Brunp Recycling Technology Co., Ltd., Foshan, CN;
Hunan Brunp Ev Recycling Co., Ltd., Changsha, CN;
Haibing Cai, Changsha, CN;
Qiang Li, Changsha, CN;
Changdong Li, Changsha, CN;
Ruokui Chen, Changsha, CN;
Song Chen, Changsha, CN;
HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD., Changsha, CN;
GUANGDONG BRUNP RECYCLING TECHNOLOGY CO., LTD., Foshan, CN;
HUNAN BRUNP EV REYCLING CO., LTD., Changsha, CN;
Abstract
The present invention relates to the field of waste battery recycling, and discloses a method for treating waste diaphragm paper of a lithium battery, which includes the following steps of: (1) shearing and crushing waste diaphragm paper, and then carrying out pneumatic separation to obtain a light material and a copper-aluminum mixture; (2) putting the light material into a flotation machine for separation to obtain diaphragm paper and battery powder; and (3) pulping the battery powder, and then carrying out leaching of hydrometallurgy, pickling the diaphragm paper, and then filtering and spin-drying to obtain the diaphragm paper. According to the method, the diaphragm paper is treated by a method combining physics and chemistry, so that valuable metals in the waste diaphragm paper of the lithium battery are effectively recycled, and the industrial production requirements of environmental friendliness, low energy consumption and high resource recycling are satisfied.