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:
Dec. 07, 2021
Filed:
Jun. 19, 2019
Huazhong University of Science and Technology, Hubei, CN;
Jiakuan Yang, Hubei, CN;
Kang Liu, Hubei, CN;
Sha Liang, Hubei, CN;
Ye Chen, Hubei, CN;
Keke Xiao, Hubei, CN;
Junxiong Wang, Hubei, CN;
Wenhao Yu, Hubei, CN;
Mingyang Li, Hubei, CN;
Huijie Hou, Hubei, CN;
Jingping Hu, Hubei, CN;
Bingchuan Liu, Hubei, CN;
Huazhong University of Science and Technology, Hubei, CN;
Abstract
The disclosure discloses a method for recycling lead paste in a spent lead-acid battery, comprising: (1) pretreating lead paste in a spent lead-acid battery as a raw material under vacuum; mixing the pretreated lead paste with a chlorination reagent to obtain reactants; and heating the reactants under vacuum to carry out a chlorination volatilization reaction, so that lead element in the pretreated lead paste is combined with chlorine element in the chlorination reagent to form lead chloride, which is then volatilized, and after the reaction is completed, chlorination residue and a crude lead chloride product are obtained by condensation and crystallization after volatilization; (2) purifying the crude lead chloride product obtained in the step (1) under vacuum to obtain a refined lead chloride product. The disclosure improves the overall process flow of the recycling method as well as parameter conditions of the respective steps thereof, and can effectively solve the problem of serious pollution in lead paste recycling in the prior art.