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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.:

US 9828654 B1

PDFFull Text
Date of Patent:
Nov. 28, 2017

Filed:

May. 27, 2014

Method for directly recovering lead oxide used for a lead-acid battery cathode from waste lead paste

Applicants:

Chilwee Power Co. Ltd., Zhicheng, Changxing, CN;

Beijing University of Chemical Technology, ChaoYang District, Beijing, CN;

Inventors:

Junqing Pan, Changxing, CN;

Yongquan Ma, Changxing, CN;

Yanzhi Sun, Changxing, CN;

Xiaoxiang Cai, Changxing, CN;

Yinjian Niu, Changxing, CN;

Xiaowei Liu, Changxing, CN;

Shuang Song, Changxing, CN;

Tixian Chen, Changxing, CN;

Guoqing Cao, Changxing, CN;

Mingming Zhou, Changxing, CN;

Xinxin Yang, Changxing, CN;

Longrui Zhou, Changxing, CN;

Yunfei Yang, Changxing, CN;

Assignee:

CHILWEE POWER CO. LTD & BEIJING UNIVERSITY OF CHEMICAL TECHNOLOGY, , CN;

Attorney:

Maine Cernota & Rardin

Primary Examiner:

Steven Bos

Int. Cl.
CPC ...
C22B 13/00 (2006.01); C22B 3/00 (2006.01); H01M 10/54 (2006.01); C22B 7/00 (2006.01);
U.S. Cl.
CPC ...
C22B 13/045 (2013.01); C22B 7/006 (2013.01); H01M 10/54 (2013.01); Y02P 10/234 (2015.11); Y02W 30/84 (2015.05);
Abstract

Provided is a method for directly recovering lead oxide used for a lead-acid battery negative electrode from waste lead paste. The method comprises: (1) contacting waste lead paste with a barium-containing desulphurizer under desulphurization reaction conditions, and performing a solid-liquid separation on the mixture after contacting to obtain a filtrate and a filtration residue; and (2) performing a conversion reaction on the above-mentioned filtration residue at a temperature of 350-750° C. so as to convert the lead-containing components in the filtration residue into lead oxide. In the method, the direct recovery of a lead oxide raw material applicable to a lead-acid battery negative electrode from waste lead paste is achieved by quantitatively replenishing a barium sulphate additive in the process of desulphuration thereby substantially decreasing the recovery cost and energy consumption, and improving the comprehensive utilization of waste lead paste.

Find Patent Forward Citations

Pan, Junqing. (2017). Method for directly recovering lead oxide used for a lead-acid battery cathode from waste lead paste (U.S. Patent No. 9828654). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9828654

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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