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:
Jul. 25, 2023
Filed:
Jun. 12, 2020
Applicant:
Aqua Metals Inc., Reno, NV (US);
Inventors:
Samaresh Mohanta, Dublin, CA (US);
Joshua Hufford, McCarran, NV (US);
Assignee:
Aqua Metals Inc., McCarran, NV (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 1/18 (2006.01); C01G 21/06 (2006.01); C22B 1/00 (2006.01); C22B 1/11 (2006.01); C22B 3/00 (2006.01); H01M 10/54 (2006.01);
U.S. Cl.
CPC ...
C25C 1/18 (2013.01); C01G 21/06 (2013.01); C22B 1/005 (2013.01); C22B 1/11 (2013.01); C22B 13/045 (2013.01); H01M 10/54 (2013.01);
Abstract
Lead is recovered from lead paste of a lead acid battery in a continuous and electrochemical lead recovery process. In especially preferred aspects, lead paste is processed to remove residual sulfates, and the so treated lead paste is subjected to a thermal treatment step that removes residual moisture and reduces lead dioxide to lead oxide. Advantageously, such pretreatment will avoid lead dioxide accumulation and electrolyte dilution.