US 11,791,505 B2
Methods for purifying and recycling lead from spent lead-acid batteries
Matthew A. Spence, Lindenhurst, IL (US)
Assigned to CPS Technology Holdings LLC, New York, NY (US)
Filed by CPS Technology Holdings LLC, New York, NY (US)
Filed on Sep. 14, 2020, as Appl. No. 17/20,333.
Application 15/671,857 is a division of application No. 14/498,748, filed on Sep. 26, 2014, granted, now 9,751,067, issued on Sep. 5, 2017.
Application 17/020,333 is a continuation of application No. 15/671,857, filed on Aug. 8, 2017, granted, now 10,777,858.
Claims priority of provisional application 62/015,058, filed on Jun. 20, 2014.
Claims priority of provisional application 62/015,042, filed on Jun. 20, 2014.
Claims priority of provisional application 62/015,045, filed on Jun. 20, 2014.
Claims priority of provisional application 62/015,070, filed on Jun. 20, 2014.
Prior Publication US 2020/0411921 A1, Dec. 31, 2020
Int. Cl. H01M 10/54 (2006.01); B01J 8/00 (2006.01); B01J 6/00 (2006.01); C22B 3/00 (2006.01); C22B 7/00 (2006.01); H01M 6/52 (2006.01); C22B 3/02 (2006.01); C22B 3/04 (2006.01); B01J 19/06 (2006.01); B01J 19/24 (2006.01)
CPC H01M 10/54 (2013.01) [B01J 6/001 (2013.01); B01J 6/002 (2013.01); B01J 8/008 (2013.01); B01J 19/06 (2013.01); B01J 19/2465 (2013.01); C22B 3/02 (2013.01); C22B 3/04 (2013.01); C22B 7/006 (2013.01); C22B 7/007 (2013.01); C22B 7/009 (2013.01); C22B 13/04 (2013.01); C22B 13/045 (2013.01); H01M 6/52 (2013.01); B01J 2208/00805 (2013.01); Y02P 10/20 (2015.11); Y02W 30/84 (2015.05)] 20 Claims
OG exemplary drawing
 
1. A method of forming a new lead-acid battery from recycling of a lead-acid battery comprising:
processing a spent lead-acid battery to generate a lead-bearing material;
forming a mixture comprising a carboxylate source and the lead-bearing material;
generating a lead salt precipitate in the mixture as the carboxylate source reacts with the lead-bearing material;
dissolving the lead salt precipitate;
isolating a liquid component of the mixture from one or more insoluble components of the mixture;
regenerating the lead salt precipitate;
isolating the regenerated lead salt precipitate from the liquid component of the mixture;
adding a hydride source to the liquid component;
treating the lead salt precipitate to yield a leady oxide;
forming a leady oxide active material with the leady oxide; and
forming a new lead-acid battery using the leady oxide active material.