US 12,278,352 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. 26, 2023, as Appl. No. 18/474,362.
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 18/474,362 is a continuation of application No. 17/020,333, filed on Sep. 14, 2020, granted, now 11,791,505.
Application 17/020,333 is a continuation of application No. 15/671,857, filed on Aug. 8, 2017, granted, now 10,777,858, issued on Sep. 15, 2020.
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 2024/0021905 A1, Jan. 18, 2024
Int. Cl. H01M 10/54 (2006.01); B01J 6/00 (2006.01); B01J 8/00 (2006.01); B01J 19/06 (2006.01); B01J 19/24 (2006.01); C22B 3/00 (2006.01); C22B 3/02 (2006.01); C22B 3/04 (2006.01); C22B 7/00 (2006.01); H01M 6/52 (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 recycled lead-acid battery made by a process comprising:
processing a spent lead-acid battery to generate a lead-bearing material;
forming a mixture containing 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;
adding a hydride to the mixture to generate a vented impurity gas;
treating the lead salt precipitate with a calcination method producing a leady oxide; and
forming a new lead-acid battery using the leady oxide formed from the method.