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:
Jun. 25, 2024
Filed:
Jan. 29, 2019
Applicant:
Dusenfeld Gmbh, Wendeburg, DE;
Inventors:
Christian Hanisch, Braunschweig, DE;
Tobias Elwert, Clausthal-Zellerfeld, DE;
Lisa Brückner, Clausthal-Zellerfeld, DE;
Assignee:
DUSENFELD GMBH, Wendeburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22B 7/00 (2006.01); C22B 1/00 (2006.01); C22B 3/00 (2006.01); C22B 3/08 (2006.01); C22B 3/26 (2006.01); C22B 21/00 (2006.01); C22B 26/12 (2006.01); C22B 47/00 (2006.01); H01M 10/54 (2006.01);
U.S. Cl.
CPC ...
C22B 7/007 (2013.01); C22B 1/005 (2013.01); C22B 3/08 (2013.01); C22B 3/26 (2021.05); C22B 21/0023 (2013.01); C22B 23/0407 (2013.01); C22B 23/0453 (2013.01); C22B 26/12 (2013.01); C22B 47/0045 (2013.01); H01M 10/54 (2013.01); Y02P 10/20 (2015.11); Y02W 30/84 (2015.05);
Abstract
The invention relates to a method for recycling used lithium batteries containing the steps: (a) digestion of comminuted material (), which contains comminuted components of electrodes of lithium batteries, using concentrated sulphuric acid () at a digestion temperature (T) of at least 100° C., in particular at least 140° C., so that waste gas () and a digestion material () are produced, (b) discharge of the waste gas () and (c) wet chemical extraction of at least one metallic component of the digestion material ().