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:
May. 22, 2023
American Hyperform, Inc., Philadelphia, PA (US);
William Novis Smith, Philadelphia, PA (US);
American Hyperform, Inc., Philadelphia, PA (US);
Abstract
A flotation method for separating cathode material from anode and other carbon materials is described. The cathode material may be that including lithium, nickel, and cobalt or that including lithium iron phosphate. The starting material for the flotation process is conventional black mass as recovered from fractured lithium-ion batteries and lithium-ion battery production scrap. The fractured lithium-ion batteries may originate from spent batteries including used batteries and/or out of specification new production batteries. A very fine mesh screening preferably is used to remove interfering binder from the black mass powder prior to froth flotation, preferably in combination with a hydrophilic depressant to enhance separation of the cathode material from the anode and other carbon materials present in the black mass. The separated cathode and anode materials recovered from the method may be used directly or augmented with additional lithium to form new LIB cathodes, anodes, and batteries.