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:
Aug. 10, 2021
Filed:
Dec. 12, 2019
Nemaska Lithium Inc., Queébec, CA;
Jean-François Magnan, Neuville, CA;
Guy Bourassa, Québec, CA;
Nicolas Laroche, Pont-Rouge, CA;
Gary Pearse, Ottawa, CA;
Stephen Charles Mackie, Peterborough, CA;
Mykolas Gladkovas, Toronto, CA;
Peter Symons, Williamsville, NY (US);
J. David Genders, Elma, NY (US);
Geneviève Clayton, Pierrefonds, CA;
Pierre Bouchard, Notre-Dame-du-Mont-Carmel, CA;
NEMASKA LITHIUM INC., Québec, CA;
Abstract
The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.