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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.:

US 11142466 B1

PDFFull Text
Date of Patent:
Oct. 12, 2021

Filed:

Nov. 22, 2018

Processes for preparing hydroxides and oxides of various metals and derivatives thereof

Applicant:

Nemaska Lithium Inc., Québec, CA;

Inventors:

Guy Bourassa, Québec, CA;

Jean-François Magnan, Neuville, CA;

Nicolas Laroche, Pont-Rouge, CA;

Thomas Bibienne, Montréal, CA;

Mathieu Charbonneau, Montréal, CA;

Mickaël Dollé, Outremont, CA;

Assignee:

NEMASKA LITHIUM INC., Québec, CA;

Attorney:

Bereskin & Parr LLP/S.E.N.C.R.L., s.r.l.

Primary Examiner:

Richard M Rump

Int. Cl.
CPC ...
C01G 53/04 (2006.01); B01D 61/44 (2006.01); C01D 1/28 (2006.01); C01D 15/02 (2006.01); C01G 51/04 (2006.01); C01G 51/00 (2006.01); C01G 53/00 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01); H01M 10/54 (2006.01);
U.S. Cl.
CPC ...
C01G 53/04 (2013.01); B01D 61/445 (2013.01); C01D 1/28 (2013.01); C01D 15/02 (2013.01); C01G 51/04 (2013.01); C01G 51/50 (2013.01); C01G 53/006 (2013.01); C01G 53/50 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 10/54 (2013.01); B01D 2311/2642 (2013.01); B01D 2311/2673 (2013.01); C01P 2002/54 (2013.01); C01P 2002/72 (2013.01); C01P 2006/40 (2013.01);
Abstract

There are provided processes for preparing a metal hydroxide comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium and aluminum, the process comprising: reacting a metal sulfate comprising (i) at least one metal chosen from nickel and cobalt and optionally (ii) at least one metal chosen from manganese, lithium and aluminum with lithium hydroxide, sodium hydroxide and/or potassium hydroxide and optionally a chelating agent in order to obtain a solid comprising the metal hydroxide and a liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate; separating the liquid and the solid from one another to obtain the metal hydroxide; submitting the liquid comprising lithium sulfate, sodium sulfate and/or potassium sulfate to an electromembrane process for converting the lithium sulfate, sodium sulfate and/or potassium sulfate into lithium hydroxide, sodium hydroxide and/or potassium hydroxide respectively; reusing the sodium hydroxide obtained by the electromembrane process for reacting with the metal sulfate; and reusing the lithium hydroxide obtained by the electromembrane process for reacting with the metal sulfate and/or with the metal hydroxide.

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