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. 04, 2019
Filed:
Mar. 14, 2019
Rocher Manganese, Inc., Phoenix, AZ (US);
Norman Chow, Vancouver, CA;
Joey Chung-Yen Jung, Vancouver, CA;
Anca-Mihaela Nacu, Vancouver, CA;
Douglas Dale Warkentin, Burnaby, CA;
Rocher Manganese, Inc., Phoenix, AZ (US);
Abstract
A process for water removal and/or recycling of sodium sulphate and/or sodium dithionate containing liquors derived from processing a cobalt resource derived from components of lithium ion batteries comprising steps of deriving from the cobalt resource a solution containing cobalt sulphate and cobalt dithionate, precipitation of cobalt as cobaltous carbonate or cobaltous hydroxide followed by removal thereof from the liquor, crystallization of sodium sulphate and sodium dithionate and removal of the resulting crystals, followed by heating of the crystals to anhydrous sodium sulphate, sulphur dioxide and water and then separating the anhydrous sodium sulphate.