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:
Apr. 02, 2013
Filed:
Jun. 14, 2011
Applicants:
Jean-marc Lalancette, Sherbrooke, CA;
David Lemieux, Thetford Mines, CA;
Bertrand Dubreuil, Trois-Rivieres, CA;
Inventors:
Jean-Marc Lalancette, Sherbrooke, CA;
David Lemieux, Thetford Mines, CA;
Bertrand Dubreuil, Trois-Rivieres, CA;
Assignee:
Nichromet Extraction Inc., , CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01D 5/10 (2006.01); B01J 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and a system for the production of potassium sulfate. The method comprises reacting a chloride of potassium with a magnesium sulfate in an aqueous alcoholic solution, with recycling of magnesium sulfate and production of hydrochloric acid, where the recycling of magnesium is done by a reaction of sulfuric acid on resulting magnesium chloride with corresponding production of magnesium sulfate and hydrochloric acid.