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:
Mar. 15, 2016
Filed:
Mar. 01, 2010
Applicant:
Marika Tiihonen, Jyväskylä, FI;
Inventor:
Marika Tiihonen, Jyväskylä, FI;
Assignee:
Outotec Oyj, Espoo, FI;
Primary Examiner:
Int. Cl.
CPC ...
C01D 15/08 (2006.01); C22B 26/12 (2006.01); B01J 39/04 (2006.01); B01J 49/00 (2006.01); C22B 3/20 (2006.01); C22B 3/42 (2006.01);
U.S. Cl.
CPC ...
C22B 26/12 (2013.01); B01J 39/04 (2013.01); B01J 39/046 (2013.01); B01J 49/0069 (2013.01); B01J 49/0078 (2013.01); C22B 3/20 (2013.01); C22B 3/42 (2013.01); Y02P 10/234 (2015.11);
Abstract
The invention relates to a method for purifying impure lithium bicarbonate by means of a cation exchange resin. In addition to solution purification by ion exchange, the treatment stages include the regeneration of impurity metals bound to the resin. Regeneration consists of washing the resin with water, elution with acid solution, washing with water, neutralization with alkali solution and washing with water. It is characteristic of the method that neutralization is performed with sodium hydroxide solution.