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:
Feb. 09, 2016
Filed:
Mar. 19, 2013
Outotec (Finland) Oy, Espoo, FI;
Marika Tiihonen, Espoo, FI;
Liisa Haavanlammi, Espoo, FI;
Outotec (Finland) Oy, Espoo, FI;
Abstract
A method and arrangement for recovering lithium carbonate from a raw material containing lithium, which method comprises pulping () the raw material containing lithium in the presence of water and sodium carbonate for producing a slurry containing lithium from the raw material containing lithium. After pulping the lithium-containing slurry is leached () for dissolving the lithium in the solution thus producing a solution containing lithium carbonate. After pulping and leaching the method comprises carbonating () the solution containing lithium carbonate by using carbon dioxide under atmospheric conditions for producing a solution containing lithium bicarbonate and separating () the solids form the solution. The solution containing lithium bicarbonate is purified () to produce a purified solution containing lithium bicarbonate, and recovering by crystallizing () lithium carbonate from the purified lithium bicarbonate-containing solution.