METHOD FOR PREPARING HIGH-PURITY LITHIUM CARBONATE FROM BRINE

Title:

METHOD FOR PREPARING HIGH-PURITY LITHIUM CARBONATE FROM BRINE

Document Type and Number:

WIPO Patent Application WO/2012/067348

Kind Code:

A3

Abstract:

Provided is a method for preparing high-purity lithium carbonate from brine. According to the present invention, the method for preparing lithium carbonate from brine is characterized by comprising the steps of: removing magnesium ions from brine; adsorbing lithium ions by introducing an adsorbent into the brine from which the magnesium ions were removed, and then desorbing the lithium ions by introducing the adsorbent having the adsorbed lithium ions into a strong acid solution; concentrating the strong acid solution in which the lithium ions are desorbed; and enabling the lithium ions contained in the concentrated solution to chemically react with carbonate precursors to obtain lithium carbonate.

Inventors:

KIM JOON-SOO (KR)
CHUNG KYEONG-WOO (KR)
LEE JIN-YOUNG (KR)
KIM SUNG-DON (KR)

Application Number:

PCT/KR2011/007593

Publication Date:

July 12, 2012

Filing Date:

October 12, 2011

Export Citation:

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Assignee:

KOREA INST GEOSCIENCE & MINERA (KR)
KIM JOON-SOO (KR)
CHUNG KYEONG-WOO (KR)
LEE JIN-YOUNG (KR)
KIM SUNG-DON (KR)

International Classes:

C01D15/08; C01D7/26; H01M4/58

Foreign References:

US5993759A	1999-11-30
US20040074774A1	2004-04-22
US6143260A	2000-11-07
US7157065B2	2007-01-02

Other References: