METHOD FOR PRODUCING LITHIUM COMPOUND

Title:

METHOD FOR PRODUCING LITHIUM COMPOUND

Document Type and Number:

WIPO Patent Application WO/2018/070726

Kind Code:

A1

Abstract:

The present disclosure relates to a method for producing a lithium compound. The method comprises the steps of: preparing lithium phosphate; obtaining a mixture by mixing the lithium phosphate and sulfuric acid; converting the lithium phosphate into lithium sulfate through a reaction in the mixture; and separating the lithium sulfate as a solid phase. In the step of converting the lithium phosphate into lithium sulfate through a reaction in the mixture, the total concentration ([P+S] mol/L) of phosphorous (P) and sulfur (S) in a liquid phase of the mixture is 5 mol/L or more.

Inventors:

KIM JUYOUNG (KR)
KIM KI YOUNG (KR)
JUNG WOO CHUL (KR)
PARK KWANG SEOK (KR)
LEE HYUNWOO (KR)
PARK WOONKYOUNG (KR)
KIM SANG WON (KR)
PARK JUNG KWAN (KR)
YANG HEOK (KR)
PARK SUNG KOOK (KR)
KUK SEUNG TAEK (KR)

Application Number:

PCT/KR2017/010979

Publication Date:

April 19, 2018

Filing Date:

September 29, 2017

Export Citation:

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Assignee:

POSCO (KR)
RES INST IND SCIENCE & TECH (KR)

International Classes:

C01D15/02; B01D61/42; C01B25/222; C01B25/30; C01D15/06; C01D15/08

Domestic Patent References:

WO2016070217A1

2016-05-12

Foreign References:

US2608465A	1952-08-26
KR20160002579A	2016-01-08
JP2009270189A	2009-11-19
JP2012504545A	2012-02-23

Other References: