Title:
LITHIUM EXTRACTION SYSTEM AND LITHIUM EXTRACTION METHOD FOR SALT LAKE BRINE
Document Type and Number:
WIPO Patent Application WO/2022/161492
Kind Code:
A1
Abstract:
Provided are a lithium extraction system and a lithium extraction method for salt lake brine. The lithium extraction system comprises: a continuous magnesium removal apparatus, a continuous lithium precipitation apparatus, and a continuous washing apparatus, wherein the continuous magnesium removal apparatus is used for carrying out continuous magnesium removal treatment on lithium-rich brine by using a sodium hydroxide solution to obtain a magnesium-removed liquid and magnesium slag; the continuous lithium precipitation apparatus is connected to the continuous magnesium removal apparatus, and is used for carrying out continuous lithium precipitation treatment on the magnesium-removed liquid to obtain crude lithium carbonate and a lithium precipitation mother liquor; and the continuous washing apparatus is connected to the continuous lithium precipitation apparatus, and is used for continuously washing the crude lithium carbonate to obtain a lithium carbonate solid. By means of the present application, the lithium extraction system for salt lake brine is creatively used, and such an integrated lithium extraction system can realize continuous production, so as to significantly reduce labor intensity and reduce the product difference caused by subjective distinguishing of manual operation and control, thereby improving the quality stability of the product, reducing the product cost, and improving the batch qualification of the lithium carbonate product.
Inventors:
ZHOU WENLONG (CN)
XIAN PENGFEI (CN)
QIU SHUANG (CN)
YANG YONGLIANG (CN)
XU CHANGQING (CN)
DU GUOSHAN (CN)
XIAN PENGFEI (CN)
QIU SHUANG (CN)
YANG YONGLIANG (CN)
XU CHANGQING (CN)
DU GUOSHAN (CN)
Application Number:
PCT/CN2022/075025
Publication Date:
August 04, 2022
Filing Date:
January 29, 2022
Export Citation:
Assignee:
CHINA ENFI ENG CORP (CN)
International Classes:
C01D15/08
Foreign References:
| CN112850758A | 2021-05-28 | |||
| CN110963512A | 2020-04-07 | |||
| CN102963914A | 2013-03-13 | |||
| CN108793204A | 2018-11-13 | |||
| CN107540005A | 2018-01-05 | |||
| CN102730879A | 2012-10-17 | |||
| CN1335263A | 2002-02-13 | |||
| CN1398785A | 2003-02-26 | |||
| US20040005267A1 | 2004-01-08 | |||
| US6207126B1 | 2001-03-27 |
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (CN)
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