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Patent Searching and Data


Title:
METHOD FOR SEPARATION AND RECOVERY OF ALKALI METAL AND ALKALI METAL SEPARATION AND RECOVERY APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/146391
Kind Code:
A1
Abstract:
The present invention is related to a method for separation and recovery of alkali metal in which raw water containing an alkali metal and a bivalent ion is permeably separated using a nanofiltration membrane to yield permeated water and concentrated water, the bivalent ion being removed from the concentrated water and circulated back to the raw water, and at least part of the alkali metal being recovered from the permeated water.

Inventors:
TAKABATAKE HIROO (JP)
TANIGUCHI MASAHIDE (JP)
SASAKI TAKAO (JP)
Application Number:
PCT/JP2013/057539
Publication Date:
October 03, 2013
Filing Date:
March 15, 2013
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C22B26/12; B01D9/02; B01D61/02; C02F1/04; C02F1/28; C02F1/42; C02F1/44; C02F1/58; C22B3/42; C22B7/00; C22B26/10
Domestic Patent References:
WO2010006366A12010-01-21
Foreign References:
JP2003154362A2003-05-27
JP2010227768A2010-10-14
JP2001508925A2001-07-03
JPH11504564A1999-04-27
Other References:
XIANMING WEN ET AL.: "Preliminary study on recovering lithium chloride from lithium- containing waters by nanofiltration", SEPARATION AND PURIFICATION TECHNOLOGY, vol. 49, 2006, pages 230 - 236
YANG GANG ET AL.: "Investigation of Mg2+/Li+ Separation by Nanofiltration", CHINESE JOURNAL OF CHEMICAL ENGINEERING, vol. 19, no. 4, 2011, pages 586 - 591
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
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