Title:
METHOD FOR SEPARATING AND RECOVERING ALKALI METAL, AND APPARATUS FOR SEPARATING AND RECOVERING ALKALI METAL
Document Type and Number:
WIPO Patent Application WO/2013/005694
Kind Code:
A1
Abstract:
The present invention relates to a method for separating and recovering an alkali metal, which comprises: a step for obtaining nanofiltration membrane permeated water and nanofiltration membrane concentrated water by subjecting raw water that contains an alkali metal to separation by permeation with use of a nanofiltration membrane; a step for obtaining concentration unit concentrated water by subjecting the nanofiltration membrane permeated water to separation by permeation with use of a concentration unit; and a step of recovering at least some of the alkali metal that is contained in the concentration unit concentrated water.
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Inventors:
TAKABATAKE HIROO
TANIGUCHI MASAHIDE
SASAKI TAKAO
TANIGUCHI MASAHIDE
SASAKI TAKAO
Application Number:
PCT/JP2012/066798
Publication Date:
January 10, 2013
Filing Date:
June 29, 2012
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
TAKABATAKE HIROO
TANIGUCHI MASAHIDE
SASAKI TAKAO
TAKABATAKE HIROO
TANIGUCHI MASAHIDE
SASAKI TAKAO
International Classes:
B01D61/58; B01D61/02; C02F1/44; C22B7/00; C22B26/10
Domestic Patent References:
| WO2010097202A2 | 2010-09-02 |
Foreign References:
| JP2005342664A | 2005-12-15 | |||
| JP2011006275A | 2011-01-13 | |||
| JP2001508925A | 2001-07-03 | |||
| JP2006320798A | 2006-11-30 | |||
| JP2012120943A | 2012-06-28 |
Attorney, Agent or Firm:
HAMADA Yuriko et al. (JP)
Yuriko Hamada (JP)
Yuriko Hamada (JP)
Download PDF:
Claims:
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