Title:
A removing method of the metal ion in phosphoric acid solution
Document Type and Number:
Japanese Patent JP6132878
Kind Code:
B2
Abstract:
The present invention relates to a method for removing metal ions in the phosphoric acid solution, and particularly to a method for removing metal ions in the phosphoric acid solution which comprises a step of passing an ion exchange resin through the acid solution to activate the ion exchange resin; a step of filling a resin tower with the activated ion exchange resin and washing it with ultra-pure water, and a step of passing the phosphoric acid solution to the washed ion exchange resin, thereby causing each individual concentration of metal ions with the oxidation number of 2 to 7 in the phosphoric acid solution to be less than 100 ppb.
Inventors:
Han Seung Hyun
Jang Wook
Jang Wook
Application Number:
JP2015135074A
Publication Date:
May 24, 2017
Filing Date:
July 06, 2015
Export Citation:
Assignee:
OCI Company Ltd.
International Classes:
C02F1/42; B01J39/05; B01J39/07; B01J39/20; B01J45/00; B01J49/06; B01J49/53; B01J49/60
Domestic Patent References:
| JP55500190A | ||||
| JP5138163A | ||||
| JP2002079116A | ||||
| JP8048507A | ||||
| JP53031586A | ||||
| JP2010100875A | ||||
| JP2014088284A | ||||
| JP2009242777A | ||||
| JP2007117781A | ||||
| JP56141843A | ||||
| JP2012505814A |
Foreign References:
| KR1020040102709A |
Attorney, Agent or Firm:
Seiichi Inoue