Title:
TITANIUM DIOXIDE RECOVERY METHOD USING FLUORIDE AND MICROWAVE
Document Type and Number:
WIPO Patent Application WO/2020/235779
Kind Code:
A1
Abstract:
The present invention relates to a method for recovery of titanium dioxide (TiO2) by using fluoride and a microwave and, more particularly, to a method for separating a titanium fluoride compound by adding a fluoride solution to a raw material including titanium (Ti), applying microwaves to same to prepare a mixture containing a titanium fluoride compound formed therein, adding a heating element to the mixture, and then applying microwaves to the heating element to separate a titanium fluoride compound as a precursor of titanium dioxide, and to a method for recovering titanium dioxide by using the separated titanium fluoride compound. According to the present invention, a process of fluorination and sublimation of a Ti material is conducted by microwave application, and a heating element is additionally added to perform a reaction with a FeF2 residue formed in the titanium dioxide recovery process to generate additional heat, whereby the process time can be greatly reduced, with the consequent improvement of process efficiency.
Inventors:
PARK MIN KYU (KR)
KWON O HAK (KR)
CHOI SUAK HYAN (KR)
KIM JONG CHEON (KR)
KWON O HAK (KR)
CHOI SUAK HYAN (KR)
KIM JONG CHEON (KR)
Application Number:
PCT/KR2020/002007
Publication Date:
November 26, 2020
Filing Date:
February 13, 2020
Export Citation:
Assignee:
MONOLITH CO LTD (KR)
International Classes:
C01G23/02; B01J19/12; C01G23/047
Foreign References:
| KR20150076898A | 2015-07-07 | |||
| KR20160147057A | 2016-12-21 | |||
| JP2009262128A | 2009-11-12 | |||
| KR20150017584A | 2015-02-17 | |||
| KR101741591B1 | 2017-05-30 |
Attorney, Agent or Firm:
IPCJ PATENT & LAW FIRM (KR)
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