Title:
チタン化合物の回収方法、酸化チタンの製造方法およびチタン酸アルカリの製造方法
Document Type and Number:
Japanese Patent JP6762205
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide method for conveniently recovering a titanium compound in high purity and in high yield from drainage containing a titanium compound, which is generated when a solid catalyst component for polymerizing olefin or a catalyst for polymerizing olefin is prepared.SOLUTION: A method for recovering a titanium compound from drainage containing a titanium compound which is generated when a solid catalyst component for polymerizing olefin or a catalyst for polymerizing olefin is prepared, comprises: a hydrolysis step of bringing drainage which contains the titanium compound into contact with water, and subjecting the titanium compound to hydrolysis treatment; a primary neutralization step of adding a neutralizer to a water phase of the hydrolyzed drainage so that pH of the water phase may become 1.5 or more and less than 2.5; a secondary neutralization step of adding a neutralizer to a treated liquid which has been subjected to the primary neutralization treatment so that pH of the liquid may become 2.5 or more; and thereby coagulating titanium oxide.SELECTED DRAWING: None
Inventors:
Masashi Ozaki
Application Number:
JP2016223936A
Publication Date:
September 30, 2020
Filing Date:
November 17, 2016
Export Citation:
Assignee:
Toho Titanium Co., Ltd.
International Classes:
C01G23/04; C01G23/00; C02F1/58; C02F1/66
Domestic Patent References:
| JP51034567A | ||||
| JP2001261340A | ||||
| JP7196724A | ||||
| JP2003230888A | ||||
| JP9272815A | ||||
| JP2010189215A | ||||
| JP2011163828A |
Foreign References:
| WO2010004925A1 |
Attorney, Agent or Firm:
Patent Business Corporation Ashitaba International Patent Office
Kenji Akatsuka
Yasuyuki Sakata
Ken Shibuya
Kenji Akatsuka
Yasuyuki Sakata
Ken Shibuya