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Iron Steel Vanadium Titanium
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Organizer:Pangang Group Company Ltd.

Sponsored by:Panzhihua Iron & Steel Institute Co.,Ltd. of Pangang Group

Edited & Published by:Editorial Board of Iron Steel Vanadium Titanium Overseas Distribution by China National Publishing Industry Trading Corporation

Chief Editor:Hu Hongfei

Serial Number:ISSN1004-7638 CN51-  1245/TF

CODEN:GTFTAB
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《Iron Steel Vanadium Titanium》---------------------------------2019  No.  2    ---------------------------------20190205



Study on Scarformation Mechanism and Scar Removal for Oxidation Reactor of TiO2 by Chlorination Process

        Zhou Airan

        ( Pangang Group Research Institute Co.,Ltd.,State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,Sichuan,China)


Abstract
        The oxidation reaction is the key process of titanium dioxide preparation by chlorination process,while scarring is a bottleneck restricting longterm operation of oxidation reactor.Therefore,grasping the crux of scar formation is the foundation and key to extend the operation period of oxidation reactor.Accordingly,on the basis of detection results of scarring materials of rutile TiO2 prepared in oxidation reactor by gas phase oxidation method in the production site,this thesis analyzed the reasons for scarring in oxidation reactor through simulation calculations and scarring simulation tests.And this work also proposed the optimization measures for scarring prevention in oxidation reactor,combining with the design structure of existing largescale oxidation reactor in China.

Key  words
        titanium dioxide,chlorination process,oxidation reactor,scarring,gas phase oxidation,simulation calculations

DOI
        10.7513/j.issn.1004-7638.2019.02.005

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