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Oxidation Kinetics, Structural Changes and Element Migration during Oxidation Process of Vanadium-titanium Magnetite Ore
Pan, Feng1; Zhu, Qing-shan1; Du, Zhan1,2; Sun, Hao-yan1
2016-11-01
Source PublicationJOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
ISSN1006-706X
Volume23Issue:11Pages:1160-1167
Abstract

The oxidation kinetics, structural changes, and elements migration during the oxidation process of the vanadium-titanium magnetite (VTM) ore were analyzed. Kinetics analysis indicated that the oxidation process was controlled by diffusion control and could be divided into interface diffusion and lattice diffusion with apparent activation energy of 99. 69 kJ/mol and 144. 08 kJ/mol in the range of 800 - 1000 degrees C, respectively. The surface structure changed with the oxidization temperature as follows: dense surface -> nano-sized sheets -> submicron particles -> molten particles. The compact structure changed into porous one because of the elements migration and enrichment. Both Fe and Ti elements migrated in the opposite direction during the oxidation process. The V element in the raw ore stably existed in the form of V5+ state, some vanadium migrated and occupied the tetrahedral sites of the hematite during the oxidation process.

KeywordVanadium-titanium Magnetite Ore Oxidation Kinetics Structural Change Element Migration
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordTECHNOLOGIES ; ILMENITE
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationState Key Development Program for Basic Research of China(2013CB632603) ; National Natural Science Foundation of China(51404228)
WOS IDWOS:000388108800005
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21661
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Pan, Feng,Zhu, Qing-shan,Du, Zhan,et al. Oxidation Kinetics, Structural Changes and Element Migration during Oxidation Process of Vanadium-titanium Magnetite Ore[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2016,23(11):1160-1167.
APA Pan, Feng,Zhu, Qing-shan,Du, Zhan,&Sun, Hao-yan.(2016).Oxidation Kinetics, Structural Changes and Element Migration during Oxidation Process of Vanadium-titanium Magnetite Ore.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,23(11),1160-1167.
MLA Pan, Feng,et al."Oxidation Kinetics, Structural Changes and Element Migration during Oxidation Process of Vanadium-titanium Magnetite Ore".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 23.11(2016):1160-1167.
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