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 Publication | JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
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ISSN | 1006-706X |
Volume | 23Issue: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. |
Keyword | Vanadium-titanium Magnetite Ore Oxidation Kinetics Structural Change Element Migration |
Subtype | Article |
WOS Headings | Science & Technology ; Technology |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | TECHNOLOGIES ; ILMENITE |
WOS Research Area | Metallurgy & Metallurgical Engineering |
WOS Subject | Metallurgy & Metallurgical Engineering |
Funding Organization | State Key Development Program for Basic Research of China(2013CB632603) ; National Natural Science Foundation of China(51404228) |
WOS ID | WOS:000388108800005 |
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Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/21661 |
Collection | 多相复杂系统国家重点实验室 |
Affiliation | 1.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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Oxidation Kinetics, (3313KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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