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Reduction Extraction Kinetics of Titania and Iron from an Ilmenite by H-2-Ar Gas Mixtures
Wang, Yuming1; Yuan, Zhangfu2,3; Matsuura, Hiroyuki3; Tsukihashi, Fumitaka3; Wang, YM
2009
Source PublicationISIJ INTERNATIONAL
ISSN0915-1559
Volume49Issue:2Pages:164-170
AbstractReduction of an ilmenite concentrate as a natural concentration containing 49.78mass% TiO2 and 2796 mass% total Fe by H-2-Ar gas mixtures was investigated from 1073 to 1 273 K. Both the reduction degree and reduction rate increased with the increase of temperature and hydrogen content. The reduction degree of the ilmenite decreased due to the presence of impurities including manganese and silicon oxides in the ilmenite concentrate. During the reduction, the formation of manganese and silicon oxide-enriched zones prevented complete reduction of Fe2+. The reduction products were characterized using X-ray diffraction, scanning electronic microscope with energy disperse spectroscopy and optical microscopy analysis, respectively. The main phases in reduced products were reduced iron, rutile, reduced rutiles, pseudobrookite and Ti3O5. The reduction reaction proceeded topochemically and the reduction kinetics was discussed. It was found that the rate controlling step was the diffusion of hydrogen gas in the reduced layer.
KeywordIlmenite Reduction Hydrogen Kinetics Rate Controlling Step
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
Language英语
WOS KeywordNATURAL ILMENITE ; FERROUS ORE ; OXIDATION ; HYDROGEN ; PREOXIDATION ; HEMATITE ; BEHAVIOR ; PELLETS ; CARBON
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000263805900003
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6783
Collection多相复杂系统国家重点实验室
Corresponding AuthorWang, YM
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase & Complex Syst, Beijing 100080, Peoples R China
2.Peking Univ, Coll Engn, Dept Energy & Resources Engn, Beijing 100871, Peoples R China
3.Univ Tokyo, Grad Sch Frontier Sci, Dept Adv Mat Sci, Chiba 2778561, Japan
Recommended Citation
GB/T 7714
Wang, Yuming,Yuan, Zhangfu,Matsuura, Hiroyuki,et al. Reduction Extraction Kinetics of Titania and Iron from an Ilmenite by H-2-Ar Gas Mixtures[J]. ISIJ INTERNATIONAL,2009,49(2):164-170.
APA Wang, Yuming,Yuan, Zhangfu,Matsuura, Hiroyuki,Tsukihashi, Fumitaka,&Wang, YM.(2009).Reduction Extraction Kinetics of Titania and Iron from an Ilmenite by H-2-Ar Gas Mixtures.ISIJ INTERNATIONAL,49(2),164-170.
MLA Wang, Yuming,et al."Reduction Extraction Kinetics of Titania and Iron from an Ilmenite by H-2-Ar Gas Mixtures".ISIJ INTERNATIONAL 49.2(2009):164-170.
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