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Influence of Oxygen Volume Percent on the Acid Solubility of Titanium Slag during the Oxidation Roasting Process
Zhang, Gengyu1; Lei, Chao2; Zhu, Qingshan1; Fan, Chuanlin1
2017-11-01
Source PublicationSTEEL RESEARCH INTERNATIONAL
ISSN1611-3683
Volume88Issue:11Pages:1700054
Abstract

The influencing mechanism of oxygen volume percent (%VO2) on the acid solubility of the titanium slag during the oxidization at 1273K (1000 degrees C) are investigated. %VO2 has marginal effect on the phase composition evolution, but greatly affects the microstructure evolutions during the oxidation, that is, increasing %VO2 promotes Fe outward migration and further results in the formation of pores and Fe-deficient M3O5 phase, which have opposite effects on the slag solubility. Particularly, for the slag oxidized at low %VO2 (3vol%O-2), its acid solubility is bad, due to no obvious Fe outward migration happens and particles show extremely dense structure, unfavorable for the subsequent reactions. For the slag oxidized at moderate %VO2 (around 6vol%O-2), its acid solubility can be promoted, since Fe outward migration slightly happens and pores form from the original dense structure. However, for the slag oxidized at high %VO2 (21vol%O-2), since excessive Fe outward migration results in the formation of Fe-deficient M3O5 phase in the particle center, which is hard to be reduced and further leached, its acid solubility is also bad, although more pores form in such cases.

KeywordFe Migration Microstructure Evolution Partial Oxygen Pressure Titanium Slag
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1002/srin.201700054
Indexed BySCI
Language英语
WOS KeywordSYNTHETIC RUTILE ; ILMENITE
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
Funding OrganizationNSFC(21325628) ; China Postdoctoral Science Foundation(2017M610911)
WOS IDWOS:000414464400009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23410
Collection生化工程国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Tsinghua Univ, Beijing Key Lab Green Chem React Engn & Technol, Dept Chem Engn, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Gengyu,Lei, Chao,Zhu, Qingshan,et al. Influence of Oxygen Volume Percent on the Acid Solubility of Titanium Slag during the Oxidation Roasting Process[J]. STEEL RESEARCH INTERNATIONAL,2017,88(11):1700054.
APA Zhang, Gengyu,Lei, Chao,Zhu, Qingshan,&Fan, Chuanlin.(2017).Influence of Oxygen Volume Percent on the Acid Solubility of Titanium Slag during the Oxidation Roasting Process.STEEL RESEARCH INTERNATIONAL,88(11),1700054.
MLA Zhang, Gengyu,et al."Influence of Oxygen Volume Percent on the Acid Solubility of Titanium Slag during the Oxidation Roasting Process".STEEL RESEARCH INTERNATIONAL 88.11(2017):1700054.
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