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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
发表期刊STEEL RESEARCH INTERNATIONAL
ISSN1611-3683
卷号88期号:11页码:1700054
摘要

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.

关键词Fe Migration Microstructure Evolution Partial Oxygen Pressure Titanium Slag
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1002/srin.201700054
收录类别SCI
语种英语
关键词[WOS]SYNTHETIC RUTILE ; ILMENITE
WOS研究方向Metallurgy & Metallurgical Engineering
WOS类目Metallurgy & Metallurgical Engineering
项目资助者NSFC(21325628) ; China Postdoctoral Science Foundation(2017M610911)
WOS记录号WOS:000414464400009
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23410
专题生化工程国家重点实验室
作者单位1.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
推荐引用方式
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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