CAS OpenIR  > 湿法冶金清洁生产技术国家工程实验室
Leaching of silica from vanadium-bearing steel slag in sodium hydroxide solution
Xiao, Qinggui1; Chen, Yin2; Gao, Yiying1; Xu, Hongbin1; Zhang, Yi1; Xiao, QG
2010-09-01
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume104Issue:2Pages:216-221
AbstractThe work aims to selectively extract silica from vanadium-bearing steel slag by a leaching process. The effects of the particle size, the ratio of solid to liquid, the concentration of sodium hydroxide solution and the leaching temperature on the leaching behavior of silica from vanadium-bearing steel slag were investigated. The leaching kinetics of silica from vanadium-bearing steel slag in 30-50% w/w NaOH solutions was studied at 240 degrees C and the shrinking-core model was established to express the leaching kinetics of silica. The data showed that the leaching rate was controlled by the chemical reaction on the system interface and the activation energy for the process was found to be 36.4 kJ mol(-1). By the leaching process, the majority of silica could be removed effectively from the vanadium-bearing steel slag and a residue with a low SiO(2) content of 4.28% and a high V(2)O(5) content of 11.15% was obtained. Under these conditions there was partial dissolution of Al and slight dissolution of Cr, Mn and Ti. (C) 2010 Elsevier B.V. All rights reserved.
KeywordReaction Kinetics Vanadium-bearing Steel Slag Silica Leach Sodium Hydroxide
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2010.06.007
Indexed BySCI
Language英语
WOS KeywordCHROMITE
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000282191600014
Citation statistics
Cited Times:30[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5716
Collection湿法冶金清洁生产技术国家工程实验室
Corresponding AuthorXiao, QG
Affiliation1.Chinese Acad Sci, Natl Engn Lab Hydromet Cleaner Prod Technol, Inst Proc Engn, Beijing 100190, Peoples R China
2.Beijing Univ Chem Technol, Res Ctr, Minist Educ High Grav Engn & Technol, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Qinggui,Chen, Yin,Gao, Yiying,et al. Leaching of silica from vanadium-bearing steel slag in sodium hydroxide solution[J]. HYDROMETALLURGY,2010,104(2):216-221.
APA Xiao, Qinggui,Chen, Yin,Gao, Yiying,Xu, Hongbin,Zhang, Yi,&Xiao, QG.(2010).Leaching of silica from vanadium-bearing steel slag in sodium hydroxide solution.HYDROMETALLURGY,104(2),216-221.
MLA Xiao, Qinggui,et al."Leaching of silica from vanadium-bearing steel slag in sodium hydroxide solution".HYDROMETALLURGY 104.2(2010):216-221.
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