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Electrochemical decomposition of vanadium slag in concentrated NaOH solution
Alternative TitleHydrometallurgy
Wang, Zhonghang1,2; Zheng, Shili1; Wang, Shaona1; Qin, Yaling1; Du, Hao1; Zhang, Yi1
2015
Source PublicationHYDROMETALLURGY
ISSN0304-386X
Volume151Pages:51-55
AbstractA novel method that introduces an electrochemical field to enhance the decomposition of vanadium slag in concentrated NaOH solution was proposed. Under the optimal conditions (alkali concentration of 40 wt.%, reaction temperature of 120 degrees C, alkali-to-ore mass ratio of 4:1, stirring speed of 1000 rpm, and slot current density of 750 A/m(2)), the extraction percentages of vanadium and chromium could reach approximately 95% and 90%, respectively, after 6 h of reaction time. Compared with the current liquid oxidation methods, the reaction temperature in this new approach is reduced by 60-280 degrees C and the medium concentration is decreased by more than 30%, demonstrating substantial advantages and prospects in terms of actual operation and industrial application. (C) 2014 Elsevier B.V. All rights reserved.; A novel method that introduces an electrochemical field to enhance the decomposition of vanadium slag in concentrated NaOH solution was proposed. Under the optimal conditions (alkali concentration of 40 wt.%, reaction temperature of 120 degrees C, alkali-to-ore mass ratio of 4:1, stirring speed of 1000 rpm, and slot current density of 750 A/m(2)), the extraction percentages of vanadium and chromium could reach approximately 95% and 90%, respectively, after 6 h of reaction time. Compared with the current liquid oxidation methods, the reaction temperature in this new approach is reduced by 60-280 degrees C and the medium concentration is decreased by more than 30%, demonstrating substantial advantages and prospects in terms of actual operation and industrial application. (C) 2014 Elsevier B.V. All rights reserved.
KeywordVanadium Slag Electrochemical Extraction Naoh Sub-molten Salt
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.hydromet.2014.10.017
URL查看原文
Indexed BySCI
Language英语
WOS KeywordOXYGEN ; DIFFUSIVITY ; SOLUBILITY ; CHROMITE ; KINETICS ; LITHIUM
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000348955100006
Citation statistics
Cited Times:39[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11853
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Zhonghang,Zheng, Shili,Wang, Shaona,et al. Electrochemical decomposition of vanadium slag in concentrated NaOH solution[J]. HYDROMETALLURGY,2015,151:51-55.
APA Wang, Zhonghang,Zheng, Shili,Wang, Shaona,Qin, Yaling,Du, Hao,&Zhang, Yi.(2015).Electrochemical decomposition of vanadium slag in concentrated NaOH solution.HYDROMETALLURGY,151,51-55.
MLA Wang, Zhonghang,et al."Electrochemical decomposition of vanadium slag in concentrated NaOH solution".HYDROMETALLURGY 151(2015):51-55.
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