Intensified decomposition of vanadium slag via aeration in concentrated NaOH solution
Liu, Longjie1,2; Wang, Zhonghang1,2; Du, Hao1,2; Zheng, Shili1; Lassi, Ulla3; Zhang, Yi1
2017-03-10
发表期刊INTERNATIONAL JOURNAL OF MINERAL PROCESSING
ISSN0301-7516
卷号160页码:1-7
摘要A new metallurgical process via aeration for the decomposition of vanadium slag in concentrated NaOH solution was proposed. The improvement of oxygen mass transfer coefficient when using aeration at different NaOH concentration was studied and the effects of critical reaction parameters on vanadium extraction were systematically investigated. The optimal condition was determined to be: alkali concentration of 60%, reaction temperature of 130 degrees C, alkali-to-ore mass ratio of 6:1, stirring speed of 500 rpm. The yield of vanadium could reach to 97.41% after reacting for 6 h under this reaction condition. The reaction temperature in this new method is 50-270 degrees C lower than the current liquid oxidation methods reported in the literatures, and the medium alkaline concentration declined from 85% to 60%, exhibiting significant advantages in energy consumption as well as reactor design. Kinetics study indicated that the extraction of vanadium was governed by internal diffusion, and the apparent activation energy was calculated to be 17.57 kJ/mol. (C) 2017 Elsevier B.V. All rights reserved.
关键词Vanadium Slag Extraction Aeration System Oxygen Mass Transfer
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
DOI10.1016/j.minpro.2017.01.003
收录类别SCI
语种英语
关键词[WOS]AQUEOUS-SOLUTIONS ; WASTE-WATER ; OXYGEN-TRANSFER ; MICRO-BUBBLES ; MASS-TRANSFER ; MICROBUBBLE ; GENERATION ; KINETICS ; SOLUBILITIES ; MECHANISM
WOS研究方向Engineering ; Mineralogy ; Mining & Mineral Processing
WOS类目Engineering, Chemical ; Mineralogy ; Mining & Mineral Processing
项目资助者Major State Basic Research Development Program of China (973 program)(2013CB632601) ; National Natural Science Foundation of China(91634111 ; 51404227)
WOS记录号WOS:000395607600001
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22073
专题湿法冶金清洁生产技术国家工程实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Oulu, FIN-90014 Oulu, Finland
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Liu, Longjie,Wang, Zhonghang,Du, Hao,et al. Intensified decomposition of vanadium slag via aeration in concentrated NaOH solution[J]. INTERNATIONAL JOURNAL OF MINERAL PROCESSING,2017,160:1-7.
APA Liu, Longjie,Wang, Zhonghang,Du, Hao,Zheng, Shili,Lassi, Ulla,&Zhang, Yi.(2017).Intensified decomposition of vanadium slag via aeration in concentrated NaOH solution.INTERNATIONAL JOURNAL OF MINERAL PROCESSING,160,1-7.
MLA Liu, Longjie,et al."Intensified decomposition of vanadium slag via aeration in concentrated NaOH solution".INTERNATIONAL JOURNAL OF MINERAL PROCESSING 160(2017):1-7.
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