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Innovative method for minimization of waste containing Fe, Mn and Ti during comprehensive utilization of vanadium slag
Liu, Shiyuan1,2; Wang, Lijun1; Chou, Kuo-Chih3
2021-05-15
Source PublicationWASTE MANAGEMENT
ISSN0956-053X
Volume127Pages:179-188
AbstractMore than 1.2 million tons of tailings containing approximately 30 wt% of Fe from traditional vanadium extraction processes are discarded every year as solid waste, which waste resources. In order to achieve effective and green utilization of waste, a novel process was proposed to keep Cr and V at Cr3+ and V3+ during extraction by using AlCl3-NaCl-KCl molten salt in Ar gas atmosphere to control the valuable elements (Cr, V, Mn and Fe) from oxidized. The morphological features of vanadium slag reacted in the temperature range from 200 degrees C to 800 degrees C and volatilization of samples under different AlCl3/slag ratios were analyzed. Meanwhile, the chlorinated kinetics of V, Cr, Mn and Fe in vanadium slag were systemically investigated in temperature range of 850 degrees C-950 degrees C. The kinetics investigation indicated that the chlorination processes of Fe and Mn were restricted by mass transfer in product layer (Al-Si-O mixture) and the chlorination processes of V and Cr were controlled by surface reaction. The apparent activation energies for Fe, Mn, V, and Cr are 105.28 kJ/mol, 94.26 kJ/mol, 64.64 kJ/mol, and 63.30 kJ/mol, respectively. After chlorination, the separation of metal chlorides was achieved. TiCl4 is hydrolyzed to obtain TiO2. Mn can be separated from VCl3, CrCl3, FeCl2, and MnCl2 by controlling the electrolytic voltages. Fe-V-Cr alloy was obtained by electrolysis at 2.3 V. (C) 2021 Published by Elsevier Ltd.
KeywordVanadium slag Molten salt chlorination Kinetics Separation
DOI10.1016/j.wasman.2021.04.034
Language英语
WOS KeywordBEARING TITANOMAGNETITE ; RECOVERY ; CHROMIUM ; EXTRACTION ; IRON ; CR ; OPTIMIZATION ; TAILINGS ; TITANIUM
Funding ProjectNational Natural Science Foundation of China[51904286] ; National Natural Science Foundation of China[51922003] ; National Natural Science Foundation of China[51774027] ; National Natural Science Foundation of China[51734002] ; China Postdoctoral Science Foundation[2019M650848]
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; China Postdoctoral Science Foundation
WOS IDWOS:000656420800019
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/49022
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Lijun
Affiliation1.Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
3.Univ Sci & Technol, State Key Lab Adv Met, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Liu, Shiyuan,Wang, Lijun,Chou, Kuo-Chih. Innovative method for minimization of waste containing Fe, Mn and Ti during comprehensive utilization of vanadium slag[J]. WASTE MANAGEMENT,2021,127:179-188.
APA Liu, Shiyuan,Wang, Lijun,&Chou, Kuo-Chih.(2021).Innovative method for minimization of waste containing Fe, Mn and Ti during comprehensive utilization of vanadium slag.WASTE MANAGEMENT,127,179-188.
MLA Liu, Shiyuan,et al."Innovative method for minimization of waste containing Fe, Mn and Ti during comprehensive utilization of vanadium slag".WASTE MANAGEMENT 127(2021):179-188.
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