Innovative method for minimization of waste containing Fe, Mn and Ti during comprehensive utilization of vanadium slag

doi:10.1016/j.wasman.2021.04.034

	Innovative method for minimization of waste containing Fe, Mn and Ti during comprehensive utilization of vanadium slag
	Liu, Shiyuan 1,2; Wang, Lijun 2; Chou, Kuo-Chih 3
刊名	WASTE MANAGEMENT
	2021-05-15
卷号	127 页码:179-188
关键词	Vanadium slag Molten salt chlorination Kinetics Separation
ISSN号	0956-053X
DOI	10.1016/j.wasman.2021.04.034
英文摘要	More 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.
资助项目	National 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关键词	BEARING TITANOMAGNETITE ; RECOVERY ; CHROMIUM ; EXTRACTION ; IRON ; CR ; OPTIMIZATION ; TAILINGS ; TITANIUM
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000656420800019
资助机构	National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49021]
专题	中国科学院过程工程研究所
通讯作者	Wang, Lijun
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Univ Sci & Technol Beijing, Collaborat Innovat Ctr Steel Technol, Beijing 100083, Peoples R China 3.Univ Sci & Technol, State Key Lab Adv Met, Beijing 100083, Peoples R China
推荐引用方式 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.