CAS OpenIR
Selective extraction of vanadium from pre-oxidized vanadium slag by carbochlorination in fluidized bed reactor
Du, Guangchao1,2,3; Fan, Chuanlin1,2; Yang, Haitao1,2; Zhu, Qingshan1,2
2019-11-10
Source PublicationJOURNAL OF CLEANER PRODUCTION
ISSN0959-6526
Volume237Pages:10
Abstract

Most of the vanadium (V) is industrially extracted from vanadium slag, a byproduct in steelmaking, via the sodium roasting-water leaching or calcification roasting-acid leaching process, which usually suffers from environment pollution or decrease in product purity. In this paper, a novel process of vanadium extraction featuring carbochlorination of pre-oxidized vanadium slag with chlorine (Cl-2) and nitrogen (N-2) mixture in a fluidized bed reactor was proposed. And the selectivity between vanadium and iron (Fe) in the slag was primarily concerned, due to the high content of the latter in vanadium slag. The thermodynamic analysis reveals that there exists a favorable zone for selective chlorination of V from Fe compounds. Subsequently, carbochlorination experiments were conducted to investigate the influences of chlorination temperature and time, addition amount of petroleum coke and pressure fraction of chlorine on extraction of V and Fe. And 87.47% of V together with 18.79% of Fe can be extracted from the pre-oxidized vanadium slag by chlorination at 650 degrees C for 120 min with chlorine pressure fraction [P(Cl-2)/ P(Cl-2+N-2)] = 0.5 and petroleum coke mass fraction in raw materials for chlorination Rc = 10%. The results demonstrate that the selective chlorination process has good potential to recover vanadium from vanadium slags in efficient and clean ways. (C) 2019 Elsevier Ltd. All rights reserved.

KeywordVanadium Extraction Vanadium Slag Selective Chlorination Pre-oxidization Thermodynamics
DOI10.1016/j.jclepro.2019.117765
Language英语
WOS KeywordChlorination Kinetics ; Converter Slag ; Recovery ; Chromium ; Titanium ; Catalysts ; Temperature ; Mechanism ; Zirconia ; Dioxide
Funding ProjectNational Natural Science Foundation of China[51774262] ; National Natural Science Foundation of China[51504231] ; National Natural Science Foundation of China[51504232] ; National Natural Science Foundation of China[21736010] ; Open Project of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization[CNMRCUKF1704]
WOS Research AreaScience & Technology - Other Topics ; Engineering ; Environmental Sciences & Ecology
WOS SubjectGreen & Sustainable Science & Technology ; Engineering, Environmental ; Environmental Sciences
Funding OrganizationNational Natural Science Foundation of China ; Open Project of State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization
WOS IDWOS:000483462700080
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30670
Collection中国科学院过程工程研究所
Corresponding AuthorFan, Chuanlin; Zhu, Qingshan
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Pangang Grp Res Inst Co Ltd, State Key Lab Vanadium & Titanium Resources Compr, Panzhihua 617000, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Du, Guangchao,Fan, Chuanlin,Yang, Haitao,et al. Selective extraction of vanadium from pre-oxidized vanadium slag by carbochlorination in fluidized bed reactor[J]. JOURNAL OF CLEANER PRODUCTION,2019,237:10.
APA Du, Guangchao,Fan, Chuanlin,Yang, Haitao,&Zhu, Qingshan.(2019).Selective extraction of vanadium from pre-oxidized vanadium slag by carbochlorination in fluidized bed reactor.JOURNAL OF CLEANER PRODUCTION,237,10.
MLA Du, Guangchao,et al."Selective extraction of vanadium from pre-oxidized vanadium slag by carbochlorination in fluidized bed reactor".JOURNAL OF CLEANER PRODUCTION 237(2019):10.
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