CAS OpenIR
In-situ capturing of fluorine with CaO for accelerated defluorination roasting of lepidolite in a fluidized bed reactor
Li, Jun1; Kong, Jing1; Zhu, Qingshan1,2; Li, Hongzhong1
2019-07-15
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume353Pages:498-504
AbstractIn-situ capturing of fluorine (F) with CaO in a fluidized bed reactor is proposed to accelerate the defluorination reaction and to improve the lithium extraction from lepidolite ore. Compared to the roasting process without addition of CaO, the Li extraction efficiency is improved by ca. 15 percentage points in the present of CaO during the roasting reaction. And more than 91% of the fluorides volatilized from the lepidolite are captured by CaO particles in the fluidized bed reactor and are converted to CaF2. The formation of CaF2 on the surface of CaO particle is attributed to the generated HF from the lepidolite particles. The in-situ capturing of HF by addition of CaO changes the thermodynamic equilibrium state that benefits the defluorination reaction. Therefore, the in-situ capturing of fluorine with CaO in fluidized bed reactor is a promising method for the de-fluorinate and for the lithium extraction for versatile applications. (C) 2019 Elsevier B.V. All rights reserved.
KeywordDefluorination roasting Fluidized bed Lepidolite Lithium in-situ capturing of fluorine
DOI10.1016/j.powtec.2019.05.063
Language英语
WOS KeywordLITHIUM-CARBONATE ; EXTRACTION ; WATER ; SPODUMENE ; WASTE ; BRINE ; CO
Funding ProjectNational Natural Scientific Foundation of China[U1462128] ; National Natural Scientific Foundation of China[91334108] ; State Key Development Program for Basic Research of China[2015CB251402]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Scientific Foundation of China ; State Key Development Program for Basic Research of China
WOS IDWOS:000472695100046
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/29995
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Jun; 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, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Jun,Kong, Jing,Zhu, Qingshan,et al. In-situ capturing of fluorine with CaO for accelerated defluorination roasting of lepidolite in a fluidized bed reactor[J]. POWDER TECHNOLOGY,2019,353:498-504.
APA Li, Jun,Kong, Jing,Zhu, Qingshan,&Li, Hongzhong.(2019).In-situ capturing of fluorine with CaO for accelerated defluorination roasting of lepidolite in a fluidized bed reactor.POWDER TECHNOLOGY,353,498-504.
MLA Li, Jun,et al."In-situ capturing of fluorine with CaO for accelerated defluorination roasting of lepidolite in a fluidized bed reactor".POWDER TECHNOLOGY 353(2019):498-504.
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