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Simulation and experimental observation of silicon particles' vaporization in RF thermal plasma reactor for preparing Si nano-powder
He, Jiaping1,2; Bai, Liuyang1; Jin, Huacheng1,2; Jia, Zhiyuan1; Hou, Guolin1; Yuan, Fangli1
2017-05-15
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume313Pages:27-35
AbstractThe particle size of coarse silicon is a very important parameter in plasma-assisted production of nano-silicon, because the appropriate size cannot only improve nano-silicon's quality, but also reduce the cost of raw materials. In this work, simulations were formulated to investigate the effect of particles' size on silicon's vaporization process inside a radio-frequency (RF) thermal plasma reactor. By counting between particles' residence time in a high temperature region and their fully-gasified time inside the reactor, particles' motion and vaporization process can be obtained in statistics. After comparing these two parameters, the gasification ratio of coarse silicon with different sizes can be finally captured. It is shown that particles below 30 mu m all have the gasification ratio above 99.0%, which is suggested as the upper limit of coarse silicon in future experimental works. Moreover, it is also shown that gasification ratios of particles above 30 mu m are greatly reduced, illustrating that sacrificing gasification ratio to apply relatively bigger particles to prepare silicon nanopowder is inappropriate and uneconomical. (C) 2017 Elsevier B.V. All rights reserved.
KeywordParticle Size Nano-silicon Silicon Vaporization Numerical Simulation Thermal Plasma
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.powtec.2017.02.062
Indexed BySCI
Language英语
WOS KeywordHEAT-TRANSFER ; CARRIER-GAS ; NUMERICAL-SIMULATION ; NANOPARTICLES ; JET ; CFD ; INJECTION ; FLOW ; SPHEROIDIZATION ; TEMPERATURE
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China (NSFC)(11535003)
WOS IDWOS:000399508100004
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22482
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
He, Jiaping,Bai, Liuyang,Jin, Huacheng,et al. Simulation and experimental observation of silicon particles' vaporization in RF thermal plasma reactor for preparing Si nano-powder[J]. POWDER TECHNOLOGY,2017,313:27-35.
APA He, Jiaping,Bai, Liuyang,Jin, Huacheng,Jia, Zhiyuan,Hou, Guolin,&Yuan, Fangli.(2017).Simulation and experimental observation of silicon particles' vaporization in RF thermal plasma reactor for preparing Si nano-powder.POWDER TECHNOLOGY,313,27-35.
MLA He, Jiaping,et al."Simulation and experimental observation of silicon particles' vaporization in RF thermal plasma reactor for preparing Si nano-powder".POWDER TECHNOLOGY 313(2017):27-35.
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