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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
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号313页码:27-35
摘要The 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.
关键词Particle Size Nano-silicon Silicon Vaporization Numerical Simulation Thermal Plasma
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.02.062
收录类别SCI
语种英语
关键词[WOS]HEAT-TRANSFER ; CARRIER-GAS ; NUMERICAL-SIMULATION ; NANOPARTICLES ; JET ; CFD ; INJECTION ; FLOW ; SPHEROIDIZATION ; TEMPERATURE
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Foundation of China (NSFC)(11535003)
WOS记录号WOS:000399508100004
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22482
专题多相复杂系统国家重点实验室
作者单位1.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
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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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