A two-stage reduction process for the production of high-purity ultrafine Ni particles in a micro-fluidized bed reactor

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	A two-stage reduction process for the production of high-purity ultrafine Ni particles in a micro-fluidized bed reactor
	Li, Jun; Liu, Xinwei; Zhou, Li; Zhu, Qingshan; Li, Hongzhong
刊名	PARTICUOLOGY
	2015-04-01
卷号	19 期号:APR 页码:27-34
关键词	Ultrafine Ni powder Production Fluidized bed reactor Two-stage reduction
ISSN号	1674-2001
通讯作者	Zhu, QS (reprint author), Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China.
英文摘要	A novel two-stage reduction process for synthesis of ultrafine nickel powder with a high purity and low density in a fluidized bed reactor has been developed in this work. The raw ultrafine NiO particles are first pre-reduced using hydrogen at lower temperatures (340-400 degrees C), followed by further reduction at higher temperatures (500-600 degrees C). The self-agglomeration of Ni particles formed during low-temperature reduction decreases the sintering activity of the newly formed ultrafine Ni particles, leading to good fluidization quality, even for the subsequent high-temperature reduction process. The agglomerated Ni particles have a high Ni content (above 99 wt%), a low density (0.78 g/cm(3)) and a uniform particle size (approximately 100 mu m). A concept design for a novel two-stage fluidized bed reactor process used to produce high-purity Ni powder was also proposed. This approach may be extended to the synthesis of other ultrafine/nanosized metals or metal oxides through a fluidization method. (C) 2014 Published by Elsevier B.V. on behalf of Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences.
学科主题	Engineering ; Materials Science
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical ; Materials Science, Multidisciplinary
研究领域[WOS]	Engineering ; Materials Science
关键词[WOS]	CHEMICAL-VAPOR-DEPOSITION ; CARBON NANOTUBE ARRAYS ; MASS-PRODUCTION ; NICKEL ; POWDERS ; NANOPARTICLES ; CATALYST ; FINE
收录类别	SCI
语种	英语
WOS记录号	WOS:000352750900004
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/13787]
专题	过程工程研究所_研究所（批量导入）
作者单位	Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Jun,Liu, Xinwei,Zhou, Li,et al. A two-stage reduction process for the production of high-purity ultrafine Ni particles in a micro-fluidized bed reactor[J]. PARTICUOLOGY,2015,19(APR):27-34.
APA	Li, Jun,Liu, Xinwei,Zhou, Li,Zhu, Qingshan,&Li, Hongzhong.(2015).A two-stage reduction process for the production of high-purity ultrafine Ni particles in a micro-fluidized bed reactor.PARTICUOLOGY,19(APR),27-34.
MLA	Li, Jun,et al."A two-stage reduction process for the production of high-purity ultrafine Ni particles in a micro-fluidized bed reactor".PARTICUOLOGY 19.APR(2015):27-34.