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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
2015-04-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume19Issue:APRPages:27-34
Abstract

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.

KeywordUltrafine Ni Powder Production Fluidized Bed Reactor Two-stage Reduction
SubtypeArticle
Subject AreaEngineering ; Materials Science
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2014.04.008
Indexed BySCI
Language英语
WOS KeywordChemical-vapor-deposition ; Carbon Nanotube Arrays ; Mass-production ; Nickel ; Powders ; Nanoparticles ; Catalyst ; Fine
Funding ProjectNational Special Project for Development of Major Scientific Equipment [2011YQ12003908] ; China National Funds for Distinguished Young Scientists [21325628]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
WOS IDWOS:000352750900004
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/13787
Collection研究所(批量导入)
Corresponding AuthorZhu, Qingshan
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
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.
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