DICP OpenIR
Influence of Content and Microstructure of Deposited Carbon on Fluidization Behavior of Iron Powder at Elevated Temperatures
Lei, Chao1,2; Zhang, Tao3; Zhang, Jianbo1,2; Fan, Chuanlin1; Zhu, Qingshan1; Li, Hongzhong1
KeywordFluidized Bed Defluidization Prevention Iron Powder Carbon Deposition Cohesion Force
Source PublicationISIJ INTERNATIONAL
2014
DOI10.2355/isijinternational.54.589
Volume54Issue:3Pages:589-595
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectMetallurgy & Metallurgical Engineering
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS KeywordFE2O3 PARTICLES ; BED REDUCTION ; STICKING ; DEFLUIDIZATION ; PREVENTION ; MECHANISM ; ORES ; GAS ; CO
AbstractCarbon was deposited on the surface of an iron powder to study the influence of carbon content and microstructure on defluidization prevention at 823-1 173 K. It was found that at each temperature there existed a minimal carbon content (C-min), below which defluidization occurred and C-min increases with increasing operation temperature. Microstructure of the deposited carbon, tailored by adjusting deposition conditions, showed significant influence on defluidization. Less carbon would be needed to prevent defluidization under a lower rate of carbon deposition since a more uniformly coating of carbon can be obtainable under such conditions. When the fluidizing gas is nitrogen, defluidization will eventually occur after extended time of fluidization even if the initial carbon content is greater than C-min, due to attrition that causes the decrease of carbon content with increasing time of fluidization. However, when the fluidizing gas is 70% CO-30% H-2, defluidization will not occur if the initial carbon content is greater than C-min since the carbon content will increase with increasing time of fluidization due to the further deposition of carbon under the CO-H-2 atmosphere. Furthermore, a fluidizing phase diagram was established for the carbon-coated iron powder and the mechanism of defluidization prevention was explained using a cohesive force based model.
Language英语
WOS IDWOS:000333509300018
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145440
Collection中国科学院大连化学物理研究所
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
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Lei, Chao,Zhang, Tao,Zhang, Jianbo,et al. Influence of Content and Microstructure of Deposited Carbon on Fluidization Behavior of Iron Powder at Elevated Temperatures[J]. ISIJ INTERNATIONAL,2014,54(3):589-595.
APA Lei, Chao,Zhang, Tao,Zhang, Jianbo,Fan, Chuanlin,Zhu, Qingshan,&Li, Hongzhong.(2014).Influence of Content and Microstructure of Deposited Carbon on Fluidization Behavior of Iron Powder at Elevated Temperatures.ISIJ INTERNATIONAL,54(3),589-595.
MLA Lei, Chao,et al."Influence of Content and Microstructure of Deposited Carbon on Fluidization Behavior of Iron Powder at Elevated Temperatures".ISIJ INTERNATIONAL 54.3(2014):589-595.
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