Defluidization behavior of iron powders at elevated temperature: Influence of fluidizing gas and particle adhesion

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 湿法冶金清洁生产技术国家工程实验室

	Defluidization behavior of iron powders at elevated temperature: Influence of fluidizing gas and particle adhesion
	Zhong, Yiwei 1,2; Wang, Zhi 1; Guo, Zhancheng 3; Tang, Qing 1
刊名	POWDER TECHNOLOGY
	2012-11-01
卷号	230 期号:0 页码:225-231
关键词	Iron powder Fluidized bed Defluidization Fluidizing gas Particle adhesion High temperature
ISSN号	0032-5910
通讯作者	Wang, Z
英文摘要	The high-temperature defluidization behavior of iron powder was investigated in different fluidizing gases (Ar, N-2, CO, H-2), especially in terms of the physical and chemical properties and change of the gas and solid phase at high temperatures. The agglomeration tendency, represented by the temperature required to reach defluidization, decreased with increasing gas velocity. The fluidization quality was improved by increasing gas density and viscosity, and thus the agglomeration tendency decreased. In particular, due to chemical adsorption of CO, an inert coating formed on the surface and thus reduced significantly the defluidization temperature. The thermo-mechanical analysis indicated that the iron powder performed the viscosity and adhesion activity due to surface softening and that the particle adhesion increased with increasing temperature. Based on the surface viscosity, the change of adhesive force calculated was in accordance with the observed trend of the minimum fluidization velocities, which suggested the increase of inter-particle force with temperature. (C) 2012 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	BED COMBUSTION ; SIZE DISTRIBUTION ; AGGLOMERATION ; FLUIDIZATION ; GASIFICATION
收录类别	SCI
语种	英语
WOS记录号	WOS:000309300200029
公开日期	2013-10-11
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3189]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydrometallurg Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China 3.Univ Sci & Technol Beijing, Key Lab Ecol & Recycle Met, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Yiwei,Wang, Zhi,Guo, Zhancheng,et al. Defluidization behavior of iron powders at elevated temperature: Influence of fluidizing gas and particle adhesion[J]. POWDER TECHNOLOGY,2012,230(0):225-231.
APA	Zhong, Yiwei,Wang, Zhi,Guo, Zhancheng,&Tang, Qing.(2012).Defluidization behavior of iron powders at elevated temperature: Influence of fluidizing gas and particle adhesion.POWDER TECHNOLOGY,230(0),225-231.
MLA	Zhong, Yiwei,et al."Defluidization behavior of iron powders at elevated temperature: Influence of fluidizing gas and particle adhesion".POWDER TECHNOLOGY 230.0(2012):225-231.