Sticking behavior caused by sintering in gas fluidisation reduction of haematite

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

	Sticking behavior caused by sintering in gas fluidisation reduction of haematite
	Zhong, Y. -W.1,2; Wang, Z.1; Gong, X. -Z.1; Guo, Z. -C.3
刊名	IRONMAKING & STEELMAKING
	2012
卷号	39 期号:1 页码:38-44
关键词	Fluidised bed reduction Sticking Sintering Nano-/microstructures Cohesive particle Agglomeration
ISSN号	0301-9233
通讯作者	Wang, Z
英文摘要	The sticking of haematite and iron powder during the fluidisation process was investigated using a visual fluidised bed reactor. The results showed that the amount of iron needed to stick decreased with increasing fluidisation temperature. Owing to no iron whisker formation in the experiments, the sticking phenomenon was discussed in the special case where iron morphology was dense or porous, and much attention should be paid to the effect of sintering of iron-iron contact on sticking, especially, surface nano-/microstructures of fresh iron that caused an increase in particle cohesiveness and sticking tendency. It was assumed that haematite covered with iron transformed into cohesive particles that self-agglomerated above minimum sintering temperature. Owing to the interface reaction induced, the sticking temperature of haematite was always lower than that of iron powder in the same size ranges. On the basis of sintering with surface diffusion mechanism, the tendency of sticking was enhanced by reduction reaction through reinforcing mass transfer on particle surface. Therefore, when iron whiskers were suppressed, sticking phenomenon was viewed as the agglomeration fluidisation among cohesive particles under sintering action.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Metallurgy & Metallurgical Engineering
研究领域[WOS]	Metallurgy & Metallurgical Engineering
关键词[WOS]	IRON-ORE FINES ; BED REDUCTION ; SMELTING REDUCTION ; SULFUR PRESSURE ; HYDROGEN
收录类别	SCI
语种	英语
WOS记录号	WOS:000298488800006
公开日期	2013-10-28
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4329]
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 Hydromet 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, Y. -W.,Wang, Z.,Gong, X. -Z.,et al. Sticking behavior caused by sintering in gas fluidisation reduction of haematite[J]. IRONMAKING & STEELMAKING,2012,39(1):38-44.
APA	Zhong, Y. -W.,Wang, Z.,Gong, X. -Z.,&Guo, Z. -C..(2012).Sticking behavior caused by sintering in gas fluidisation reduction of haematite.IRONMAKING & STEELMAKING,39(1),38-44.
MLA	Zhong, Y. -W.,et al."Sticking behavior caused by sintering in gas fluidisation reduction of haematite".IRONMAKING & STEELMAKING 39.1(2012):38-44.