Swelling behavior of iron ore pellet reduced by H-2-CO mixtures

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	Swelling behavior of iron ore pellet reduced by H-2-CO mixtures
	Yi, L. Y. ; Huang, Z. C. ; Jiang, T. ; Wang, L. N. ; Qi, T.
刊名	Powder Technology
	2015
页码	290-295
关键词	Iron ore pellet Gaseous reduction H-2 and CO mixture Volume swelling Compressive strength Phase transformation Iron precipitation morphology HEMATITE PELLETS WHISKER FORMATION DIRECT REDUCTION OXIDE COMPACTS GAS MGO MICROSTRUCTURE HYDROGEN STICKING QUALITY
其他题名	Powder Technol.
中文摘要	Hydrogen and carbon monoxide mixtures are main reducing agents for gaseous direct reduction (DR) processes. In the present study, volume change of pellet reduced in H-2-CO mixtures at 800-1000 degrees C was examined with a novel consecutive imaging method. Results showed that pellet expansion intensified with temperature and CO content in atmosphere and it reached the maximum at reduction degree of 20%-40% due to the formation of massive wustite phase. Pellet in H-2 rich atmospheres passed the wustite stage rapidly and swelling consequently weakened. Iron whiskers that formed in the later reduction stage led to persistent swelling as pellet reduced by CO. However, pellets contracted obviously in H-2 containing atmospheres for the collection of iron phase in the later. Compressive strength of pellets during reduction dropped to be the lowest in 10-20 min. And the time for pellets remained in the "low strength zone" (<500 N/P) prolonged with temperature and CO proportion in reducing gas, which showed good correlation with their swelling behavior. (C) 2014 Elsevier B.V. All rights reserved.
收录类别	SCI
原文出处	://WOS:000347507100034
语种	英语
WOS记录号	WOS:000347507100034
公开日期	2015-04-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11878]
专题	过程工程研究所_研究所（批量导入）
推荐引用方式 GB/T 7714	Yi, L. Y.,Huang, Z. C.,Jiang, T.,et al. Swelling behavior of iron ore pellet reduced by H-2-CO mixtures[J]. Powder Technology,2015:290-295.
APA	Yi, L. Y.,Huang, Z. C.,Jiang, T.,Wang, L. N.,&Qi, T..(2015).Swelling behavior of iron ore pellet reduced by H-2-CO mixtures.Powder Technology,290-295.
MLA	Yi, L. Y.,et al."Swelling behavior of iron ore pellet reduced by H-2-CO mixtures".Powder Technology (2015):290-295.