A Numerical Study on the State of the Blast Furnace Thermal Reserve Zone under Different Starting Temperatures of Coke Solution Loss Reaction

doi:10.1002/srin.202100823

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	A Numerical Study on the State of the Blast Furnace Thermal Reserve Zone under Different Starting Temperatures of Coke Solution Loss Reaction
	Meng, Fanchao 2,3; Shao, Lei 2,3; Ni, Wenjie 1; Zou, Zongshu 2,3
刊名	STEEL RESEARCH INTERNATIONAL
	2022
卷号	93 期号:7
关键词	blast furnace indirect reduction coke solution loss reaction gas utilization efficiency iron ore reducibility thermal reserve zone top pressure
ISSN号	1611-3683
DOI	10.1002/srin.202100823
英文摘要	As a measure to improve the blast furnace gas utilization efficiency during the iron making, decreasing the temperature of blast furnace thermal reserve zone (here called TRZ for short) by increasing the coke reactivity and therefore lowering the starting temperature of coke solution loss reaction (CSLR) has received much attention. However, this measure is proposed merely from a thermodynamic point of view by considering that the FeO reduction with CO is slightly exothermic. The effect of the CSLR starting temperature on the state of TRZ that also determines the kinetic conditions for indirect reduction has yet to be clarified. For this, a 1D kinetic model built previously is adopted in this paper to investigate how the TRZ state and gas utilization efficiency respond to the changes in the starting temperature of CSLR. The results show that with a decrease in the starting temperature, the height and average temperature of TRZ decrease, and the lower edge of TRZ shifts upwards. The gas utilization efficiency increases first and then decreases, thus leading to a critical starting temperature. Moreover, a lower critical temperature corresponds to a higher gas utilization efficiency. An increase in iron ore reducibility or top pressure can lower the critical temperature.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000765314200001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158105]
专题	兰州理工大学
作者单位	1.Lanzhou Univ Technol, Sch Mat Sci & Technol, Lanzhou 730050, Peoples R China 2.Northeastern Univ, Minist Educ, Key Lab Ecol Met Multimet Mineral, Shenyang 110819, Peoples R China; 3.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China;
推荐引用方式 GB/T 7714	Meng, Fanchao,Shao, Lei,Ni, Wenjie,et al. A Numerical Study on the State of the Blast Furnace Thermal Reserve Zone under Different Starting Temperatures of Coke Solution Loss Reaction[J]. STEEL RESEARCH INTERNATIONAL,2022,93(7).
APA	Meng, Fanchao,Shao, Lei,Ni, Wenjie,&Zou, Zongshu.(2022).A Numerical Study on the State of the Blast Furnace Thermal Reserve Zone under Different Starting Temperatures of Coke Solution Loss Reaction.STEEL RESEARCH INTERNATIONAL,93(7).
MLA	Meng, Fanchao,et al."A Numerical Study on the State of the Blast Furnace Thermal Reserve Zone under Different Starting Temperatures of Coke Solution Loss Reaction".STEEL RESEARCH INTERNATIONAL 93.7(2022).