高炉内渣铁焦界面润湿行为研究现状及展望

doi:10.13228/j.boyuan.issn0449-749x.20210031

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Abstract As the blast furnace is currently the world′s largest moving bed metallurgical reactor, maintaining good gas and liquid permeability in the blast furnace is the key to ensuring the stability of the blast furnace. The interior of the blast furnace is divided by the cohesive zone, divided into an upper solid bulk area and a lower solid-liquid coexistence area. The lower solid-liquid coexistence area is an important area that determines the gas permeability and gas flow distribution of the blast furnace. Therefore, a comprehensive study of the reaction of the solid-liquid coexistence zone in the lower part of the blast furnace is the key to clarifying the gas and liquid permeability of the blast furnace. The interaction between the coke bed and liquid iron/slag in the high-temperature zone of the blast furnace is an important factor that determines the iron-coke-slag interaction and gas and liquid permeability of the blast furnace. Adjusting the wettability changes of the liquid iron/slag and coke bed can effectively improve the gas and liquid permeability, which will ultimately affect the production efficiency and stability of the blast furnace. This article first summarizes the interfacial wetting behavior, and then summarizes the effects of liquid iron composition and coke properties on the iron-coke interfacial wetting behavior. Secondly, the effects of temperature, slag composition, and coke′s properties on the wetting behavior of the slag-coke interface are analyzed. The results showed that the current research on the wetting behavior of the slag-iron-coke interface in the blast furnace has been studied from laboratory experiments and basic simulations. It can provide preliminary theoretical guidance for blast furnace operators to understand the wetting behavior of the slag-iron-coke interface in the blast furnace. However, it is still necessary to conduct in-depth research on the changes in wetting behavior that can reflect the actual complex conditions in the blast furnace.

Key words： blast furnace ironmaking coke coke-iron interface coke-slag interface wetting

Received: 12 January 2021

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	ZHANG Jian-liang
	JIANG Chun-he
	LI Ke-jiang
	BI Zhi-sheng

Cite this article:

ZHANG Jian-liang,JIANG Chun-he,LI Ke-jiang等. Research situation and prospect of interfacial wetting behavior of iron-coke-slag system in blast furnace[J]. Iron and Steel, 2021, 56(11): 10-18.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20210031 OR http://www.chinamet.cn/Jweb_gt/EN/Y2021/V56/I11/10

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