底吹氩钢包内渣-金反应及脱硫行为的数值模拟

doi:10.13228/j.boyuan.issn0449-749x.20180283

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Abstract In order to improve the desulfurization efficiency of the gas-stirred ladle，a computation fluid dynamics-simultaneous reaction model （CFD-SRM） coupled model was proposed to describe the desulfurization behavior in a gas-stirred ladle. In present model，the effect of liquid-gas two phase flow caused by bottom blowing，and the oxygen absorption and oxidation reactions in slag eyes were considered，and model verification was carried out by 80 t ladle hot experiment. The effects of different blowing conditions on desulfurization efficiency in gas-stirred ladles were investigated. The results show that the gas-liquid two-phase flow has an important influence on the mass transfer rate of components and the desulfurization efficiency，and the predicted sulfur content changing with time in ladle agrees well with the measured data. The desulfurization efficiency of dual blowing is higher than that of single center or eccentric blowing. With the increasing of slag-metal height ratio，the desulfurization efficiency increases. But once the slag-metal height ratio exceeds 0.04，the desulfurization efficiency changes little. As the gas flow rate increases，the desulfurization rate increases first and then decreases. But when the bottom blowing flow exceeds 300 L/min，the desulfurization rate begins to decrease.

Received: 12 July 2018 Published: 24 December 2018

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	Articles by authors
	LV Wen-Shou
	LIU Zhuang
	YU Xiao-Yu
	ZHU Miao-Yong

Cite this article:

LV Wen-Shou,LIU Zhuang,YU Xiao-Yu等. Numerical simulation of slag-metal reaction and desulfurization behavior in gas-stirred ladle[J]. Iron and Steel, 2018, 53(12): 37-43.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20180283 OR http://www.chinamet.cn/Jweb_gt/EN/Y2018/V53/I12/37

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