Zeng Zhaopeng,Du Xiqian,Wang Yao,et al.Optimization and Simulation of Stirring Process for 100 t Electric Arc Furnace Bath and Its Application[J].Special Steel,2023,44(06):45-52.
Zeng Zhaopeng,Du Xiqian,Wang Yao,et al.Optimization and Simulation of Stirring Process for 100 t Electric Arc Furnace Bath and Its Application[J].Special Steel,2023,44(06):45-52. DOI: 10.20057/j.1003-8620.2023-00051.
In view of the low free-opening rate of 100 t Electric Arc Furnace (EAF) in a factory, using Fluent software to study the flow characteristics of liquid bath with different deflection angles of oxygen lance. It is found that when the deflection angle of oxygen lance increases from 0° to 30°, the EBT dead zone is virtually eliminated, but the impact strength of molten steel on furnace wall increases by 148.4%. In order to balance the impact strength of furnace wall and liquid bath stirring, the optimization scheme of 1
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, 3
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and 4
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oxygen lance deflection of 10° and 2
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oxygen lance deflection of 30° is determined. The practice shows that the free-opening rate increases from 75.2% to 95.6%, the average tapping temperature is reduced by 6 ℃.The application data on ML08Al steel show that the end-point oxygen in molten steel is reduced by 20.9%, and the end-point T.Fe content mass fraction in slag is reduced by 21.6%.
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