Modeling of Multiphase Flow and Interfacial Behavior Between Slag and Steel in the Gas Stirring Ladle
In the present study,the effect of gas flow rate on homogenization and inclusion removal in a gas stirred ladle was investigated.A mathematical model has been developed to analyze the transient three-dimensional and three-phase flow in an argon gas bottom stirring ladle with one and two off-centered porous plugs.The numerical simulation was performed with the Eulerian-Eulerian multiphase model applied to model gas blown through a ladle.The numerical component of this study was conducted aiming at exploring the transient flow characteristics in teeming ladle corresponding to the physical experimental condition.CFD calculation was also carried out as an auxiliary tool.The mixing time predicted by CFD simulation agreed well with both the model experiments and industrial data.The comparison of the mixing time,the deformation of slag layer and the behavior of slag/steel interface between one and two plugs system is made.It is found that the proper selection of argon gas flow rate and plug arrangements during a ladle refining cycle is required for different refining purposes considering the mixing and metallurgical reaction in a three-phase ladle system.Both the experiments and CFD calculation strongly suggested that a low gas flow rate should be applied in the ladle treatment.
ladle furnace multiphase flow open-eye formation mixing time numerical simulation
ZHANG Yuan-fu QI Feng-sheng WANG Fang LI Bao-kuan
School of Materials and Metallurgy,Northeastern University,Shenyang,110819,Liaoning,China
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-6
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）