转炉出钢过程中涡流卷渣的数值模拟研究

Numerical Simulation of Slag Entrainment by Vortex Flux During Tapping at Converter

为了提高转炉出钢挡渣效率,改善钢水质量,需要研发出更高效低耗的新型挡渣方法。利用CFD流体模拟软件Fluent6.3,通过基于压力的分离隐式求解器,采用k-ε双方程模拟出炉内钢液不同初始液位下静态出钢过程。通过对出钢过程的流场分析,从数学模拟的角度阐述了初始液位不同高度下的漩涡形成时间、漩涡的运动轨迹、出钢过程转炉内钢液的运动特征,针对涡流引起卷渣现象的研究,为今后研制新型挡渣方法提供了理论指导。

In order to effectively reduce the quantity of slag entrained into ladle during tapping and improve steel quality,a more efficient and low-cost method of slag stopping should be developed.In this paper,numerical simulation for static tapping process under different original molten steel levels has been computed by pressure based segregated implicit solver and k-ε turbulence model in commercial software Fluent 6.3.Under different original molten steel levels in the converter,formation time and movement of vortex flux and the flow characteristics of molten steel during tapping are illuminated in the aspect of numerical simulation by analyzing the flow field of molten steel.The research on slag entrainment during tapping,as well as simulation of tapping and vortex deforming,is expected to provide researchers with useful guidance in exploring advanced slag stopping technology.