| Abstract Scope |
In the current study, a three-dimensional mathematical model was developed to investigate the molten steel-slag-argon gas-air phase multiphase flow and slag entrainment during the slab continuous casting process. The transient evolution of slag droplets, including the size, number, velocity, composition, and spatial distribution, was quantitative studied using the coupled large eddy simulation (LES) turbulent model, VOF multiphase model, Discrete Phase Model (DPM), thermodynamic and kinetic models, and user defined functions. Results indicated that the slag entrainment was found to occurred easily at the 1/4 width of the meniscus. The maximum diameter of the entrained slag droplet can exceed about 10 mm, and the diameter of slag droplets was mainly 2-5 mm. The interaction between the molten steel and the entrained slag droplet during the transient movement in the mold make the content of Al2O3 in the slag droplet increased gradually, while the content of SiO2 decreased gradually. |