Numerical Simulation of Dispersion Behavior of Modifier Particle in Hot Slag with Mechanical Stirring

To improve the modification efficiency and effect of hot slag with mechanical stirring, the dispersion behavior of modifier particles with stirring time is investigated by numerical simulation. The hot slag is divided into six regions, and the particle number concentration in different regions of hot slag is evaluated and discussed further. In addition, the effects of particle size and adding position on the distribution of modifier particle are also elucidated. The results show that four circulation streams on each side of a cross-shape impeller which are beneficial to complete mixing between modifier particles and hot slag. A dynamic steady state of particle motion in each region can be obtained within 10 s by mechanical stirring. The particle diameter of 5 mm and adding modifier particle directly to the vortex core of hot slag are more conducive to hot slag modification.