Effect of Viscosity on Dispersion Behavior in Stratified Flow
Norifumi Asahara, Katsuhiro Fuchigami, Masafumi Zeze
Molten oxides are widely used as refining slag and mold flux in the steelmaking process. In the stationary state, the molten oxide and the molten iron form a layer due to their density difference. However, in the actual operation, they are partially mixed and dispersed as droplets, which can increase the slag-metal reaction area or cause the formation of nonmetallic inclusions. In this study, the dispersion behavior in density stratified flow was investigated by water model experiments. It was suggested that the dispersion behavior of silicone oil was affected by viscosity. As the kinematic viscosity was higher than 100 mm2/s, droplet generation tended to be less likely to occur.