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Gas blowing at the bottom of tundish is an efficient metallurgy technique in  clean steelmaking and has been widely concerned. In this paper, spherical  alumina particles were selected to model inclusions, 1:3 scale model was  utilized, the removal efficiency of inclusions with the gas bottomblowing in  the tundish was studied by physical and mathematical modeling. The  mathematical model is validated by comparing the predicted and measured  residence time distributions and dye flow patterns of tracer. The results  show that while the removal efficiency of large size particles has no obvious  changes, the gas bottom-blowing has great contribution to the removal of  small particles

Physical and mathematical modeling of inclusion removal with gas bottom-blowing in continuous casting tundish