According to the prototype of 100 t ladle with single nozzle bottom-blowing argon

the flow status of liquid in ladle during argon blowing process is simulated by using three dimensional continuity equation

momentum N-S equation and turbulence K-e double equations. The numerical simulation on single nozzle argon blowing (0-700 L/min) process has been carried out by sing Mixture multiphase flow model and the liquid flow status and the phenomenon of slag entrapment at liquid surface in ladle before and after immersing cylinder with diameter 691.05 mm and immersing depth 650 mm are compared and analyzed. Results show that without immersed cylinder the critical slag entrapment argon blowing rate is 102 L/min

while with immerged cylinder the critical slag entrapment argon blowing rate increases to 217 L/min

immerged cylinder may increase liquid stirring effect with increasing argon blowing rate to accelerate liquid mixing.