a water model with geometric similarity : 3 for 120 t ladle in steel is established. The effect of argon conditions of single and double porous brick ( porous location
blowing gas rate 0. 4 ~ 2. 0 m
3
/h
etc) on mixing time to define ladle bottom blowing process parameters has been tested. The experimental results show that with single porous block layout as the porous block layout at bottom 0. 63R (R- radius of ladle bottom)
the mixing time of liquid is shortest ; for double porous block layout
increasing the distance between two porous block is favorable to reduce mixing time
the mixing time of double porous blocks in 180° angle and at 0. 6R is shortest; with same gas flow rate
the effect of double porous blocks is obviously better than that of single porous block.