The rule of flowing of converter slag particles (/% : 40~60CaO
10 ~20SiO
2
1 ~5Al
2
O
3
7 ~ 10FeO
5 〜10Fe
2
O
3
5 ~ 15MgO
2 ~6MnO,1 ~5P
2
O
5
0~10f-CaO) in rotary container (cylinder reactor) with rotating angular velocity 0. 3 ~ 2. 0 r/s is simulated by software Fluent to analyze the characteristics of flowing of slag particles. The mathematic model is established to define optimum rotate velocity for removing free calcium oxide. Results show that with increasing rotating velocity of the cylinder the rotating status of flowing of slag particles develops into small
bigger waterfall and circle flowing
and as rotating angle velocity increases to 0. 8 r/s
flowing status of eddy occurs in center of cylinder.