Based on analogy theory

the physical behavior of inclusion in liquid steel of ladle with argon stirring lias been studied by using 1; 9 water model and the effect of gas injecting time 2 ~28 min and gas flow-rate ( 1. 19 ~4. 75) x 10

-2

m

3

with different bottom blowing position on inclusion removal was tested. Results showed that most of inclusions could be removed in 8 min with smaller gas flow-rate

but with larger gas flow-rate that was In 20 min and 16 min respectively by using central blowing mode and eccentric blowing mode; by using either central or eccentric blowing mode

with increasing gas flow-rate

the inclusion removal rate increased at beginning

then decreased

and there was an optimum gas flow-rate for removal inclusions: with smaller gas flow-rate

the inclusion removal effect with eccentric blowing mode was better than that with center blow

ing mode

while with larger gas flow-rale the effect was opposite.