curves are nearly the same. The minimum breakthrough
time tmin is 33 sand 36 s , and the average residence time
t, is 260 sand 257 s , respectively. Fig. 3 (c) shows the
inclusion flotation rates for two strand outlets. The inclusion
flotation rate is 36.43 % and 36. 73 % respectively,
and the flotation rates are nearly the same,
with the average flotation rate of 36. 6%.
The RTD curves, flow patterns and inclusion
removals in two strands are correspondingly the same.
Because the tundish structure with a turbulence inhibitor
is symmetrical, the flow field is symmetrical.