Speaker
Description
The bubble breakup and coalescence behavior and mechanisms in gas-stirred ladle were studied by establishing physical model and mathematical model. The mechanisms of bubble breakup and coalescence in the gas-stirred ladle and their influence on bubble size distribution were revealed. The results show that the bubble breaking behavior has little effect on bubble size and distribution. The bubble aggregation due to turbulent random collisions and buoyancy collision dominate the bubble size, while the bubble tail vortex capture mechanism has a weak effect. Compared with the slit-type ventilated brick, the bubble size of the diffused ventilated brick is significantly smaller, and based on this analysis, an empirical formula for the bubble diameter of the slit-type ventilated brick and the diffused ventilated brick under the current bottom blowing system is established.