Transient Flow and Inclusion Removal in Gas Stirred Ladle during Teeming Process

A water model of a typical 150t ladle was designed and constructed to determine the flow characteristics. A kind of organic emulsion was selected to model nonmetallic inclusion particles with the purpose of studying the inclusion removal effect under gas blowing in a teeming ladle. The presented modeling method for inclusion particles in the teeming process is different from those under steady condition. The numerical simulation was performed by using commercial software with the Eulerian‐Eulerian multiphase model applied to a model gas blown through a ladle. The numerical component of this study was conducted aiming at exploring the transient flow characteristics in teeming ladle corresponding to the physical experimental condition. Under the present conditions the authors came to the conclusion that soft gas blowing (2.7～4.0 × 10^?6 m³/s) was favourable to float inclusion particles into the slag layer. It is suggested to end the gas blowing when the drainage percentage reaches 50%.