Abstract
A physical model was set up to represent the 300 t CAS-OB at Shou Gang Jing Tang Iron and Steel works. The study results indicate that the mixing time decreased and then increased with increasing the distance from the bottom centre of ladle to the bubbling plug, and was the best at the 0·3r position. The mixing time decreased and then increased with increasing gas flow rate. Mixing time is minimum when the flow rate is above 0·49 m3 h−1. In the slagging process, when the gas rate is 0·42 m3 h−1, the diameter of the slag open eye reached the outer diameter of snorkel. Industrial trials showed improved operational performance of the CAS-OB.
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