Abstract：According to the inclusion removal process by argon blowing with multiple plugs around tapping hole in teeming ladle, VOF-DPM coupling mathematical model was established of a 130 t ladle to study the process of molten steel flow field under argon blowing conditions and the influence of argon blowing flow rate, residual steel height and the number of blocked plugs on inclusion removal rate during ladle teeming process. The results show that, in the early stage of teeming, with the increase of argon blowing time, the gas-liquid two-phase region gradually increases, and the two circulating flows above the ladle nozzle gradually become larger. When the argon blowing time is 12 s, stable gas-liquid two-phase flow is formed in the ladle. With the decrease of the residual steel height, the inclusion removal rate increases gradually, but when the residual steel height decreases from 500 mm to 250 mm, the increase of the inclusion removal rate slows down. With the increase of argon blowing flow rate, there are two local optimal points (30 L/min and 60 L/min) for inclusion removal rate. Before and after the two local optimal points, the inclusion removal rate tends to increase and then decrease. Compared with unblocked, the difference in the inclusion removal rate is not significant when one plug is blocked, while the inclusion removal rate decreases significantly when two plugs or three plugs are blocked. The research results can provide theoretical guidance for practical application of the process.
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2023, Vol. 33 
