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The mixing of metal and slag where argon bubbles enter the atmosphere is analyzed by physical modeling. The best results are obtained with bubbling injection at a rate of 10–12 L/min, when the bubble diameter on reaching the slag phase is 3.25 mm. The mass of the metal droplets captured in the slag is 0.6 g; their speed in the slag phase is 1 m/s; the penetration depth is 3 cm; and the residence time...
On the basis of previous research on a physical model and analytical estimates, a new injector design is proposed. Industrial tests of the new design are conducted on the continuous slab-casting machine at Alchevsk metallurgical works. The new design includes a ring covering the dosing nozzle. The gas is injected through calibrated holes in special refractory tubes. The tests indicate that a refining...
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