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Different blowing positions will affect the mixing effect. Hydraulic models and production practices show that the best position of the blowing point should usually be 1/2 to 2/3 of the radius of the bottom of the bag (from the center of the bottom of the bag);
The rising bubble flow here will cause horizontal impact force, thereby promoting the circulation flow of stainless steel, reducing the vortex area, shortening the mixing time. At the same time, the degree of emulsification of steel slag is low, which is beneficial to the uniformity of molten steel composition and temperature and the elimination of inclusions. .
The air blowing at the bottom of the ladle center is beneficial to the reaction between the top slag of the ladle and the molten steel, and the desulfurization effect is good.
For argon blowing and stirring with the main purpose of uniformizing the temperature and composition of molten steel, the blowing point should be deviated from the center of the bottom of the ladle.
In general, the position of bottom blow argon should be determined according to the purpose of ladle treatment. For top-blown argon, the deeper the argon blowing gun is inserted, the better the mixing effect.
Link to this article：Location selection of ladle bottom blown argon breathable bricks
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