ABSTRACT

A quarter scale water model experiment is employed to investigate the effect of single and double porous plug placement and blowing flow rates on the mixing time, slag eye area, and slag entrapment depth. As a result, when the blowing flow rate is greater than 180 L min^–1, the blowing effect of double blowing plugs is better than that of single blowing plugs. The open eye area and slag entrapment depth in the double blow plug arrangement are smaller than that in the single blow plug arrangement. In general, the ladle refining effect is better when the blow plug is arranged at 0.4R position and the angle between the two blow plugs is 120°. The final recommended argon blowing process is 240–300 L min^–1 for the heating and alloying process and 60–120 L min^–1 for the soft blowing process, respectively.

摘要

采用四分之一比例水模型实验研究了单孔塞和双孔塞的放置以及喷吹流量对混合时间、渣眼面积和挡渣深度的影响。因此，当吹气流量大于180 L min ^–1时，双吹塞的吹气效果优于单吹塞。双吹塞装置中的开孔面积和炉渣截留深度小于单吹塞装置中的开孔面积和炉渣截留深度。一般情况下，吹塞布置在0.4R位置、两吹塞夹角为120°时，钢包精炼效果较好。最终推荐的吹氩工艺为 240–300 L min ^–1用于加热和合金化工艺，60–120 L min ^–1分别用于软吹工艺。