Research on Characteristics of 40 t Ladle Bottom Gas Blowing Process by Water Modeling

Based on prototype of steelworks 40t LF, by using the generalized similarity principle, experimental study on the 1:3 water simulation has been carried out. According to Buckingham's π theorem, a characteristic number equation model to describe the effect of mixing molten steel in bottom argon ladle is obtained. Through regression analysis of experimental data, a fitting equation to express mixing effect of stirred liquid in geometric similarity ladle is got. At the same time, the ANSYS CFX software is used to verify the optimal blowing position of the original blowhole and double blowholes. The result of experiment shows that with the argon bubbling at 2/3R distance from the center of bottom and using a single purging plug, the active zone of the ladle is largest and the stirring mixing time is the shortest.