Abstract: 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.

Key words:  , Ladle Refining, Water Model, Influencing Factor

摘要： 以钢厂40t LF为原型,应用广义相似理论进行1:3水力学模拟实验研究。根据白金汉π定律,得到描述底吹氩钢包内钢液混合效果的特征数方程模型。通过对实验数据回归分析,得出几何相似的钢包炉内钢液受搅拌后混合效果的特征数方程。同时,使用ANSYS CFX软件对原吹气孔及单孔、双孔最佳吹气位置进行数值模拟验证。研究结果表明:钢包吹气位置设在距炉底圆心2/3R处和单孔吹气,钢液混匀时间最短,钢包流场活跃区最大。

关键词: 钢包精炼, 水力模型, 影响因素