Effect of Modeling Flows on Mixing Time in 40t Ladle with Bottom Gas Blowing Process

Base on the generalized similarity principle, water model experiments had been conducted to investigate mixing phenomena of argon injection from the ladle bottom with eight types of tuyere arrangement. In this research, the harmonic number (H-0) was considered as an evaluating indicator and four variables were mainly investigated, which were the blowing position, aspect ratio, Froude number and gas flowrate. All of these parameters were dimensionless. Furthermore, A fitting equation was newly proposed for mixing time as a function of four influencing factors. As a result, It was showed that the arrangement of tuyeres has a great effect on mixing time in the ladle and a placement of single tuyere at 2/3R away from the bottom center gave the shortest mixing time.