Investigation into the Effect of LF Bottom Blown Stirring by Two Nozzles

摘要

Investigation into the mixing of 150t ladle furnace by two-nozzle jetting was performed by a water model simulation of 1:4. The effects of nozzle arrangements including separation angle, radial position and asymmetry as well as tracer adding position on the mixing time were studied. The most favorable mixing is achieved when the two nozzles are symmetrically arranged at half radii in the ladle, with 45° separation angle. The empirical relationship between the mixing time and stirring power intensity has been established for two-nozzle jesting based on the present experimental results. In addition, the swelling above bath surface is also investigated with two-nozzle jetting.