Optimal Mixing Effect of LF Bottom‐Blown Stirring by Two Nozzles

The mixing behaviour in a 150t ladle furnace induced by two‐nozzle jetting was investigated on the basis of 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 favourable mixing was achieved when the two nozzles were symmetrically arranged at half radii in the ladle, with 45° separation angle. The empirical relationship between the mixing time and stirring power intensity was established for two‐nozzle jetting based on the present experimental results. In addition, the swelling above the bath surface was also investigated with the two‐nozzle jetting.