On ca-cored wire feeding in ladle, there are surface feeding stage and inner feeding stage. China is still in the surface feeding stage. The gas rotary lance was developed for the present condition of the wire feeding devices in China. The water simulation test and the pressure water simulation test were carried through. The vortex on the surface of the liquid and the cavity, the recirculation and rotary in the liquid were observed in the water simulation test. The characteristic curves of the lance coupled with the different wir...
