Spray lance heigh direct impact slag splashing effect during slag splashing in AOD,the spot which is corroded seriously could be recoveried effectively by adjusting the spray lance height.

Control methods of the lance position, the furnace temperature, Φ( SO2) , the dregs type and so on each technological parameter of ausmelt converter were introduced briefly.

To maintain the queit blowing,the correct lance height and slag basicity must be controlled,which can be realized with th.

The audio frequency slag melting applying is helpful to direct blowing process,and help converter operator to judge exactly slag status and control slag drying and splashing by controlling lance height and charging slagmaking auxiliary materials.

In this study,the influence of oxygen lance height during catch carbon process to the procedure parameters such as penetration depth and mixing time in 260 t combined blowing converters was investigated for improving final slag condition, lining erosion and non-uniform distribution of components in bath caused by unsuitable lance height.