2003 Volume 89 Issue 2 Pages 252-257
The purposes of combustion by multi function burner lance are skull-less operation of vacuum vessel, increasing the temperature of molten steel, and improving the decarburizing rate. In this paper the decarburizing rate is investigated in case of oxygen blowing and burning with excess oxygen.
Oxygen blowing can improve the decarburizing rate with the RH multi function burner lance even if carbon content in molten steel is high before RH-treatment.
Neither pollution nor the decrease in the quality was seen from the composition change of molten steel in RH treatment and the quality investigation of the product in operation with RH multi function burner lance.
