Patent ID: 6693948
Filing Date: 2004-02-17
Classification: C21C,F27B,F27D,Y02P

Abstract:
A method for arc-melting a cold iron source comprising the steps of:(1) introducing an exhaust gas generated in a melting chamber into a preheating chamber to preheat the cold iron source; (2) melting the cold iron source in the melting chamber by an arc electrode, while continuously maintaining the cold iron source in the preheating shaft and in the melting chamber by continuously or intermittently supplying the cold iron source to the preheating shaft; (3) tilting the melting chamber at the time when a molten iron has accumulated in the melting chamber; (4) heating the molten iron for a predetermined time by the arc electrode to rise a temperature of the molten iron; and (5) tapping the molten iron under conditions that the cold iron source is continuously maintained in the preheating shaft and in the melting chamber.