| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for melting a cold iron source by a combined arc melting furnace for the cold iron source which can effectively utilize exhaust gas generated in a combined arc melting furnace for pre-heating of the cold iron source without causing oxidation of the cold iron source, can reform the exhaust gas and reduce the electric power consumption rate, when melting the cold iron source in the combined arc melting furnace, and to provide the combined arc melting furnace. <P>SOLUTION: In the method for melting the cold iron source using the combined arc melting furnace comprising a melting chamber and a shaft-type pre-heating chamber which is vertically provided on the upper part thereof and communicates to the melting chamber, the cold iron source successively lowers inside of a pre-heating chamber, is pre-heated by using a high temperature exhaust gas generated in a combined arc melting furnace to arc melt and is continuously introduced into the melting chamber, where an ammonia gas is blown into the pre-heating chamber under conditions wherein the cold iron source is present striding over the pre-heating chamber and the upper part in the melting chamber. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
