| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a steel making method in which fluorite to be used as a main supply source of fluorine is not used when scraps such as refuse iron and refuse stainless steel, nickel, ferrochromium and other nickel-containing raw materials as raw material of stainless steel, Fe-Ni alloy steel and Ni-based alloy are melted in an electric furnace (in the case of steel refining in which the operation of low alkalinity is requested), and the melting point, the viscosity and the discharging property of the slag equivalent to those when fluorite is used can be maintained. <P>SOLUTION: When refining steel by the electric furnace, the fluorite-less slag-making agent consisting of one or two or more kinds of lime, refuse refractory, and aluminum or aluminum oxide containing substance is used, and the oxidizing heat of Al and Si is used as a part of the melting heat source. <P>COPYRIGHT: (C)2003,JPO</p> |
