| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a melting method of scrap having carburizing function for melting the scrap with an electric furnace or a top-blown oxygen melting furnace which restrains the use of coke having a low yield by carburizing the scrap oxidized and melted and can improve the yield of the iron source and reduced the unit requirements of electric power, C and CaO by restraining the generation of CO2 gas, and a melting furnace thereof. SOLUTION: In the melting method of the scrap with the electric furnace or the top-blown oxygen melting furnace 1, the scrap is reduced by blowing H2 S/H2 gas from a tuyere 6 arranged at either of the bottom part of a preheating furnace 4 between the preheating furnace and the electric furnace or the top-blown oxygen melting furnace, the electric furnace or the top-blown oxygen melting furnace under condition of holding reducing atmosphere at a part or over the whole of the melting period. Further, while supplying the electric power or while feeding the oxygen to the scrap executing the carburizing, the scrap is melted.</p> |
