SMELTING REDUCTION METHOD FOR METALLIC OXIDE AND SMELTING REDUCTION FURNACE

PURPOSE:To execute smelting reduction with good productivity by arranging lances at side wall of a top and bottom blowing type converter reacting vessel at the time of smelting reduction of metallic oxide in the above vessel to blow oxidizing gas on slag layer and also stirring molten metal by low frequency induction heating. CONSTITUTION:Carbonic solid fuel is charged on the bath surface of the molten metal charged in the top and bottom blowing type converter reacting vessel and the oxidizing gas is blown from the top blowing lance 3, to executed the smelting reduction of the metallic oxide. Then, the vessel body is constituted so as to able to divide it into tow of upper part 2a and lower part 2b of the furnace body at existing position of the contents, and the side blowing lance 4 is arranged at the position of the slag layer 6 in the side wall of the upper part 2a of furnace body to blow the oxidizing gas. Further, the low frequency induction heating apparatus 8 is set in the lower part 2b of furnace body and the molten metal 5, which exists at the lower part 2b of furnace, body, is heated by the induction current and at the same time, stirred. By this method, the lowering of molten 5 temp. is prevented, and heat transfer from molten slag 6 to the molten metal 5 is promoted, and the smelting reduction is executed with good productivity.