Manufacturing method of molten iron using an electric furnace

摘要

In a method of producing molten iron by melting a cold iron source in an electric furnace equipped with a charcoal material blowing device, a method of efficiently blowing the charcoal material into the molten iron without impairing safety is provided. In the carbon material blowing device, the carbon material a is injected from the central portion by the transport gas, the fuel b and the combustible gas c are injected from the outer peripheral portion thereof, and the carbon material a injected from the central portion is injected. It passes through the tubular combustion flame formed by the combustion reaction of the fuel b and the combustible gas c so as to be blown into the molten slag and the molten iron. Since the carbonaceous material a flowing in the tubular combustion flame is not affected by the surrounding gas flow, the flow velocity does not decrease and the high flow velocity can be maintained, so that the carbonaceous material a maintains a high inertial force. It can be separated from the transport gas as it is and reach / enter the molten slag and molten iron.