Patent ID: 6569223
Filing Date: 2003-05-27
Classification: C21B,F27B,F27D,Y02P

Abstract:
A method of manufacturing a molten metal iron comprising the following steps:charging a starting material at least comprising a carbonaceous reducing material and an iron oxide-containing material into a rotary hearth furnace, reducing under heating the charged starting material into a solid reducing iron, carburizing the metal iron in the solid reduced iron with the carbon ingredient in the carbonaceous reducing material, thereby melting the metal iron, separating the slag ingredient contained in the starting material by the melting, and discharging the molten metal iron in the molten state as it is at a discharging position for the molten metal iron to the outside of the rotary hearth furnace for recovery, by disposing a downward inclined surface at an angle of by 3 to 30Â° relative to the horizontal plane on the upper surface of the hearth of the rotary hearth furnace on which the starting material is placed.