To provide a method for producing a reduced iron with which the collapse and the powdering of a pellet in the heating furnace is produced and the product reduced iron having high dezincificating rate and high metallizing rate can be produced at a high yield when the pellet containing wet dust of blast furnace is heated and reduced in the heating furnace to obtain the reduced iron.
The additional ratio of the other powdery raw material containing iron oxide and/or carbon into the wet dust of the blast furnace, is adjusted and mixed raw material is prepared so that an excessive carbon rate SC satisfies the formula: Sc≤8-2NL+0.02YD. Wherein, SC=XC-(12/16)XO, NL: average number of layers of the pellet laid on the furnace hearth, YD =100XC'B/XC. Then, XC: mass% of carbon in the pellet, XO: total mass% of oxygen in the iron oxide and zinc oxide in the pellet, XC'B: mass% of carbon contained in the other powdery raw material in the pellet.
MATSUI YOSHIYUKI
SUGIYAMA TAKESHI
HARADA TAKAO
TETSUMOTO MASAHIKO
TAMAZAWA HIROSHI
