METHOD FOR PRODUCING AGGLOMERATE INCLUDING CARBONACEOUS MATERIAL FOR IRON-MAKING PROCESS

摘要

PPROBLEM TO BE SOLVED: To provide a method for producing an agglomerate including a carbonaceous material for an iron-making process, which has high strength even when employing the carbonaceous material with low softening flowability, and promotes a reductive reaction even without separately adding a reducing agent during the iron-making process. PSOLUTION: The method for producing the agglomerate including the carbonaceous material for the iron-making process comprises: mixing a composition for the agglomerate including the raw material of iron oxide and the carbonaceous material at a temperature for the carbonaceous material to start softening or lower; then mixing the composition with a softening flowability accelerator which is in a solid state or a semisolid state when the above composition is mixed and is in a liquid state when the mixture would be compacted later at a temperature in which the carbonaceous material is in between (maximum fluidity temperature-30C) and (maximum fluidity temperature+30C), while controlling a ratio (a mass ratio) of the carbonaceous material and the softening flowability accelerator with respect to the raw material of iron oxide, to a range expressed by an expression (1); (carbonaceous material + softening flowability accelerator) : the raw material of iron oxide = 15 to 25 : 85 to 75; and then compacting the mixture at the above described temperature. PCOPYRIGHT: (C)2006,JPO&NCIPI