| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing an agglomerate for the raw material for a blast furnace, in which an agglomerate for the raw material for a blast furnace having high strength can be produced even if coal having low softening-melting properties or hardly having softening-melting properties and high crystallization water-containing iron ore are combinedly used. <P>SOLUTION: Powdery coal A having the maximum fluidity MF of 0.3 to 2.5 by log Mf, containing a volatile matter VM of≥10 mass% and containing≥0.3 mass% sulfur S and powdery iron ore B containing crystallization water LOI of≥3 mass% are subjected to cold mixing by a mixer 1 to be a mixed raw material C, thereafter, the mixed raw material C is dried at≤180°C by a drier 2, further, the dried raw material C' is heated at 350 to 550°C by a heating device 3, the heated raw material C'' is hot-molded by a hot molding machine 4 to produce a molding D, and the molding D is subjected to heating treatment at 560 to 750°C for≥10 min in an inert gas atmosphere by a heat treatment device 5 to produce an agglomerate E for the raw material for a blast furnace. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
