| 摘要 |
PURPOSE:To produce green pellet for burnt agglomerated ore having excellent characteristic by making the green pellet in a disk-type pelletizer while adding water, after mixing a drum mixer while adding flux to the powdery iron ore and further coating the green pellet with powdery coke using a drum-type pelletizer. CONSTITUTION:At the time of producing by burning the burnt agglomerated ore as the raw material for blast furnace or the raw material for directly reducing iron-making by an endlessly moving grate type burning furnace, at least one kind of material or more among lime, slaked lime, limestone, bentonite, dolomite, water granulated blast furnace slag are added as flux to the iron ore having <=8mm grain size, so that CaO/SiO2 value for the burnt agglomerated ore becomes 1.0-2.5 and after kneading together with water by the drum mixer 1, it is pelletized into green pellet having 3-13mm grain size by the disk-type pelletizer 2. Next, this is charged together with 2.5-4.0wt% of powdery coke into the drum-type pelletizer 3, to coat powdery coke on the surface of pelletized green pellet. By using this as the raw material, the burnt agglomerated ore is produced under high yield and high productivity.
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