Patent ID: 6015527
Filing Date: 2000-01-18
Classification: C21B,C22B,Y02P

Abstract:
A facility for production of reduced iron, comprising:a mixer for mixing fine iron oxides with powdery solid reductants;a compactor for compacting a raw material mixture obtained through the mixing step into a sheet-like compact;a feeder for placing the sheet-like compact on the hearth of the reduction furnace; anda reduction furnace for reducing the iron oxides contained in the sheet-like compact fed therein, said reduction furnace being a rotary hearth furnace and comprising:a furnace body provided with a feeding inlet for the sheet-like compacts, a discharge outlet for the reduced iron produced through high temperature reduction of the iron oxides, and an exhaust outlet for off-gas generated therein,a hearth installed therein so as to be horizontally rotatable, andburners for combusting the fuel after the fuel and the oxygen-containing gas are blown in,wherein the compactor is a double-roll compactor disposed above the hearth such that axes of the double rolls intersect the direction of advance of the hearth at right angles, and the feeder of the sheet-like compact is a feeder chute.