Shaft furnace for direct reduction of ores

Details Shaft furnace for direct reduction of ores Shaft furnace for direct reduction of ores

F - Mech Eng,Light,Heat,Weapons

27

B

39/53

F27B 1/10 (2006.01) C21B 13/02 (2006.01)

Patent

CA 1081944

ABSTRACT OF THE DISCLOSURE A gravity feed shaft furnace for direct reduction of iron ores having substantially cylindrical reducing and cooling zones, an inwardly tapering discharge zone of a lipsoidal cross section, an elongated substantially cylidri- cal member disposed axially within the furnace extending upwardly through the discharge and cooling zones to terminate in the reducing zone, a conical top secured to the elongated member and configured to cause uniform downward solids flow, and means for introducing hot reducing gas and cooling gas into the elongated member. Means are provided for distributing the hot reducing gas into the center of the reducing zone, for distributing the cooling gas into the center of the cooling zone, and for causing part of the cooling gas to cool the hot reducing gas distribution means. -1-

288204

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