Shaft furnace for direct reduction of ores

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

1976-10-15

1977-06-28

Dost, Gerald A.

Metallurgical apparatus

Means for treating ores or for extracting metals

By means applying heat to work, e.g., furnace

266197, C21B 1100

Patent

active

040321231

ABSTRACT:
A gravity feed shaft furnace for direct reduction of iron ores having substantially cylindrical reducing and cooling zones, an inwardly tapering discharge zone of ellipsoidal cross section, an elongated substantially cylindrical 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.

REFERENCES:
patent: 196056 (1877-10-01), Taylor
patent: 3063695 (1962-11-01), De Vaney

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