Method for rapid reduction of iron oxide in a rotary hearth furn

Details Method for rapid reduction of iron oxide in a rotary hearth furn Method for rapid reduction of iron oxide in a rotary hearth furn

1994-12-16

1998-03-24

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75484, 75485, C21B 1314

Patent

active

057307750

ABSTRACT:
A method and apparatus for producing direct reduced iron from dry compacts composed of iron oxide and carbonaceous material by feeding compacts no more than two layers deep onto a hearth and removing all the volatiles and metallizing the compacts by exposing said compacts to a radiant heat source at a temperature of from about 2400.degree. to about 2600.degree. F (1316.degree.-1427.degree. C.) for a total time period of about four to ten minutes and partially cooling the compacts while discharging them from the hearth.

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patent: 5186741 (1993-02-01), Kotraba et al.
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