Direct reduction reactor with hot discharge

Details Direct reduction reactor with hot discharge Direct reduction reactor with hot discharge

1985-09-23

1988-03-29

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21B 1302

Patent

active

047341289

ABSTRACT:
A method is disclosed for the gaseous reduction of iron ore to sponge iron at a given degree of carburization and yet at a temperature suitable for hot briquetting or for direct feed to a melter or to a refining furnace. The desired percentage of carburization and the preferred elevated temperature are achieved by using a hot blend of recycled reducing gas and essentially uncracked natural gas or methane to carburize and to decrease the temperature of the sponge iron in the cooling zone of the reactor.

REFERENCES:
patent: 3375099 (1968-03-01), Marshall
patent: 3392008 (1968-07-01), Wald
patent: 4002422 (1977-01-01), Ecott
patent: 4054444 (1977-10-01), Clark et al.
patent: 4224057 (1980-09-01), Martinez-Vera et al.
patent: 4270739 (1980-10-01), Ahrendt et al.

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