Apparatus for the direct reduction of iron ores

Details Apparatus for the direct reduction of iron ores Apparatus for the direct reduction of iron ores

1975-03-10

1977-04-26

Lake, Roy

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

By means recycling exhaust gas

266197, C22B 512

Patent

active

040197247

ABSTRACT:
A process and apparatus for the gaseous reduction of sized iron ores wherein a steam-hydrocarbon fluid mixture, having a steam:carbon molar ratio ranging from 0.9:1 to 1.8:1, is catalytically reformed to produce a reducing gas mixture containing about 85% to 98% by volume carbon monoxide plus hydrogen, with a hydrogen:carbon monoxide volume ratio of at least 2:1. The reducing gas is transferred directly at elevated temperatures to a shaft furnace for reduction of ores therein, and the spent reducing gas is cleaned, cooled and dried, for use as fuel and/or cooling the reduced ores.

REFERENCES:
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patent: 3020149 (1962-02-01), Old et al.
patent: 3119667 (1964-01-01), McMahon
patent: 3148050 (1964-09-01), Von Bogdandy
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patent: 3312634 (1967-04-01), Bernas et al.
patent: 3375098 (1968-03-01), Marshall
patent: 3379505 (1968-04-01), Holmes et al.
patent: 3764123 (1973-10-01), Beggs et al.
patent: 3767379 (1973-10-01), Marion

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