Method for the direct reduction of particulate iron-oxide-contai

Details Method for the direct reduction of particulate iron-oxide-contai Method for the direct reduction of particulate iron-oxide-contai

1986-04-29

1988-01-19

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 35, C21B 1302

Patent

active

047202998

ABSTRACT:
A method for the direct reduction of particulate iron-oxide-containing material. The method is carried out in a shaft furnace, wherein reformed gas from a reformer is fed as reducing gas to a reducing zone of the shaft furnace, the directly reduced ferrous particles are discharged from the shaft furnace and the top gas forming during reduction is extracted from the upper section of the shaft furnace. A hydrocarbon-containing gas is injected into the shaft furnace. Natural gas is separated into a first fraction enriched with low hydrocarbons and a second fraction enriched with higher hydrocarbons. The first fraction is conducted through the reformer and the second fraction is fed into the shaft furnace.

REFERENCES:
patent: 4046557 (1977-09-01), Beggs
patent: 4178170 (1979-12-01), Iacotti et al.
patent: 4439233 (1984-03-01), Faccone
patent: 4536213 (1985-08-01), Sanzenbacher

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