Direct reduction process for producing reduced iron

Details Direct reduction process for producing reduced iron Direct reduction process for producing reduced iron

1979-03-29

1981-05-19

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 35, C21B 1302

Patent

active

042683033

ABSTRACT:
The present invention discloses a direct reduction process for producing reduced iron by reducing iron ores and/or pellets with reducing gases, wherein the iron ores and/or pellets are reduced to a degree of reduction of 30-80% by a reducing gas containing 15-40% by volume of methane at a temperature of more than 950.degree. C. and further reduced by a reducing gas containing high proportion of carbon monoxide and/or hydrogen at a temperature of below 1000.degree. C.

REFERENCES:
patent: 4054444 (1977-10-01), Clark
patent: 4099963 (1978-07-01), MacKay

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