Method for producing hot sponge iron by introducing hydrocarbon

Details Method for producing hot sponge iron by introducing hydrocarbon Method for producing hot sponge iron by introducing hydrocarbon

1986-08-21

1989-05-30

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 91, C21B 1302

Patent

active

048347922

ABSTRACT:
A method and apparatus for the direct gaseous reduction of iron ore to sponge iron at an elevated temperature suitable for hot briquetting, wherein a hot reducing gas is circulated upwardly through a descending body of iron ore and a make-up reducing gas stream is added to the circulating gas stream. A sponge iron product having a predetermined desired degree of carburization in the range 0.5% to 4% is obtained by adding a controlled flow of natural gas or other methane-containing gas to said make-up gas stream or to said circulating gas stream.

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