Method for the direct reduction of iron using gas from coal

Details Method for the direct reduction of iron using gas from coal Method for the direct reduction of iron using gas from coal

1978-08-15

1979-11-06

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 91, C21B 1302

Patent

active

041734653

ABSTRACT:
A method for direct reduction of iron in a shaft reduction furnace. Spent gas from the furnace is upgraded in reductant by removal of CO.sub.2 and water to form an upgraded gas. A fossil fuel is gasified to produce a hot gas which is tempered with a first stream of upgraded gas. The mixture is desulfurized by reaction with lime to produce hot desulfurized gas. A second stream of upgraded gas is heated and mixed with the hot desulfurized gas to produce hot reducing gas.

REFERENCES:
patent: 3853538 (1974-12-01), Nemeth
patent: 4040816 (1977-08-01), Altenhoner et al.
patent: 4046555 (1977-09-01), Lange

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