Apparatus for the direct reduction of iron using gas from coal

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

1978-08-15

1980-06-03

Andrews, M. J.

Metallurgical apparatus

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

By means recycling exhaust gas

266186, 266195, 266197, F27B 124

Patent

active

042058309

ABSTRACT:
A method and apparatus for the direct reduction of iron in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide lean gas. The mixture is reacted with carbon to upgrade it in reducing potential and is desulfurized by reaction with lime in a first shaft furnace to form a hot reducing gas. The hot reducing gas is utilized as the reductant in a counterflow shaft reduction furnace and the spent reducing gas is recycled as tempering gas for the gas from the hot gasifier. The apparatus includes a gasifier, counterflow shaft gas reactor, a shaft type direct reduction furnace and associated equipment.

REFERENCES:
patent: 3853538 (1974-12-01), Nemeth

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