Apparatus for the direct reduction of iron and production of fue

Details Apparatus for the direct reduction of iron and production of fue Apparatus for the direct reduction of iron and production of fue

1979-09-24

1980-11-18

Andrews, M. J.

Metallurgical apparatus

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

By means recycling exhaust gas

266197, F27B 108

Patent

active

042341698

ABSTRACT:
Apparatus for the direct reduction of iron and production of fuel gas in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide rich 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, a minor portion of the spent reducing gas is recycled as tempering gas for the gas from the hot gasifier, and the major portion of spent reducing gas becomes a source of fuel gas. The apparatus includes a gasifier, counterflow shaft gas reactor, a shaft type direct reduction furnace and associated equipment.

REFERENCES:
patent: 4062529 (1977-12-01), Altenhoner et al.
patent: 4098496 (1978-07-01), Lange

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