Method for the direct reduction of iron and production of fuel g

Details Method for the direct reduction of iron and production of fuel g Method for the direct reduction of iron and production of fuel g

1978-12-07

1980-05-06

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

48197R, 48210, 423230, 423415R, C21B 1302

Patent

active

042015715

ABSTRACT:
A method 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.

REFERENCES:
patent: 3853538 (1974-12-01), Nemeth
patent: 4017305 (1977-04-01), Waslo

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