Method of operating a blast furnace using coal auxiliary combust

Details Method of operating a blast furnace using coal auxiliary combust Method of operating a blast furnace using coal auxiliary combust

1975-12-05

1976-06-29

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C21B 500

Patent

active

039664570

ABSTRACT:
Coal of a granulometry of 0.1 to 20 mm is injected into the blast-pipe manifold surrounding an iron-smelting blast furnace. The temperature of between 900.degree.C and 1300.degree.C in this manifold thermally disintegrates the coal by vaporizing volatile components such as water in the coal and reduces the coal to a mesh size of at most 1 mm. The fine particles of coal so produced are blown into the blast furnace through the tuyeres.

REFERENCES:
patent: 3301544 (1967-01-01), Eft
patent: 3318686 (1967-05-01), Schulte
patent: 3720351 (1973-03-01), Coulter et al.

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