Process for batch production of sponge iron

Details Process for batch production of sponge iron Process for batch production of sponge iron

1975-05-05

1976-06-22

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 35, C22D 704

Patent

active

039648982

ABSTRACT:
Sponge iron is produced by a process including a charging step during which an iron oxide is arranged as a stationary bed in a furnace chamber, a heating step during which a hot, preferably non-reducing atmosphere is cased to flow through the stationary bed, and a reduction step during which a hot reducing atmosphere is caused to flow through the stationary bed to reduce the iron oxide to sponge iron. Optionally, there is a final cooling step during which cold non-oxidizing atmosphere cools the sponge iron. The relatively hot atmosphere which has just passed through the stationary bed is counter-currently heat exchanged with the relatively cool fresh atmosphere about to enter the furnace chamber.

REFERENCES:
patent: 3032410 (1962-05-01), O'Day
patent: 3098738 (1963-07-01), Madaras
patent: 3148050 (1964-09-01), Von Bogdandy

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