Method and apparatus for producing metallic iron pellets

Details Method and apparatus for producing metallic iron pellets Method and apparatus for producing metallic iron pellets

1975-05-19

1977-08-16

Lake, Roy

Metallurgical apparatus

With control means responsive to sensed condition

With temperature sensor

266155, 266156, 266187, 266197, F27B 900

Patent

active

040422267

ABSTRACT:
A method of producing metallic iron pellets in a generally vertical furnace in which a gravitational flow of particulate material is reduced in a reducing zone by a countercurrent flow of a reducing gas containing a reductant, the spent reducing gas is removed and cooled and a portion is introduced as a cooling gas in a cooling zone near the bottom of the furnace while a second portion is employed as a fuel to heat a catalyst through which a gaseous hydrocarbon and steam are passed to form a reducing gas mixture for introduction into the furnace, and a portion of the cooling gas is upgraded in reducing potential and introduced to the reducing zone as reducing gas. Apparatus is also provided for carrying out the method.

REFERENCES:
patent: 2860046 (1958-11-01), Edstrom et al.
patent: 3764123 (1973-10-01), Beggs et al.
patent: 3767389 (1973-10-01), Marion

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