Method for carburizing sponge iron

Details Method for carburizing sponge iron Method for carburizing sponge iron

1979-08-20

1980-09-23

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

148 165, 266 81, C21B 1302

Patent

active

042240573

ABSTRACT:
Sponge iron is carburized in the cooling zone of a vertical shaft iron ore reduction reactor by causing a carbon-containing gas to circulate in a closed loop including the cooling zone of the reactor and an external conduit containing a quench cooler and a pump. Improved control of the carburization of the sponge iron is achieved by measuring the specific gravity of the circulating gas and using the measured specific gravity value as a control variable effectively to regulate the flow of make-up carbon-containing gas to the cooling loop.

REFERENCES:
patent: 2873183 (1959-02-01), Pike
patent: 3189438 (1965-06-01), Von Bogdandy
patent: 3369888 (1968-02-01), Cruse, Jr.
patent: 3375098 (1968-03-01), Marshall
patent: 3551138 (1970-12-01), Brown et al.
patent: 3765872 (1973-10-01), Celada et al.
patent: 3782920 (1974-01-01), Anthes et al.
patent: 4046557 (1977-09-01), Beggs
patent: 4049440 (1977-09-01), Beggs
patent: 4054444 (1977-10-01), Clark et al.

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