Method for the batchwise reduction of metal ores

Details Method for the batchwise reduction of metal ores Method for the batchwise reduction of metal ores

1976-06-16

1978-07-11

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 91, C21B 1302

Patent

active

040999637

ABSTRACT:
An improvement in a method for the batchwise gaseous reduction of iron ore to sponge iron in a multiple unit reactor system including a cooling reactor and at least one reduction reactor. Reduction is effected with a gas composed largely of carbon monoxide and hydrogen which may be, for example, generated by reforming a mixture of steam and natural gas or other gaseous hydrocarbons at an elevated temperature. The reducing gas requirement of the system is decreased by adding to the gas fed to one or more of the reduction reactors a minor amount of a hydrocarbon gas or vapor, e.g., natural gas, methane or a combination of methane and recycled spent reducing gas.

REFERENCES:
patent: 3827879 (1974-08-01), Celada et al.
patent: 3904397 (1975-09-01), Celada et al.

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