Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-01-05
1978-07-11
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 35, C22B 110
Patent
active
040999629
ABSTRACT:
A method and apparatus for measuring and controlling the percentage reduction of iron ore in a vertical shaft, moving bed, gaseous reduction reactor. Reducing gas comprising hydrogen, methane, carbon monoxide and carbon dioxide is fed from a source of such gas to the bottom of the reduction zone of the reactor and is heated to an elevated temperature before being introduced into the reactor. The flow and composition of the reducing gas are determined at a first location before the gas enters the reactor. The effluent gas from the reactor is cooled and its flow and composition determined at a second location after the gas has been cooled. The measured flows and compositions are correlated with the rate of sponge iron production to obtain a measurement of percentage reduction of the ore and this measurement is used, either manually or automatically, to regulate the rate of removal of sponge iron from the reactor to maintain the percentage reduction at a predetermined desired value.
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DE LA Pena Ramon
MacKay Patrick W.
Vera Enrique Martinez
Grupo Industrial Alfa, S.A.
Rosenberg P. D.
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