Method of manufacturing hot metal

Details Method of manufacturing hot metal Method of manufacturing hot metal

1978-03-08

1979-10-23

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 36, 75 38, C21B 1302

Patent

active

041719719

ABSTRACT:
A method of manufacturing hot metal from iron oxide in a shaft furnace by means of reduction with CO and H.sub.2 is described in the case of which iron oxide and coke are placed in the shaft furnace. For the purpose of the coke combustion, oxygen or a gas containing oxygen is introduced together with a reduction gas having a temperature ranging from approximately 1300.degree. to 1500.degree. C., comprising for the most part CO and H.sub.2 and introduced from the hot metal zone of fusion into the furnace shaft. The flue gas of the shaft furnace is purified at least partly, whereby a backflow gas comprising for the most part CO and H.sub.2 is formed and introduced back into the shaft furnace. This method is characterized by the fact that it is especially economical.

REFERENCES:
patent: 2894831 (1959-07-01), Old
patent: 3615351 (1971-10-01), Happel

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