Method for increasing metallic yield in bottom blown processes

Details Method for increasing metallic yield in bottom blown processes Method for increasing metallic yield in bottom blown processes

1974-08-30

1976-01-06

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 59, C21C 534

Patent

active

039308430

ABSTRACT:
In the Q-BOP process for the production of low carbon steels (eg. 0.02 - 0.05% C), inert gas-oxygen mixtures are employed during the latter part of the blow, i.e. when the C content of the melt reaches a level of about 0.25%. As such lower carbon contents, the rate of decarburization is not decreased by dilution of the oxygen with inert gas. However, such dilution results in less O.sub.2 being available for oxidation of iron, hence significant increases in metallic yield may be achieved. By precise control of the O.sub.2 /inert gas ratio, increases in metallic yield in excess of 2% are achieved.

REFERENCES:
patent: 3046107 (1962-07-01), Nelson
patent: 3706549 (1972-12-01), Knuppel
patent: 3725041 (1973-04-01), Ramachandran

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