Nozzle for an oxygen injection lance for decarburization of pig

Details Nozzle for an oxygen injection lance for decarburization of pig Nozzle for an oxygen injection lance for decarburization of pig

1981-08-14

1984-06-19

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266225, 266265, 266266, 266217, 239589, C21C 532

Patent

active

044551665

ABSTRACT:
A nozzle is disclosed for use in the decarburization of molten pig iron by means of a jet of oxygen from a lance provided with such nozzle. The nozzle according to the invention is characterized by a divergent portion which, beyond the neck, has a frustoconical part, with an apex angle of between 60.degree. and 70.degree. and preferably between 62.degree. and 66.degree., and wherein an angle of 65.degree. is preferred. The nozzle according to the invention can be used in particular for the decarburization of chromium containing pig iron and makes it possible to achieve very high chromium and iron yields.

REFERENCES:
patent: 2175160 (1939-10-01), Zobel et al.
patent: 3876190 (1975-04-01), Johnstone et al.
patent: 3957258 (1976-05-01), Carlomagno et al.
patent: 4324584 (1982-04-01), Marizy

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