Process for the production of a bath of molten metal or alloys

Details Process for the production of a bath of molten metal or alloys Process for the production of a bath of molten metal or alloys

1987-07-24

1989-02-21

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

C22B 900

Patent

active

048061565

ABSTRACT:
Liquid argon, nitrogen or carbon dioxide is poured onto the surface of a bath of molten metal in a furnace.
According to the invention, liquefied gas is discharged onto the surface in an amount which ranges from about 0.025 to 0.060 lb/cu. in. of metal in the furnace, while a skirt is preferably set around the open end of said furnace.
Oxygen concentration above the bath remains lower than about 3.0%, while hydrogen and nitrogen pick up are reduced.

REFERENCES:
patent: 3400752 (1968-09-01), Unsworth
patent: 3868987 (1975-03-01), Galey
patent: 4089678 (1978-05-01), Hanawalt
patent: 4093553 (1975-03-01), Galey
patent: 4178980 (1979-12-01), Gilbert
patent: 4181522 (1980-01-01), Galey
patent: 4211269 (1980-08-01), Bentz
patent: 4460409 (1984-07-01), Devalois
patent: 4657587 (1987-04-01), Savard

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