Metallurgical apparatus – Process
Patent
1987-09-30
1989-07-18
McDowell, Robert
Metallurgical apparatus
Process
266207, 266225, 266270, 266220, C21C 700
Patent
active
048487511
ABSTRACT:
Liquid argon or nitrogen is poured with a lance into a furnace during the production of molten metal.
According to the invention, the lance comprises a double wall in which a hole is respectively located in order to vent the argon or nitrogen gas to reduce the rate of diphasic. The tip of the lance is equipped with a diffuser to improve the liquid discharge.
REFERENCES:
patent: 3400752 (1968-09-01), Unsworth
patent: 4089678 (1978-05-01), Hanawalt
patent: 4236913 (1980-12-01), Austin
patent: 4657587 (1987-04-01), Savard et al.
French Research Disclosure No. 26063, Dec., 1985.
Japanese Abstract No. 60-61148, Apr., 1985, vol. 9, No. 198, Aug. 15, 1985.
Hornby-Anderson Sara
Lutgen Noel F.
L'Air Liquide
McDowell Robert
Robinson, Jr. Lee C.
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