Process and device for increasing the useful life of gas scaveng

Details Process and device for increasing the useful life of gas scaveng Process and device for increasing the useful life of gas scaveng

1979-06-08

1981-04-28

Rosenberg, P. D.

Metallurgical apparatus

Process

Cooling

C21B 710

Patent

active

042640571

ABSTRACT:
The useful life is increased of gas scavenging lances having porous graphite flush heads for non-ferrous metal melts by flowing an inert gas, immediately after scavenging, through the lance in a de-energizing cage which surrounds the graphite parts of the lance while forming a narrow gap therewith until a temperature below the ignition temperature of graphite is obtained.

REFERENCES:
patent: 3112194 (1963-11-01), DeVries
patent: 3269829 (1966-08-01), Belkin
patent: 3304173 (1967-02-01), Smith
patent: 3330645 (1967-07-01), DeMoustier
patent: 3932172 (1976-01-01), Knuppel

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