Telescoping device for unplugging a vessel discharge port

Details Telescoping device for unplugging a vessel discharge port Telescoping device for unplugging a vessel discharge port

1988-05-17

1989-10-31

Kastler, S.

Dispensing

Molten metal dispensing

222603, 266271, C21C 548

Patent

active

048771619

ABSTRACT:
An apparatus for unplugging a vessel discharge port, for example, in a refractory lined ladle or tundish used in the casting of molten steel. The unplugging apparatus is adapted to be placed directly below the plugged discharge port within an axial bore of a refractory pouring tube such as a ladle shroud or like pouring nozzle. The apparatus includes a tubular housing having an axially displaceable tube disposed within the interior of the tube having an upper end disposed above the housing and an open lower end disposed within the housing. A conduit communicates with the interior of the tube at one end and is adapted to communicate with a source of pressurized gas, such as oxygen at the other end. In use, the pressurized gas raises the axially displaceable tube to emit the gas and cause burning in the vicinity of the plugged discharge port. A plurality of radially extending centering members are disposed on the tubular housing for axially aligning the housing relative to the bore of the refractory pouring tube and the discharge port.

REFERENCES:
patent: 3201225 (1963-10-01), Haynes
patent: 3743139 (1973-07-01), Lyman
patent: 3770200 (1973-11-01), Bauer et al.
patent: 3794218 (1974-02-01), Yanagida et al.
patent: 4202533 (1980-05-01), Daussan et al.
patent: 4450986 (1984-05-01), Harasym et al.
patent: 4746037 (1988-05-01), Harasym

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