Global Patent Index - EP 0772695 B1

EP 0772695 B1 2000-02-09 - GAS FLUSHING DEVICE IN THE BLOWPIPE OF A VACUUM DEGASSING VESSEL

Title (en)

GAS FLUSHING DEVICE IN THE BLOWPIPE OF A VACUUM DEGASSING VESSEL

Title (de)

GASSPÜLEINRICHTUNG IM RÜSSEL EINES VAKUUM-ENTGASUNGSGEFÄSSES

Title (fr)

DISPOSITIF DE RIN AGE PAR GAZ MONTE DANS LE TUYAU DE SOUFFLAGE D'UNE CUVE DE DEGAZAGE SOUS VIDE

Publication

EP 0772695 B1 (DE)

Application

EP 95928468 A

Priority

  • DE 4426368 A
  • DE 29512335 U
  • EP 9502956 W

Abstract (en)

[origin: WO9603530A1] The invention concerns a gas flushing device for a blowpipe (10, 12) of a degassing vessel, the blowpipe being cladded with a fire-resistant material. The proposed gas flushing device has a plurality of channels (20, 22) which are distributed around the circumference of the blowpipe (10, 12) and pass through the fire-resistant cladding (14) radially in relation to the central longitudinal axis (M) of the blowpipe (10, 12) and can be connected on the outside to at least one gas feed pipe. The channels (20, 22) (a) are between 0.5 and 2 mm in diameter; (b) are spaced at intervals of less than 10 cm; (c) can be pressurized with gas in such a way that the gas on entering the blowpipe (10, 12) rises in the immediate vicinity of the blowpipe inner wall.

IPC 1-7 (main, further and additional classification)

C21C 7/10

IPC 8 full level (invention and additional information)

B22D 1/00 (2006.01); C21C 7/10 (2006.01)

CPC (invention and additional information)

C21C 7/10 (2013.01); B22D 1/005 (2013.01)

Designated contracting state (EPC)

ES FR GB IT

DOCDB simple family

WO 9603530 A1 19960208; AU 3221895 A 19960222; EP 0772695 A1 19970514; EP 0772695 B1 20000209; ES 2143647 T3 20000516; US 5853658 A 19981229