EP 0419378 B1 19940406 - Apparatus for treating a static aluminium bath of large surface area using gases.
Title (en)
Apparatus for treating a static aluminium bath of large surface area using gases.
Title (de)
Begasungsvorrichtung für ein stationäres Aluminium-Schmelzbad mit grosser Oberfläche.
Title (fr)
Dispositif de traitement au moyen de gaz d'un bain liquide d'aluminium de grande surface maintenu à l'état stationnaire dans un four.
Publication
Application
Priority
FR 8912540 A 19890920
Abstract (en)
[origin: US5028035A] An apparatus for gas treatment for a bath of liquid aluminum at rest in a furnace having a roof and in which the bath has a surface area of at least 10 m2. The apparatus comprises a movable gantry placed over the furnace and from which are suspended at least three gas injector assemblies which are more than 2 m long each. The injector assemblies are partially immersed in the bath through openings in the roof of the furnace and the immersed parts are separated from each other solely by the bath. The assemblies each comprise a rotary shaft having a rotor at its lower end joined to a plurality of blades. Through the axis of the shaft there is a cavity which opens above the furnace and which communicates at its lower end with passages in the blades. Means are provided above the furnace for rotating the shafts and for connecting the cavities to a source of treating gas. Each shaft is enclosed by a stator which extends from a point above the roof downwardly to a point close to the upper surface of the rotor to provide a space between the rotor and the stator which is adapted to be filled with the bath and to serve as a shock absorber.
IPC 1-7
IPC 8 full level
C22B 9/05 (2006.01); C22B 21/06 (2006.01); F27D 3/16 (2006.01); F27D 27/00 (2010.01)
CPC (source: EP US)
C22B 9/05 (2013.01 - EP US); C22B 21/064 (2013.01 - EP US); F27D 3/16 (2013.01 - EP US); F27D 27/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0419378 A1 19910327; EP 0419378 B1 19940406; AT E103992 T1 19940415; AU 621531 B2 19920312; AU 6230390 A 19910328; CA 2023753 A1 19910321; CA 2023753 C 19971007; DE 69007921 D1 19940511; DE 69007921 T2 19941006; ES 2050989 T3 19940601; FR 2652018 A1 19910322; FR 2652018 B1 19940325; NO 176925 B 19950313; NO 176925 C 19950621; NO 903464 D0 19900807; NO 903464 L 19910321; US 5028035 A 19910702
DOCDB simple family (application)
EP 90420406 A 19900917; AT 90420406 T 19900917; AU 6230390 A 19900907; CA 2023753 A 19900823; DE 69007921 T 19900917; ES 90420406 T 19900917; FR 8912540 A 19890920; NO 903464 A 19900807; US 55190590 A 19900713