Slab cleaning in front of the roller hearth furnace of a...

B - Operations – Transporting – 21 – B

Patent

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Details

B21B 45/08 (2006.01) B21B 1/46 (2006.01) B21B 45/00 (2006.01)

Patent

CA 2459881

The invention relates to a device for removing loose cinder from the surface of a slab, especially a thin slab of a mini mill. One such mini mill comprises at least one slab casting machine, a slab separating device, a thermal compensation furnace and at least one roll stand comprising a reeling installation. The inventive device is improved in that a spray device (11) comprises at least one lower spray pipe (2) and at least one upper spray pipe (3) in relation to the slab (1), each spray pipe being fitted with a number of spray nozzles (4). Said spray device (11) is arranged in front of the roller hearth furnace (5) of the mini mill and is connected to a water supply (6) having the technologically required pressure and a volume flow which is adapted to the number of spray nozzles (4). The invention also relates to an operating method for the spray device (11).

L'invention concerne un dispositif pour enlever la calamine meuble de la surface d'une brame, notamment d'une brame mince d'une mini-aciérie. Une telle mini-aciérie comprend au moins une machine à couler des brames, un dispositif pour séparer les brames, un four de compensation thermique et une ou plusieurs cages de laminoir avec enrouleuse. Pour perfectionner un tel équipement, un dispositif de pulvérisation (11) comprend au moins un tuyau de projection (2) inférieur et au moins un tuyau de projection (3) supérieur relativement à la brame (1), chaque tuyau de projection étant pourvu d'une pluralité de gicleurs (4). Situé en amont du four à rouleaux (5) de la mini-aciérie, le dispositif de pulvérisation (11) est raccordé à une alimentation (6) en eau amenée avec la pression techniquement nécessaire et à un débit volumétrique proportionnel au nombre de gicleurs (4). La présente invention porte également sur un procédé pour faire fonctionner ce dispositif de pulvérisation (11).

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