Submerged arc furnace with vertically movable frame

Details Submerged arc furnace with vertically movable frame Submerged arc furnace with vertically movable frame

H - Electricity

05

B

H05B 7/12 (2006.01) F27B 3/08 (2006.01) C21C 5/52 (2006.01)

Patent

CA 2178613

The invention relates to a submerged arc furnace with open slag bath, in particular for melting powdery and fine-grained batches, having a vertically movable frame which is arranged above the furnace, closed by a cover, and on which an electrode mount and an electrode filling device are arranged. According to the invention, the reduction furnace is defined by the provision of a platform (31) on which the frame (43) is supported via at least three regulating cylinders (41), and by the platform (31), arranged above the furnace cover (12), being configured as a maintenance platform on which, for each electrode (71-73), there is provided a sealing unit (20) which has components (21, 23) for the horizontal and vertical sealing of the free surfaces between the electrodes and the electrode passage openings (13) of the cover (12).

Un four à arc submergé et à bain ouvert de laitier, notamment pour fondre un lit de fusion pulvérulent ou à grains fins, comprend un cadre mobile en hauteur monté au-dessus du four fermé par un couvercle. Un châssis-support d'électrodes et un dispositif de recharge d'électrodes sont montés sur le châssis-support. Le four à arc submergé se caractérise en ce qu'une plate-forme (31) monté au-dessus du couvercle du four sert de plate-forme d'entretien et soutient le cadre (43) sur au moins trois cylindres de réglage (41). Une unité d'étanchéité (20) par électrode (71-73) est monté sur la plate-forme d'entretien (31). Les unités d'étanchéité (20) comprennent des éléments (21, 23) assurant l'étanchéité horizontale et verticale des surfaces libres entre les électrodes et les orifices (13) de passage des électrodes ménagés dans le couvercle (12).

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