Gas supply system for a metallurgical furnace and operating...

C - Chemistry – Metallurgy – 21 – C

Patent

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Details

C21C 5/34 (2006.01) C21C 5/35 (2006.01) C22B 9/05 (2006.01) F27D 3/16 (2006.01) C21C 5/48 (2006.01)

Patent

CA 2506333

The aim of the invention is to damp or suppress oscillations (<=back-attack>= effect) in sidewall or base blowing converters, used in particular to produce carbon steel or stainless steel. To achieve this, the gas supply system (3) for the converter comprises an inflow restrictor device (7), which is positioned upstream of or associated with the jets (5) and which periodically reduces or interrupts the gas supply to the interior of the furnace.

L'invention vise à amortir ou éliminer des vibrations (effet <= back-attack >=) sur des convertisseurs soufflant par le fond ou parles côtés, notamment destinés à la fabrication d'aciers au carbone ou d'aciers inoxydables. A cet effet, le système d'alimentation de gaz (3) selon l'invention, destiné au convertisseur, comporte un dispositif d'étranglement (7) de flux entrant, monté en amont des buses (5) ou associé à celles-ci, réduisant ou interrompant périodiquement l'alimentation de gaz à l'intérieur du four.

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