METHOD OF AND EQUIPMENT FOR PRETREATING MATERIAL THAT IS FED INTO A SMELTING FURNACE

The invention relates to a method of and equipment for pre-treating material that is fed into a smelting furnace (2), such as an electric furnace, whereby the feed material is directed to a preheating system (1) comprising several separate preheating silos (3), each containing at least one feed pipe...

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Bibliographische Detailangaben
Hauptverfasser:	OLLILA, JANNE, ROENNBERG, TOM, LOUHELAINEN, HARRI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CHEMISTRY DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FURNACES HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OVENS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RETORTS TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a method of and equipment for pre-treating material that is fed into a smelting furnace (2), such as an electric furnace, whereby the feed material is directed to a preheating system (1) comprising several separate preheating silos (3), each containing at least one feed pipe (6) that is connected to the smelting furnace and a means (12) for distributing the preheating gas in the preheating silo, whereby the exhaust gas (16) that is released from each preheating silo (3) of the preheating system is directed to common gas cleaning equipment (10), the gas pressure in each individual preheating silo being controlled by adjusting the amount of exhaust gas that is fed into the equipment. L'invention concerne un procédé et un équipement de prétraitement de matériau qui alimente un four de fusion (2), tel qu'un four électrique, le matériau d'alimentation étant dirigé vers un système de préchauffage (1) comprenant plusieurs silos de préchauffage (3) séparés, chacun contenant au moins un tuyau d'alimentation (6) qui est relié au four de fusion et un moyen (12) permettant de distribuer le gaz de préchauffage dans le silo de préchauffage, le gaz de fumée (16) qui est libéré de chaque silo de préchauffage (3) du système de préchauffage étant ainsi dirigé vers un équipement d'épuration de gaz (10) commun, la pression de gaz dans chaque silo de préchauffage individuel étant régulée par réglage de la quantité de gaz de fumée qui alimente l'équipement.