SEALING DEVICE BETWEEN THROAT HOODS OF MOLTEN METAL FURNACE

PROBLEM TO BE SOLVED: To obtain an releasable sealing device for enclosing the gap between the throat hoods of a molten reduction furnace or a converter in which durability of a packing is enhanced and gas leakage is prevented. SOLUTION: The sealing device comprises an inner seal connected with a ho...

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Bibliographische Detailangaben
Hauptverfasser:	IO YUKITO, NAKANO YOSHIHARU, TANAKA YUKIMASA, SHIGEYAMA YUKINORI
Format:	Patent
Sprache:	eng
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 FERROUS OR NON-FERROUS ALLOYS FURNACES HEATING KILNS LIGHTING MANUFACTURE OF IRON OR STEEL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OVENS PRETREATMENT OF RAW MATERIALS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL PRODUCTION AND REFINING OF METALS RETORTS TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain an releasable sealing device for enclosing the gap between the throat hoods of a molten reduction furnace or a converter in which durability of a packing is enhanced and gas leakage is prevented. SOLUTION: The sealing device comprises an inner seal connected with a hood side seal metal to surround a hood, and an outer seal for sealing the gap between the throat hoods on the outside thereof wherein each seal is provided with an elevating/lowering mechanism. The inner seal is provided with a mechanism for hooking a throat side seal metal on the hood side, and a heatproof plate covering a hood side seal packing upon opening. A seal metal protective skirt and its elevating/lowering mechanism are provided between the inner seal and the hood and an outer seal packing and its inclining/fastening mechanism are provided at a lower part of the outer seal. A gas introduction opening for introducing inert gas between the inner and outer seals is preferably provided. Furthermore, a dust seal is preferably projected from the hood side seal metal. Safety operation is ensured even if the inner pressure of a furnace is increased.