PROTECTION SHIELD FOR CHARGING SYSTEM

A shielding device for a furnace charging system having a movable chute 104 within a housing aperture 110, the device comprising a plurality of blades 108 arranged so that at any point in the chute movement at least one blade spans a portion of the space between the chute and housing. The blades are...

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Bibliographische Detailangaben
Hauptverfasser:	KAPS, GARETH, MILLINGTON, NEIL, FLETCHER, JEREMY, CRAIG, IAN MERVYN
Format:	Patent
Sprache:	eng ; fre ; ger
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 FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MANUFACTURE OF IRON OR STEEL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OPEN SINTERING OR LIKE APPARATUS OVENS RETORTS WEAPONS
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Beschreibung
Zusammenfassung:	A shielding device for a furnace charging system having a movable chute 104 within a housing aperture 110, the device comprising a plurality of blades 108 arranged so that at any point in the chute movement at least one blade spans a portion of the space between the chute and housing. The blades are mounted parallel as annular rings around a frustro-conical shield 106, and their outer edges trace a spheroid profile as the chute moves. The blades are less likely to distort compared to a spherical shield, but can flex if they contact housing 102. In other embodiments the blades can be angled, radial, mounted on the housing 102, or formed from corrugations of the shield 106. Space between blades may contain heat resistant packing, such as ceramic wool. A nitrogen cooling curtain may also purge dust. The furnace may be a blast furnace.