Method for closing and opening a tapping hole of a metallurgical vessel

In a method for closing and opening a tapping hole of a metallurgical vessel, in which method a closure body (4), which leaves clear an annular gap between the closure body (4) and the wall of the tapping hole, can be moved out of a waiting position (I) into a closure position (II), in which it cove...

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Bibliographische Detailangaben
Hauptverfasser:	HOELLWARTH ERNST, PASTER ALBERT, KERSCHBAUM HELMUT, POST CHRISTIAN, ENKNER BERNHARD
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 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 MANUFACTURE OF IRON OR STEEL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OVENS PERFORMING OPERATIONS POWDER METALLURGY PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL RETORTS TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS WEAPONS
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Beschreibung
Zusammenfassung:	In a method for closing and opening a tapping hole of a metallurgical vessel, in which method a closure body (4), which leaves clear an annular gap between the closure body (4) and the wall of the tapping hole, can be moved out of a waiting position (I) into a closure position (II), in which it covers the tapping hole, and back, and in which method, at least in the closure position (II), a pressurized gas is introduced into the tapping hole counter to the outflow direction of a molten material contained in the metallurgical vessel, in order to avoid skull formation, the closure body (4) is moved out of the waiting position (I) into the closure position (II) and back with directions of movement which lie in different areas.