Impulse coiling with inert gas in BOF and AOD converter process

The method comprises treating iron melt during a bubble phase through inflation of oxygen at top side and blowing fluids containing inert gas in the melt during the time section of the bubble phase at converter base side over base- or side nozzle. During the time section of the bubble phase, a part...

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Bibliographische Detailangaben
Hauptverfasser:	Kleinschmidt, Guido, Odenthal, Hans-Jürgen, Schlüter, Jochen, Falkenreck, Udo
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS POWDER METALLURGY PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TRANSPORTING TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Beschreibung
Zusammenfassung:	The method comprises treating iron melt during a bubble phase through inflation of oxygen at top side and blowing fluids containing inert gas in the melt during the time section of the bubble phase at converter base side over base- or side nozzle. During the time section of the bubble phase, a part of the base- or side nozzle existing in a converter is subjected with the moderate inert gas fluid pressure and the other part of the base- or side nozzle is subjected with the increased inert gas fluid pressure. The method comprises treating iron melt during a bubble phase through inflation of oxygen at top side and blowing fluids containing inert gas in the melt during the time section of the bubble phase at converter base side over base- or side nozzle. During the time section of the bubble phase, a part of the base- or side nozzle existing in a converter is subjected with the moderate inert gas fluid pressure and the other part of the base- or side nozzle is subjected with the increased inert gas fluid pressure. Different group of base- or side nozzle is subjected with the moderate or increased inert gas fluid pressure during the time period and/or the period alternating during the time period.