Method using vanadium-titanium molten iron for smelting low oxygen low carbon IF (interstitial-free) steel

The invention discloses a method using vanadium-titanium molten iron for smelting low oxygen low carbon IF (interstitial-free) steel, and the method comprises the following steps: 1) adding the vanadium-titanium molten iron into a t No. 1 converter for vanadium extraction smelting; 2) performing des...

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Hauptverfasser:	XU TAO, CHEN YONG, WANG JUN, HUANG DESHENG, CHEN LIANG, YANG SENXIANG, ZENG YAOXIAN, ZHANG LONGCHAO, CHEN TIANMING, GONG HONGJUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMISTRY METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Beschreibung
Zusammenfassung:	The invention discloses a method using vanadium-titanium molten iron for smelting low oxygen low carbon IF (interstitial-free) steel, and the method comprises the following steps: 1) adding the vanadium-titanium molten iron into a t No. 1 converter for vanadium extraction smelting; 2) performing desulfurization treatment on semi steel obtained by vanadium extraction; 3) blowing oxygen for slagging of the semi steel obtained by desulfurization, then pushing off the slag to discharge steel to obtain first molten steel; 4) refining the first molten steel in a ladle furnace (LF) to obtain second molten steel; 5) enabling the second molten steel to enter into a RH processing working station for decarburization deoxidation treatment under the vacuum condition; and 6) adding a second aluminum-containing slag modifier into the second molten steel obtained by the deoxidation treatment to obtain third molten steel, and continuously casting the third molten steel. The method can effectively extract vanadium resources, a