Method for aluminum killed steel for online computation of FeO content in pit slag in low frequency (LF) refining furnace

The invention relates to a method for aluminum killed steel for online computation of FeO content in pit slag in a low frequency (LF) refining furnace. The method comprises the following steps: setting the concentration of aluminum in molten steel in the steel tapping process to be CAl1, wherein the...

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Bibliographische Detailangaben
Hauptverfasser:	HAN RUWEN, JIANG HONGGUANG, CHEN WENDA, LIU BINGJUN, LI SHUN, WANG BO, LIU HONGYIN, NI PEILIANG, SU XIAOMING, LIU CHAO, LENG WEIWEI, XI CHAO, YANG BO, WANG MINGJIE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY METALLURGY OF IRON PHYSICS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
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Beschreibung
Zusammenfassung:	The invention relates to a method for aluminum killed steel for online computation of FeO content in pit slag in a low frequency (LF) refining furnace. The method comprises the following steps: setting the concentration of aluminum in molten steel in the steel tapping process to be CAl1, wherein the computational formula is CAl1=converter aluminum quantity - aluminum molten steel weight consumed by dissolved oxygen in a steel-free liquid; turning on the flow of an argon blowing tube to the maximal extent and agitating for 1 minute after low-frequency drawing in, and then measuring oxygen and aluminum by using an oxygen fixing probe; setting the concentration of aluminum in the measured molten steel to be CAl2, and then calculating the value of 1n(Cal1CAl2); multiplying the value by a fixed numerical value K1, so as to obtain the FeO content (mass percent) in the pit slag in the LF refining furnace. By adopting the method, online computation of the FeO content in the pit slag in the LF refining furnace is achi