METHOD OF MAKING STEEL FOR ROUND BILLET

FIELD: ferrous metallurgy; making steel for round billets. ^ SUBSTANCE: proposed method includes feed of metal scrap and molten cast iron to electric steel making furnace, cutoff of furnace slag, addition of lumpy aluminum in the amount of 0.5-1 kg/ton of steel, lime in the amount of 5-7 kg/t of ste...

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Hauptverfasser:	DANILOV ALEKSANDR PETROVICH, KOZYREV NIKOLAJ ANATOL'EVICH, KUZNETSOV EVGENIJ PAVLOVICH, PAVLOV VJACHESLAV VLADIMIROVICH, BOTNEV KONSTANTIN EVGEN'EVICH, SYCHEV PAVEL EVGEN'EVICH, GODIK LEONID ALEKSANDROVICH, DEVJATKIN JURIJ DMITRIEVICH
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY METALLURGY OF IRON 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:	FIELD: ferrous metallurgy; making steel for round billets. ^ SUBSTANCE: proposed method includes feed of metal scrap and molten cast iron to electric steel making furnace, cutoff of furnace slag, addition of lumpy aluminum in the amount of 0.5-1 kg/ton of steel, lime in the amount of 5-7 kg/t of steel and silicon-containing ferro-alloys to obtain content of silicon in steel up to 0.1%, treatment in "ladle-furnace" unit continued for 40-75 min, deoxidation of slag before addition of deoxidants with coke powder, crushed ferro-silicon and aluminum-containing powder-like material in the amount of 0.3-05 kg/t of steel each to obtain concentration of FeO in slag not exceeding 1%, addition of aluminum wire to obtain content of aluminum in steel in the amount of 0.025-0.030% and wire with silico-calcium in the amount of 150-250 g/t of steel and blowing steel with inert gas at flow rate of 10-45m3/h. ^ EFFECT: reduced concentration of oxygen and contamination of steel with non-metallic inclusions.