STEEL MELTING METHOD IN ELECTRIC-ARC STEEL MELTING FURNACE

FIELD: ferrous metallurgy, namely processes for steel melting in electric-arc steel melting furnaces. ^ SUBSTANCE: method comprises steps of loading metal scrap into furnace; pouring cast iron; melting; frothing slag due to oxygen blowing through and due to blowing-in carbon-containing material at o...

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Hauptverfasser:	KOZYREV NIKOLAJ ANATOL'EVICH, KUZNETSOV EVGENIJ PAVLOVICH, PAVLOV VJACHESLAV VLADIMIROVICH, BOTNEV KONSTANTIN EVGEN'EVICH, SYCHEV PAVEL EVGEN'EVICH, GODIK LEONID ALEKSANDROVICH, DEVJATKIN JURIJ DMITRIEVICH, SHUKLIN ALEKSEJ VLADISLAVOVICH
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, namely processes for steel melting in electric-arc steel melting furnaces. ^ SUBSTANCE: method comprises steps of loading metal scrap into furnace; pouring cast iron; melting; frothing slag due to oxygen blowing through and due to blowing-in carbon-containing material at oxidizing period; discharging melt material into ladle. Dust of blast furnace production is used as carbon-containing material at intensity of blowing-in 10 - 100 kg/min and at flow rate 2.5 -20 kg per ton of steel or dust of gas scrubbing of electric steel melting production at intensity of blowing-in 15 - 150 kg/min and flow rate 3.8 - 30 kg per ton of steel. ^ EFFECT: improved frothing properties of furnace slag, lowered number of emergency interruptions due to decreased irradiation of electric arc refining acting upon water-cooled members of furnace, shortened period of melting process, effective recovery of waste production materials.