METHOD OF SMELTING OF THE STAINLESS STEEL INTERMEDIATE PRODUCT IN THE ARC ELECTRIC FURNACE

• Main Authors: SHABUROV DMITRIJ VALENTINOVICH, ABARIN VIKTOR IVANOVICH, ANTONOV VITALIJ IVANOVICH, BOCHKAREV SERGEJ PAVLOVICH, PODKORYTOV ALEKSANDR LEONIDOVICH, MAKAREVICH ALEKSANDR NIKOLAEVICH, SOKUR ALEKSEJ PETROVICH, LIVSHITS DMITRIJ ARNOL'DOVICH, VOROB'EV NIKOLAJ IVANOVICH, TOKOVOJ OLEG KIRILLOVICH, ARTJUSHOV VJACHESLAV NIKOLAEVICH
• Format: Patent
• Language: English; Russian
• Published: 20.03.2007
• Subjects: 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

FIELD: ferrous metallurgy; methods of smelting of the stainless steel intermediate product in the electric arc furnace. ^ SUBSTANCE: the invention is pertaining to the field of to metallurgy and may be used at the stainless steel production by the duplex - process with smelting of the high-chromium exceeding 9 % of chromium iron carbon intermediate product in the electric arc furnace with its subsequent refining in the aggregate of argon-oxygen refining. Reduction of the chromium oxides from scoria is exercised using silicon of the ferrosilicon, which add after carbon-containing reducing agents at achievement of the contents of the chromium oxides in scoria of 12...15 % also introduce at the rate of obtaining of the scoria in the furnace with the contents of the chromium oxides of no more than 5...10 %. The invention allows at saving the sufficient basicity of the scoria to drain it off completely from the furnace, to preserve the furnace lining at the high-degree of usage of chromium and also to reduce the heat duration on the average by 15 minutes and to decrease consumption of the ferrosilicon in 2 times. ^ EFFECT: the invention ensures at saving the sufficient basicity of the scoria to drain it off completely from the furnace, to preserve the furnace lining at the high-degree of usage of chromium, to reduce the heat duration by 15 minutes, to decrease consumption of the ferrosilicon in 2 times. ^ 7 cl, 1 tbl, 1 ex