Method and apparatus for smelting charge materials in electric arc furnace

A method for smelting charge materials in an electric arc furnace consists in that a bath of the electric arc furnace is loaded with the charge materials, electrodes of the electric arc furnace are supplied with an alternating current, the charge materials are melted, redox reactions are conducted a...

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Hauptverfasser:	PETROV, STANISLAV V, GREDITOR, PAVEL K, PELTS, BORIS B, RYSS, MARK A, SEROV, GERMAN V, BRUKOVSKY, IGOR P, STALEV, VALERY I, ROZENBERG, VLADIMIR L, IOFFE, JURY S, MASHYANOV, VLADIMIR G, POPOV, ALEXANDR N, BOGOLJUBOV, GENNADY D, BOITSOV, LEONID I, ANDRIENKO, PETR D, FOMENKO, VLADIMIR V, RYAZANTSEV, LEONID A, FRIDMAN, GRIGORY B, NEKHAMIN, SERGEI M, KOVALEV, SANKOV, SERGEI A
Format:	Patent
Sprache:	eng
Schlagworte:	CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	A method for smelting charge materials in an electric arc furnace consists in that a bath of the electric arc furnace is loaded with the charge materials, electrodes of the electric arc furnace are supplied with an alternating current, the charge materials are melted, redox reactions are conducted and a finished melt and a slag are tapped, the alternating current of industrial frequency supplied to the electrodes of the electric arc furnace being first converted to one of a frequency ranging between 0.05 and 30 Hz. An apparatus for carrying into effect the above method comprises an electric arc furnace, in a bath of which are inserted electrodes. A secondary winding of a transformer is coupled with the electrodes through power supply arrangements. Between the electrodes and the transformer and in-between sections of the power supply arrangements is placed a frequency converter, control inputs of which are connected to outputs of a frequency converter control unit having inputs coupled with the power supply arrangements on the side of the electrodes of the electric arc furnace. The apparatus also comprises a unit for controlling the power input to the electric arc furnace, connected to the power supply arrangements on the side of the electrodes and intended for generating a signal energizing an electrode positioning mechanism.