The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 14, 1983
Filed:
Jan. 15, 1982
Vladimir L Rozenberg, Moscow, SU;
Igor P Brukovsky, Moscow, SU;
Sergei M Nekhamin, Pushkino Moskovskoi oblasti, SU;
Mark A Ryss, Chelyabinsk, SU;
Boris B Pelts, Moscow, SU;
German V Serov, Moscow, SU;
Alexandr N Popov, Moscow, SU;
Gennady D Bogoljubov, Moscow, SU;
Leonid A Ryazantsev, Moscow, SU;
Jury S Ioffe, Moscow, SU;
Grigory B Fridman, Zaporozhie, SU;
Leonid I Boitsov, Zaporozhie, SU;
Petr D Andrienko, Zaporozhie, SU;
German V Kovalev, Zaporozhie, SU;
Sergei A Sankov, Zaporozhie, SU;
Vladimir V Fomenko, Zaporozhie, SU;
Valery I Stalev, Kharkov, SU;
Pavel K Greditor, Zaporozhie, SU;
Stanislav V Petrov, Kharkov, SU;
Vladimir G Mashyanov, Zaporozhie, SU;
Other;
Abstract
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.