Other

Alexandr Nikolaevich Popov

Vladimir L Rozenberg

Boris B Pelts

Boris P Onischin

Viktor R Keller

Alexandr E Burochkin

Valery D Linev

Jury S Ioffe

Mikhail Z Zhivov

Leonid Savvich Katsevich

Sergei G Mittsev

Grigory Alexandrovich Ljubimov

Jury A Romanenkov

Mark Abramovich Ryss

German V Serov

German Mikhailovich Schegolev

Sergei M Nekhamin

Valentin Ostapovich German

Igor P Brukovsky

Leonid A Ryazantsev

Gennady D Bogoljubov

Jury Pavlovich Kukota

Grigory B Fridman

Leonid I Boitsov

Petr D Andrienko

German V Kovalev

Sergei A Sankov

Vladimir V Fomenko

Valery I Stalev

Stanislav V Petrov

Boris Vladimirovich Parfenov

Pavel K Greditor

Vladimir G Mashyanov

Disclosed is an ore-smelting electrical furnace bath, in which smelting is accomplished with electrodes buried into the melted slag, comprising an externally cooled metallic jacket, a lining forming the walls and the bottom of the bath, and a sealing layer interposed therebetween. The walls of the bath in the melted slag zone are made from graphite-reinforced refractory blocks having a thickness at which the total thermal resistance of these blocks and of the sealing layer ranges from 0.01 to 0.09 m.sup.2 hr.deg./kcal. The lower portion of the aforesaid walls and the bottom are made from refractory carbon blocks.

Ore-smelting electrical furnace bath

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.

Method and apparatus for smelting charge materials in electric arc

An electrode structure for use in an electric discharge device includes a fluid-permeable discharge chamber; a flow of gas seeded with actively emissive elements is delivered to the interior surface of said discharge chamber for a distributed electric discharge to be maintained thereat. The discharge chamber is fitted with an opening providing for a discharge channel outlet. Service life of the proposed electrode structure reaches several thousands of hours, which is possible due to erosion inhibition at the discharge surface. Simplicity of design, reasonable weight and dimensions of the electrode structure renders it suitable for use as an electrode in plasmatrons employed in chemical industry and metallurgy, as well as an electrode for electric arc melting furnaces. The electrode structure can also be used as a welding electrode, and as an electrode for MHD generators and other electric discharge devices with electric arc heating process being used therein.

Electrode structure for an electric discharge device

An electric furnace for the melting of metallic and non-metallic charge, comprising an annular hearth which houses the electrodes connected to a power supply. The central zone of the furnace can accommodate the spouts for discharging the melt, supports with electrode holders, furnace transformers or gas cleaning devices.

Electric furnace

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Moscow, Russia

Alexandr Nikolaevich Popov