Industrial electric heating furnaces – Arc furnace device – Electrode support
Patent
1980-05-08
1982-08-17
Envall, Jr., Roy N.
Industrial electric heating furnaces
Arc furnace device
Electrode support
373 78, H05B 700
Patent
active
043453333
ABSTRACT:
The invention concerns a method and an apparatus for replacing the electrodes of an electric arc furnace.
Replacement of the electrodes in an electric arc furnace with an electrode roof (9) removable from the furnace shell takes place by moving the electrodes downwards and upwards through the electrode roof when removed from the furnace shell, in connection with removing and inserting the electrodes from and into their holders (13), respectively. An apparatus with a number of vertical tubes which can be placed below the removed electrode roof is arranged beside the furnace shell. Used electrodes can be lowered into some of the tubes and jointed replacement electrodes can be pushed up through the electrode roof from other tubes. The tubes are placed on a revolving disc (2) for alternating placing below the electrode positions in the roof. By means of the invention replacement of the electrodes can take place without any personnel having to stay above the electrode roof.
REFERENCES:
patent: 2469740 (1949-05-01), Moore
patent: 3612739 (1971-10-01), Korneff
patent: 4238633 (1980-12-01), Medovar et al.
Aktiebolaget SKF
Envall Jr. Roy N.
Renz Jr. Eugene E.
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