Industrial electric heating furnaces – Arc furnace device – Electrode
Patent
1997-02-27
1999-08-17
Walberg, Teresa
Industrial electric heating furnaces
Arc furnace device
Electrode
373 82, H05B 706
Patent
active
059404264
ABSTRACT:
Adapter device for composite electrodes having an auxiliary reactance function on electric arc furnaces, the furnace being able to be of a type fed with direct current or alternating current and comprising at least one secondary supply circuit which connects a transformer (13) to one or more electrode-holder arms (16), the adapter comprising a hollow cylindrical metallic body (21) associated with the relative electrode-holder arm (16) and directed towards the inside of the furnace, the metallic body (21) being connected at its lower end to a graphite segment (24), directed towards the bath of molten metal, at least part of the the adapter (20) including a conductive portion (30) which is made of a highly conductive material and is solidly associated with the metallic body (21) and is dimensioned according to the desired value of overall reactance of the secondary circuit of the furnace.
REFERENCES:
patent: 4451926 (1984-05-01), Hogg, Jr. et al.
patent: 4468783 (1984-08-01), Bauer et al.
patent: 4532634 (1985-07-01), Taube et al.
patent: 4559630 (1985-12-01), Maes
patent: 4639928 (1987-01-01), Conradty et al.
Dratner Johannes
Gensini Gianni
Danieli & C. Officine Meccaniche SpA
Van Quang
Walberg Teresa
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