Symmetrical current conductor system for a DC arc furnace

Details Symmetrical current conductor system for a DC arc furnace Symmetrical current conductor system for a DC arc furnace

1984-04-17

1985-10-29

Pellinen, A. D.

Industrial electric heating furnaces

Arc furnace device

Power supply system

373 72, H05B 711

Patent

active

045504130

ABSTRACT:
A DC arc furnace has a side wall and an electrically conductive hearth, a roof on top of the side wall and over the hearth, an arcing electrode depending through the roof, a plurality of electrical hearth connections extending from the hearth, a first DC power conductor connecting with the hearth connections to provide current and therefore magnetic field symmetry preventing arc deviations, the first and second conductors are extended from a position horizontally offset from the furnace to a point below the hearth and aligned vertically with the electrode, the first conductor forming at least two branches which extend from the point horizontally in opposite directions to beyond the side wall and upwardly so as to jointly connect with the arcing electrode, the second conductor forming at least two branches which extend horizontally from the point in opposite directions with one branch connecting with one of the hearth connections and the other branch connecting with the other one of the hearth connections.

REFERENCES:
patent: 3676564 (1972-07-01), Fujiwara
patent: 4228314 (1980-10-01), Stenkvist
patent: 4324943 (1982-04-01), Stenkvist et al.
patent: 4403328 (1983-09-01), Lassander et al.
patent: 4425658 (1984-01-01), Bretthauer et al.
patent: 4435817 (1984-03-01), Krossrud

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