Shroud for furnace electrode

Details Shroud for furnace electrode Shroud for furnace electrode

1984-12-18

1987-02-03

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Electrode support

373101, H05B 7102

Patent

active

046413200

ABSTRACT:
A shroud assembly for an electric arc furnace in which a plurality of electrodes extend through the roof of the furnace and are adjustably positonable in a clamping type holder. The shroud is secured to each of the electrode holders and extends through the roof into the furnace, the shroud having a conductive ring disposed in the lower end of the shroud with the radial spacing between the lower end of the ring and the electrode being sufficiently small to provide substantial flow resistance to corrosive furnace gases tending to pass between the electrode and the ring, and the shroud having sufficient axial length to provide an abutment surface for the electrode, and lateral support, when the electrode is displaced from its normally vertical position thereby reducing the bending moment tending to break the electrode upon such displacement.

REFERENCES:
patent: 1363815 (1920-12-01), Saklatwalla et al.
patent: 3717445 (1973-02-01), Yoshimura et al.
patent: 4490825 (1984-12-01), Persson

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