Anode for an electic arc furnace utilizing electrode segments

Details Anode for an electic arc furnace utilizing electrode segments Anode for an electic arc furnace utilizing electrode segments

1991-11-04

1993-10-19

Reynolds, Bruce A.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373 60, F27D 100

Patent

active

052552845

ABSTRACT:
A direct-current electric arc furnace has an at least one electric arc electrode switched as a cathode and a bottom electrode switched as an anode. The bottom electrode includes an electrically conductive bottom plate, a first ramming mass consisting of electrically non-conducting refractory material centrally located atop the electrically conductive bottom plate, and a second ramming mass consisting of electrically non-conducting refractory material, the second ramming mass being located atop and about a periphery of the electrically conductive bottom plate.
A plurality of concentrically arranged electrode segments are positioned between the first and second ramming masses, each of the plurality of electrode segments including an electrically non-conducting ramming mass configured to support a plurality of vertically arranged and electrically conducting segment conductors. Each of the segment conductors is formed from metal sheeting and electrically connected to the electrically conductive bottom plate to present a low cross sectional area upper frontal face to contact a melt contained in the furnace. The sheeting can be configured as substantially flat sheets, or can be curved to form partial or complete circular pipes.

REFERENCES:
patent: 941419 (1909-11-01), Keller
patent: 3190626 (1965-06-01), Schwabe et al.
patent: 4829538 (1989-05-01), Hlawatschek et al.
patent: 5142650 (1992-08-01), Kida et al.

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