Direct current arc furnace

Details Direct current arc furnace Direct current arc furnace

1985-01-22

1986-10-21

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373108, H05B 700

Patent

active

046189637

ABSTRACT:
A DC arc furnace having an electrically conductive hearth adapted to contain a melt, and at least one arcing electrode above the hearth and adapted to form a heating arc with the melt when the hearth and electrode are supplied with DC power; the hearth having a wear lining directly contacted by the melt and formed by refractory material through which electrical conductors extend from the bottom of the wear lining to its top. A metal plate under the wear lining electrically connects with the conductors and is supported by one or more electrically non-conductive layers of refractory. Power connection to the wear lining is via the plate and a connection with the periphery of the plate.

REFERENCES:
patent: 3218050 (1965-11-01), Healy et al.
patent: 4228314 (1980-10-01), Stenkvist
patent: 4541099 (1985-09-01), Rappinger et al.

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