Method and device for operating a DC arc furnace

Details Method and device for operating a DC arc furnace Method and device for operating a DC arc furnace

1982-11-23

1984-08-28

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Charging or discharging

373108, F27D 314

Patent

active

044687826

ABSTRACT:
The present invention relates to a method and a device for operating a DC arc furnace with a bottom in the furnace vat consisting of rammed compound (8) or bricks with metallic elements (7) which are in electrically conductive contact, directly or via electrically conductive bricks (10) such as carbon bricks, with a hearth connection (11). The method is characterized in that, after melting and possibly further treatment of a charge (15), when tapping said melt such a quantity thereof is left that said remainder, the sump (17), may serve as part of a starting electrode for the next melting operation.

REFERENCES:
patent: 3789127 (1974-01-01), Bowman
patent: 4324943 (1982-04-01), Stenkvist et al.

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