ARC STEEL-SMELTING DC FURNACE Russian patent published in 2014 - IPC F27B3/08 

FIELD: metallurgy.

SUBSTANCE: arc steel-smelting furnace comprises a lined metal body with a metal bath and water cooled walls, a drain chute, a vault comprising lined and water-cooled parts, with a vault electrode arranged in it, and hearth electrodes installed as capable of alternate connection. In the furnace hearth there are four hearth electrodes arranged symmetrically along circumference, the diameter of which makes 0.46-0.52 of the metal bath diameter.

EFFECT: invention makes it possible to reduce time of melting, to reduce energy consumption and to increase furnace efficiency.

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