FIELD: chemistry, metal melting.
SUBSTANCE: invention concerns electrothermal technique and can be applied in metallurgy for metal heating and melting. Steel-melting arc furnace includes bowl-shaped furnace, spherical fireproof vault with holes for graphite vault electrodes mounted at the points of regular triangle and capable of reciprocating. The furnace has three bottom electrodes positioned along the axes of vault and being neutral to each phase, and three three-phase transformers, whereto are connected by phases vault and bottom electrodes.
EFFECT: increased yield of steel-melting furnace, reduced specific electric power consumption and melting time due to prevention of arc blow off the electrode.
2 dwg
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