Cooling device with panels for electric arc furnace

Abstract

Cooling device with panels for electric arc furnaces, employed in an electric furnace in cooperation with the vertical sidewall located above the lower shell (,) of the furnace and/or with the roof (,), the furnace comprising a lower shell (,) to contain the bath of liquid metal (,) and an overhead upper shell defined by a plurality of panels (,) consisting of cooling tubes (,), the upper shell being covered by the roof (,), the lower shell (,) including a containing element (,) made of metal on the outer part, the internal refractory including an upper edge (,) located approximately at the upper line of the layer of slag (,) present above the bath of molten metal (,), each panel (,) including an outer layer (,), an intermediate layer (,) and at least an inner layer (,) of cooling tubes (,), the layers developing vertically along the vertical sidewall of the furnace above the refractory edge of the lower shell (,), the cooling tubes (,), the layers developing vertically along the vertical sidewall of the furnace above the refractory edge of the lower shell (,), the cooling tubes (,) of each layer (,) being progressively and increasingly distanced from each other from the outside of the furnace towards the inside so as to define fissures and spaces of a progressively increasing size whereon the slag attaches itself.