A method and apparatus for melting vitrifiable materials employs a melting tank for containing a molten bath with an upper surface. The tank has a floor and side walls and channels for discharging molten materials. A crown is situated above the floor and vitrifiable materials are introduced onto the upper surface of the molten bath. A plurality of electrodes having a selected shape and position are situated inside the tank for melting the vitrifiable materials with electric current. The electrodes rest on the floor and extend across the furnace to the opposite wall so as to reduce the head of the molten bath and consequently reduce melting time and energy consumption.

 
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