Electric melter for high electrical resistivity glass materials

Abstract From the Canadian patent

An electric melting furnace is described for melting high electrical resistivity glass such as, E-glass, within a melting chamber surrounded by a relatively low electrically resistivity refractory such as chromic oxide refractory, by utilizing interconnected peripherally positioned batch electrodes at substantially the same potential as the chromic oxide walls and centrally positioned electrodes which are immersed a greater distance than the batch electrodes. A quiescent zone is formed adjacent a lower portion of the melting chamber and the batch blanket and effective hydrostatic head of the molten bath are adjusted by controlling the immersion of the batch electrodes within the molten bath.