Furnace forehearth electrode groups having less than 90 DEG phase difference between adjacent groups

摘要

A forehearth in a melting furnace is arranged with groups of electrodes and with each group having at least a pair of opposed electrodes. The opposed electrodes are connected to a multiphase power source so that the phase relationship between groups of adjacent electrodes along the forehearth is 90 DEG or less and typically 60 DEG . The electrode groups may be arranged along the path of molten material movement in the forehearth and may be arranged to generate and produce a current across the forehearth. The electrodes may be arranged to enter from the bottom, side or top of the forehearth channel.