Assembly of furnace electrodes

Abstract From the Canadian patent

Electric furnaces of the continuous electric arc type employ carbon electrodes which gradually erode at the tip. The electrodes are constructed of segments and new segments are, attached in situ to the upper ends of existing electrodes as, required to maintain operation of the furnace. The segments are usually screwed together. A problem which has been encountered, particularly in larger installations is a tendency for, the electrodes to break causing serious production loss. It has been found, in accordance with this invention that, electrode breakages may be reduced and the over-all efficiency of the operation improved by screwing the electrode segments together under tension.