The water-cooling furnace cover is a close-packed tubular water-cooling mechanism. The side wall of the furnace cover is slightly tapered, with a large bottom and a small top. The top is a conical surface to ensure rigidity, and the center of the top is an inverted conical water cooling ring.

The cent cover for contain refractory materials is provided with three electrode holes correspond to that three electrodes. The water-cooled furnace cover consists of a furnace cover body, a working door, an opening device and a water distribution device. Type of water-cooled furnace cover: water-cooled close-packed tube type.