Single electrode dc submerged-arc electric arc furnace

The utility model relates to a smelting device which is suitable for the field of metallurgy, in particular to a single electrode DC submerged-arc electric arc furnace which is suitable for making smelting ferrosilicon and other special alloys. The utility model is not additionally provided with a water-cooling device and an air-cooling device at a conducting bottom according to the insufficiency of the conducting bottom of the single electrode DC electric arc furnace in the prior art. The furnace bottom of the electric arc furnace of the utility model comprises a smelting pot, a connecting layer and a conducting electrode, wherein, one end of the conducting electrode is arranged in the connecting layer, and the other end of the conducting electrode outside the connecting layer is connected with an external power supply. The conducting bottom is made of conducting heat insulating material. The electric arc furnace has the characteristics of simple structure, safe utilization, no water cooling and air cooling, etc.