Electric arc furnace is an electric furnace that uses the high temperature produced by electrode arc to melt ores and metals. The energy is very concentrated when the gas discharge forms the arc, and the temperature of the arc area is above 3000 ℃.

According to the melting form of electrode (1) Non consumable electrode electric arc furnace uses tungsten or graphite as electrode. The electrode itself does not consume or consumes little in the smelting process. (2) The consumable electrode electric arc furnace uses the melted metal as the electrode, and the metal electrode consumes itself while melting.