Graphite in the electrical industry is widely used as electrodes, brushes, carbon rods, carbon tubes, mercury rectifier cathode, graphite gaskets, telephone parts, television picture tube coating and so on. Among them, the most widely used flake graphite electrode, in the smelting of various alloy steel, ferroalloy, the use of graphite electrodes, when a strong current through the electrode into the furnace melting zone, resulting in arc, the electrical energy into heat, the temperature rose to about , So as to achieve the purpose of melting or reaction.