The graphite electrode is made of high-quality petroleum coke, needle coke, coal pitch and other raw materials through calcination, intermediate crushing, screening, dosing, mixing, compression, roasting, high pressure impregnation, graphitization, machining and other processes, has compact and even structure, good electric conduction and heat-conducting properties, high mechanical strength and strong oxidization corrosion resistance at high temperature, is widely used for arc furnaces and submerged arc furnace to smelt various alloy steel, yellow phosphorus, industry silicon, brown aluminum oxide and other alloy and nonmetal materials.