Graphite electrodes are mainly made of petroleum coke and needle coke as raw materials, and coal pitch as the binding agent.They are produced by calcination, batching, kneading, pressing, roasting, graphitization and mechanical processing.They are released in the form of an electric arc in an electric arc furnace.Conductors that use electric energy to heat and melt the charge can be divided into ordinary power, high power and ultra-high power according to their quality indicators.