Graphite electrode mainly uses petroleum coke and needle coke as raw materials, coal pitch as binder, and is made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It releases electric energy in the form of electric arc in electric arc furnace The conductor that heats and melts the charge can be divided into ordinary power graphite electrode, high power graphite electrode and ultra-high power graphite electrode according to its quality index.
Electric furnace steelmaking is a major user of graphite electrodes. my country's electric furnace steel output accounts for about 18% of crude steel output, and graphite electrodes for steelmaking account for 70% to 80% of the total graphite electrode usage. Electric furnace steelmaking uses graphite electrodes to introduce current into the furnace, and uses high-temperature heat sources generated by the arc between the electrode end and the charge to carry out smelting.