Graphite electrode, mainly using petroleum coke and needle coke as raw materials, coal tar pitch as binding agent, is made by calcination, batching, kneading, pressing, roasting, graphitization, and machining. It is released in the form of electric arc in the electric arc furnace. Electric energy is a conductor that heats and melts the charge.

Electric arc steelmaking furnaces are generally divided into three categories, namely ordinary power electric furnaces, high power electric furnaces and ultra-high power electric furnaces. Corresponding to the power level of electric furnace steelmaking, graphite electrodes are correspondingly divided into 3 types, ordinary power graphite electrodes (code RP grade), high power graphite electrodes (code HP grade) and ultra-high power graphite electrodes (code UHP grade).

1.Ordinary power graphite electrode

Graphite electrodes with current density lower than 17A/cm2 are allowed, and they are mainly used in ordinary power electric furnaces for steelmaking, silicon making, and yellow phosphorus making.

2.High power graphite electrode

Graphite electrodes with a current density of 18-25A/cm2 are allowed, and they are mainly used in high-power electric arc furnaces for steelmaking.

3.Ultra-high power graphite electrode

Graphite electrodes with a current density greater than 25A/cm 2 are allowed, which are mainly used in ultra-high power steelmaking electric arc furnaces.

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