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There is coal-based needle coke and petroleum-based needle coke, and either can be used to produce graphite electrodes.Coal-based needle coke is produced from coal tar that appears during coke production. When making the electrodes, it takes up to six months to make with processes including baking and rebaking to convert the coke into graphite. It is a premium grade, high value petroleum coke used in the manufacturing of graphite electrodes of very low Coefficient of Thermal Expansion (CTE) for the electric arc furnaces in the steel industry. Needle coke is used as a primary raw material for graphite electrodes in electric furnace. So let DanCarbon talk about What is needle coke graphite electrode? How to make needle coke?ġ. Needle coke is used as a primary raw material for Ultra high power graphite electrodes.