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Calcined Petroleum Coke can be divided into needle coke, sponge coke, projectile coke and coke breeze four kinds:
Needle coke, has obvious needle-like structure and fiber texture, mainly used for steel-making in high power and ultra-high power graphite electrode. As a result of needle coke in sulfur content, ash content, volatile matter and true density and so on have strict quality requirements, so the production process of needle coke and raw materials have special requirements.
The sponge coke, high chemical reactivity, low content of impurities, mainly used in the carbon industry.
Focal or spheroidal coke: the projectile shape is round, diameter 0.6-30 mm, usually from the production of high asphaltic residual oil, can only be used as industrial fuel power generation, cement etc.
Coke breeze: fluidized coking process, the fine particles (0.1- 0.4 mm) in diameter, high volatile, high expansion coefficient, cannot be directly used for electrode preparation and carbon industry.
Calcined Petroleum Coke
