needle coke is an fully developed good quality product among carbon materials. It is gray solid with metallic luster, obvious floating texture,like threadiness or needle, few and big oval wholes, high length-width ratio. The lubricious needle coke is a raw material to produce ultra high power electrode, special carbon material, carbon fiber, and it’s composite, and other high-end carbon products. According to it’s raw materials, it can be divided into oil-based needle coke and coal-base needle coke. Using petroleum residual oil as raw material is oil-base needle coke while using coal-tar pitch and its fraction as raw material is coal-base needle coke.
This product, as raw material of oil-base needle coke contains large quantities of aromatics,especially three rings alkane and four rings alkane. It is an good raw material for producing needle coke because of its high density, low sulfur, nitrogen metal and ash content.