Chinese name coal pitch
Foreign name Coal tar Pitch
Coal pitch, a kind of artificial pitch, is generally a viscous liquid, semi-solid or solid. The color is black and shiny. The residue after removing the liquid fraction from coal tar and coal tar distillation, which accounts for about 50% to 60% of the total coal tar, is a bulk product. The current national standard is GB/T 2290-2012
【Use】
1 Used as a fuel, because of its high solid content, it is generally mixed with heavy oil or made into a slurry for use, which can partially replace heavy oil [2]
2 Used in the production of carbon electrodes. The carbon in coal pitch has a relatively high degree of graphitization. It can be used as an electrode material, or as a wetting agent and a binder. In this regard, there are many types of products and a wide range of products. The main purpose of asphalt.
3 Coatings are mainly used as waterproof coatings for buildings and pipes after processing. Epoxy coal tar paint is one of the most widely used.
4 Road construction and building materials are generally mixed with petroleum pitch. Compared with petroleum pitch, there is a clear difference in quality and durability. Coal pitch has poor plasticity, poor temperature stability, brittleness in winter, softening in summer, and fast aging, and the performance of the mixed pitch of the two is better than when used alone. In addition, there are many harmful substances in coal tar pitch, many of which are very harmful to the human body, and it is more environmentally friendly to use after harmless treatment.
5 High value-added products such as needle coke, activated carbon and carbon fiber. Coal tar pitch has high residual carbon value, many graphitization components, and easy processing. Needle coke and carbon fiber are high-end materials with high added value. Using coal tar pitch as raw material is equivalent to turning waste into treasure.
6 Other uses such as oil felt
