Graphite Petroleum Coke/ GPC
Graphite petroleum coke is a product of calcined petroleum coke as raw material, which is placed in a graphite furnace, undergoes high-temperature graphitization, undergoes physical and chemical reactions, and removes sulfur and ash and other impurities. Sometimes called artificial graphite, when used as a carbon raiser, it is often called an ultra-low sulfur/low nitrogen carburizer.
Graphite petroleum coke is a black or dark gray hard solid petroleum product with metallic luster and porosity. It is a carbon body composed of tiny graphite crystals in the form of granular, columnar or needle-shaped. Petroleum coke components are hydrocarbons, containing more than 99% carbon, and also contain nitrogen, chlorine, sulfur and heavy metal compounds.
Graphite petroleum coke is widely used in industry. It is used as a carbon raiser in metallurgy, casting, and precision casting; it is used to make high-temperature crucibles in smelting, lubricants in the mechanical industry, and to make electrodes and pencil cores; it is widely used in Advanced refractory materials and coatings in the metallurgical industry, stabilizers for pyrotechnic materials in the military industry, pencil leads in the light industry, carbon brushes in the electrical industry, electrodes in the battery industry, catalysts in the fertilizer industry, etc. Graphite petroleum coke can be used in graphite, smelting and chemical industries depending on its quality. Low-sulfur, high-quality cooked coke, such as needle coke, is mainly used to manufacture ultra-high-power graphite electrodes and some special carbon products; in the steel making industry, needle coke is an important material for the development of new electric furnace steel making technologies. Medium sulfur and ordinary cooked coke are widely used in aluminum smelting. High-sulfur, ordinary raw coke is used in chemical production, such as the manufacture of calcium carbide, silicon carbide, etc., and also as a fuel for metal casting. Most of the petroleum coke produced in China is low-sulfur coke, which is mainly used for aluminum smelting and graphite production.
