Under the condition of air isolation, the bituminous coal is heated to 950- 1050℃, dried, pyrolyzed, melted, bonded, solidified and shrunk, and finally coke is made. This process is called high temperature coking (high temperature dry distillation). Coke obtained by high temperature coking is used for blast furnace smelting, casting and gasification. The recovered and purified coke oven gas produced in coking process is not only a high calorific value fuel, but also an important raw material for organic synthesis industry.

Petroleum coke (petroleum)

Coke) is the product of separating light oil and heavy oil from crude oil by distillation, and then pyrolyzing the heavy oil. From the appearance, coke is a kind of black block (or particle) with irregular shape and different sizes, which has metallic luster. Coke particles have a porous structure. The main element composition is carbon, accounting for more than 80wt%, and the rest are hydrogen, oxygen, nitrogen, sulfur and metal elements.

Petroleum coke has its unique physical, chemical and mechanical properties. Non-volatile carbon in the heating part. Volatiles and mineral impurities (sulfur, metal compounds, water, ash, etc. ) to determine the chemical properties of coke.