Facts about non-calcined petroleum coke

Non-calcined petroleum coke is a byproduct of petroleum processing. It is a black solid substance in appearance, with irregular shapes and sizes of black lumps (or particles) and metallic luster. Non-calcined petroleum coke particles have a porous structure and are usually used to make electrodes and casting materials. Compared with calcined petroleum coke, non-calcined petroleum coke has a lower quality, but it still has some important uses.

Non-calcined petroleum coke is made from high-temperature carbonized petroleum raw materials. 90-95% of its composition is carbon, with small amounts of sulfur, nitrogen and ash. It has high calorific value, low volatility and high carbon content, making it an important industrial raw material and energy source.

Non-calcined petroleum coke can be used to make various types of electrodes, including lead-acid batteries, lithium-ion batteries and supercapacitors. The conductivity of non-calcined petroleum coke is poor, but it can be improved by adding some conductive agents.

Non-calcined petroleum coke can also be used to make casting materials. Casting is a method of making metal parts, usually using plaster molds or sand molds. Non-calcined petroleum coke can be used as an additive to casting materials to improve the fluidity and wear resistance of casting materials.

In addition to the above uses, non-calcined petroleum coke can also be used to make products such as carbon black, activated carbon and graphite. Carbon black is a black powder that is usually used to make products such as tires, rubber products and inks. Activated carbon is a porous material that is usually used to purify water and air. Graphite is a material with good conductivity and thermal stability, which is usually used to make products such as electrodes, graphene and high-temperature materials. 

Why should non-calcined petroleum coke be further processed?

 Remove moisture and volatiles from the raw materials. Non-calcined petroleum coke usually contains a certain amount of volatiles. The volatiles can be removed after calcination, thereby increasing the fixed carbon content of the raw materials. Non-calcined petroleum coke generally contains 3~10% moisture. Removing moisture from the raw materials by calcination is conducive to operations such as crushing, screening, and grinding, improving its adsorption performance for binders, and improving product quality.

 Improve the density and mechanical strength of the raw materials. Due to the removal of volatiles, the raw material volume shrinks, the density increases, the strength increases, and at the same time, it obtains better thermal stability, thereby reducing the secondary shrinkage of the product during calcination. The more fully the raw materials are calcined, the more beneficial it is to the quality of the products.

Improve the conductivity of the raw materials. After calcination, the volatiles of non-calcined petroleum coke are eliminated, the molecular structure is changed, and the resistivity is reduced, thereby improving the conductivity of the raw materials. Generally speaking, the higher the degree of calcination of the raw material, the better the conductivity of the calcined material.