Petroleum coke carburizing agent is made of petroleum coke by calcination and purification, and its appearance is round or polygonal. It is characterized by high carbon, low sulfur and low ash. It is an ideal carbonized material and reaction intermediate in metallurgy, chemical industry, machinery, electric power and other industries, and has been widely used. ?

2, metallurgical coke carburizing agent

This is the big coke commonly used in cupola. Its function is not only to melt, but also to add carbon to metal charge. ?

3. Calcined coal carburizing agent

Location: Shizuishan in Ningxia and Wuhai in Inner Mongolia. Generally, the composition is C: 90-93% and S: 0.3-0.5%. Mainly used in steel-making enterprises, and some foundry enterprises are used in gray cast iron. Disadvantages are low carbon content, slow melting, waste of electric energy and much residue. ?

4, petroleum coke carburizing agent

Location: Liaoning, Tianjin and Shandong. Liaoning mainly produces shot coke, which is not conducive to casting. Petroleum coke from Shandong and Tianjin can be used to cast gray cast iron. The composition is generally C: 96-99%; 0.3% to 0.7%. Mainly used in steelmaking, gray cast iron, brake pads, cored wires, etc.

5, graphitization carburizing agent

The main producing areas are Shandong and Henan, and there are few manufacturers. The main materials are graphitized petroleum coke and graphitized electrode. The general composition is carbon content >; 98-99.5%; sulphur

6, natural graphite carburizing agent

It is mainly natural graphite with a carbon content of 65%-99%, which is mainly used in steel mills and not in foundries. ?

7, composite carburizing agent

At present, there are some artificial rod-shaped or regular spherical particle carburizing agents on the market, which are made of waste materials such as graphite powder, coke powder and petroleum coke. , pressed by machine with adhesive.

Carbon is generally between 93% and 97%, and sulfur is unstable, generally fluctuating between 0.09% and 0.7%. Its characteristic is low price, but the disadvantage is that it is impossible to stabilize the dosage and control the sulfur content when using.