According to the material, generally can be divided into: metallurgical coke carbonizer, calcined coal carbonizer, petroleum coke carbonizer, graphitization carbonizer, natural graphite carbonizer, composite material carbonizer.
 
1. petroleum coke carbonizer
 petroleum coke carbonizer is made of petroleum coke by calcining and purifying. It is characterized by high carbon, low sulfur and low ash, and it is an ideal carbon material and reaction intermediate for metallurgy, chemical industry, machinery, power industry and so on.
 
2. metallurgical coke carbonizer
It is usually cupola with large coke, its role in addition to smelting, is to add carbon to the metal charge.
3. Coal calciner
Mainly produced in ningxia shizuishan, Inner Mongolia wuhai.The composition is generally C: 90-93%, s0.3-0.5%.Mainly used in steelmaking enterprises, some foundry enterprises used in gray cast iron.The disadvantages are low carbon content, slow melting, waste of electricity, large residual.
4. petroleum coke carbonizer
Mainly produced in liaoning, tianjin and shandong, liaoning mainly produces pellet coke, used for casting is not good, shandong and tianjin petroleum coke can be used for casting gray cast iron.The composition is generally C: 96-99%;S0.3-0.7%.Mainly used for steel, gray cast iron, brake pad, coated wire and so on.
5. graphite carbonizer
The main producing areas are shandong, henan, etc., with few manufacturers. The main materials are graphitized petroleum coke and graphitized electrode.The general composition was >98-99.5%;Sulfur < 0.05-0.03%.Mainly used for ductile iron.It is characterized by fast absorption, high carbon and low sulfur.
6. Natural graphite carburizer
Mainly natural graphite, carbon 65-99%, mainly used in steel mills, foundry is not applicable.
7. Composite material carburizer
Recently, there are some artificial bar particles or regular spherical particles on the market, using graphite powder, coke powder, petroleum coke and other foot materials, adding binder with machine pressing molding, carbon is generally between 93-97%, sulfur is unstable, generally floating between 0.09-0.7%.Characterized by cheap price, the disadvantage is that the use of the stable addition and control of sulfur content.
What is the difference between graphite carburizer and coal carburizer?
First, the raw materials are different, graphite carburizer is made of natural graphite through screening and processing, coal carburizer is made of anthracite;
Second, the characteristics are different, graphite carburizer has low sulfur, low nitrogen and low phosphorus, high temperature resistance, good electrical conductivity, etc., these are advantages that coal carburizer does not have;
Third, the absorption rate is different. The absorption rate of graphite carburizer is more than 90%, which is why the graphite carburizer with low fixed carbon content (75%) can also meet the use requirements.
Fourth, the price of graphite carburizer is relatively high, but the comprehensive use cost is much lower.