carbon raiser

Carbon raiser can also be called recarburizer is one type of raw material which can be used into the steel making or casting to increase the content of carbon, some manufacturer just call it the carbon, but actually it can be divided into four types, such as calcined coal, graphite,petroleum coke,graphitized petroleum coke.

 

But there are so many details need to notice for the carbon raiser in China, for the calcined coal and petroleum coke, the content of sulfur is higher, almost can reach 0.5%, but for the graphite and graphitized petroleum coke, the content of sulfur just 0.08% or 0.05%, then you can make the choice of carbon raiser according to the requirement of sulfur for your products. What is more, the most important content of the carbon raiser is the carbon, the content of carbon for the calcined coal can be 85%, 90%, at most can reach 93%, for the graphite can reach 95%, but for the petroleum coke and graphitized petroleum coke the content of carbon can reach 98% even 98.5%, the higher the carbon content, the better the purity and the effect of carbon increasing will be better.

As the manufacturer of carbon raiser always know that because of the content of nitrogen is not limited, so it generally used in the gray cast iron, for the graphite carbon raiser the content of nitrogen can be 500PPM, so always be advised to used in the ductile cast iron, for the graphitized petroleum coke, because of the low content of sulfur and nitrogen, it can be used into the gray and ductile cast iron, so you can also make the choice of carbon raiser according to this character.

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