Carburizer, is used in steelmaking and casting industry, for carburization, desulfurization and other auxiliary materials. The most widely used in iron and steel smelting industry, in the process of smelting iron and steel products, because of smelting time, heat preservation time and heating time, carbon in liquid iron smelting increase wastage, carbon content in molten iron is reduced, that causes the carbon content in molten iron to reach of refining the theoretical value. Carburizing agent belongs to the added steel, iron carburizing raw material, is to make up the carbon content of burning loss in the process of iron and steel melting. High quality carburizer is an indispensable auxiliary additive in the production of high quality steel.

   Carburizing according to the production of raw materials can be divided into: wood carbon, coal carbon, coke carbon, graphite. The coal carbon carburizer is divided into general calcined coal carburizer, asphalt coke carburizer, metallurgical coke carburizer; Coke (petroleum coke) carbon carburizing agent is divided into calcined petroleum coke carburizing agent and graphitized petroleum coke carburizing agent, semi-graphitized petroleum coke carburizing agent; Graphite carburizing agent is divided into soil graphite carburizing agent, natural graphite carburizing agent, composite graphite carburizing agent. High quality carburizer generally refers to the carburizer after graphitization. Under high temperature conditions, the arrangement of carbon atoms is the microscopic form of graphite, so it is called graphitization.