Carburizers are materials with high content of carbon (70-99%), used in metallurgical processes directly or as a component for carburizing of products, and as a material supporting the skimming process of crude iron. They can also be used as a component of moulding sand, plugging in steelmaking and casting. Part of the carburizers in the offer due to the content of SiC of up to several dozen percent is used as an addition to the production of the quality steel.