There are many kinds of carburizers for steel casting (steelmaking). Generally, large steel mills will choose a variety of carburizers according to different steel types, but the general materials are calcined coal or graphite balls, and natural graphite chips are also used. The content varies from 75 to 99.

We should know that the calcined coal carburizer is mainly produced in Shizuishan of Ningxia and Wuhai of Inner Mongolia. The composition is generally C: 90-93%, s0.3-0.5. It is mainly used in steel-making enterprises and some casting enterprises for gray cast iron. The disadvantages are low carbon content, slow melting, easy waste of electric energy, and large residual amount.

Steel making with calcined coal and carburizing agent

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