Calcined Anthracite is manufactured by exposing high grade anthracite coal in various types of thermal or electrical ovens to temperatures as high as 2000 C, which results in some graphitic development in the finished product.
When to compared to conventional no-calcined anthracite it has low moisture, volatile, and sulfur , hydrogen, and nitrogen content. Calcined coal has become a functional substitute for synthetic graphite in certain foundry and steel mill applications.
Electrically calcined anthracite is used in manufacturing certain electrodes, cathodes, Soderberg pastes, and carbon blocks.