Metallurgical coal

Coke is an essential fuel and reactant in the blast furnace process for primary steelmaking.

Primary steelmaking companies often have a division that produces coal for coking, to ensure a stable and low-cost supply.

[7] Metallurgical coal is low in ash, moisture, sulfur and phosphorus content, and its rank is usually bituminous.

Metallurgical coal produces strong, low-density coke when it is heated in a low-oxygen environment.

On heating, the coal softens, and volatile components evaporate and escape through pores in the mass.

Raw coke
Eighteenth-century coke blast furnaces in Shropshire , England