Coke, solid residue remaining after certain types of bituminous coals are heated to a high temperature out of contact with air until substantially all of the volatile constituents have been driven off. The residue is chiefly carbon, with minor amounts of hydrogen, nitrogen, sulfur, and oxygen. Also present in coke is the mineral matter in the original coal, chemically altered and decomposed during the coking process.

coke Coke. Stahlkocher

Read More on This Topic coal utilization: Types and sizes of coke During the last hours in the ovens, the coke shrinks and fissures. When it is discharged, it is partly in discrete pieces up to 200 millimetres...