Petroleum coke is defined as a black solid residue, obtained mainly by cracking and carbonising of petroleum derived feedstocks, vacuum bottoms, tar and pitches in processes such as delayed coking or fluid coking Fixed carbon: 98% / 97% / 96% / 95%Sulphur: 0.05% Size: 0-1-10mm. CPC, carbon additive, carburizer, carbon raiser, carburant.