Graphitized Petrole Coke (GPC) ni ibikoresho by'ibanze mu nganda zibyuma, bikoreshwa cyane nka karubone (recarburizer) mu gukora ibyuma no gutunganya. Ikorwa hifashishijwe ubushyuhe bwo hejuru bwo gushushanya peteroli ya kokiya kuri 2500-3500 ° C, irangwa na karubone nyinshi ihamye, sulfure nkeya, hamwe n’umwanda muke. GPC izwiho umuvuduko mwinshi, imikorere ihamye, hamwe no kugabanya ibintu byangiza nka sulfure na azote mu cyuma gishongeshejwe. Ibi bituma iba ibikoresho byiza byo gukora ibyuma byujuje ubuziranenge, ibyuma, hamwe na alloys.
