Graphitized Petroleum Coke (GPC) chinhu chakakosha mbishi muindasitiri yesimbi, inoshandiswa zvakanyanya sekabhoni raiser (recarburizer) mukugadzira simbi nekukanda maitiro. Iyo inogadzirwa kuburikidza nepamusoro-tembiricha graphitization yepetroleum coke pa2,500-3,500 ° C, inoratidzirwa neyakagadzika kabhoni yemukati, yakaderera sarufa, uye yakaderera kusvibiswa mazinga. GPC inozivikanwa nekukwira kwayo kunyudza mwero, kuita kwakagadzikana, uye kugona mukudzikisa zvinhu zvinokuvadza sesarufa nenitrogen musimbi yakanyungudutswa. Izvi zvinoita kuti ive chinhu chakanakira kugadzira chemhando yepamusoro simbi, simbi yakakandwa, uye alloys.
