Petroleum coke yakagadzirwa negrafiti ine hunhu hwepamusoro inogadzirwa nepetroleum coke ine tembiricha ye2,500-3,500℃. Sechinhu chine kabhoni yakachena, ine hunhu hwekabhoni yakagadzika, sarufa shoma, dota shoma, porosity shoma nezvimwewo. Inogona kushandiswa semugadziri wekabhoni (Recarburizer) kugadzira simbi yepamusoro, simbi yakakandwa uye alloy. Inogona zvakare kushandiswa mupurasitiki nerabha sechinhu chinowedzera.
