Calcined Petroleum Coke chigadzirwa che raw petroleum coke mushure mekuiswa calcium pa 1300℃ tembiricha. Mukuita kwe calcination, chimiro uye kuumbwa kwezvinhu zvakasiyana-siyana zve carbonaceous zvakachinja zvakanyanya, izvo zvinobvisa hunyoro uye volatile matter mu petroleum coke, zvinovandudza huwandu uye simba remakanika ezvigadzirwa, uye zvinovandudza electrical conductivity uye antioxidant properties ye raw petroleum coke.