I-Calcined Petroleum Coke isetyenziswa kakhulu ekunyibilikiseni isinyithi esitshisiweyo kunye nasekunyibilikiseni isinyithi esitshisiweyo esitshisiweyo kwiintsimbi ezingezizo i-ferrous ezifana ne-copper, i-lead, i-zinc, i-titanium, kunye ne-antimony.