Coke ya calcium ikhoza kugawidwa m'magulu awiri: coke ya sulfure yokhala ndi sulfure yoposa 3%, ndi coke ya sulfure yochepa, yomwe ndi sulfure yochepera 3%. Coke ya calcium ya calcium yotsika mtengo imagwiritsidwa ntchito makamaka poyenga silicon yamafakitale ndikupanga mapulasitiki a anode. Coke ya sulfure yambiri nthawi zambiri imagwiritsidwa ntchito ngati mafuta m'mafakitale a simenti ndi m'mafakitale amagetsi.