Coke-ga batroolka ee Calcined Petroleum waxaa inta badan loo isticmaalaa aluminium-ka elektrolytic-ga ah ee hore loo dubay iyo koollada, warshadaha kaarboonku waxay soo saaraan wakiil kaarboon oo kordhay, electrode graphite, shidaalka silicon warshadaha iyo dhalaalinta iwm.