Iimpawu eziphambili ze-graphite petroleum coke zimi ngolu hlobo lulandelayo: umxholo wokufuma ngaphantsi kwe-0.5%, isulfure ngaphantsi kwe-0.05%, i-phosphorus phakathi kwe-0.04-0.01, i-hydrogen nitrogen ngaphantsi kwe-100% ppm. Umxholo wekhabhoni ophezulu wobungakanani bamasuntswana uphakathi, i-porosity iya kuba nkulu kakhulu, isantya sokufunxa sikhawuleza, kwaye ukubunjwa kwayo kweekhemikhali kumsulwa, izinga lokufunxa liya kuba phezulu. Ubungakanani besuntswana 0-5mm, 1-5mm, 0-10mm, njl., inokuqhutywa ngokweemfuno zabathengi
