I-graphite petroleum coke yenziwe nge-petroleum coke esezingeni eliphezulu njengezinto zokusetshenziswa nge-graphitization yokushisa okuphezulu ku-2800-3000 ºC. Inezici zokuqukethwe okuphezulu kwekhabhoni okuqinile, okuqukethwe okuphansi kwesulfure, okuqukethwe okuphansi komlotha kanye nesilinganiso esiphakeme sokumuncwa. Isetshenziswa kabanzi kwezensimbi, ekubunjweni kwensimbi nakwezinye izimboni. Ingasetshenziswa ukukhiqiza insimbi esezingeni eliphezulu, insimbi ekhethekile, ukushintsha izinga lensimbi enamaqhuqhuva kanye nensimbi empunga, futhi ingasetshenziswa njenge-ejenti yokunciphisa embonini yamakhemikhali.
