Kugadzira ndiyo nzira yekutanga yekurapa kupisa kwepetroleum coke. Kazhinji, tembiricha yekurapa kupisa kwakanyanya inenge 1,300℃. Chinangwa chayo ndechekubvisa tsvina yakaita semvura, zvipembenene, sarufa nehydrogen mupetroleum coke, uye kuona shanduko yechimiro uye hunhu hwefizikisi yezvinhu zvakasiyana-siyana zvekabhoni. Nzira iyi inogona kuderedza huwandu hwehydrogen muzvigadzirwa zvepetroleum coke zvekugadzirisa uye kuvandudza mwero wegraphitization, nokudaro ichivandudza simba rayo remakanika, density, conductivity yemagetsi uye resistance ye oxidation.
