I-electrode yegraphite enedayamitha encinci lolona khetho lufanelekileyo lokunyibilikisa izicelo kuluhlu olubanzi lwemizi-mveliso efana nekhalsiyam carbide, ukucokiswa kwe-carborundum, okanye ukunyibilikiswa kwesinyithi esinqabileyo, kunye ne-Ferrosilicon plant refractory. Ukuguquguquka, ezi electrode zibonelela ngokusebenza okungahambelaniyo kunye nokusebenza kakuhle.I-electrode ye-graphite enedayamitha encinci, ububanzi busuka kwi-75mm ukuya kwi-225mm