Isicelo*Isengezo sekhabhoni embonini ye-metallurgical;* Impahla eluhlaza ye-graphite electrode nokunamathisela kwe-electrode;*Ukukhiqiza i-anode ye-electrolytic aluminium;*Ukuncibilika kwe-silicon yezimboni;*Ukugcwaliswa kwesithando somlilo esine-graphite