Nkọwa dị mkpirikpi:

Calcined petroleum coke bụ ngwaahịa mmanụ ala, na akụrụngwa ya bụ petroleum coke green. A na-eji ya eme ihe na mmepụta nke ngwaahịa carbon dị ka graphite electrode, graphite block na breeki. Enwere ike iji ya dị ka ihe mgbakwunye carbon na ụfọdụ osisi nchara na osisi aluminom. Enwere ike iji ya mee ihe dị ka refractory, ihe mkpuchi ọkụ, ihe ndochi, wdg.
Nkọwa: Carbon edobere 97%, sọlfọ 3.0%, ash 0.6%, na-agbanwe agbanwe 0.6%, mmiri 0.5%,

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