Kaarboon-ku-darka Graphite GPC Graphite Petroleum Coke ee Samaynta Birta
Coke batroolka oo la sawiray ayaa laga sameeyay kookaha batroolka oo tayadiisu sareyso heerkulkiisu yahay 2800ºC. Oo, waxaa si weyn loo isticmaalaa sida recarburizer for soo saaridda bir tayo sare leh, birta gaarka ah ama warshadaha kale ee macdan la xiriira, sababta oo ah ay content carbon go'an sare, content baaruud hoose, nitrogen hoose, iyo heerka nuugista sare.
