Kookaha batroolka ee garaafka lagu sameeyay waxaa laga sameeyaa kookaha batroolka ee kalcined. Habka ugu muhiimsan waa garaafka foornada garaafka lagu sameeyay. Kookaha batroolka ee garaafka lagu sameeyay waa badeeco dib-u-habayn tayo wanaagsan leh oo leh astaamo nitrogen yar.