I-anthracite esezingeni eliphezulu ye-Ningxia (umlotha ophansi ohlukile, i-sulfur ephansi, i-phosphorus ephansi, ikhabhoni eqinile ephezulu, inani eliphezulu lama-calories) i-calcium ku-1200 ℃, ngokumelana okunamandla kwe-oxidation, amandla aphezulu okusebenza, umsebenzi ophezulu wamakhemikhali, izinga eliphezulu lokubuyisa amalahle ahlanzekile nezinye izici. Isetshenziswa kakhulu ukwandisa ikhabhoni ekwenzeni insimbi. Umsebenzi wayo ukukhulisa izinga lokushisa ngokushesha, ngomphumela omuhle kanye nezinga elizinzile lokumuncwa kwekhabhoni. Ingasetshenziswa ukulungisa okuqukethwe kwekhabhoni kanye nokuqukethwe kwe-oxygen kwensimbi encibilikisiwe, ukushintsha ukuqina kwayo nokuqina, ngaleyo ndlela ithuthukise ikhono le-nucleation lensimbi encibilikisiwe kanye nekhwalithi yangaphakathi ye-billet.
