Anthracite tayo sare leh oo Ningxia ah (dambas yar oo gaar ah, baaruud yar, fosfooraska yar, kaarboon go'an oo sarreeya, qiimo kaloori sare) ayaa lagu shubaa 1200 ℃, iyadoo leh iska caabin oksaydh oo xooggan, xoog farsamo oo sarreeya, firfircooni kiimiko oo sarreeya, heerka soo kabashada dhuxusha nadiifka ah oo sarreeya iyo astaamo kale. Waxaa inta badan loo isticmaalaa in lagu kordhiyo kaarboonka sameynta birta. Shaqadeedu waa inay si dhakhso ah u kordhiso heerkulka, iyadoo leh saameyn wanaagsan iyo heerka nuugista kaarboonka oo deggan. Waxaa loo isticmaali karaa in lagu hagaajiyo kaarboonka iyo heerka oksijiinta ee birta dhalaalaysa, la beddelo adkaanteeda iyo adkaysigeeda, sidaas darteedna loo hagaajiyo awoodda nucleation ee birta dhalaalaysa iyo tayada gudaha ee billet.
