Ningxia apamwamba anthracite (wapadera otsika phulusa, otsika sulfure, otsika phosphorous, mkulu atakhazikika mpweya, mkulu calorific mtengo) ndi calcined pa 1200 ℃, ndi kukana amphamvu makutidwe ndi okosijeni, mkulu makina mphamvu, mkulu mankhwala ntchito, mkulu woyera malasha kuchira mlingo ndi zina. makhalidwe. Amagwiritsidwa ntchito makamaka kuonjezera carbon popanga zitsulo. Ntchito yake ndikukweza kutentha mwachangu, ndi zotsatira zabwino komanso kukhazikika kwa mayamwidwe a kaboni. Itha kugwiritsidwa ntchito kusintha zomwe zili mu kaboni ndi mpweya wa chitsulo chosungunula, kusintha kulimba kwake komanso kulimba kwake, motero kukulitsa luso la nucleation lachitsulo chosungunuka ndi mkati mwa billet.