Anthracite yapamwamba ya Ningxia (phulusa lochepa, sulfure yochepa, phosphorous yochepa, kaboni wokhazikika, ndi mphamvu yamagetsi yapamwamba) imasungunuka pa 1200 ℃, yokhala ndi mphamvu ya okosijeni, mphamvu yamakina apamwamba, ntchito yamankhwala ambiri, mphamvu yobwezeretsa malasha oyera komanso makhalidwe ena. Imagwiritsidwa ntchito makamaka kuonjezera kaboni popanga chitsulo. Ntchito yake ndikukweza kutentha mwachangu, ndi zotsatira zabwino komanso kukhazikika kwa kuyamwa kwa kaboni. Ingagwiritsidwe ntchito kusintha kuchuluka kwa kaboni ndi mpweya wa chitsulo chosungunuka, kusintha kuuma kwake ndi kulimba kwake, motero kukonza mphamvu ya nucleation ya chitsulo chosungunuka ndi khalidwe lamkati la billet.
