Ningxia high-zoo anthracite (tshwj xeeb tsis tshua muaj tshauv, tsis tshua muaj sulfur, tsis tshua muaj phosphorus, siab ruaj carbon, siab calorific nqi) yog calcined ntawm 1200 ℃, muaj zog oxidation tsis kam, siab mechanical zog, siab tshuaj ua hauj lwm, siab huv coal rov qab npaum li cas thiab lwm yam yam ntxwv. Nws yog tsuas yog siv los ua kom cov pa roj carbon ntau hauv steel ua. Nws txoj haujlwm yog txhawm rau nce qhov kub thiab txias sai, nrog cov txiaj ntsig zoo thiab ruaj khov carbon nqus tus nqi. Nws tuaj yeem siv los kho cov ntsiab lus carbon thiab oxygen cov ntsiab lus ntawm molten steel, hloov nws cov rigidity thiab toughness, thiab yog li txhim kho lub peev xwm nucleation ntawm molten steel thiab sab hauv zoo ntawm billet.
