Nws yog ib tug high-hardness ntxhia coal ntawm zoo carbon ntsiab lus. Nws yog tsim, zoo li tag nrho cov ntxhia coals, los ntawm cov txheej txheem qeeb (millions xyoo) ntawm cov nroj tsuag hloov los ntawm cov nyhuv ntawm lub siab thiab kub. Nws yog qhov kawg ntawm qhov ntsuas ntawm Cobonus, thiab qhov kub thiab siab xav tau ntau dua. Nws yog dub thiab ci, feem ntau ntom thiab nyuaj ntawm carbons, nrog cov pa roj carbon ntau (ntau dua 95%).
Anthracite yog cov khoom siv lim dej zoo tshaj plaws rau kev qhia dej hauv kev haus lossis kev lag luam, thaum siv ua ke nrog cov xuab zeb lim dej. Nws yog ib qho ntawm feem ntau siv lim xov xwm. Nws yog ib qho zoo ntxiv rau cov lim dej sib xyaw, hauv cov tuam txhab ntawm cov xuab zeb lossis ntsuab manganese xuab zeb. Vim qhov tshwj xeeb zoo ntawm nws cov nplej, nws tso cai rau cov khoom tshem tawm kom khaws cia hauv qhov tob ntawm lub txaj lim dej. Muab piv rau cov xuab zeb lim, qhov nruab nrab lim dej no tso cai rau cov dej ntws ntau dua, tsis tshua muaj siab poob thiab rov qab zoo dua thiab sai dua.
Anthracite lim cov ntaub ntawv tshwj xeeb yog xaiv los ntawm cov mines sib sib zog nqus nrog feem pua ntawm cov pa roj carbon ntau tshaj.
Kev lim dej tuaj yeem ua tiav los ntawm ib lub txaj lim lossis ob peb qhov sib tshooj. Nyob rau hauv lub txaj multilayer, ib txwm, qhov tsawg ntom lim tawm xws li anthracite yog muab tso rau ntawm sab sauv, ua piv txwv tias cov khib nyiab khaws cia hauv thaj tsam ntawm lub txaj. Tom qab thawj txheej ntawm cov khoom zoo tshaj plaws, xws li cov xuab zeb, nws ua raws li lwm txheej ntawm coarser xuab zeb, ib txheej ntawm gravel zoo thiab thaum kawg ib txheej gravel tuab raws li kev txhawb nqa. Anthracite yog tus cwj pwm los ntawm kev txhim kho txhim khu kev qha hauv turbidity extraction, feem ntau ua tsaug rau nws lub peev xwm ntau dua los khaws cov khib nyiab.