Anthracite Coal vs Bituminous Coal
Coal yog cov roj fossil zoo ib yam li cov nkev thiab roj, uas yog nyob rau hauv cov pob zeb zoo. Coal yog tsim los ntawm kev sau cov nroj tsuag khib nyiab hauv swamps. Cov txheej txheem yuav siv ntau txhiab xyoo. Thaum cog cov ntaub ntawv sau rau ntawm swamps, lawv degrade qeeb heev. Feem ntau cov dej swamp tsis muaj oxygen ntau dua; Yog li ntawd, microorganism ntom ntom muaj tsawg, uas ua rau tsawg kawg degradation los ntawm microorganisms. Nroj tsuag khib nyiab accumulates hauv swamps vim qhov no qeeb qeeb. Thaum cov no tau faus rau hauv cov xuab zeb lossis av nkos, lub siab thiab qhov kub thiab txias hauv cov nroj tsuag hloov mus rau cov thee maj mam. Txhawm rau khaws ntau cov nroj tsuag khib nyiab thiab rau cov txheej txheem decaying, nws yuav siv sij hawm ntev. Tsis tas li ntawd, yuav tsum muaj cov qib dej tsim nyog thiab tej yam kev mob los ua kom qhov no zoo. Yog li, thee raug suav hais tias yog ib qho khoom siv tsis tau txuas ntxiv dua tshiab. Qhov no yog vim hais tias, thaum cov thee raug mined thiab siv, lawv tsis tuaj yeem rov tsim dua yooj yim dua. Muaj ntau hom thee. Lawv raug ranked raws li lawv cov khoom thiab muaj pes tsawg leeg. Cov hom thee no yog peat, lignite, sub bituminous, bituminous thiab anthracite.
Anthracite Coal
Anthracite yog hom thee raws li tau hais los saum toj no. Ntawm lwm yam, qhov no muaj qib siab dua vim nws cov khoom zoo kawg li. Anthracite muaj cov pa roj carbon ntau tshaj plaws, uas yog 87%; yog li ntawd, impurities tsawg dua. Anthracite ua kom muaj cua sov ntau dua ib chav tsev loj dua li lwm hom thee. Nws tsis ignite yooj yim, tab sis thaum nws ua ib qho xiav, cov nplaim taws tsis muaj pa taws yog tsim rau lub sijhawm luv luv. Vim nws tsis tsim cov pa luam yeeb, nws hlawv huv si. Anthracite nyuaj dua li lwm hom thee; yog li ntawd, nws yog hu ua hard thee. Lwm hom coals raug suav hais tias yog pob zeb sedimentary, whereas anthracite yog metamorphic. Anthracite yog tsim thaum lwm yam qis qis qis dua li qhov kub thiab txias nyob rau lub sijhawm ntev. Anthracite kuj tsis tshua muaj thiab muaj nyob rau hauv me me hauv Pennsylvania, America.
Bituminous Coal
Bituminous thee yog hom roj ntau tshaj plaws. Nws yog mos thiab muaj cov khoom hu ua bitumen, uas zoo ib yam li tar. Qhov feem pua ntawm cov pa roj carbon nyob rau hauv bituminous thee yog feem ntau ntawm 77-87%. Thiab muaj dej, hydrogen, sulfur thiab ob peb lwm yam impurities. Qhov no tuaj yeem muab faib ua peb yam li tsawg-volatile bituminous, nruab nrab volatile bituminous thiab siab volatile bituminous, raws li lawv cov ntsiab lus volatile. Bituminous thee yog tsim los ntawm sub bituminous thee thaum nws nkag mus rau ntau cov organic metamorphism.
Qhov txawv ntawm Anthracite thiab Bituminous Coal yog dab tsi?
• Anthracite muaj qhov zoo dua li cov thee bituminous. Piv txwv li, anthracite yog ib qho nyuaj, tsim ntau zog thaum hlawv, tsis ignite yooj yim, muaj ib tug tsawg tus nqi ntawm impurities thiab ib tug ntau dua carbon feem pua piv rau bituminous thee. Bituminous thee muaj 77-87% carbon, whereas anthracite thee muaj ntau tshaj 87% carbon.
• Bituminous thee tuaj yeem hloov mus rau anthracite nrog lub sijhawm. Cov txheej txheem no hu ua anthracitization.
• Bituminous thee yog pob zeb sedimentary, whereas anthracite yog metamorphic pob zeb.
• Bituminous muaj ntau dua li anthracite.
