Tom qab theem coalification (tsim ntawm subbituminous thee, bituminous thee, thiab anthracite) tshwm sim los ntawm tob faus thiab raug cov organic teeb meem rau qhov kub thiab txias ntau dua piv rau cov uas tau ntsib los ntawm xim av coals thiab lignite.
sub-bituminous yog dab tsi?
Sub-bituminous thee yog qib qis ntawm cov thee uas muaj 35-45% carbon Cov khoom ntawm hom no yog nyob nruab nrab ntawm cov lignite, qib qis tshaj ntawm cov thee, thiab cov bituminous thee, qhov thib ob qib siab tshaj ntawm cov thee. Sub-bituminous thee feem ntau yog siv los ua roj rau lub zog hluav taws xob.
Qhov twg sub-bituminous thee pom?
Nws tau kwv yees tias ze li ib nrab ntawm lub ntiaj teb cov pov thawj thee khaws cia yog tsim los ntawm subbituminous thee thiab lignite, suav nrog cov tso nyiaj hauv Australia, Brazil, Canada, Tuam Tshoj, Lub teb chaws Yelemees thiab lwm lub tebchaws nyob sab Europe sab hnub poob, Russia, Ukraine, thiab Tebchaws Meskas.
Kev siv cov sub-bituminous thee yog dab tsi?
Subbituminous coals yog ib hom thee uas nws cov khoom muaj xws li cov lignite mus rau cov bituminous thee thiab feem ntau yog siv raws li roj rau lub zog hluav taws xob.
Yuav ua li cas anthracite thee tsim?
Anthracite thee forms thaum bituminous thee undergoes qib qis metamorphism, nrog rau cov qauv deformation. Cov pa roj carbon monoxide ruaj khov nyob rau hauv cov xwm txheej no nce mus txog 85-95%. Yog tias anthracite metamorphosed ntxiv nws hloov mus ua graphite.
