Flake graphite los ntawm kev kub siab metamorphism, feem ntau bluish grey, weathered yellowish xim av los yog greyish dawb, feem ntau ua nyob rau hauv neiss, schist, crystalline limestone thiab skarn, symbionic minerals yog complex, lub ntsiab tivthaiv yog flake crystalline crystalline carbon, nrog graphite nyob rau hauv lub ore rau crystalline flake lossis nplooj nplooj, dub lossis steel grey, feem ntau tshwm sim hauv feldspar, quartz lossis diopside, tremolite hais nruab nrab.Nws muaj qhov pom tseeb kev taw qhia, ua raws li cov kev taw qhia ntawm txheej.Flake graphite feem ntau yog ntuj exocrystalline graphite, cov qauv lamellar, nws cov duab zoo li lub nplai ntses, lub hexagonal siv lead ua, lub xeev siv lead ua zoo dua, qhov loj me ntawm txoj kab uas hla yog 0.05 ~ 1.5μm, thickness ntawm daim yog 0.02 ~ 0.05 mm, qhov loj tshaj plaws flake tuaj yeem ncav cuag 4 ~ 5mm, cov ntsiab lus carbon ntawm graphite feem ntau yog li 2% ~ 5% lossis 10% ~ 25%.
Ntau lawm cheeb tsam ntawm flake graphite yog nyob rau hauv Asia, Tuam Tshoj thiab Sri Lanka, Europe lub Ukraine, Mozambique, Madagascar, Tanzania thiab South America lub Brazil thiab lwm lub teb chaws, Mozambique, Tanzania, Madagascar thiab lwm lub teb chaws nplua nuj (super) loj flake graphite, nrog siab. muaj nuj nqis.
Cov "MINERAL COMMODITY SUMMARIES 2021" tso tawm los ntawm US Geological Survey (USGS) qhia tau hais tias thaum kawg ntawm 2020, cov pov thawj ntuj flake graphite reserves nyob rau hauv lub ntiaj teb no yog 230 lab tons, uas Tuam Tshoj, Brazil, Madagascar thiab Mozambique account rau ntau. tshaj 84%.Tam sim no, cov neeg tsim khoom tseem ceeb ntawm ntuj flake graphite yog Tuam Tshoj, Brazil thiab Is Nrias teb.Los ntawm 2011 txog 2016, lub ntiaj teb no zus tau tej cov natural flake graphite tseem nyob ruaj khov ntawm 1.1 txog 1.2 lab t / a.Kev cuam tshuam los ntawm ntau yam, nws tau poob rau 897,000 tons hauv 2017;Hauv 2018, nws maj mam nce mus rau 930,000 t;Hauv 2019, vim qhov nce hauv cov khoom ntawm ntuj flake graphite hauv Mozambique, nws rov qab mus rau 1.1 lab t.Xyoo 2020, Tuam Tshoj flake graphite ntau lawm yuav yog 650,000 tons, suav txog li 59% ntawm lub ntiaj teb tag nrho cov khoom tsim tawm, thiab yog lub ntiaj teb cov neeg tsim khoom loj tshaj plaws;Mozambique flake graphite ntau lawm ntawm 120,000 t, accounting rau 11% ntawm lub ntiaj teb tag nrho cov zis.
Post lub sij hawm: Jun-12-2023