Flake grafite na metamorphism yumuvuduko ukabije, mubisanzwe ubururu bwijimye, ikirere cyumuhondo cyumuhondo cyijimye cyangwa cyera cyera, ahanini bikozwe muri neiss, schist, kristaline limestone na skarn, amabuye y'agaciro ya symbionic aragoye cyane, igice nyamukuru ni flake kristaline kristaline, iherekejwe na grafite muri ubutare bwa kristaline flake cyangwa imiterere yamababi, umukara cyangwa ibyuma byijimye, cyane cyane biboneka muri feldspar, quartz cyangwa diopside, uduce duto twa titolite hagati.Ifite icyerekezo kigaragara cyerekezo, gihuza nicyerekezo cyurwego.Flake grafite ahanini ni gracite isanzwe ya exocrystalline, imiterere ya lamellar, imiterere yayo ni nkubunini bwamafi, sisitemu ya kirisiti ya hexagonal, imiterere ya kristu ni nziza, ubunini bwa diameter ni 0.05 ~ 1.5μm, ubunini bwigice ni 0.02 ~ 0.05 mm, flake nini irashobora kugera kuri 4 ~ 5mm, karubone ya grafite muri rusange igera kuri 2% ~ 5% cyangwa 10% ~ 25%.
Agace gakorerwamo flake grafite gaherereye cyane cyane muri Aziya, Ubushinwa na Sri Lanka, Ukraine y’Uburayi, Mozambike, Madagasikari, Tanzaniya na Berezile yo muri Amerika yepfo ndetse n’ibindi bihugu, Mozambike, Tanzaniya, Madagasikari n’ibindi bihugu bikize (super) binini bya flake, bifite hejuru agaciro k'inganda.
"MINERAL COMMODITY SUMMARIES 2021" yashyizwe ahagaragara n’ubushakashatsi bw’Amerika muri Jewoloji (USGS) yerekana ko mu mpera za 2020, ububiko bw’ibinyabuzima bwa flake bwagaragaye ku isi ari toni miliyoni 230, muri zo Ubushinwa, Burezili, Madagasikari na Mozambike bingana na byinshi. hejuru ya 84%.Kugeza ubu, abatunganya ibicuruzwa bya flake bisanzwe ni Ubushinwa, Burezili n'Ubuhinde.Kuva mu 2011 kugeza 2016, umusaruro w’isi yose ya grake ya grake yagumye uhagaze neza kuri miliyoni 1,1 kugeza kuri miliyoni 1.2 t / a.Yatewe nuruhererekane rwibintu, yagabanutse kugera kuri toni 897.000 muri 2017;Muri 2018, yazamutse buhoro buhoro igera kuri t 930.000;Muri 2019, kubera ubwiyongere bw'itangwa rya grake naturel ya flake muri Mozambike, yagarutse kuri toni miliyoni 1.1.Muri 2020, Ubushinwa bwa flake grafite buzaba toni 650.000, bingana na 59% by’umusaruro rusange ku isi, kandi n’umusaruro munini ku isi;Mozambique flake grafite yakozwe na 120.000 t, bingana na 11% byumusaruro wisi.
Igihe cyo kohereza: Jun-12-2023