Ko te kauwhata tihorea na roto i te ahua o te pehanga teitei, he kikorangi te hina, he kowhai parauri he ma te hina, he mea hanga i roto i te neiss, schist, kirikiri kowhatu me te skarn, he uaua ake nga kohuke symbionic. he koha mo te tawerewere tioata, te ahua rau ranei, he pango, he rino hina ranei, kei roto i te feldspar, te kiripaka, te diopside ranei, nga matūriki tremolite i waenga.E kitea ana te whakatakotoranga aronga, e rite ana ki te ahunga o te paparanga.Ko te graphite flake te nuinga o te graphite exocrystalline taiao, he hanganga lamellar, he rite tona ahua ki te tauine ika, he punaha karaihe hexagonal, he pai ake te ahua o te karaihe, he 0.05 ~ 1.5μm te rahi o te matūriki, he 0.02 ~ 0.05 te matotoru o te waahanga. mm, te tawerewere nui taea tae 4 ~ 5mm, te ihirangi waro o te kauwhata ko te tikanga e pā ana ki 2% ~ 5% ranei 10% ~ 25%.
Ko te nuinga o nga waahi whakaputa o te kauwhata tawerewere kei roto i Ahia, Haina me Sri Lanka, Ukraine o Uropi, Mozambique, Madagascar, Tanzania me Amerika ki te Tonga o Brazil me etahi atu whenua, Mozambique, Tanzania, Madagascar me etahi atu whenua whai rawa (super) graphite flake nui, me te teitei. uara ahumahi.
Ko te "MINERAL COMMODITY SUMMARIES 2021" i tukuna e te US Geological Survey (USGS) e whakaatu ana i te mutunga o te tau 2020, ko nga rahui kauwhata taapii maaori kua whakamatauhia i te ao he 230 miriona taranata, kei a Haina, Brazil, Madagascar me Mozambique etahi atu korero. neke atu i te 84%.I tenei wa, ko Haina, Brazil me Inia nga kaihanga matua o te graphite tawerewere.Mai i te tau 2011 ki te tau 2016, i mau tonu te hanga o te kauwhata tawerewere o te ao ki te 1.1 ki te 1.2 miriona t/a.I pangia e te maha o nga ahuatanga, ka heke ki te 897,000 tone i te tau 2017;I te tau 2018, ka piki ata ki te 930,000 t;I te tau 2019, na te pikinga o te tuku graphite flake maori i Mozambique, ka hoki ki te 1.1 miriona t.I te tau 2020, ka 650,000 tone te hanga kauwhata tawerewere a Haina, e 59% o nga hua katoa o te ao, a ko ia te kaihanga nui rawa atu o te ao;120,000 t te hanga kauwhata tawerewere o Mozambique, e 11% o nga hua katoa o te ao.
Wā tuku: Hune-12-2023