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Mtengo ndi kugwiritsa ntchito mchere wa bauxite, aluminiyamu ore.

Gulani bauxite yachilengedwe m'sitolo yathu

Ma bauxite ndi mchere wa sedimentary wokhala ndi aluminium wochuluka kwambiri. Ndilo gwero lalikulu la aluminiyamu ndi gallium padziko lapansi. Mwalawu umapangidwa makamaka ndi mchere wa aluminium, gibbsite, boehmite ndi diaspore, wosakanikirana ndi zitsulo ziwiri zachitsulo, goethite ndi hematite, aluminium mineral kaolinite, ndi anatase ochepa ndi ilmenite.

maphunziro

Njira zambiri zopangira bauxite zaperekedwa.

Vadász (1951) adasiyanitsa miyala ya latetitic (silicate) kuchokera ku karst bauxite (carbonate):

• Ma carbonate bauxite amapezeka makamaka ku Ulaya, Guyana, ndi Jamaica pamwamba pa miyala ya carbonate (laimu ndi dolomite), kumene amapangidwa ndi nyengo yotsalira komanso kusonkhana kwa dongo losakanikirana - dongo lomwazikana - lomwe linakhazikika pamene miyala ya laimu yozungulira imasungunuka pang'onopang'ono panthawi ya mankhwala. nyengo.
• Miyala yam'mbuyo imapezeka makamaka m'mayiko otentha. Amapangidwa chifukwa cha peritization ya miyala ya silicate yosiyanasiyana monga granite, gneiss, basalt, syenite ndi schist. Poyerekeza ndi ma lateites okhala ndi chitsulo, mapangidwe a miyalayi amadalira kwambiri nyengo yanyengo m'dera lomwe lili ndi ngalande zabwino kwambiri. Izi zimapangitsa kuti kaolinite isungunuke komanso kuti gibbsite iwonongeke. Madera okhala ndi aluminiyamu kwambiri nthawi zambiri amakhala pansi pa chitsulo. Aluminiyamu hydroxide mu latitic madipoziti pafupifupi yekha gibbsite.

Pankhani ya Jamaica, kusanthula kwa nthaka kwaposachedwa kwawonetsa kuchuluka kwa cadmium, kutanthauza kuti miyalayi imachokera ku phulusa laposachedwa la Miocene kuchokera ku zochitika za kuphulika kwamphamvu ku Central America.

bauxite wochokera ku australia

Kupanga

Australia ndiye omwe amapanga kwambiri, ndikutsatiridwa ndi China. Mu 2017, China inali yaikulu kwambiri yopanga aluminiyamu, yomwe imapanga pafupifupi theka la kupanga padziko lonse lapansi, kutsatiridwa ndi Russia, Canada ndi India.

Ngakhale kuti kufunikira kwa aluminiyamu kukukulirakulira, nkhokwe zodziwika za miyala ya miyala ndizokwanira kukwaniritsa kufunika kwa aluminiyamu padziko lapansi kwa zaka mazana ambiri. Kuchulukitsa kukonzanso kwa aluminiyamu, komwe kuli ndi mwayi wotsitsa mtengo wamagetsi opanga aluminiyamu, kudzakulitsa kwambiri masheya apadziko lonse lapansi.

Kugwiritsa ntchito komanso kufunikira kwa bauxite ndi machiritso

Gawo lotsatirali ndi sayansi yabodza komanso yozikidwa pazikhulupiliro za chikhalidwe.

Ntchito ndi kufunika kwa bauxite

Mwalawu ukhoza kugwiritsidwa ntchito posinkhasinkha ndipo ukhoza kukuthandizani pazochitika zomwe zingakuvutitseni.

Zingakuthandizeninso kudziwa zolinga za ena. Zimadziwika kuti zimathandiza kuwonjezera kumverera kwachisangalalo ndikukhala bwino.

Sichichita nthawi yomweyo, koma ngati chisungidwa pafupi, mphamvu zake zimakhala ngati zolimbikitsa pakapita nthawi.

Pokuthandizani kumasula zomwe zikukulepheretsani kukwaniritsa zomwe mukufuna, zitha kukuthandizani kumasula malingaliro omwe amakukwiyitsani kapena kukwiyira zochitika za moyo.

bauxite pansi pa microscope

FAQ

Kodi bauxite ndi chiyani?

Mwalawu umagwiritsidwa ntchito popanga aluminiyamu, yomwe pambuyo pake amapangira aluminiyamu. Zinyalala zitha kupangidwa pazigawo zingapo zopangira, kuphatikiza migodi ya ore ndi kukonza.

Kodi bauxite amapangidwa bwanji?

Mwala wamtengo wapataliwu umapangidwa ndi nyengo yosamala ya miyala yosiyanasiyana. Mchere wa dongo nthawi zambiri umakhala wapakatikati, koma miyala ina imawoneka ngati yosungidwa ndi ma depositi amankhwala m'malo mosintha zinthu zosavuta. Ikhoza kusandulika kukhala laterite kapena dongo mopingasa komanso molunjika.

Kodi bauxite amawoneka bwanji?

Nthawi zambiri zimakhala zofewa zokhala ndi kuuma kwa 1 mpaka 3 pamlingo wa Mohs. Ndi yoyera mpaka imvi mpaka kufiira bulauni, yokhala ndi mawonekedwe a pisolite, mtundu wapadziko lapansi, ndi mphamvu yokoka yotsika ya 2.0 mpaka 2.5.

Kodi bauxite ndi mtundu wanji?

Mwalawu ndi wofiirira, woyera, wonyezimira komanso wachikasu. Kuwala kwake kumakhala kopanda dothi ndipo kumatha kukhala ndi mawonekedwe a dongo kapena nthaka.

Ndi dziko liti lomwe lili ndi bauxite kwambiri?

Mu 2020, Australia idatulutsa ndalama zambiri padziko lonse lapansi. Dzikoli latulutsa matani 110 miliyoni chaka chino. Pambuyo pa Australia kunali Guinea, yomwe inakumba matani 82 miliyoni a miyala.

Ndimagulitsa bauxite zachilengedwe m'sitolo yathu

Timapanga mphete zaukwati za bauxite, mikanda, ndolo, zibangili, zolembera… Chonde titumizireni kuti mupeze mtengo.