Video: Yuav ua li cas cov impurities nyob rau hauv bauxite tshem tawm?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Cov bauxite yog purified los ntawm Bayer txheej txheem. Ua ntej cov ore yog tov nrog ib tug kub concentrated tov ntawm sodium hydroxide. NaOH yuav yaj cov oxides ntawm txhuas thiab silicon tab sis tsis yog lwm yam impurities xws li hlau oxides, uas tseem insoluble. Cov ntaub ntawv insoluble yog tshem tawm los ntawm kev lim.
Kuj paub, dab tsi impurities muaj nyob rau hauv bauxite?
Qhov loj impurities hauv Bauxite yog hlau oxides ( goethite & hematite ), silicon dioxide , cov av nplaum ntxhia kaolinite raws li qhov me me ntawm anatase (TiO2). Yog li ntawd, nws muaj pes tsawg leeg sib txawv nrog alumina tsim los ntawm li 50% txog 70%.
Ib yam li ntawd, silica raug tshem tawm ntawm bauxite li cas? Ib txheej txheem rau tshem tawm silica los ntawm bauxite yog qhia tawm. Cov txheej txheem suav nrog cov kauj ruam ntawm kev sib xyaw bauxite nrog rau caustic cawv los tsim ib qho sib tov thiab yaj thiab stabilize yam tsawg kawg ib feem ntawm cov reactive. silica los ntawm bauxite.
Kuj tseem paub, bauxite muab rho tawm li cas?
Aluminium ore hu ua bauxite . Cov bauxite yog purified los tsim txhuas oxide, cov hmoov dawb los ntawm txhuas tuaj yeem ua tau rho tawm . Cov rho tawm yog ua los ntawm electrolysis. Cov ions hauv aluminium oxide yuav tsum muaj kev ywj pheej txav kom cov hluav taws xob tuaj yeem dhau los ntawm nws.
Muaj pes tsawg bauxite nyob hauv ntiaj teb?
Txawm hais tias kev thov rau aluminium yog nce sai, bauxite reserves, tam sim no kwv yees li ntawm 40 mus rau 75 billion metric tons, yog npaj yuav kav rau ntau pua xyoo. Guinea thiab Australia muaj ob qhov pov thawj loj tshaj plaws.
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