Dab tsi yog Cov Txheej Txheem Ntau Lawm Ntawm Cryolite?
Cryolite yog siv lead ua tsis muaj xim lossis hmoov, uas yog ib qho tseem ceeb inorganic chemical raw khoom. Nws yog siv los ua ib qho ntxiv rau electrolytic aluminium, flux rau smelting hlau magnesium, thiab titanium. Cryolite yog siv los ua electrolytic da dej tivthaiv nyob rau hauv zus tau tej cov txhuas los txo cov melting point thiab txhim kho cov conductivity ntawm electrolytes. Magnesium fluoride muaj qhov ntsuas qis qis thiab tuaj yeem siv los ua cov khoom siv qis refractive nyob rau hauv photonic crystals vim nws qhov sib txawv ntawm qhov dav nrog cov ntaub ntawv siab refractive index. Cov txheej txheem ntau lawm ntawm cryolite yog dab tsi? Niaj hnub no peb yuav kawm txog nws.
Hydrofluoric acid txoj kev: tuaj yeem muab faib ua txoj kev qhuav thiab txoj kev ntub dej; Txoj kev qhuav yog react gaseous hydrofluoric acid thiab aluminium hydroxide ntawm 400 ~ 700 degree los tsim fluoroaluminic acid (H3A iF6), thiab ces hnov mob nrog dej qab zib tshauv ntawm qhov kub thiab txias los tsim crurite. Txoj kev ntub dej yog npaj cryolite los ntawm reacting 40 ~ 60% hydrofluoric acid nrog aluminium hydroxide thiab tom qab ntawd ntxiv dej qab zib tshauv.
Fluorosilicic acid txoj kev: tuaj yeem muab faib ua ammonium fluoride intermediate khoom thiab sodium fluorosilicate intermediate khoom txoj kev, tus qub yog fluorosilicic acid thiab ammonia dej tom qab ammonia cov tshuaj tiv thaiv nrog sodium aluminate los tsim cryolite. Cov tom kawg yog kev tsim cov phosphorous chiv los ntawm fluorine uas muaj cov pa khib nyiab los ntawm kev rov qab los ntawm sodium fluorosilicate, thiab tom qab ntawd los ntawm kev sib xyaw ammonia thiab lwm cov txheej txheem los tsim cryolite.
Carbonation method: cryolite kuj tuaj yeem npaj tau hauv sodium aluminate thiab sodium fluoride tov nrog carbon dioxide.
Aluminium muaj txoj kev rov qab los: Dilute hydrofluoric acid rov qab los ntawm cov pa khib nyiab ntawm txhuas smelting tuaj yeem rov qab los ntawm kev ua haujlwm nrog sodium aluminate.
Cov txheej txheem Alkali: dej qab zib tshauv, fluorite, silica xuab zeb los ntawm roasting, sib tsoo, leach thiab cov tshuaj tiv thaiv nrog txhuas sulfate, tsis tshua muaj siv hauv kev lag luam.
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