Lub hauv paus ntsiab lus ntawm cov txheej txheem bayer rau alumina ntau lawm

Hauv kev tsim cov alumina, cov txheej txheem bayer yog cov thev naus laus zis feem ntau siv thiab ua tau zoo. Nws cov ntsiab cai tseem ceeb yog raws li cov tshuaj tiv thaiv cov yam ntxwv ntawm alumina nrog cov lus lye nyob rau hauv cov xwm txheej sib txawv.

Bauxite tsuas yog muaj alumina hydrates (xws li Gibbeite al (Oh) ₃, Bohmite -alo (Oh), thiab diaspore -alo (Oh)). Nyob rau hauv cov kub thiab siab mob siab, cov alumina hydrates tuaj yeem hnov ​​mob nrog sodium hydroxide (NAOH) kev daws teeb meem. Noj cov gibыbsite raws li ib qho piv txwv, cov tshuaj tiv thaiv kab sib npaug yog: al (Oh (Oh ₄ ₄) ₄ (sodium tetrahyduminate). Tus txheej txheem no hu ua kev zom. Los ntawm kev zom, cov alumina hauv bauxite tau hloov mus rau hauv soduble socum, thaum cov hlau oxide (xws li cov hlau oxide (xws li precipually thiab precipate thiab nag nyob rau hauv daim ntawv ntawm av nkos liab.

Tom qab ntawd, cov tau sodium aluminate daws yog txias thiab do nrog ntxiv cov noob txhuas hydoxide. Nyob rau lub sijhawm no, cov sodium aluminate nyob rau hauv kev daws teeb meem yuav decompose rau regenerate Aluminiumide nag daus yog: Na-Au → al (Oh) ₃↓ + Nao ₃↓. Cov txheej txheem no hu ua nag lossis daus. Alcipitated Aluminiumide yog lim, ntxuav, thiab tom qab ntawd rov ua dua ntawm qhov kub kom decompose thiab tsim alumina. Qhov kev tawm tsam ntawm cov tshuaj tiv thaiv yog: 2al (Oh) → → → → → → → {2}} h₂o.

Qhov kom zoo dua ntawm cov txheej txheem bayer dag nyob rau hauv nws cov txheej txheem yooj yim thiab kev siv hluav taws xob tsawg. Nws yog qhov tsim nyog tshwj xeeb rau kev ua cov baux-qib bauxite thiab nyob nrog txoj haujlwm loj hauv ntiaj teb alumina ntau lawm.

Yog tias koj txaus siab rau peb, thov nyem rau ntawm kab ntawv txuas hauv qab no txhawm rau tshawb nrhiav rau Asmeskas lossis cov khoom koj xav tau ntawm kev ua nyob hauv Suav teb lub vev xaib

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