Cov khoom siv tseem ceeb ntawm Activated alumina aluminium hydroxide (gibarta, boehmite, thiab lwm yam) - cov khoom tau los ntawm cov tshuaj lom neeg hauv Bayer proces.
Aluminium hydroxide tau kho los ntawm kev txais calcination hauv qhov cub ib puag ncig. Cov theem calcination no ua rau lub cev qhuav dej, lossis tshem tawm cov dej noo ntawm cov txhuas hydroxide thiaj li yuav tsim cov alumina, lossis aluminium oxide (Al2O3).
Kev ua kom yog yog kauj ruam tseem ceeb rau kev qhib alumian. Kev ua kom zoo li theem uas alumina tus qauv ua rau muaj qhov kub siab heev, tshwm sim nyob rau hauv qhov ntsuas kub tshwj xeeb, nrog cov txheej txheem tsis xws li chaw nyob lub sijhawm thiab qhov kub thiab txias profile siv los tswj cov khoom ntawm cov khoom kawg. Kev ua kom zoo nkauj kuj tseem tuaj yeem cuam tshuam rau cov yam ntxwv ntawm qhov khoom kawg.
Agglomeration yog ib qho tseem ceeb heev rau kev ua kom muaj alumina. Qhov no yog qhov tseeb tshwj xeeb tshaj yog thaum ua haujlwm nrog adsorbents thiab catalysts.
Lub agglomeration ntawm qhib alumina pub rau qib siab ntawm kev kho kom haum rau cov ntawv thov tshwj xeeb. Cov yam ntxwv uas feem ntau tswj tau los ntawm kev ua agglomeration suav nrog:
Kev faib raws qhov loj me
Ntau tuab
Tsoo lub zog
Ntau npaum li cas ntawm qhov tsis sib xws / qhov xav tau ntawm cov plua plav tiam
Flowability
Muaj ntau txoj hauv kev los tsim alumina "hlaws," raws li lawv feem ntau hu ua, nrog qee cov kev xaiv nrog rau kev siv cov agglomerator, tus pin tov khoom, disc pelletizer, lossis cov sib xyaw.
Rau ntau yam laj thawj, kev sim feem ntau yog ib qho tseem ceeb hauv txoj kev ua tiav ntawm kev ua kom rov qab alumina uas ua tau raws li lub siab xav. Nws feem ntau yuav tsum tau kuaj xyuas qhov ntsuas kub ntawm kev ua haujlwm ntawm alumina ntau lawm siv cov khoom txaij- thiab cov nplai sim ua nplai. Tsis tas li ntawd, nws tau pom zoo kom sim ntau txoj hau kev ntawm agglomeration, nrog rau cov neeg tuaj yeem yuav tuaj yeem sau cov txheej txheem cov ntaub ntawv tsim nyog los tsim cov agglomerate nrog cov yam ntxwv uas yuav tsum tau ua.
Vim nws lub peev xwm raws li adsorbent, desiccant, thiab catalyst, qhib alumina yog cov khoom muaj txiaj ntsig hauv ntau cov txheej txheem kev lag luam. Ua los ntawm kev ua kom muaj aluminium oxide uas ua los ntawm Bayer txheej txheem ntawm calcination, ua kom muaj alumina zoo nkauj tau yooj yim thiab feem ntau agglomerated los txhim kho kev ua tau zoo thiab tuav cov yam ntxwv. Kev kuaj qhov ua tau yog feem ntau muaj txiaj ntsig zoo thaum ua haujlwm nrog qhib cov khoom siv alumina.
Xaiv alumina activated, thov yuav tsum xaiv XR activated alumina rau txuag koj cov nyiaj thiab sijhawm.
