Cov tshuaj desiccants yog cov tshuaj uas nqus cov dej noo los ntawm ib puag ncig, ua rau lawv tseem ceeb hauv ntau yam lag luam rau kev khaws cia qhov zoo ntawm cov khoom thiab cov ntaub ntawv. Ntawm ntau cov tshuaj desiccants muaj, activated alumina sawv tawm vim nws cov khoom tshwj xeeb thiab kev ua tau ntau yam.
Alumina ua kom nquag yog ib hom alumina oxide uas muaj qhov ntxeem tau ntau heev, tsim los ntawm kev kho alumina hydroxide nrog cua sov. Cov txheej txheem no ua rau nws thaj chaw thiab lub peev xwm nqus tau zoo dua, ua rau nws yog ib qho desiccant zoo. Nrog thaj chaw txog li 300 m² / g, alumina ua kom nquag tuaj yeem nqus tau cov pa dej ntau, ua rau nws zoo tagnrho rau cov ntawv thov uas tswj cov dej noo yog qhov tseem ceeb.
Ib qho ntawm cov kev siv tseem ceeb ntawm activated alumina yog nyob rau hauv kev ziab cov roj thiab cov kua. Hauv kev teeb tsa kev lag luam, nws feem ntau siv los tshem tawm cov dej noo ntawm cov cua compressed thiab cov roj ntuj, tiv thaiv kev xeb thiab xyuas kom meej tias cov khoom siv ua haujlwm zoo. Tsis tas li ntawd, activated alumina yog siv rau hauv kev tsim cov tshuaj purity siab thiab cov tshuaj, qhov twg txawm tias me ntsis ntawm cov dej noo tuaj yeem ua rau cov khoom zoo.
Alumina ua kom muaj zog kuj tseem ua lub luag haujlwm tseem ceeb hauv kev lag luam kho dej. Nws muaj txiaj ntsig zoo hauv kev tshem tawm cov tshuaj fluoride thiab arsenic ntawm cov dej haus, ua rau nws yog ib qho khoom muaj nqis hauv cov txheej txheem ntxuav dej. Nws lub peev xwm los nqus cov pa phem thaum tswj hwm qhov leaching qis ua kom ntseeg tau tias cov dej kho tseem muaj kev nyab xeeb rau kev noj.
Ntxiv mus, alumina ua kom rov siv tau dua. Nws tuaj yeem rov ua dua los ntawm kev ua kom sov, cia nws tso cov dej noo uas nqus tau thiab siv dua. Tus cwj pwm no tsis yog ua rau nws pheej yig xwb tab sis kuj zoo rau ib puag ncig, vim nws txo cov khib nyiab uas cuam tshuam nrog cov desiccants siv ib zaug xwb.
Xaus lus, activated alumina yog ib qho desiccant muaj zog nrog ntau yam kev siv thoob plaws ntau yam lag luam. Nws lub peev xwm nqus dej noo, ua ke nrog nws cov khoom siv rov ua dua, ua rau nws yog ib qho cuab yeej tseem ceeb rau kev tswj cov khoom zoo thiab kev nyab xeeb hauv cov chaw noo noo.
Lub sijhawm tshaj tawm: Lub Ob Hlis-13-2025
