Alumina, tshuaj Al2O3. Nws yog ib hom ntawm siab hardness compound. Nws lub ntsiab lus melting yog 2054 ℃, kub taw tes yog 2980 ℃, thiab nws tuaj yeem raug ionized ntawm qhov kub. Nws yog feem ntau siv los ua kev refractories. Nws tseem hu ua bauxite hauv kev khawb, ceramics thiab khoom siv science.
Cov Khoom: insoluble dawb khoom, tsw, tsis qab, tsis qab, tsis yooj yim, nqus yooj yim kom ya raws tsis muaj ntxhiab tsw (tsis yog hygroscopic tom qab hlawv). Amphoteric oxide, soluble hauv inorganic acid thiab kua alkaline, yuav luag tsis muaj kev tiv thaiv hauv cov dej thiab cov pa uas tsis yog-polar organic solvent; ntu ceev ntawm tus txheeb ze (d204) 4.0; yaj kis 2050 ℃.
Cia: muab ntim thiab qhuav. SCRC100009。
Siv: siv raws li kev xav tshuaj reagent, lub cev qhuav dej ntawm cov kuab tshuaj organic, adsorbent, organic cov tshuaj tiv thaiv catalyst, abrasive, polishing tus neeg sawv cev, raw khoom rau aluminium smelting thiab refractory.
