Aluminium oxide waa walxo aan organic ahayn oo leh qaacidada kiimikada A1203, iskudhis aad u adag oo leh barta dhalaalaysa 2054°C iyo barta karkaraya 2980°C.Waa crystal ionic oo noqon karaionizedHeerkulka sare waxaana caadi ahaan loo isticmaalaa soo saarista walxaha dib-u-celinta.Calcined alumina iyo alumina labaduba waxay ka kooban yihiin walxo isku mid ah, laakiin sababtoo ah hababka wax soo saarka qaarkood iyo kala duwanaanshiyaha habka kale, si ay labaduba u isticmaalaan waxqabadka iyo sidaas darteed waxaa jiri doona kala duwanaansho.
Alumina waa macdanta ugu muhiimsan ee aluminium ee dabiiciga ah, waa la burburin doonaa oo lagu dhejin doonaa heerkulka sare ee sodium hydroxide si loo helo xal sodium alumina;shaandheynta si loo soo saaro haraaga, qabooji shaandhada oo ku dar aluminium hydroxide crystals, ka dib wakhti dheer oo walaaqaya, xalalka alumina ee sodium ayaa jajabin doona oo kicin doona aluminium hydroxide;Kala saar waxa soo daadanaya oo maydh,kadib ku soo celi 950-1200C si aad u hesho budada alumina nooca c-nooca, Alumina calcined waa c-nooca alumina.Dhibcaha dhalaalka iyo karkarinta ayaa aad u sarreeya.
Calcined alumina waa mid aan lagu milmi karin biyaha iyo aashitada, sidoo kale loo yaqaan aluminium oxide ee warshadaha, waana alaabta aasaasiga ah ee wax soo saarka birta aluminium;waxa kale oo loo isticmaali karaa in lagu soo saaro leben kala duwan oo dib-u-soo-celin ah, qalab-celin-celin-celin ah, tuubo-celin-celin ah iyo qalabka shaybaarka ee heerkulka sare u adkaysta;Waxa kale oo loo isticmaali karaa sidii abrasive, olol retardanant iyo buuxinta;nadiifinta sare calcined alumina sidoo kale waa alaabta ceeriin ee wax soo saarka corundum macmal ah, dhagax sayid cas cas macmal ah iyo dhagax sayid buluug;waxa kale oo loo isticmaalaa soo saarida substrates board-ka loogu talagalay wareegyada isku dhafan ee baaxadda weyn ee casriga ah.Calcined alumina iyo alumina ee habka wax soo saarka iyo dhinacyo kale ayaa ku jira farqi yar, meelaha warshadaha lagu dabaqi karo ayaa sidoo kale ka duwan, sidaas darteed iibsashada alaabta ka hor inta aan la helin marka hore si loo ogaado meelaha gaarka ah ee isticmaalka.