Aluminium oxide chinhu chisina kugadzirwa chine fomura yemakemikari A1203, chinhu chakaoma zvikuru chine poindi yekunyunguduka ye2054°C uye poindi yekufashaira ye2980°C. Ikristaro yeionic inogonayakasanganiswa neayonipakupisa kwakanyanya uye inowanzoshandiswa mukugadzira zvinhu zvinoramba kushanda. Calcined alumina nealumina zvese zvine chinhu chimwe chete, asi nekuda kwemamwe maitiro ekugadzira uye mamwe maitiro akasiyana, saka zviviri izvi mukushandiswa kwekushanda uye saka pachava nemisiyano.
Alumina ndiyo mineral huru yealuminium, inopwanywa yoiswa sodium hydroxide solution inodziya zvakanyanya kuti iwane sodium alumina solution; sefa kuti ibvise zvasara, itonhodze filtrate uye iwedzere makristaro ealuminium hydroxide, mushure menguva yakareba ichikurunga, sodium alumina solution inoora yoita aluminium hydroxide; paradzanisa precipitate woigeza, wozoiisa calcium pa950-1200°C kuti iwane c-type alumina powder, calcium Alumina imhando c-type alumina. Nzvimbo dzekunyunguduka nekufashaira dzakanyanya kukwira.
Calcined alumina hainyungudike mumvura uye acid, inozivikanwawo sealuminium oxide mumaindasitiri, uye ndiyo inonyanya kushandiswa pakugadzira simbi yealuminium; inogona zvakare kushandiswa mukugadzira zvidhinha zvakasiyana-siyana zvinoramba, zvinodzivirira zvinoramba, machubhu anodzivisa kupisa uye zvishandiso zverabhoritari zvinodzivirira kupisa kwakanyanya; inogona zvakare kushandiswa sechinhu chinobvisa moto, chinodzora moto uye chinozadza; calcium alumina ine kuchena kwakanyanya zvakare ndiyo chinhu chakakosha pakugadzira corundum yekugadzira, dombo dzvuku rekugadzira uye dombo rebhuruu; inoshandiswawo pakugadzira mabhodhi emadziro emazuva ano makuru akabatanidzwa. Calcined alumina uye alumina mukugadzirwa uye zvimwe zvinhu zvakasiyana, nzvimbo dzeindasitiri dzinoshanda dzakasiyanawo, saka pakutenga zvigadzirwa usati watanga kutsvaga nzvimbo chaiyo yekushandisa.