I-alumina spinel ecebile ye-powder ifaneleka kuma-castable aphikisayo wesistimu ye-corundum spinel, njengama-ladle castables amakhulu, izitini ezivuzayo, izitini zokuhlala, amapuleti omthelela neminye imikhiqizo. Ingathuthukisa ngokuphawulekayo ukugeleza, ukungagxili, ukumelana nokuguguleka, nokusebenza okunqanda ukukhumuzeka kwezinto ezikhishwayo, ikakhulukazi kuthuthukise ukumelana kwazo nomthelela, kunwebe impilo yazo yesevisi, futhi kunciphise ukusetshenziswa kwezinto eziphikisayo ngethani ngalinye lensimbi.