Intshayelelo kumacandelo aphambili izitena eziphakamileyo-alumina eziyinjubaqa

Inxalenye ephambili yesi sitena se-alumina esiphezulu se-refractory yi-AL2O3. Ukuba umxholo we-Al2O3 uphezulu kune-90%, kuthiwa yi-corundum brick. Ngenxa yezibonelelo ezahlukeneyo, imigangatho yesizwe ayihambelani ngokupheleleyo. Ngokomzekelo, amazwe aseYurophu achaza ukuba umda ophantsi we-Al2O3 umxholo we-high-alumina refractories yi-42%. E-China, ngokomxholo we-Al2O3 kwizitena eziphezulu ze-alumina, ngokuqhelekileyo ihlukaniswe ngamabakala amathathu: iBanga I──Al2O3 umxholo>75%; Umxholo weBakala II──Al2O3 yi-60～75%; Umxholo weBakala III──Al2O3 ngu-48～60%.