Nhanganyaya kuzvinhu zvikuru zve yakakwirira-alumina inovhiringidza zvidhinha

Chinhu chikuru cheiyi yakakwirira-alumina refractory zvidhinha ndeye AL2O3. Kana zvinyorwa zveAl2O3 zvakakwirira kudarika 90%, inonzi corundum brick. Nekuda kwezviwanikwa zvakasiyana, mipimo yenyika haina kunyatsoenderana. Semuenzaniso, nyika dzeEurope dzinoti muganho wakaderera weAl2O3 wezvinyorwa zvepamusoro-aluminium refractories ndeye 42%. MuChina, maererano nezvinyorwa zveAl2O3 mune zvidhinha zvakakwirira zvealumina, inowanzoparadzaniswa kuva makirasi matatu: Grade I──Al2O3 content>75%; Giredhi II──Al2O3 zvirimo ndeye 60～75%; Giredhi III──Al2O3 zvirimo ndeye 48～60%.