Ubwino ndi kuipa kwa chitsulo chosakanikirana chayade ndi corundum yofiirira:

The corundum-based refractory yaiwisi yopangidwa ndi njira yosakanikirana ya corundum imakhala ndi alumina wambiri. Mbewu za corundum ndizokwanira komanso zowawa. Kukhazikika kwamankhwala apamwamba, aluminiyamu wapamwamba kwambiri kapena clinker yapamwamba kwambiri imagwiritsidwa ntchito ngati zopangira kuti zisungunuke mu arc Shanghai, kuchotsa zotsalira, ndikuziziritsa frit. Pali mitundu iwiri ikuluikulu ya corundum yosakanikirana ndi yoyera yoyera. Pamene mkulu aluminiyamu bauxite ntchito kubala bulauni corundum, mkulu aluminiyamu bauxite ayenera chisanadze moto pamaso electrofusion kuchotsa adsorbed madzi ndi structural madzi mmenemo kufulumizitsa ndondomeko electrofusion ndi kuchepetsa mowa mphamvu. Kuti muchepetse kwathunthu kuphatikizika ndikuchotsa bwino zonyansa, ndikofunikira kuwonjezera kuchuluka koyenera kwa anthracite ndi ufa wachitsulo kuzinthu zopangira. Pamene aluminiyamu imapanga corundum yoyera, chifukwa cha chiyero chapamwamba cha zipangizo zopangira, palibe chifukwa chogwiritsira ntchito njira zochepetsera kulekanitsa zonyansa. Zomwe aluminiyamu wa aluminiyamu wosakanikirana ndi aluminiyamu wosakanikirana ndi wamkulu kuposa 90%, ndipo aluminiyamu ya alumina yosakanikirana yoyera ndi yoposa 98%. Magwiridwe a corundum osakanikirana ndi ofanana ndi a sintered alumina, koma corundum ina yosakanikirana imakhala ndi mawonekedwe apamwamba kwambiri.