Izitena eziPhezulu zeAlumina (iBanga lesi-III) (T-3)

Ukuba umxholo we-Al2O3 uphezulu kune-90%, kuthiwa yi-corundum brick. Ngenxa yezibonelelo ezahlukeneyo, imigangatho yamazwe ahlukeneyo ayihambelani ngokupheleleyo. Ngokomzekelo, amazwe aseYurophu achaza ukuba umda ophantsi we-Al2O3 umxholo we-high-alumina refractories yi-42%. E-China, izitena eziphezulu ze-alumina zivame ukubhekisela kwizitena eziphikisayo kunye nomxholo we-Al2O3 ongaphezu kwe-48%. Ubukhulu becala zenziwe nge-bauxite yomgangatho ophezulu wendalo, equlethe iiminerali ezifana ne-diaspore, i-bomerite, i-kaolinite, njl njl. Udongwe oluthambileyo okanye oluthambileyo ludityaniswe kwi-clinker ephezulu ye-alumina njenge-binder ukuqala ukuxutywa kunye nokuxuba, kwaye emva koko. iyabunjwa, yomiswe, ize ekugqibeleni igxothwe. I-refractoriness yezitena eziphakamileyo ze-alumina malunga ne-1770 ℃, kunye nobushushu bokuthambisa umthwalo yi-1420 ℃-1550 ℃. Izitena eziqhelekileyo ze-alumina eziphezulu ziyi-LZ-80, i-LZ-75, i-LZ-65, i-LZ-55, i-LZ-48, njl. iziko, iziko lomlilo ovuthayo kunye ne-rotary kiln. Ukongeza, izitena eziphakamileyo ze-alumina zikwasetyenziswa ngokubanzi njengezitena zokujonga ubushushu, iiplagi zokugalela iinkqubo, izitena ze-nozzle, njl.