Ukuhlelwa kunye neempawu ngokubanzi ze izitena alumina eliphezulu

I-refractory ye-alumina ephezulu inokuthi ihlelwe ngokwezinga eliphezulu, elinokuthi lihlulwe ngokufanelekileyo kwiindidi ezine: kukho izitena eziphezulu ze-alumina ezikumgangatho wokuqala, izitena eziphezulu ze-alumina zenqanaba lesithathu, izitena eziphezulu ze-aluminium kunye nezikhethekileyo. -izitena eziphezulu ze-alumina. Ngokwemigaqo yomgangatho woshishino, izibonakaliso zeekhemikhali Abo banomxholo we-aluminium ≥55% baba yinqanaba lesithathu lezitena eziphezulu ze-alumina, abo banomxholo we-chemical index aluminium ≥65% baba yinqanaba lesibini lezitena eziphezulu ze-aluminium, kunye nalabo abane-aluminium index index. umxholo ≥75% ibe yinqanaba lokuqala lezitena ze-aluminium eziphezulu. Isalathiso samachiza sine-aluminiyam. Isixa ≥80% iba isitena se-alumina ephezulu kakhulu.