Alumina loo isticmaalo sidii xamuul xamuul ah ayaa lagu soo koobi karaa noocyada soo socda iyadoo loo eegayo guryaha jireed iyo kiimikada iyo doorka uu ka ciyaaray alumina:
(1) Heerkulka alumina sidaha alumina noocan ah wuxuu leeyahay dhul yar oo gaar ah, iska caabbinta kiimikada, si ay u noqoto mid ka mid ah fal-celinta ee Alumina, sidaa darteedna waxay noqon kartaa isha suuragalka ah ee sunta ah ee loo yaqaan 'sumcadda' sunta ' Nidaamka wax soo saarka {{4}
(2) Gawaarida is-dhexgalka . noocan ah alumina waa kan ugu badan ee loo adeegsado {{2} ee ay ka falceliso qaybaha firfircoon ee ka kooban aagga sare ee wax ku oolka ah si loo wanaajiyo xasilloonida kuleylka ee waxtarka leh ee ka-hortagga kuleylka . iyo anti-sun. Guryaha {{5 {5}
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