Fused spinel ndi njere yoyera ya magnesia-alumina spinel, yomwe imapangidwa ndi kusakaniza magnesia apamwamba kwambiri ndi alumina mu ng'anjo yamagetsi yamagetsi. Pambuyo pa kulimba ndi kuziziritsa, imaphwanyidwa ndikusinthidwa kuti ikwaniritse makulidwe a ed. Ndi imodzi mwazinthu zotsutsana kwambiri ndi refractory compounds.Kukhala ndi kutentha kochepa kwambiri kwa kutentha, kumakhala kochititsa chidwi kwambiri pa kutentha kwapamwamba komanso kukhazikika kwa mankhwala, magnesia-alumina spinel ndizovomerezeka kwambiri zopangira zopangira. Makhalidwe ake abwino kwambiri monga mtundu wabwino ndi maonekedwe, kachulukidwe wochuluka, kukana kwambiri kuphulika komanso kukana kugwedezeka kwa kutentha, zomwe zimapangitsa kuti mankhwalawa agwiritsidwe ntchito kwambiri muzitsulo zozungulira, denga la ng'anjo zamagetsi ndi chitsulo chosungunula, simenti. ng'anjo yozungulira, ng'anjo yamagalasi ndi ine etallurgical industries etc.