Fused spinel babban tsaftataccen magnesia-alumina spinel hatsi ne, wanda aka samo shi ta hanyar haɗa babban magnesia mai tsafta da alumina a cikin tanderun wuta. Bayan ƙarfafawa da sanyaya, ana murƙushe shi kuma an ƙididdige shi zuwa girman girman ed. Yana daya daga cikin mafi resistant refractory mahadi.Having a low thermal aiki zafin jiki, ne fice a high refractoriness thermal kwanciyar hankali da kuma sinadaran kwanciyar hankali, magnesia-alumina spinel ne sosai shawarar refractory albarkatun kasa. Its kyau kwarai halayen tics kamar kyau launi da bayyanar, high girma yawa, karfi juriya ga exfoliation da kuma barga juriya ga thermal girgiza, wanda e nable samfurin da za a yi amfani da ko'ina a cikin Rotary kilns, rufin lantarki tanda baƙin ƙarfe da karfe smelting, ciminti. Rotary kiln, gilashin makera da ni etallurgical masana'antu da dai sauransu.