... shapes Brown fused alumina is widely used as a raw material in refractories, ceramics shapes, grinding wheels, sandpaper, blasting media, metal ... aluminum oxide materials. Zhengzhou whale refractory Co.,LTD John duan Brown fused alumina use high-quality bauxite as main raw material, it ... .4≤1.8≤3 brown fused alumina/brown fused aluminum oxide/refractory material