... 4.Grit Size:8-5,3-1,1-0 Refractory Grade 99.5% White Fused Alumina 1. White Fused Alumina Description1)White ... Fused Alumina is made by first grade alumina as raw material, smelting in electric arc furnace at ... Alumina is the ideal material in the production of high-grade refractory, abrasives, polishing materials, coating, chemical catalyst carrier, special ceramics ...