... aluminais made mainly from bauxite, carbon materials and iron filings, smelting by high tempetures in electric spark furances. Brown fused aumina is ... #,80#,90#,100#,120#,150#,180#,220#,240#P grits for Coated Abrasives14# ,16#,20#,22#,24# , 30#,36# ,40#,46 ... #Refractory0—1mm,1—3mm,3—5mm,5—8mm,8—12mmFines for refractory180 Mesh,200 Mesh,325 Mesh91%—93% Al2O3, 94%—95 ...