Al2o3 54.00% min ≤ 50.00% rejection Sio2 7.50% max ≤ 7.50% rejection Fe2o3 25.00% max Tio2 3.00% max Cao 1.50% max Mgo 1.00% max Na2o 0.50% max K2o 0.50% max Mno 0.20& max P2o5 0.70% max Loi (1000˚c) 12.00% max Moisture 4.00% max Size 2-20 cm In loose to bulk vessel