... 4.high purity white fused alumina, alumina fused aluminaLeading manufacturer , supply high quality product, good service . white fused alumina size F10, F16, ... F24,F36,F46 F60,F80,F120,F180,F220, for refractory: sand ... Sandblasting content of magnetic substance0.0023%max... WFA alumina abrasive powder for polishing and blasting