calcined alumina powder polishing High purity of 99.7% min. precision ... powder polishing 1. IntroductionAlumina powder is made by high-quality bauxite as main material, fusing and ... 2) Refractory material: Mainly used for abrasion and high temperature resistant, inoxidizable aggregate and filling of shaped ... 80.050.040.023.9596Powdery, grindability, high purity, suit high class porcelain production1~2