Alpha alumina

α-Al2O3  crude powder and micro powder is prepared using alumina and aluminum hydroxide as starting materials by tunnel kiln high temperature calcining technical process, grinding and grading. It is characterized by high purity, highα-Al2O3 transition rate, high true specific gravity, steady crystal phase, narrow grain size composition and good dispersiveness. It is widely used for ceramics, electric ceramics, refractories, spark plug, catalyzer carrier, filler for glass insulator, advanced insulating parte, high purity refractory fiber, filler for epoxy resin casting, abrasives for grinding and polishing.