氧化好,白度好,低鐵,陶瓷料
①鋁35%,白度45
②鋁39%,白度50
③鋁18%,白度60
鋁50%±5%,矽13%±3%,鐵20%±3%
煆燒鋁礬土,高鋁砂。①鋁42%,白度65。②鋁42%,白度45 。③鋁38%,白度30