... ball mill 1,ISO 9000 certificate 3,Al2O3: 92% 4,Size:L:150*W:50*H:(40,50,60,70,100)mm High ... for ball millAL2O3:92%-99%. Can according to customers' requirements. Used for a variety of high-temperature kilns.fire high alumina brick,refractory high alumina ... service life, easy operation, could be shaped freely4. Can be used in various kilns because of its cheapness and general tray package ...