Calcined Bauxite, Garnet Abrasive, Cenospheres manufacturer / supplier in China, offering Refractory Grade 87% Al2O3 Rotary Calcined Bauxite for Firebrick Castable, 0-1mm 3-5mm Rotary Calcined Bauxite Aggregate for Refractory Firebricks, High Alumina Content 87% Al2O3 Refractory Grade Rotary Calcined Bauxite and so on.