... Introduction: 20%-80% Alumina Content Porous Ceramic Balls also called filtering balls. It is made by make 20~30% ... could be adsorbed in the pores inside the balls, thereupon protect the catalyst and prolong the operating ... and sizes.Bulk density ,kg/m31200-1500Porous ceramic balls are divided into 12 grades by reference to ... diameter, such as Φ3,Φ6,Φ8,Φ10,Φ13,Φ16,Φ20,Φ25,Φ30,Φ38,Φ50 and Φ75. The ...