3?content of inert alumina ceramic ball, ceramic balls are divided into: ordinary ceramic ball, inert alumina ceramic ball, medium aluminum ceramic ball, high aluminum ceramic ball, 99 alumina ceramic ball, open-hole ceramic ball, micro-porous ceramic ball, regenerative ceramic ball, etc.Inert alumina ceramic ball size selectionThe size of the inert ceramic sphere should be chosen according to the size of the catalyst. Usually, 2X rules (or gradients) are used. That is to say, the diameter of t