Various FCC catalysts and relevant materials were ground by using SKR 80 sand grinder.The changes of zeolite crystallinity and particle size during grinding were found.

• 应用SKR-80型砂磨机，对多种催化裂化催化剂物料进行了砂磨试验，找出了沸石结晶度、粒度等物料性质在砂磨过程中的变化规律。