用立式螺旋搅拌磨处理石墨和硅灰石以保护其晶体结构研究的基础上，采用同样的设备对云母的粉碎作了系统的试验，结果表明，立式螺旋搅拌磨可以作为云母粉碎设备，且操作性好、能耗低，为实际生产中云母的粉碎提供了方便．

Studies on the Crushing of Ultrafine Mica Li Leng;Tu Weamao;Zeng Xianbin(Assoc.Prof.,Dept.of Material Engineering,WUT,Wuhan 430070,China.)Mica is a kind of minerals which are most difficulty to crush.A systematic sutdy on the crushing of mica is given through the previous studies of ultrafine grophite and wollastonite,tower mill is used. As a result,tower mill is a kind of equip ment which mia can be crushed well,the crystal structure of mica is reserved. This process has advantages including lower power consumption and better operability.:mica;ultrafine;tower mill