Self-circulation micronizer is a highly efficient low consumption of the new type mill developed by our company after years of research. The micronizer adopts the IP layers in broken mode, can give full play to the role of the secondary micronizing. The equipment of the micronizing cavity is a small roll of the outer wall and big drum wall, be broken materials in the crushing cavity automatic cycle, have been broken many times. micronizer exhaust device design is clever, process is not affected by material water and mud. our company in the cycle of micronizer is conducted on the basis of the design, manufacturing the bedding layer crushing theory research, experimental study on the medium voltage and broken product granularity characteristics and power law research, examines the crushing pressure, mine clearance, small roller speed, processing capacity and other factors on the self-circulation micronizer production functions.