-100 meshes.Construction and Principle：The unit consist of three main grinder，whirlwind collecting mechanism，water cooling mechanism and a complete set of electric equipment。The main grinder consists of the frame，main motor，stepless variable speed motor，feeding mechanism，regulation mechanism and a pair of grinding dicss(a moving grinding disc and a static grinding disc)。The basic principle is as follows：The material is ground under the function of the shearing and grinding activated by