... after weight measured, powder materials are sent laterally by the vibration hopper to the main feeder, deaerated by the stirring screw ... 4.After crushed and granulated, they’ll pass through the vibration sieve to be graded, and granules which meet requirement can be ... obtained. 5.Powder after the sieve will return to the vibration hopper to be granulated circularly. 6.Horizontal feed ...