Vibrating Grinding Mills

Vibratory mills are for continuous or batch grinding materials to a very fine end product. Two vibrating / grinding cylinders are placed either directly above the other or inclined at 30 degrees to perpendicular. Located between the two tubes an eccentrically supported weight is driven to produce a small circular vibration. The tubes are charged with ball or rod media to aid in the grinding action (attrition) from the constant impulses. Material is ground as it travels from the input end of the tube to the outlet end. Conventional tube mills for hard, coarse or if very fine grinding is required are connected in series so the material is ground through the top tube and subsequently through the bottom tube. If each tube is charged separately the grinding of the material is subsequently not so intensive. Useful for soft feed materials or if a low degree of fineness is required. Center feeding is also possible.

Vibratory / Vibrating mills have a very small size and low energy consumption (based on throughput) compared to other mill types. Grinding operations can be performed either wet or dry. Three tube vibratory mill configurations are also available.

- Sandvik Mining and Construction, KHD Humboldt Wedag images.