How it works

Exceptional grinding performance and energy savings are the result of the Vibra-Drum's natural frequency design. A sub-resonant, two mass drive and spring system alternately stores and releases grinding power. Once in motion, energy is only needed to move the grinding media as a fluid mass, and to overcome frictional losses. The Vibra-Drum can be used for processes other than grinding. It has been used to process and agglomerate fiberglass, mix product components, clean castings, for hydrometallurgy, minerals recovery, and other processes.

The increased number of impacts in the Vibra-Drum grinding mill results in a faster, more efficient grinding action. As the mill vibrates, media particle migration is experienced in both axial and transverse directions. In fact, the media migrates through the Vibra-Drum in a path similar to that of a rotary mill without lifters, but each media particle imparts positve impact energy at each vibration.

The area where comminution takes place is larger and more efficient compared to a rotary mill of similar size. There are no dead zones of inactive media inside the vibrating mill. And, unlike stir or tower mills which grind by attrition, the Vibra-Drum grinding mill uses the principle of impact grinding which causes clean breaking and does not coat the mineral/gangue with slimes.