The feeding device above the hammer mill provides a dosed supply of raw materials to the grinding chamber of the hammer mill. At the same time, possible solid foreign objects are separated from these raw materials. By removing metal, stones and other heavy parts from the raw materials, the chances of explosions (caused by sparks) in the hammer mills grinding chamber is minimized.
The lifetime of the screens is extended extensively since the chances of screen damages are reduced by removing these foreign part from the raw materials. Two types of feeding devices can be applied to the GD hammer mills:
• Type HM GD: standard feeding device with automatic ferro
parts separation
• Type HM GD HPS: feeding device with automatic ferro parts separation and heavy parts separator
Depending on the system confi guration of the hammer mill (HM), both types of feeding devices can be applied to the HM 700 GD and the HM 1400 GD. The feeding devices can be used in combination with the optional automatic screen exchange.