Attritor Mill Principle of Working: The attritor is a grinding mill containing internally agitated media. The rotating shaft located centrally equipped with several horizontal arms creates sufficient stirring action so as to force the grinding media randomly through out the whole tank volume, causing irregular movement instead of group movement.
The irregular movement causes impact action of the media. The arm causes irregular movement by exerting the following combination of actions.
1. Impact action on the media which later collide with other media;
2. Rotational force on the media;
3. Tumbling force as media fall into the void left by the arm.
Due to the configuration arrangement of the arms, the material is constantly moving around the tank and in and out of this most active zone. For efficient fine grinding both impact action and shearing force must be present. Impact action is developed by constant impinging of the grinding media due to its irregular movements and shearing action is created by the spinning movement of the grinding media.
