It is an industrial machine which separates materials by a combination of size, shape, and density. The grinding mill works by injecting the material stream to be sorted into a chamber which contains a column of rising air. Inside the separation chamber of the grinding mill, air drag on the objects supplies an upward force which counteracts the force of gravity and lifts the material to be sorted up into the air. Due to the dependence of air drag on object size and shape, the objects in the moving air column are sorted vertically and can be separated in this manner.
Air classifier grinding mills are commonly employed in industrial processes where a large volume of mixed materials with differing physical characteristics need to be separated quickly and efficiently. One such example is in recycling centers, where various types of metal, paper, and plastics arrive mixed together and need to be sorted before further processing can take place.
Our air classifying grinding mills are ideal for difficult to grind applications or narrow particle distribution curve requirements, and offers simple maintenance, uniform particle distribution, screen-less screen frame that prevents screen damage and wear and, lastly, a secondary inlet to provide additional air for an element of cooling. At Classifier Milling Systems, safety is always first and all air classifying mills and fine grinders are equipped with an automatic door locking device to prevent accidental access to the inside while the rotor is operating. When using our grinding mill equipment, three distinct steps are taken to process the material:
- Initial Grinding Stage: Using the secondary inlet, additional air adds a cooling element to the material being processed.
- Particle Rejection Stage: Particles that are larger than specified are rejected by the classifier and directed into the third stage.
- Final Stage: These particles go into a separate part of the grinding rotor designed specifically for difficult-to-grind pieces. This material is then directed to the classifier, which allows only properly-sized product to exit the machine.