Air Classifier Mill Machine Explained
The PPS Air Classifier Mill Machine is a vertical grinding mill that incorporates an internal air classifying wheel with an independent drive. It is commonly used for milling heat-sensitive material and provides precise control over “particle cut point”.
To Mill and reduce the size of material, product is fed into the grinding chamber by either a feed screw or a pneumatic conveying system, through a rotary feed valve.
The material is processed through the high speed grinding media, which causes the product to break and be thrown by the centrifugal force, to the wall of the grinding chamber. Which in turn causes the product to break further.
The particles are entrained in the induced airflow surrounding the outside wall of the internal baffle assembly, which is fitted with air baffles to laminar the airflow. The laminar airflow and particles pass to the internal classifying wheel, which is rotating in the same direction as the rotor disc. Any oversized particles rejected by the classifying wheel, are moved into the inner wall of the baffle and pushed down by gravity, as well as the pressure created by the classifier. These oversized particles are then re-processed into the grinding media where further impact occurs.
This recycle action continues until all the particles pass through the classifier wheel.
PPS Air Classifier Mills are supplied for either batch process or for continuous processing. All PPS systems are designed to handle both inert and explosive applications. Venting or containment in such applications is required.
- Powdered Sugar 12X and 14X Grade
- Very Fine Flour
- Fine Grinding of Active Pharmaceutical Ingredients
- Dry Sorbent Powders
- Clay Powders
- Dye Powders
- Toner Powders
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