Air Classifying Mill is designed to produce finer materials with sharper particle size distributions
than most other impact milling technologies. In certain applications, a median particle size as low as 5 microns can
Air Classifying Mill is the main component of the size reduction system, however, additional
ancillary components are required for a fully functional system.
• A feeder is required to accurately dispense product into the milling system.
• A product collector is required to separate the product from the gas stream and collect the material.
• Airlocks are used for feeding the system, containing system pressure and product discharging.
• A fan is required to generate the airflow to convey, mill and classify the product.
• Adequately sized ducting is required to connect the system components and contain and convey the product.
• Instrumentation and valves are required to sense and regulate the various operating parameters of the system.
The shroud and baffle assembly serves two purposes; one is to separate the internal parts of the mill into a grinding zone and a classification zone, the other is to act as a flow straightener and provide for the recirculation of the air/material mixture to the classifier and then back to the grinding zone.
The classifier is a device used to separate particles into fine and coarse fractions. The selection of the classifier wheel type is application dependent. Classifiers can be provided in short to long configurations with varying numbers of blades and blade type. Basic designs include radial or canted blade configurations.
When grinding abrasive materials, pharmaceutical products or food ingredients, Hosokawa offers options to protect your mill from premature wear and to maintain the purity of product. Internal surfaces and contact parts, including the liner, grinding elements, classifier and chamber can be constructed of mild steel, stainless steel, ceramic or coated with special alloys, like tungsten carbide.