The Fitz-cM classifier mill has been designed to provide size reduction with an integrated classifier to ensure that the desired product is achieved. The mill’s operating principle is mechanical-impact size reduction, which minimizes the operating energy costs. Internal airflow leads the material to the integrated air classifier to separate the desired product from the material that is still too large. The classifier’s operating principles balance centrifugal force and drag force to generate a high-precision method of classifying particles according to size and density. Oversized particles are then automatically returned to the milling chamber until they are reduced to the desired size. By adjusting the milling and classifier parameters, the system can be set up to achieve a wide range of size-reduction objectives, from 97% below 150 µm to 97% below 10 µm.

Units of up to 75 hp feature a double-walled main housing that reduces noise breakout and ensures that product contact parts are easily removable for cleaning. Bearing housings feature coaxial drive shafts, enabling the mill rotor and classifier wheel to be independently driven and the speed of each to be varied to optimize the system for each application. Cooling is available for the bearings, as is air purging, if required.

The state-of-the-art design includes Quick Clean contact parts for minimal downtime between product changes and reduced noise levels. Complete engineered systems include feeding, milling, product collection, and controls. The mill has a pressure shock–resistant design for milling hazardous products.

The standard Fitz-cM classifier mill features a robust design for demanding applications. Special-wear parts are made from abrasion-resistant materials that are easily accessed for inspection and replacement. Product changeover is simplified because product contact parts are easily accessible. Large-capacity units are available with the same easy-to-use features as the smaller machines.

Typical products for the standard mill include minerals, silica, alumina trihydrate, pigments, powder coatings, and chemicals.

The special-design Fitz-cM QC (quick clean) mill includes features that are advantageous for processors of food or pharmaceutical products such as lactose, caseins, powdered sugar, starches, cocoa, wheat gluten, other food additives and colorings, fiber and nutritional additives, pharmaceutical products, and excipients.

Fitzpatrick offers complete engineering for systems that are customized for specific applications. It also maintains a service team for equipment training and process optimization.

The Fitzpatrick Co., Elmhurst, IL 630-530-3333 www.fitzmill.com