Classifier Mills

Classifier Mills

Features
• Final product size 50 mesh to sub-micron size
• Two-stage closed circuit grinding
• Inter stage air classification
• Large access door for quick inspection/cleaning
• Standard door interlock

Benefits
• Perfect for difficult to grind application or with narrow particle distribution curve
• Screenless screen frame prevents screen damage and wear
• More uniform particle distribution
• Simple maintenance
• Secondary inlet provides additional air for an element of cooling

Classifier Mills - Information

The Prater Classifier Mill (CLM) offers the combination of two-stage closed circuit grinding with interstage air classification all in one unit. Difficult to grind and/or a narrower particle distribution curve than practical in the M series mills often require the unique capabilities of the CLM. The large access door on these mills allow for quick inspection and/or cleaning of the main rotor as well as the classifier rotor.

Three separate steps are taken when processing material through a Prater Classifier Mill. The initial grinding stage is similar to what is accomplished in the M Series Mills; however, a secondary inlet provides additional air for the second stage internal air classifier. This additional air also adds an element of cooling to the material being processed. Next, particles that are larger than specified are rejected by the classifier and are directed to the third stage, which is a separate part of the grinding rotor. Designed specifically for these more difficult to grind particles, this material is then redirected to the classifier, allowing only properly sized product to exit the mill.

As a safety precaution all Prater fine grinders come standard with an automatic door locking device to prevent accidental access to the inside of the mill while the rotor is operating.

Classifier Mills - Applications

Activated Carbon Alfalfa Leaves Boric Acid Boron Nitrate Bran Calcium Carbonate Cellulose Insulation Charcoal Chocolate and Malts Clay Coal Cocoa Coffee Coke Copper Sulfate Corn Meal Corn Starch Dextrose Egg Shells Flour Gelatin Graphite Gypsum Iron Oxide Lactose

Limestone Magnesium Hydroxide Oat Hulls Phenolic Resin Physllum Husks Powder Coating Preground Corn Radioactive Material Resinsv Rice Salt Sodium Caseinate Sodium Bicarbonate Soy White Flakes (CLM-76) White flake grinding system (including a Prater CLM-76) for a new facility in Almaty, Kazakhstan, can produce 48 metric tons/day of different grinds (incl. -100, -200 & -325mesh soy flour.) “We selected Prater-Sterling’s system because it offered us the very desirable combination of highly efficient equipment that …We attribute the value of this system in part to Prater’s extensive experience with both white soy flake & the various ways it can be processed” said a VITA spokesperson. Soya Concentrate Soya Protein Spice Starch Sugar Talc Toner Wheat Wood Flour Yellow Pigment Zinc Oxide