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Milling Technology

The Quadro® Comil®

The Quadro Comil - the original conical screen mill has been the industry standard for almost half a century.

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The Quadro® Comil®conical screen mill, developed for a wide range of powder processing applications.

The Comil® Comil® Heritage Milling Best Practice Comil® Tooling Request A Callback

The Original Cone Mill

In 1976, Quadro developed and engineered the original cone or conical mill. It has since evolved into the preferred milling technology, respected and utilized by global leaders in over 80 countries, across a range of industries.

Effective, Reliable Conical Milling

Now recognized for use in applications throughout the Pharmaceutical, Food, Cannabis, Chemical, Personal Care, and Cosmetics industries worldwide, the Quadro® Comil® is coveted by process managers looking to achieve optimum process efficiency and product consistency.

Since the introduction of the first Comil® - Model 196, Quadro Engineering has delivered industry-leading milling solutions. Our team of experts has since developed and released a further eight Comil® models with this same core technology at the center of our current equipment, all industry-leading products:

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The Quadro® Comil® Heritage

Revolutionary milling technology has stood the test of time.

The Comil® (Cone Mill) has advanced since its initial design over 30 years ago, but remains widely recognized as a leading milling technology, typically used for the following applications:

  • Sizing wet granulated particles before drying.
  • Sizing dry granules before the tableting stage.
  • Delumping dry detergent during production.
  • Deagglomerating dried fruits.
  • Reclaiming - broken tablets, broken biscuits that are ground back into their powder form prior to being restructured.

Learn more about our milling and particle sizing equipment.

Comil Model 196

Milling Advice and Best Practice

Those who have worked with Quadro recognize that we don't just sell milling equipment.

When you invest in our technology, you also benefit from decades of experience to ensure you get the most from your equipment purchase. This guidance ensures that you not only improve upon machine reliability but also achieve effective particle size distribution, increasing yields, and product quality.

Visit our learning resources page to understand why milling is a key process stage in many applications with useful guides, articles, and advice from the Quadro team.

Milling Advice & Best Practice

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Benefit from utilizing the best milling equipment

Use our decades of experience to select the most appropriate milling equipment for your application requirements.

The Quadro Engineering team works to ensure that customers profit from unmatched technical expertise thereby guaranteeing that the equipment selected proves to be the ideal bulk powder processing solution for their individual application requirements - whether that be particle size reduction, sieving, deagglomeration or reclaim.

To learn more about your specific applications please visit the Industry Applications page, or contact our experts directly via the contact us form.

Conical Mill Screens

Thanks to our decades of experience, Quadro have the largest range of screens available to ensure our customers can achieve their chosen Particle Size Distribution (PSDs). With a wide range of screens and impellers to choose from, it is critical that you select the correct set-up for your product and the required PSDs.

Round-Holed Screen

“R” Round-Holed Screens: Typically used for particle size reduction of dry materials, deagglomeration, homogenizing and bulk density controllability.

  • Screen sizes range from 0.006” (0.15 mm) to 0.250” (6 mm) hole diameters.

Round-holed screens also available with patented High-Efficiency hole patterns

Square-Holed Screen

“Q” Square-Holed Screens:  Primarily used for “wet mass milling” and general product sizing.

  • Screen sizes range from 0.156” (4 mm) to 1.00” (25 mm) hole dimensions.
  • Slotted screens are also available for products with poor flowability through "Q" screens.

Grater-Holed Screen

“G” Grater-Holed Screens: Grater (or Rasp) Screens are used for tighter particle size distributions of dry materials and to reduce the number of fines generated.

  • Screen sizes range from 0.032” (0.8 mm) to 1.00” (25 mm) hole diameters.

Grater-holed screens also available with patented High-Efficiency hole patterns

Conidur Holed Screen

“C” Conidur® Holed Screens: Typically used for dry, friable materials when smaller, tighter particle size distributions are required.

  • Sizes range from 0.009” (0.2 mm) to 0.024” (0.8 mm) hole diameters.

Comil® Screen Selection

Selecting the right screen is critical to success.

Legend 1. Highest 2. Medium-High 3. Medium-Low 4. Lowest NR - Not Recommended NA - Not Applicable

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Mill Impellers

Selecting the right impeller is critical to success. Quadro provides the widest impeller RPM range of any comparable conical mill. This ensures that you can achieve the desired PSDs and milling capacities.

Round Bar Impeller

1601 Round Bar Impeller: The standard for dry particles or granules’ milling, raw material conditioning, gentle deagglomeration, and bulk density improvement.

Square Bar Impeller

1607 Square Bar Impeller: The standard for “wet mass milling” and commonly used for general dry product milling and delumping. Provides slightly finer particle size distributions than round bar impellers.

Forward Angled Impellers

1612 Forward Angled Impeller: Commonly used for high throughput of coarser particle size distributions. Typically paired with larger-hole screens after a fluid bed drier for granule “calibration”.

Backward Angled Impellers

1609 Backward Angled Impeller: Commonly used for finer particle size distributions. Typically used with non-heat sensitive products for finer or smaller particle size distributions.

Comil® Impeller Selection

Selecting the right screen is critical to success.

Legend 1. Highest 2. Medium-High 3. Medium-Low 4. Lowest NR - Not Recommended NA - Not Applicable

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Find the Right Screen for You

We've been helping customers select the ideal milling equipment for their application for over 40 years. Contact our team of experts for guidance.

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Quadro Engineering, a division of IDEX MPT, Inc has earned the respect & trust of customers worldwide through our commitment to improving the performance of their powder processing operations. We set the standards by which others are measured.

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