Air Classifier Mills – DP Pulverizer Americas Inc

What is an Air Classifier?

An air classifier is a device used to separate dry powders into fine and coarse fractions based on particle size and density, using a stream of high-velocity air. Unlike mechanical sieving, air classification offers a contactless and highly efficient method of grading materials without screens or meshes.

At DP Pulverizer, our air classifiers are engineered to deliver precise, energy-efficient separation for high-performance milling systems and stand-alone classification needs.

How Does an Air Classifier Work?

Air classifiers utilize centrifugal and gravitational forces within a controlled airflow to sort particles. The process involves:

Material Inlet – Powdered material is introduced into the classifier housing.
Air Flow Generation – A high-speed fan or blower creates a circulating airflow inside the chamber.
Centrifugal Classification – As particles enter the rotating classifier wheel or chamber, fine particles are carried upward with the airflow, while heavier or coarser particles are thrown outward and downward by centrifugal force.
Fine & Coarse Separation – Fine particles exit through the top as classified product. Coarse particles are returned to the mill or collected for reprocessing.

Main Components of an Air Classifier

✅ Classifier Rotor/Wheel
Rotating element that controls cut size and separation efficiency.
✅ Housing & Chamber
Encloses the airflow system and classification zone.
✅ Air Inlet & Fan Assembly
Produces the airflow for particle separation.
✅ Fine Product Outlet
Collects the finely classified material.
✅ Coarse Return Port
Sends oversized particles back for further grinding.
✅ Control System
Adjusts rotor speed and airflow to fine-tune performance.

Advantages of DP Pulverizer Air Classifiers

✅ No Screens or Sieves – Eliminates clogging, blinding, and wear associated with mechanical sieving.
✅ Precise Cut-Point Control – Adjustable rotor speeds enable fine-tuning of particle size distribution.
✅ Energy Efficient – Low power consumption for high throughput performance.
✅ Closed-Loop Operation Available – Integrates with inert gases like nitrogen or argon for sensitive materials.
✅ Versatile & Scalable – Suitable for standalone classification or integration with jet mills and impact mills.
✅ Low Maintenance – Minimal wear parts and easy-access design.

Disadvantages of Air Classifiers

⚠️ Higher Initial Capital Cost – Compared to basic sieving or screening equipment.
⚠️ Requires Clean, Dry Feed – Not suitable for sticky, wet, or highly agglomerated powders.
⚠️ Performance Dependent on Air Quality & Feed Rate – Requires precise process control for optimal efficiency.

DP Mills USA Facility — 63
Years of experience

DP Pulverizer Americas Inc

Why Choose DP Pulverizer Air Classifiers?

At DP Pulverizer, we engineer air classifiers to deliver unmatched separation precision, ultra-fine cuts, and maximum productivity.

Our designs support integration into complete grinding systems or stand-alone use for particle refinement.

With options for stainless steel construction, explosion-proof configurations, and inert atmosphere compatibility, our air classifiers are tailored to your material and industry.

Trusted by industry leaders worldwide.

Engineering solutions that fuel client success.

Air Classifiers by DP Pulverizer – Precision Particle Separation at Its Finest

Industries & Applications

Nutraceuticals

Chemical Processing

Minerals & Ceramics

Battery & Electronics