MillNest Air Classifying Mill (MACM)
Precision Size Reduction with Integrated Classification
Overview
The MillNest Air Classifying Mill (MACM) is a pulverizer with an integrated classifier that utilizes a unique system of internal circulation to achieve precise size reduction. By combining impact milling with air classification, the MACM produces fine powders more efficiently while maintaining a critical particle size distribution, ensuring superior product quality.
Customizable to handle specific requirements such as grinding to >250 microns, the MACM minimizes temperature rise during the pulverizing process to suit the solids being ground. Engineered for precision and consistency, it is the ideal solution for industries like food, pharmaceuticals, chemicals, and minerals, where uniformity and control are critical.
Working Principle
The MillNest MACM operates by combining impact grinding and air classification in the following steps:
Material Infeed
Raw material is introduced into the grinding chamber through a top-mounted feed inlet. Materials can include powders, granules, or other dry solids requiring size reduction.
Impact Milling
High-speed rotating hammers or blades strike the material, breaking it into smaller particles through impact and shearing forces.
Air Classification
A controlled air stream carries the finer particles into a classifier zone, where centrifugal force separates them from coarser particles.
Discharge
Fine particles exit through a cyclone separator or filter bag, while oversized particles are recirculated to the grinding chamber for further reduction.
Output
This integrated approach delivers precise, repeatable results, enabling tight control over particle size distribution.
Design Features

Achieves precise size distribution through integrated air classification.

Combines grinding and classification in a single unit for space and cost efficiency.

Separates fine particles efficiently, reducing the generation of oversized particles.

Optimizes energy usage while maintaining high throughput.

Space-saving construction suitable for seamless integration into production lines.

Designed with robust materials and minimal moving parts for long-term reliability.
VIEW in 3D
Technical Parameters
Model | Capacity | Main Motor | Classifier motor | Dimensions | Feed Type |
---|---|---|---|---|---|
Unit | (kg/hr) | (kW) | (kW) | (l x b x h) | Gravity Feed Pneumatic feed Screw Feed |
MACM-500-50 | 100 – 500 | 5.5 – 37 | 0.55 – 7.5 | 2*0.64*1.1 | |
MACM-1000-100 | 500 – 1000 | 45 – 75 | 9.3 – 15 | 2.5*1*1.5 | |
MACM-2000-215 | 1000 – 2000 | 90 – 160 | 18.5 – 37 | 2.85*1.2*1.73 | |
MACM-4000-425 | 2000 – 4000 | 180 – 315 | 45 – 75 | 3.7*1.5*1.3 |
Why Choose MillNest Air Classifying Mills?

Precision Control
Achieve exact particle size specifications with minimal variation.

High Throughput
Process large volumes efficiently, meeting industrial-scale demands.

Minimized Waste
Reduce reprocessing with efficient classification, improving productivity.

Cost-Effective Operation
Energy-efficient design reduces operational costs while maintaining performance.

Versatility
Compatible with a wide range of materials and industries.

Scalable Design
Available in various capacities to suit small-scale to large-scale production needs.
Applications

Food Processing
- Spice Grinding: Ensures uniform particle sizes for chili powder, turmeric, pepper, and other spices.
- Flour Milling: Produces fine, consistent flour for baked goods and other food products.
- Sugar Processing: Converts sugar into ultra-fine powders for confectionery and beverage applications.

Pharmaceuticals
- API Grinding: Fine milling of active pharmaceutical ingredients for precise formulations.
- Excipients: Produces uniform powders to improve drug stability and absorption.

Chemicals and Polymers
- Pigments and Coatings: Size reduction of pigments and fillers for coatings and paints.
- Polymer Powders: Grinding plastic materials for applications like 3D printing or compounding.

Minerals and Mining
- Ore Processing: Produces fine powders for further separation or refining.
- Cement Additives: Prepares materials for use in cement production.

Agriculture and Fertilizers
- Fertilizer Grinding: Creates fine, uniform particles for easier application.
- Feed Milling: Prepares animal feed with precise nutritional profiles.

Environmental and Waste Management
- Recycling: Reduces plastic or rubber waste into reusable fine powders.
Precision Engineered for Your Success
Learn how the MillNest Air Classifying Mill delivers unmatched efficiency and control in size reduction.