Understanding What Materials Can Be Crushed Efficiently

Writen by
Alan Yan
Last update:
November 5, 2025

Introduction to Air Classifiers Air Classification Process Working Principle of the ACM Air Classifier Mill…

Introduction to Air Classifiers

  • Air classifiers are commonly employed in industrial processes like food processing, cement, chemicals, cosmetics, pharmaceuticals, and pigments to separate particles by density, shape, and size.
  • They use air drag and centrifugal force to separate particles by mass and inertia, making them well suited for various industries.
  • The working principle of air classifiers allows for efficient and fast separation of particles with varying physical characteristics.
  • Air classifiers improve processing by classifying materials more efficiently and controlling air pollution.
  • They are most effective for dry materials with particles smaller than 100 mesh (149 microns) and often used with grinding machines.air classifier mill powder

Air Classification Process

  • The air classification process involves the use of air flow to separate coarse particles from fine particles, achieving precise particle size distribution.
  • Air classifiers control particle size separation using airflow, classifier aperture, feed rate-to-air ratio, and classifier wheel speed.
  • The process is carried out in a grinding chamber where material enters and is crushed into fine particles by high-speed rotor impact.
  • The air stream carries the crushed material into the upper classifying area of the mill, where finer particles are separated from larger particles.
  • The classifier wheel rotates at high speed, applying centrifugal force to separate fine particles and achieve particle size consistency.air classifier mill powder

Working Principle of the ACM

  • The ACM air classifier mill uses dynamic air classifiers to control particle size distribution down to D97 < 20 µm.
  • The mill recirculates coarse particles back into the grinding zone for efficient milling of various materials, including specialty chemicals and lithium carbonate.
  • The working principle of the ACM involves the use of a high-speed hammer/rotor assembly for milling and an air classifier inside the grinding chamber to control particle size.
  • The classifier wheel speed and airflow are adjusted to achieve the desired particle size distribution and minimize moisture buildup.
  • The ACM is well suited for processing heat-sensitive materials and achieving lower energy consumption.

Air Classifier Mill Technology

  • Air classifier mill technology combines mechanical impact crushing with air classification to produce fine powders with a narrow particle size distribution.
  • The technology is utilized in various industries, including food processing, pharmaceuticals, and minerals, to achieve precise particle size control.
  • Air classifier mills are designed to handle a wide range of materials, including those with high moh’s hardness, and are suitable for processing fly ash and other fine powders.
  • The technology involves the use of rejector blades to separate coarse particles from fine particles and achieve particle size consistency.
  • Air classifier mills are commonly employed in industrial processes to improve efficiency and reduce maintenance.air classifier mill

Particle Size Control

  • Particle size control is a critical aspect of air classification, and is achieved through the adjustment of classifier wheel speed, airflow, and feed rate.
  • The process involves the use of drag force to separate fine particles from larger particles and achieve the desired particle size distribution.
  • Particle size control is essential in various industries, including pharmaceuticals, food processing, and specialty chemicals, to ensure product quality and consistency.
  • Air classifiers are designed to achieve precise particle size control and are well suited for processing materials with varying physical characteristics.
  • The use of air classification technology enables the production of fine powders with a narrow particle size distribution, making it an essential process in many industries.air classifier mill

Air Classifying Mill Applications

  • Air classifying mills are widely used in various industries, including food processing, pharmaceuticals, minerals, and specialty chemicals, to produce fine powders with a narrow particle size distribution.
  • The mills are suitable for processing a wide range of materials, including those with high moh’s hardness, and are designed to handle heat-sensitive materials.
  • Air classifying mills are commonly employed in industrial processes to improve efficiency, reduce maintenance, and achieve precise particle size control.
  • The mills are well suited for processing materials with varying physical characteristics and are utilized in various applications, including the production of fine powders, pigments, and lithium carbonate.
  • Air classifying mills are an essential part of many industrial processes, and are designed to achieve precise particle size control and minimize moisture buildup.
  • Our customers often use the air classifier mill to crush dry materials, such as food, sugar, salt, neem leaves, dried flowers, etc.

About Alan Yan

I’m the founder of BRIGHTSAIL with 18 of manufacturing crusher, mill, mixer, dryers...etc. we are here to help. Have questions? Reach out to us, and we will provide you with a perfect solution.

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