Introduction
As an industrial filler and functional material, calcium carbonate (CaCO₃) has a wide range of applicaition in plastics, paper-making, coatings, etc. Its performance is highly dependent on particle fineness and distribution. Air classifier mill (ACM) is an important equipment for producing high-precision calcium carbonate due to its “integrated grinding and classification”design.
Working principle of air classifier mill
Air classifier mill achieves ultra-fine processing through synergistic effect of mechanical grinding and airflow classification:
Grinding stage
Material enters grinding chamber through the feeding system, and then high-speed rotating grinding disc (can reach 3000-8000 rpm) grinds the particles into finer sizes.
Grading stage
The built-in dynamic classifying wheel controls the centrifugal force by adjusting the rotation speed (100–3000 rpm) to achieve precise particle separation.
Qualified particles enter the collection system with air flow, and coarse particles return to the grinding area for re-treatment, forming a closed-loop system.
The effect of calcium carbonate after being treated by air classifier mill
In the production of heavy calcium carbonate (GCC): Air classifier mill can finely classify the coarse powder produced by mills, such as Raymond mill, and it can remove oversized particles and impurities, to produce filler-grade products with high whiteness and high dispersibility. This kind of GCC particles is suitable for application in industries of paper-making and cables.
In the field of light calcium carbonate (PCC): The powder obtained after carbonation reaction and drying has a relatively wide particle size distribution, while air classifier mill can effectively separate calcium particles of different sizes by utilizing the principle of aerodynamics. This can achieve nanoscale calcium carbonate with a concentrated particle size distribution can meet high-end application requirements such as rubber reinforcement and ink thickening.
In the production of activated calcium carbonate: Air classifier mill can link with surface modifier, to complete coupling agent coating simultaneously during the classification process. This can ensure modifying agent adheres uniformly to the surface of the particles, enhancing the functionality of the product.
Air classifier mill is a very important equipment in deep processing of calcium carbonate due to its precise classification, high efficiency, and energy saving. When selecting a model, it is necessary to comprehensively consider raw material properties, target particle size, and cost to optimize the economic benefits.
Qingdao Epic Powder Machinery Co., Ltd. est un fabricant specializing in the production of powder processing equipment, with many years of production experience and technical accumulation. Our products include: powder grinding equipment, classifying equipment, modification equipment and related auxiliary equipment.
Air classifier mill is one of our main products, which includes 4 series: MJW-W, MJW-L, MJW-A, MJL-W, and we can also provide laboratory air classifier mill. The air classifier mill produced by our company has a wider range of applications and higher efficiency than traditional air classifier mill through the optimization of internal design, and is widely praised by consumers.
If you need an air classifier mill to process calcium carbonate or other materials, or you need other powder processing equipment, please contact Epic Powder, and we will provide you with a one-stop solution from equipment selection, solution design to installation and commissioning, and after-sales service.
Contactez-nous – Let our professional equipment enhance your powder processing with higher efficiency and lower energy consumption, boosting your product competitiveness.
