In the industrial filler industry, Calcium Carbonate (CaCO3) is the backbone of paper, plastics, and coatings. A recent client sought to upgrade their production capabilities to achieve a specific fineness for high-end paint fillers. Epic Powder provided a specialized Ball Mill & Air Classifying solution that exceeded their expectations for both precision and efficiency of calcium carbonate production.
The Challenge
The client needed to produce a consistent powder with a top-cut size (D97) ranging from 10 to 45 μm. The primary challenge was maintaining a high output while ensuring the particle size distribution remained narrow—avoiding “over-grinding” which wastes energy and produces unwanted ultra-fines.
Our Solution: The Epic Powder Integrated Grinding System
We implemented a closed-circuit Ball Mill and Air Classifier production line. This setup is widely regarded as the most reliable method for large-scale, high-precision mineral processing.
Key Advantages for Calcium Carbonate Producers:
By using high-alumina ceramic liners and grinding media, we prevent iron contamination, ensuring the final powder maintains its peak brightness. Our high-precision air classifier allows for a “sharp cut.” This means the D97 is strictly controlled, providing the exact texture required for premium industrial applications. The ball mill’s internal structure is optimized for efficient impact and attrition, significantly reducing the kWh per ton of finished powder.The entire system operates under negative pressure, meeting the highest environmental and occupational health standards.
Technical Performance Data
This system demonstrates exceptional stability across a range of fineness settings, providing a versatile solution for the client’s product portfolio:
| Material | Target Fineness (D97) | Capacity |
| Ground Calcium Carbonate (GCC) | 10 – 45 \μm | 800 kg/h |
Conclusion
Epic Powder’s ball mill and classifying technology provides the perfect balance between operational cost and product quality. For this client, the result was a more marketable product and a faster return on investment (ROI). Whether you are producing filler for PVC, paint, or paper, our engineering team can tailor a solution to your specific mineral profile.
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