Case Study: Calcium Carbonate Air Classifier Mill Grinding and Classification Project in Greece
Project Name: Epic Powder MJW Series Air Classifier Mill Helps Greek GCC Enter the High-End D50: 5-7μm Ultrafine Powder Market
Project Background
Greece is renowned for its high-quality calcium carbonate (CaCO₃) mineral resources. These are known for their high whiteness, high purity, and stable physical and chemical properties. A leading Greek mineral processing company aimed to further process local high-quality raw ore into ultrafine powder. The goal was to supply the European high-end paper, plastic modification, and architectural coatings industries.
The customer set extremely high requirements for product particle size distribution, whiteness retention, and production stability. They aimed to enhance product added value through advanced powder processing technology. This would enable them to enter the premium application market.
Customer Requirements
- Product fineness: D50 controlled at 5-7μm (target around 6μm), with narrow particle size distribution
- Production capacity: Stable output of 1-2 t/h
- Other requirements: High energy efficiency, long-term stable operation, no metal contamination, and maximum retention of the raw material’s natural high whiteness
Solution
Considering the relatively low Mohs hardness of Greek calcium carbonate combined with strict requirements for whiteness and particle size distribution, Epic Powder (Qingdao Epic Powder Machinery Co., Ltd.) recommended and supplied a complete MJW Series Air Classifier Mill (ACM) system tailored to the customer.
This equipment integrates impact grinding with high-efficiency classification, achieving “grinding while classifying.” This design effectively prevents over-grinding and makes it an ideal choice for producing ultrafine calcium carbonate. The solution emphasizes Calcium Carbonate Air Classifier Mill Grinding for precise and stable particle size control.
Key Equipment Features
- Integrated Design: Built-in high-precision turbine classifier enables real-time classification during the grinding process, with coarse particles automatically returning to the grinding chamber, resulting in high grinding efficiency and low energy consumption.
- Precise Particle Size Control: By optimizing the classifier wheel speed and airflow matching, the system stably achieves D50 = 5-7μm with narrow distribution.
- Purity and Whiteness Protection: Special wear-resistant treatment on internal contact parts effectively prevents metal contamination and fully preserves the natural high whiteness of Greek calcium carbonate raw material.
- High Efficiency and Stability: Compact structure, reliable operation, suitable for continuous large-scale production, easy maintenance, and significant energy-saving advantages.
Project Implementation and Operating Results
After installation and commissioning, the equipment quickly entered stable production. On-site actual operation data shows:
- Processed material: High-quality Greek ground calcium carbonate (GCC)
- Core equipment: Epic Powder MJW Series Air Classifier Mill
- Product fineness: D50 = 6μm (fully meeting the 5-7μm requirement), narrow particle size distribution
- Hourly capacity: 2.2–2.8 t/h (stably exceeding the customer’s 1-2 t/h expectation)
- End applications: High-end coatings and eco-friendly plastic fillers
The system runs smoothly, with precise particle size control and excellent whiteness performance. All indicators have met or exceeded customer expectations, marking the Greek company’s successful entry into the European high-end ultrafine calcium carbonate market.
The project highlights the efficiency and reliability of Calcium Carbonate Air Classifier Mill Grinding in producing high-quality ultrafine powder for premium industrial applications.