Calcium Carbonate Ultrafine Grinding Mill
Calcium carbonate ultrafine grinding mill by LIMING. Produces 150-3000 mesh GCC powder for paint, paper, plastic, rubber, adhesive and sealant industries. High efficiency, low energy.
About Calcium Carbonate
Calcium Carbonate is a material with a Mohs hardness of 3 Mohs, making it relatively easy to grind. The material's physical properties - including its crystal structure, cleavage patterns, and thermal behavior - directly influence the grinding approach and equipment selection. Understanding these properties is essential for achieving optimal grinding efficiency and product quality.
Material Properties
- Material: Calcium Carbonate
- Mohs Hardness: 3 Mohs
- Recommended Mill: HGM ultrafine grinding mill
- Output Fineness: 150-3000 mesh (5-74 microns)
- Production Capacity: 0.5-45 t/h
Grinding Solution Overview
The HGM ultrafine grinding mill is specifically configured for calcium carbonate processing, delivering consistent 150-3000 mesh (5-74 microns) powder at 0.5-45 t/h capacity. Calcium Carbonate has a hardness of 3 Mohs, which determines the optimal grinding pressure, roller material, and classifier speed settings. Our engineering team has extensive experience processing calcium carbonate across hundreds of installations worldwide, ensuring reliable performance and consistent product quality.
The grinding system operates in a closed-circuit configuration, where ground material is continuously classified and oversize particles are returned for regrinding. This design ensures precise control of the final product's particle size distribution (D50, D90, D97), which is critical for downstream applications. The integrated dust collection system captures all fine particles, ensuring clean working conditions and compliance with environmental emission standards.
Typical Applications
Calcium Carbonate powder produced by our grinding equipment serves diverse industrial applications:
- Paint and coating filler
- Paper filler and coating
- Plastic and rubber reinforcement
- Adhesive and sealant filler
- Food and pharmaceutical grade
- Construction materials
Complete Production Line Configuration
A typical calcium carbonate grinding production line includes the following equipment, each playing a critical role in the overall process:
- Primary crusher - Primary crusher (jaw crusher or hammer crusher) for initial size reduction of raw material to 10-30mm
- Bucket elevator for vertical material transport to the storage hopper - Bucket elevator for vertical material transport to the storage hopper
- Vibrating feeder for controlled, even material feed to the grinding mill - Vibrating feeder for controlled, even material feed to the grinding mill
- Grinding mill (the HGM ultrafine grinding mill) for fine powder production at target fineness
- Air classifier for precise particle size separation and control - Air classifier for precise particle size separation and control
- Cyclone powder collector for primary powder collection from the airflow
- Pulse-jet bag filter for final dust capture and clean air emission - Pulse-jet bag filter for final dust capture and clean air emission
- Packaging system for finished powder bagging or bulk loading
Quality Considerations
When processing calcium carbonate, key quality parameters include particle size distribution (D50, D97), whiteness/purity retention, bulk density, and free-flowing properties. The HGM ultrafine grinding mill's integrated classification system ensures tight particle size distribution, while the sealed grinding chamber prevents contamination from external sources. For applications requiring surface modification (such as stearic acid coating for plastic fillers), a powder surface coating machine can be integrated downstream of the grinding mill.
Material moisture content is another critical factor. Calcium Carbonate with moisture content above 3-5% may require pre-drying or a hot air system integrated with the grinding mill to prevent clogging and ensure proper classification. Our engineers can assess your material's moisture content and recommend appropriate drying or dehumidification solutions if needed.
Energy Efficiency & Environmental Compliance
Our grinding systems are designed with energy efficiency as a priority. The optimized grinding chamber geometry, high-efficiency classifier, and variable-frequency drive systems work together to minimize power consumption per ton of finished powder. Compared to conventional ball mill systems, our equipment typically achieves 30-50% energy savings for equivalent production capacity.
Environmental compliance is ensured through integrated dust collection systems that maintain emission levels below 20 mg/m3, well within international standards. The sealed grinding chamber and negative-pressure operation prevent dust escape into the working environment, protecting operator health and maintaining clean facility conditions.