Calcium carbonate drying

Calcium carbonate (CaCO₃), a widely used inorganic compound, exists naturally in forms such as limestone, chalk, and marble, and is synthetically produced as precipitated calcium carbonate (PCC) or ground calcium carbonate (GCC). Drying Methods:Vibration Fluid Bed Dryer, Flash Dryer.

Calcium carbonate (CaCO₃), a widely used inorganic compound, exists naturally in forms such as limestone, chalk, and marble, and is synthetically produced as precipitated calcium carbonate (PCC) or ground calcium carbonate (GCC). Drying calcium carbonate is a critical step in industrial processes to remove moisture, control particle size, and enhance material performance in downstream applications.

Drying Methods

Vibration Fluid Bed Dryer
The vibration source is driven by a vibration motor, which has balanced operation, easy maintenance, low noise and long service life.
High effection, raw material is heates evenly and heated evenly and heat exchange is fully used and dry capacity is high. Compared with ordinary drier, the energy can be saved about 30%.

Flash Dryer :
High-Efficiency Drying Mechanism: XSG Series Spin Flash Dryer employs a tangential air inlet and a high-speed stirrer to create a powerful rotating wind field. This ensures efficient heat transfer and uniform drying of paste, cake, and slurry materials.
Advanced Material Processing: The equipment processes raw materials through a combination of cutting, shearing, blowing, floating, and rotating actions, transforming them into granulated form. This enhances material separation and strengthens the heating exchange process.

Critical Parameters
Moisture Content: Target residual moisture <1% for most industrial applications.
Temperature Control: Avoid localized overheating to prevent particle agglomeration.
Particle Size Distribution: Critical for applications like paper coating or polymer fillers.

Applications of Dried Calcium Carbonate
Construction: Cement, concrete, and asphalt filler.

Plastics and Rubber: Reinforcing filler to improve mechanical properties.

Paper Industry: Coating agent to enhance brightness and opacity.

Pharmaceuticals and Food: Antacid tablets, dietary supplements, or food preservatives (ultra-pure PCC).

Coatings and Paints: Extender pigment to improve durability and gloss.

Safety and Handling
Hazards:
Low toxicity, but inhalation of fine dust may cause respiratory irritation.
Dust explosion risk in enclosed, high-concentration environments.

Precautions:
Use dust collection systems, PPE (masks, goggles), and grounding to mitigate static charges.
Avoid contact with acids to prevent CO₂ gas release.

Post-Drying Storage
Packaging: Store in moisture-proof bags or silos to prevent reabsorption of water.

Shelf Life: Indefinite if kept dry and uncontaminated.