Calcium Citrate Drying

Calcium citrate drying is a critical industrial process used to convert wet calcium citrate solids—typically obtained from precipitation or crystallization—into a stable, free-flowing powder. Common Drying Methods: Flash Dryer, Fluidized Bed Drying

Calcium citrate drying is a critical industrial process used to convert wet calcium citrate solids—typically obtained from precipitation or crystallization—into a stable, free-flowing powder. As a highly bioavailable calcium source, calcium citrate is widely used in dietary supplements, pharmaceuticals, and fortified foods. The drying stage ensures product stability, shelf life, and usability.

Key Objectives of Drying:

Moisture Removal: Reduces water content to prevent caking, microbial growth, and chemical degradation.

Powder Handling: Produces granules or powder with optimal particle size, bulk density, and flowability for encapsulation or tableting.

Bioavailability Preservation: Maintains the compound’s solubility and absorption properties.

Common Drying Methods:

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.

Fluidized Bed Drying: 

Gentle drying with heated air fluidizing particles, ideal for temperature-sensitive batches.

Quality Considerations:

Temperature Control: Excessive heat can degrade citrate or create amorphous structures.

Residual Moisture: Typically targeted below 3–5% to ensure stability.

Powder Properties: Uniform particle size distribution (e.g., 20–150 µm) prevents segregation in final products.

Applications:
Dried calcium citrate powder is blended into tablets, capsules, beverages, and calcium-fortified foods. Its neutral taste and solubility make it preferable to carbonate forms.

Conclusion:
Optimizing drying conditions is essential to balance efficiency, cost, and product quality. Advances in drying technology continue to enhance yield and sustainability in calcium citrate manufacturing.