Drying

The art of effectively evaporating water.

  • Fast, efficient drying
  • Homogenous drying
  • Reproducible residual moisture
  • Gentle product treatment
    (no thermal damage)

Process principle

Heat is fed to the product when drying in order to evaporate water or an organic solvent. As evaporation cools the product, high temperatures can be used for drying without overheating the product. Intensive mixing in the fluid bed ensures homogenous residual moisture in the product.

Spraygranulation

Building up particles from liquid.

  • Dust-free, low abrasion
  • Ideal flow behaviour and dosability
  • Compact structure
  • Low hygroscopicity
  • High bulk density
  • Dense surface
  • Narrow particle size distribution

Process principle

Spray granulation in the fluid bed is the drying of liquids (solutions, suspensions, melts) while simultaneously building up granules. 

Starter cores can be provided for granulation (extrinsical material) or be formed in the fluid bed due to abrasion and fracture (inherent material). The liquid sprayed is coating the cores layer by layer and is dried. Spray granulates are denser and harder in comparison with agglomerates.