Spray granulators are widely used in pharmaceutical industry for rapidly drying suspensions, solutions and viscous materials into free-flowing granules. These machines have a very high efficiency of drying and can evaporate considerable amount of fluids and liquids from particles, helping to save energy, process time. Compared with other granulation processes, spray granulation has major advantages to offer in terms of the quality of the final product.
Working of Spray Granulator
The process involves mixing of dry ingredients, adding liquid to the mixture and granulating them; this is followed by the drying of the granules. Spray granulators agglomerate fine particles into large and free flowing granules; granulation occurs by spraying liquid into fluidized powder.
Purpose of Spray Granulation Process
The purpose of spray granulation is to generate particles with a defined structure, shape, size and composition according to specification.
Uses
Spray granulator is used for:
- Dispersion activities
- Agglomeration
- Hot melt coating
- Spray drying
Application of Spray Granulator
- Phamaceutical industry: Tablet, capsule, low sugar or no sugar granule of medicines.
- Foodstuff: Coffee, cocoa, milk powder, juice of granulate, flavoring .
- Other industries: Feed chemical fertilizer, peticide, pigment, dyestuff and so on.
Product Characteristics
- Final products are usually spherical in shape
- Clean and dust-free
- High bulk density
- Good flow characteristic
- Narrow particle size distribution
- Very low attrition during storage, packing, conveying and transport.
