17 June 2003
Low cost spray drying
The Saurin spray dryer is suitable for product development
The Saurin Group offers a range of spray dryers suited to production development, small batch
runs and full scale production.
Spray drying involves transforming a fluid into a dry-powdered form.
This is achieved by atomising the fluid into a drying chamber, where the liquid droplets are
passed through a hot-air stream.
The end objective is to produce a spray of high surface-to-mass ratio droplets, then to
uniformly and quickly evaporate the water. Evaporation keeps product temperature to a minimum
to prevent deterioration.
Spray drying is used for dairy-based products, soup powders, starch-based products, flavours,
nutritional products, and more.
The Saurin range of spray dryers for contract manufacture of food products includes equipment
capable of handling:
- 1kg/h and 3kg/h for product development
- 200kg/h for batch sizes of 200kg to a few tonnes
- 2300kg/h for larger production runs
The capital investment in a spray drying plant can be high but producing spray dried products
can be affordable.
The cost of contract spray drying can be as low as $0.65 per kilogram, depending on the product
and volumes.
Product development using smaller Saurin dryers is aimed at minimising risk and reducing
development costs.
Saurin offers several packaging option depending on the end user. It can supply packaging or
use customer supplied packaging. Production runs can be short or long.
Wet processing and wet blending equipment is available to meet specific requirements. Computerised
process control system ensures quality and consistency.
Customer specification which can be met include flavour intensity; dispersability; solubility; bulk
density; particle size; and nutritional composition.
Food & Pack
June 2003, Pg. 31
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