I wish to carry out my research on milk powder by drying it, but what are the possible methods of drying milk on a smaller scale? Because drying of milk on a larger scale involves more energy and milk.
Now a days no one goes for roller drying...n max milk is dried by Spray Drying technique only. U get Lab model spray dryers for drying small quantity of milk. so go for it.
For drying of milk and milk derivates we use a Niro spry drier in our lab. Depending on the dry solid contents of the feed material and spry drying process parameters we can get up to 12 kg of milk powder/hour. Of course there are smaller spry driers, however when choosing them one need to put an attention to the method of disc mechanism operation. According to our experience compressed air powered disc should be avoided due to instable working parameters, especially when changing the feed characteristics during the spry drying. The best one is the electrical motor powered disc.
For best results one shall use the vacuum evaporator (or reverse osmosis + evaporator) in front of the spry drier to increase the solid content of milk / milk derivates as low DS of the feed would give quite low bulk density and cause remarkable loses during drying process. Also the process time and costs would be significantly increased when drying milk directly, without its prior concentration.
Any application of RF/Microwave drying in milk/dairy products/processes?
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