Nov 25, 2020 Milk Powder Blood Powder Spray Drying Machine labrotovap 2020-11-25T09:35:58+00:00. ... The solid is usually collected in a drum or cyclone. The liquid input stream is sprayed through a nozzle into a hot vapor stream and vaporized. Solids form as moisture quickly leaves the droplets. A nozzle is usually used to make the droplets as small as