Dried yeast is widely used in aquaculture as a pellet feed additive. The dried yeast culture can be directly fed to livestock; the feed yeast has various nutrients, which can promote the growth of livestock and enhance the resistance of livestock. It can improve the intestinal microecological environment of animals. Using a yeast dryer to dry and recover yeast can yield very good economic, environmental and social benefits.

Yeast dryer is a dryer that heats materials and vaporizes water by indirect conduction heating, and uses steam to heat. The drying cylinder (drum) is a metal hollow cylinder with a processed outer surface and a very high surface finish. Driven by a transmission device (large and small gear transmission), the drying cylinder rotates around the axial direction and the speed can be adjusted. The slurry is preheated in the preheating tank, preheated to about 50°C, and fed into the dipping tank at the lower part of the drying cylinder with a feeding pump, the drying cylinder is immersed for about 60-80mm, and the outer surface of the rotating drying cylinder is dipped and coated. - A uniform layer of slurry (that is, the thickness of the film), the steam pressure in the dryer is 0.15-0.3Mpa, the slurry is heated on the outer wall of the dryer, and the water is vaporized and discharged by the axial flow fan. When the drying cylinder rotates for one week, the material is dried, and the flake material is discharged by the scraper on the outer wall of the drying cylinder, and then falls to the discharge port for collection.