Due to indirect heating, the paddle dryer has very high thermal efficiency, typically reaching 80%-90%. The material is dried under low-speed agitation, resulting in low breakage rates, making it very suitable for fragile or crystalline materials. The entire drying process occurs in a closed environment, with no dust or exhaust gas leakage, making it environmentally friendly. It has a large heat transfer area and high processing capacity per unit volume. It can handle high-moisture materials like pastes and filter cakes, offering wide adaptability. Operation is stable, and the final product moisture is easy to control.
Specifications are expressed by the total heat transfer area of the paddles (square meters). Processing capacity (moisture evaporation) ranges from tens of kilograms per hour to several hundred kilograms per hour. The main shaft speed is low, typically between 5-30 rpm. When using steam as the heat source, the working pressure is usually 0.4-0.8 MPa. The equipment can be designed for continuous or batch operation.
In the feed industry, it is mainly used to dry high-moisture by-products, such as: brewer's grains, distiller's grains, bean dregs, fruit pomace, etc., drying them to make high-protein feed raw materials. It is also used in the processing of some slaughterhouse by-products (like feather meal, blood meal). It is a key piece of equipment for converting high-moisture waste into safe, stable, storable feed resources.
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