Bean dregs, cassava residue and potato slag are by-products of tofu, starch and alcohol. The moisture content is about 80%, the internal water is high and the viscosity is high. With the traditional drying process equipment, the drying temperature is high, and the starch in the slag is high. The gelatinization chemical reaction occurs, the dextrin blocks the pores of the material particles, the water does not evaporate, the surface of the particles is yellowish black, and the "outer coke is soft", which seriously affects the dry slag selling phase; the drying temperature is low, and the moisture is not dried at all. Below 15%, the dryer sticks, gelatinizes, and agglomerates. The drying equipment cannot be produced normally, and the user's interests are damaged.

Dingli's special drying machine for bean dregs, cassava residue and potato residue is developed for the characteristics of bean dregs, cassava residue and potato residue. After several sets of dryer production practice, it can dry all kinds of beans and potato dregs to 12 at one time. %the following. The starch slag first enters the belt dewatering machine, the moisture is removed to 68±1%, and it enters the rotary dryer to dry. The water content of the discharge is reduced to 35±1%, and the pulverized particle size is less than 2mm, and then enters the pulse airflow dryer. Dry machine, moisture drying to 13 ± 1%, complete the starch residue drying process. The equipment adopts the Chinese patented technology of “Drying Dewatering + Tumble Drying + Pulse Airflow” of Dingli Company, which effectively solves the problem that the traditional dryer can not dry bean dregs, cassava residue and potato dregs. The dried materials have good color and quality. Well, the production line is energy-saving, environmentally friendly, safe and stable, and is well received by new and old customers.