As soon as the aqueous powder material enters our high-efficiency rotary flash dryer, a choreographed dance of heat and moisture unfolds. The hot air stream first transfers heat to the material particles, causing the moisture on its surface to evaporate rapidly and diffuse to the outside world. This initial ramp-up drying stage sets the tone for the entire drying process.
As the moisture on the surface of the particles evaporates, a moisture difference forms between the inside and outside of the particles, triggering a continuous diffusion of moisture from the inside to the surface. When this process reaches a dynamic equilibrium with external evaporation, we enter the isokinetic drying phase. This stage is characterized by a stable drying rate and particle surface moisture. By increasing the flow rate of the drying gas, we can further improve the drying efficiency to meet your higher production needs.
However, the drying process does not end there. When the moisture of the particles is dried to a certain extent, the decrease in total moisture leads to a gradual decrease in the drying rate, which is called the deceleration drying stage. This is to ensure that the moisture of the material is completely removed and to avoid over-drying that can damage the quality of the material.
Eventually, when the water evaporation and moisture absorption on the surface of the particles reaches equilibrium, and the drying rate tends to zero, we usher in the equilibrium phase. At this time, the moisture content of the material has reached the predetermined requirements, marking the successful completion of the entire drying process.
With its unique pressure flash evaporation principle, our rotary flash dryer realizes efficient and fast drying of powder materials. By precisely controlling operating parameters and gas flow rates, we can not only meet the quality requirements of different materials and products, but also help you improve production efficiency and reduce costs.