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In the DMR flash dryer, the wet material is fed through customized feeding systems into the milling and drying section of the dryer's main body. The milling rotor disperses the wet material into very fine particles and the fine particles are fluidized in the milling chamber by temperature-controlled, hot gas coming in from the air heater.
The hot air (or inert gas) can be heated up to 650°C and as the wet product is dispersed, it is reduced in size in the bottom section of the DMR flash dryer. The drying system is kept under a negative pressure by the exhaust fan and the surface area of the product is increased enormously so that water (or other solvents) is evaporated instantaneously.
The dry and fine particles are conveyed with the gas stream to the top section of the DMR flash dryer where a separator classifies the particles by size. Then the particles pass the classifier at the set cut point and are conveyed with the exhaust air to a powder-air separating system like a cyclone, cyclone filter or cyclone scrubbers.
The DMR flash dryer retains a fluidized bed of product in the drying chamber to ensure a low level of adhesion of wet material on the inside wall of the drying chamber. Moreover, process parameters like classifier speed and outlet temperature can be adapted to control moisture content and particle size of the end product.
