Micron Drymeister Flash Dryer

The Drymeister® Flash Dryer combines drying, milling and classifying in a single system with inlet gas temperatures up to 600°C. The Drymeister is an economical alternative to spray dryers that can transform damp feed material into an ultra-fine powder with an extremely narrow particle size distribution. This system is available from pilot up to full production models with 400 HP.

Even challenging materials can be processed efficiently thanks to the integrated high-shear rotor, which ensures rapid drying, effective deagglomeration and precise particle size control. By consolidating multiple process steps, it simplifies operations, lowers energy consumption and reduces overall operating costs.

How it Works

The wet material is fed through customized feeding systems into the grinding and drying section of the dryer’s main body. The grinding rotor disperses the wet material into very fine particles and the fine particles are fluidized in the grinding 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 dryer. The 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 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 the cyclone, cyclone filter or cyclone scrubbers.

The Micron Dryer 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.