Spray drying plants for manufacture of dustless powders - A technical note

The paper describes the methods and the equipment for production of free flowing and dustless powders, which are often required for thermal spraying applications. The powders are made from a suspension including finely dispersed material to be agglomerated as a powder, the binder, and some other components (plasticizers, wetting agents, etc.). The binders added in the suspension play a particularly important role with regards to improving the particle size and stability. The paper also describes the alternative drying applications that can be realized using the different types of plants. The systems are described on the basis of two different types of feed product: (1) a liquid and (2) a powder.