While the fluidized bed is formed when a quantity of a solid particulate substance (usually present in a holding vessel) is placed under appropriate conditions to cause the solid/fluid mixture to behave as a fluid. This is usually achieved by the introduction of pressurized fluid through the particulate medium.It results in the medium then having many properties and characteristics of normal fluids;

As a reliable fluid bed dryer manufacturer, the technology of Pioneers addresses the current shortfalls of fluid bed technology such as the difficulty in scaling up the process and the need to have special configurations and extra product containers depending on whether the machine is to be used as a dryer, granulator or coater.

From:http://www.china-pharmaceutical-machine.com/news/index.html