Fluid-Bed Processing in the 1990s

Dilip M. Parikh, Batch fluid-bed processing has been used in the pharmaceutical industry for the past 30 years. Figure 1 shows the components of a typical fluid-bed processor. The technology was originally developed specifically for rapid drying. Over the years, fluid-bed processing has come into routine use for other applications such as agglomeration, air suspension coating, rotary pelletization, and powder and solution layering, but the principle of the fluid bed has not changed



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