The fluidized bed spray granulation is an innovative method to gain compact and nearly round granules with extraordinary physical properties. The solid-containing liquids (e.g. suspensions or emulsions) are atomized in the fluidised bed and, as little droplets, hit the granule seeds. Thus, the liquid evaporates and the solid substance is drawn on the granule seed, forming a stable coat. This is continuously repeated in the fluidised bed, so that very compact, shell-like granules are produced. This is called layering process.
