The morphology of agglomerates has first been investigated by approximating the constituent primary particles with equivalent spheres. However, this simplified spherical primary particle model (SPPM) is questionable for agglomerates made of irregularly shaped primary particles. Therefore, the SPPM is compared with a model that is based on complete data of the real structure (real structure model, RSM). After a series of image processing steps over the 3D X-ray images, the data has been used to derive various 3D morphological descriptors (such as coordination number, coordination angle, radial distribution of primary particles and open porosity) by both the SPPM and the RSM. Maltodextrin agglomerates have been produced at different process condition by changing the inlet air temperature and spraying rate. The developed structural and morphological characterizations are applied on these agglomerates. In this way, the correlation between process parameters and morphology of the agglomerates is finally investigated.weiterlesen