Advances and challenges in powder flowability and fluidization quality

Flowability and fluidization quality of bulk solids are closely interlinked and decisive for the processing behavior and homogeneity of product quality in many applications, ranging from fine chemicals to energy generation. In this perspective, we summarize recent advances in the modification of flowability towards the improvement of fluidization quality, with a special focus on cohesive (Geldart-C) particles. Furthermore, open challenges are named, directions are given, and methods (e.g. machine learning and AI) are discussed to address them.