Granulierbar

Granulierbar is a term used in process engineering and materials science to describe a substance that can be converted into granules. Granulation produces particles with defined size ranges and improved handling. Materials that are granulable typically exhibit a balance of flowability, compressibility, and stability that allows the formation of cohesive granules under controlled processing conditions. The concept is applied across pharmaceuticals, agriculture, chemicals and food processing.

There are several common approaches to granulation. Wet granulation uses a liquid binder to bind particles in equipment such as high-shear mixers, granulators or fluidized beds, followed by drying and sieving to the desired size. Dry granulation avoids moisture by compacting the powder (roller compaction or slugging) and then milling into granules. Other methods include extrusion-spheronization, prilling, spray drying and drum granulation, chosen according to material properties and target granule characteristics.

Key factors influencing granulability include particle size distribution, moisture content, surface energy, hardness and wettability, as well as binder type and concentration, process temperature and shear conditions. Equipment design and post-processing steps such as drying, cooling and screening determine final granule size, shape and strength.

Applications of granulable materials span pharmaceutical formulations, where granules are used for tablet or capsule manufacturing, to fertilizers, food additives and catalysts. Granulation can improve flow, dosing accuracy, bulk density, dust control and storage stability.

Limitations arise for materials that are highly cohesive, extremely fine, or chemically reactive with binders or moisture. In such cases, achieving uniform granule size and sufficient mechanical strength may require specialized binders, coatings or processes, and costs can be higher than for non-granulated powders.