grobgranuliert

Grobgranuliert is a German term meaning coarsely granulated or coarse-grained. It describes a material in which the particles or granules are relatively large and easily visible, in contrast to fine-grained materials. The exact size thresholds that define grobgranuliert vary by field and application, and there is no universal standard.

In geology and mineralogy, grobgranuliert textures refer to rocks or sediments with large, well-formed grains, often indicating slower cooling or specific depositional histories. In soil science, a grobgranuliert texture denotes a predominance of coarse fractions such as sand and larger, which affects porosity, drainage, and erosion susceptibility. In industry and agriculture, grobgranuliert products are those produced as or classified into granules or pellets, including coarse fertilizers, plastic or ceramic granules, and road-salt pellets. Such granularity influences handling, flow behavior, packing density, and reaction or dissolution rates.

Properties and processing considerations: coarse granularity generally leads to higher bulk porosity and better permeability but can reduce surface area and reactivity. It also impacts flow and segregation during storage and transport. Manufacturing often involves screening, granulation, or pelletizing to achieve the desired particle size distribution and to meet specific application requirements.

See also: granulometry, granulation, coarse-grained.