granular carbon
The term granular carbon is equivalent to coarse particulate carbon. This is a carbon material consisting of separate particles or grains which are monolithic, on the average larger than about 100 µm in diameter, but smaller than about 1 cm.
Although limits of size cannot be exactly defined, @C01142@ grains obtained by grinding belong to coarse @P04433@ for grain sizes above ca. 100 µm, or to fine @P04433@ for grain sizes below ca. 100 µm. @C01172@ @G02684@ obtained by grinding of @N04088@ is a typical extra fine @P04433@. Industrial carbon materials (such as electrodes) are made with @F02363@ composed of coarse @P04433@ (@C01142@ grains) and fine @P04433@ (flour), and sometimes even @C01173@, @C00824@ or @S05768@). They are therefore polygranular materials.
PAC, 1995, 67, 473. 'Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)' on page 491 (