granular carbon

https://doi.org/10.1351/goldbook.G02682
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.
Note:
Although limits of size cannot be exactly defined,
coke
grains obtained by grinding belong to coarse
particulate carbon
for grain sizes above ca. 100 μm, or to fine
particulate carbon
for grain sizes below ca. 100 μm.
Colloidal
graphite
obtained by grinding of
natural graphite
is a typical extra fine
particulate carbon
. Industrial carbon materials (such as electrodes) are made with
fillers
composed of coarse
particulate carbon
(
coke
grains) and fine
particulate carbon
(flour), and sometimes even
colloidal carbon
,
carbon blacks
or
soot
). They are therefore polygranular materials.
Source:
PAC, 1995, 67, 473. (Recommended terminology for the description of carbon as a solid (IUPAC Recommendations 1995)) on page 491 [Terms] [Paper]