https://doi.org/10.1351/goldbook.C01118
The primary industrial solid
carbonization
product obtained from coal tar pitch
mainly produced in chamber or delayed coking processes
.Note:
Coal-derived
Coal-derived
pitch
coke
, although it exhibits a pregraphitic microstructure, has often a lower graphitizability than petroleum coke
. Fractions of coal tar pitches (obtained by extraction
or filtration
) may form cokes
with needle-like structures and have an improved graphitizability. The usually lower graphitizability compared to petroleum coke
is due to an inhibition
of mesophase
growth because of chemical and physical differences of the cokes.