A commonly used term for a primary carbonization
or raw coke
) from high-boiling hydrocarbon fractions (heavy residues of petroleum or coal processing)
produced by the delayed coking process
has, with only a few exceptions, a better graphitizability than cokes
produced by other coking
processes even if the same feedstock is used. Delayed coke
contains a mass fraction
of volatile matter between 4 and 15 wt% which can be released during heat treatment.
PAC, 1995, 67, 473
(Recommended terminology for the description of carbon as a solid (IUPAC Recommendations
on page 486
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook