An electrode for an electrical application. In its green state it comprises
granular carbon material bound with
pitch. The
granular carbon material may be either
needle coke, fine-grained or
isotropiccoke or reclaimed
graphite powder. Electrodes for use in steel production can only be manufactured from
needle coke, and the green electrodes are fired at temperatures above around
to produce highly
graphite electrodes. The other
granular carbon materials may be used for aluminium electrodes where the duty is not so severe, and
the green electrodes are generally fired to lower temperatures.
Note:
In both cases it is essential that the granular carbons and the
pitch binders used in the production of the green electrodes have a low sulfur content
as the release of sulfur during the high-temperature firing can lead to the production
of significant
porosity.
Source:
PAC, 1995, 67, 473
(Recommended terminology for the description of carbon as a solid (IUPAC Recommendations
1995))
on page 480
Cite as:
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.
