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Factors affecting the volatile-matter yield from chars

✍ Scribed by Brian C. Young

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
630 KB
Volume
59
Category
Article
ISSN
0016-2361

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✦ Synopsis

Regulations for the safe transport of chars that may self-heat specify an upper limit for their volatilematter yield. However, the volatile matter of chars made from two Australian coals has been shown to consist not only of the inherent volatiles remaining after carbonization of the parent coal, but also of adsorbed species derived from the environment to which the chars are subjected following their preparation.

The significance of the contribution from adsorbed species becomes greater with increasing carbonization temperature.

Consequently the storage history, e.g. weathering, must be taken into account when using the volatile-matter yield as a guide in assessing the tendency of a char to self-heat.

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