Moisture-holding capacity of coals

As a result of a comprehensive study of 63 samples of coal concentrates (from Ukraine, Russia and countries outside the former Soviet Union), it was established that the prediction of the moisture-holding capacity of coals can be appropriately performed according to their values of W a , R 0 , O d d...

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Bibliographic Details
Published in:Solid fuel chemistry 2017-11, Vol.51 (6), p.337-348
Main Authors: Balaeva, Ya. S., Miroshnichenko, D. V., Kaftan, Yu. S.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Coal
Linear equations
Moisture
Oxidation
Physical Chemistry
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Summary:As a result of a comprehensive study of 63 samples of coal concentrates (from Ukraine, Russia and countries outside the former Soviet Union), it was established that the prediction of the moisture-holding capacity of coals can be appropriately performed according to their values of W a , R 0 , O d daf , and O s daf . It was found that the oxidation of coal increased its moisture-holding capacity; however, in this case, the absolute change in this parameter was smaller than the error of its determination (0.5%). Therefore, upon the oxidation of almost 30% of the organic matter of coal, the moisture-holding capacity increased by only 0.4%. There is a close correlation between the maximum moisture capacity of coals and the water pore volume, and this correlation was described by a linear equation in the studies.
ISSN:0361-5219
1934-8029
DOI:10.3103/S0361521917060027