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Shrinking, swelling and true density of Morwell brown coal

โœ Scribed by Robert S. Yost; Dennis E. Creasy

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
369 KB
Volume
69
Category
Article
ISSN
0016-2361

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โœฆ Synopsis

With respect to rheological work on brown coal slurries, it is important to know the volumetric concentration accurately. This requires the determination of volume changes that occur on coal pretreatment and liquid medium addition. It is pointed out that for brown coal the value of the true density to be used should be determined by liquid pycnometry in the relevant fluid, and not by helium on the dried coal.

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โœ Sat Parkash ๐Ÿ“‚ Article ๐Ÿ“… 1985 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 390 KB

Multivariate correlation, indicating strong dependence of coal density on elemental composition, expressed on a dry, ash-free basis [pHe= 3.5742 -(0.0197C + 0.01920) -0.0691 H] is proposed for low-rank coals (C, 70.8-75.8 wt%; reflectance 0.24-0.48%), maceral concentrates and chars produced (550-700