✦ LIBER ✦

A formula for the mineral matter to ash ratio for low rank coals

✍ Scribed by Vincent R. Gray

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 438 KB
Volume: 62
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(83)90261-2

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✦ Synopsis

Existing formulae relating mineral matter to ash yield of coal, which assume that all the mineral matter is separate from the coal, do not apply to low rank coal because part of the mineral matter is bound in the coal substance. A mineral matter/ash formula is derived for low rank coal that allows the calculation of the ratio of mineral matter to ash for a sample of any coal the basic properties of which have been determined. The formula requires a modification to the procedures previously developed for calculating basic properties of low rank coals. Basic properties and the parameters determining the mineral matter to ash ratio are presented for New Zealand sub-bituminous Waikato coals.

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