1995 | OriginalPaper | Chapter
The Contents and Some Related Aspects of Trace Elements in Coals
Author : D. J. Swaine
Published in: Environmental Aspects of Trace Elements in Coal
Publisher: Springer Netherlands
Included in: Professional Book Archive
Activate our intelligent search to find suitable subject content or patents.
Select sections of text to find matching patents with Artificial Intelligence. powered by
Select sections of text to find additional relevant content using AI-assisted search. powered by
The contents of trace elements in coals are clearly relevant to any environmental aspect during mining, beneficiation and usage. There are published data for 66 trace elements in coals, surely not a surprising fact ‘for a naturally occurring material formed under varying conditions over a long period’ (Swaine, 1985). There is a comprehensive account of trace elements in coals, including tabulated data for the 24 elements of environmental interest (Swaine, 1990). Results should be stated on a coal basis and in order to avoid the error of inferring that ash is an inherent part of coal, reference should be made to mineral matter in coal and to ash yield, a product of the heating of coal under stated conditions at a specific temperature.