4. Glossary
Rang; rank
Coal rank is both an indicator of the degree of carbonization of the material. High-rank coal is characterized by a high carbon content (>70% on dry basis) and low-rank coal by a lower carbon content. Various parameters are used to classify coal between high and low rank: the volatile matter index (low = high rank / high = low rank), the carbon content, but also its moisture content and its maximum reflectance power. All these parameters can be found in the United Nations' coal classification tables.
Sample
A sample is made up of the sum of elementary samples collected according to time and space interval rules, in an optimal way on a flow of moving materials to guarantee its representativeness.
Withdrawal; increment
This involves collecting a certain...
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Glossary
Bibliography
Reference standards
Warning: revision dates are the latest available at the time of publication of this booklet. Standards are revised at regular intervals, so it's important to check for the latest edition.
- Standard terminology of coal and coke. - ASTM D 121 - 2015
- Standard classification of coals by rank. - ASTM D 388 - 2017
- Classification des charbons. - ISO 11760 - 2005
- Solid mineral fuels....
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