ASTM D 388 : 2019 : REV A
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Classification of Coals by Rank
Hardcopy , PDF
24-06-2023
English
04-05-2021
Committee |
D 05
|
DocumentType |
Standard
|
Pages |
8
|
PublisherName |
American Society for Testing and Materials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
1.1This standard covers the classification of coals by rank, that is, according to their degree of metamorphism, or progressive alteration, in the natural series from lignite to anthracite.
1.2This classification is applicable to coals that are composed mainly of vitrinite.
Note 1:Coals rich in inertinite or liptinite (exinite), or both, cannot be properly classified because, in those macerals, the properties that determine rank (calorific value, volatile matter, and agglomerating character) differ greatly from those of vitrinite in the same coal. Often, such coals can be recognized by megascopic examination. In North America, these coals are mostly nonbanded varieties that contain only a small proportion of vitrain and consist mainly of attrital materials. The degree of metamorphism of nonbanded and other vitrinite-poor coals can be estimated by determining the classification properties of isolated or concentrated vitrinite fractions, or by determining the reflectance of the vitrinite (see Test Method D2798 and Appendix X1 of this classification). However, in the use of these vitrinite-poor coals, some properties normally associated with rank, such as rheology, combustibility, hardness, and grindability (as well as the rank determining properties) may differ substantially from those of vitrinite-rich coals of the same degree of metamorphism.
1.3The accuracy of the classification of impure coal may be impaired by the effect of large amounts of mineral matter on the determination of volatile matter and calorific value, and on their calculation to the mineral-matter-free basis.
1.4The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.
1.4.1Exception—The values stated in British thermal units per pound (Btu/lb) are to be regarded as the standard. The SI equivalents of Btu/lb are provided for information only and are not considered standard.
1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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ASTM D 2798 : 2011 : REV A : R2019 | Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal |
ASTM D 2234/D2234M : 2009 | Standard Practice for Collection of a Gross Sample of Coal |
ASTM D 5865 : 1999 : REV A | Standard Test Method for Gross Calorific Value of Coal and Coke |
ASTM D 3175 : 2001 | Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke |
ASTM D 4596 : 2009 : R2015 | Standard Practice for Collection of Channel Samples of Coal in a Mine |
ASTM D 720/D720M : 2015 : EDT 1 | Standard Test Method for Free-Swelling Index of Coal |
ASTM D 5192 : 2009 : R2015 | Standard Practice for Collection of Coal Samples from Core |
ASTM D 3302/D3302M : 2022 | Standard Test Method for Total Moisture in Coal |
ASTM D 2013/D2013M : 2020 | Standard Practice for Preparing Coal Samples for Analysis |
ASTM D 5865 : 2001 : REV A | Standard Test Method for Gross Calorific Value of Coal and Coke |
ASTM D 121 : 2000 : EDT 1 | Standard Terminology of Coal and Coke |
ASTM D 2798 : 2021 | Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal |
ASTM D 2798 : 2009 | Standard Test Method for Microscopical Determination of the Vitrinite Reflectance of Coal |
ASTM D 3174 : 2002 | Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal |
ASTM D 3175 : 2018 | Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke |
ASTM D 121 : 2001 | Standard Terminology of Coal and Coke |
ASTM D 3175 : 1989 : REV A : R1997 | Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke |
ASTM D 5865 : 2001 | Standard Test Method for Gross Calorific Value of Coal and Coke |
ASTM D 3302/D3302M : 2019 | Standard Test Method for Total Moisture in Coal |
ASTM D 720/D720M : 2022 | Standard Test Method for Free-Swelling Index of Coal |
ASTM D 3172 : 1989 : R1997 | Standard Practice for Proximate Analysis of Coal and Coke |
ASTM D 3175 : 2020 | Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke |
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