ASTM D1412/D1412M-17a
Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30&x2009;&xb0;C
- Standard No.
- ASTM D1412/D1412M-17a
- Release Date
- 2017
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D1412/D1412M-18
- Latest
- ASTM D1412/D1412M-20
- Scope
-
3.1 This test method affords a means of estimating the inherent moisture of either coal that is wet and shows visible surface moisture or coal that may have lost some moisture. It may be used for estimating the surface, or extraneous moisture of wet coal, such moisture being the difference between the total moisture as determined by Test Method D3302 and the equilibrium moisture.
3.2 When samples are collected in conformity with Classification D388, the equilibrium moisture is considered to be equal to bed moisture with the exception of some low rank coals that yield equilibrium moisture values below bed moisture.
3.3 The results obtained by this test method are sensitive to many influences, and therefore, raw (uncorrected) equilibrium moisture data may be of limited value in and of themselves. When working with low rank coals, the results yielded by this test method require critical assessments. It is recommended that the procedure outlined in the Appendix X1 be applied, and the results corrected before use in situations where a more reliable estimation inherent or bed moisture for low rank coals is required. The Appendix also provides useful quality assurance information which is applicable to coals of all ranks.
1.1 This test method covers determination of the equilibrium moisture of coal in an atmosphere over a saturated solution of potassium sulfate at 308201;°C.
Note 1: For information concerning the experimental work on which this test method is based, see (1-5).2
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This 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 and health practices and determine the applicability of regulatory limitations prior to use.
1.4 This 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.
ASTM D1412/D1412M-17a Referenced Document
- ASTM D121 Standard Terminology of Coal and Coke
- ASTM D2013 Standard Method of Preparing Coal Samples for Analysis
- ASTM D2234/D2234M Standard Practice for Collection of a Gross Sample of Coal
- ASTM D3172 Standard Practice for Proximate Analysis of Coal and Coke
- ASTM D3173 Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
- ASTM D3302 Standard Test Method for Total Moisture in Coal
- ASTM D388 Standard Classification of Coals by Rank
- ASTM D4596 Standard Practice for Collection of Channel Samples of Coal in a Mine
- ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
- ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D1412/D1412M-17a history
- 2020 ASTM D1412/D1412M-20 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
- 2019 ASTM D1412/D1412M-19b Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
- 2019 ASTM D1412/D1412M-19a Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
- 2019 ASTM D1412/D1412M-19 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
- 2018 ASTM D1412/D1412M-18 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
- 2017 ASTM D1412/D1412M-17a Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30&x2009;&xb0;C
- 2017 ASTM D1412/D1412M-17 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
- 2015 ASTM D1412/D1412M-15 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30&xb0;C
- 2007 ASTM D1412-07 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176;C
- 2004 ASTM D1412-04 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176;C
- 2003 ASTM D1412-03 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176C
- 2002 ASTM D1412-02a Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176C
- 2002 ASTM D1412-02 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176C
- 1999 ASTM D1412-99 Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176C
- 1993 ASTM D1412-93(1997) Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30鸆
