ASTM D1412-07
Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30176;C

Standard No.

ASTM D1412-07

Release Date

2007

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D1412/D1412M-15

Latest

ASTM D1412/D1412M-20

Scope

This test method affords a means of estimating the bed 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 D 3302 and the equilibrium moisture.

When samples are collected in conformity with Classification D 388, 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 30C.

Note 1

For information concerning the experimental work on which this test method is based, see ().

1.2 si-value;

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.

ASTM D1412-07 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