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ASTM D1412/D1412M-19

(Test Method)

Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C

Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C

SIGNIFICANCE AND USE
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.
SCOPE
1.1 This test method covers determination of the equilibrium moisture of coal in an atmosphere over a saturated solution of potassium sulfate at 30 °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 are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
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, health, and environmental 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.

General Information

Status
Historical
Publication Date
31-May-2019
ICS
73.040 - Coals
Technical Committee
D05 - Coal and Coke
Drafting Committee
D05.21 - Methods of Analysis
Current Stage
Ref Project

Relations

Replaces
ASTM D1412/D1412M-18 - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
Effective Date
01-Jun-2019
Referred By
ASTM D388-23 - Standard Classification of Coals by Rank
Effective Date
01-Jun-2019

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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D1412/D1412M − 19
Standard Test Method for
Equilibrium Moisture of Coal at 96 to 97 Percent Relative
1
Humidity and 30 °C
This standard is issued under the fixed designation D1412/D1412M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D2234/D2234M Practice for Collection of a Gross Sample
of Coal
1.1 This test method covers determination of the equilib-
D3172 Practice for Proximate Analysis of Coal and Coke
rium moisture of coal in an atmosphere over a saturated
D3173 Test Method for Moisture in the Analysis Sample of
solution of potassium sulfate at 30 °C.
Coal and Coke
NOTE 1—For information concerning the experimental work on which
D3302 Test Method for Total Moisture in Coal
2
this test method is based, see (1-5).
D4239 Test Method for Sulfur in the Analysis Sample of
1.2 The values stated in either SI units or inch-pound units
Coal and Coke Using High-Temperature Tube Furnace
are to be regarded separately as standard. The values stated in
Combustion
each system are not necessarily exact equivalents; therefore, to
D4596 Practice for Collection of Channel Samples of Coal
ensure conformance with the standard, each system shall be
in a Mine
used independently of the other, and values from the two
D5865 Test Method for Gross Calorific Value of Coal and
systems shall not be combined.
Coke
E177 Practice for Use of the Terms Precision and Bias in
1.3 This standard does not purport to address all of the
ASTM Test Methods
safety concerns, if any, associated with its use. It is the
E691 Practice for Conducting an Interlaboratory Study to
responsibility of the user of this standard to establish appro-
Determine the Precision of a Test Method
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
3. Significance and Use
1.4 This international standard was developed in accor-
3.1 This test method affords a means of estimating the
dance with internationally recognized principles on standard-
inherent moisture of either coal that is wet and shows visible
ization established in the Decision on Principles for the
surface moisture or coal that may have lost some moisture. It
Development of International Standards, Guides and Recom-
may be used for estimating the surface, or extraneous moisture
mendations issued by the World Trade Organization Technical
of wet coal, such moisture being the difference between the
Barriers to Trade (TBT) Committee.
total moisture as determined by Test Method D3302 and the
2. Referenced Documents equilibrium moisture.
3
3.2 When samples are collected in conformity with Classi-
2.1 ASTM Standards:
fication D388, the equilibrium moisture is considered to be
D121 Terminology of Coal and Coke
equal to bed moisture with the exception of some low rank
D388 Classification of Coals by Rank
coals that yield equilibrium moisture values below bed mois-
D2013 Practice for Preparing Coal Samples for Analysis
ture.
3.3 The results obtained by this test method are sensitive to
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
many influences, and therefore, raw (uncorrected) equilibrium
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
Analysis.
moisture data may be of limited value in and of themselves.
Current edition approved June 1, 2019. Published June 2019. Originally
When working with low rank coals, the results yielded by this
approved in 1956. Last previous edition approved in 2018 as D1412/D1412M – 18.
test method require critical assessments. It is recommended
DOI: 10.1520/D1412_D1412M-19.
2
that the procedure outlined in the Appendix X1 be applied, and
The boldface numbers in parentheses refer to the list of references at the end of
this standard.
the results corrected before use in situations where a more
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
reliable estimation inherent or bed moisture for low rank coals
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
is required. The Appendix also provides useful quality assur-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ance information which is applicable to coals of all ranks.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1412/D1412M − 19
4. Apparatus 4.9 Filter Pump, aspirator.
1
4.1 Water Bath or
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D1412/D1412M − 18 D1412/D1412M − 19
Standard Test Method for
Equilibrium Moisture of Coal at 96 to 97 Percent Relative
1
Humidity and 30 °C
This standard is issued under the fixed designation D1412/D1412M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This test method covers determination of the equilibrium moisture of coal in an atmosphere over a saturated solution of
potassium sulfate at 30 °C.
2
NOTE 1—For information concerning the experimental work on which this test method is based, see (1-5).
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 mayare not benecessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other. Combiningother, and values from the two systems may result in non-conformance with the
standard.shall not be combined.
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, health, and environmental 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.
2. Referenced Documents
3
2.1 ASTM Standards:
D121 Terminology of Coal and Coke
D388 Classification of Coals by Rank
D2013 Practice for Preparing Coal Samples for Analysis
D2234/D2234M Practice for Collection of a Gross Sample of Coal
D3172 Practice for Proximate Analysis of Coal and Coke
D3173 Test Method for Moisture in the Analysis Sample of Coal and Coke
D3302 Test Method for Total Moisture in Coal
D4239 Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion
D4596 Practice for Collection of Channel Samples of Coal in a Mine
D5865 Test Method for Gross Calorific Value of Coal and Coke
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Significance and Use
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.
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of Analysis.
Current edition approved Nov. 1, 2018June 1, 2019. Published November 2018June 2019. Originally approved in 1956. Last previous edition approved in 20172018 as
D1412/D1412M – 17a.D1412/D1412M – 18. DOI: 10.1520/D1412_D1412M-18.10.1520/D1412_D1412M-19.
2
The boldface numbers in parentheses refer to athe list of references at the end of this standard.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1412/D1412M − 19
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
me
...

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SCOPE
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3.1 This test method concerns the compaction of crushed coal to determine either its compacted or uncompacted bulk density, for purposes such as charging coke ovens.
SCOPE
1.1 This test method covers two procedures for determining the bulk density of crushed coal less than 37.5 mm [1.5 in.] in size, such as is charged into coke ovens, as follows:  
1.1.1 Procedure A—The cone procedure for determining an uncompacted bulk density.
1.1.1.1 Standard Method—Procedure employs the use of a 115 mm [4.5 in.] chute opening and a measuring box having dimensions of 305 mm x 305 mm x 305 mm [12.0 in. x 12.0 in. x 12.0 in.].
1.1.1.2 Alternate Method—Procedure employs the use of a 203 mm [8.0 in.] chute opening and a measuring box having dimensions of 203 mm x 203 mm x 305 mm [8.0 in. x 8.0 in. x 12.0 in.] for coals with a total moisture greater than 7 %.  
1.1.2 Procedure B—The dropped-coal procedure for determining a compacted bulk density, comparable to actual bulk densities attained in coke ovens.  
1.2 This test method is not applicable to the testing of powdered coal as used in boiler plants, nor to the determination of the bulk density of coal in storage piles.  
1.3 Units—The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

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  • Standard
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