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ASTM D1412/D1412M-17

(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 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.

General Information

Status
Historical
Publication Date
31-May-2017
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-15 - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30°C
Effective Date
01-Jun-2017
Replaced By
ASTM D1412/D1412M-17a - Standard Test Method for Equilibrium Moisture of Coal at 96 to 97 Percent Relative Humidity and 30 °C
Effective Date
01-Aug-2017
Referred By
ASTM D388-23 - Standard Classification of Coals by Rank
Effective Date
01-Jun-2017

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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 − 17
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 D3172 Practice for Proximate Analysis of Coal and Coke
D3173 Test Method for Moisture in the Analysis Sample of
1.1 This test method covers determination of the equilib-
Coal and Coke
rium moisture of coal in an atmosphere over a saturated
D3302 Test Method for Total Moisture in Coal
solution of potassium sulfate at 30 °C.
D4596 Practice for Collection of Channel Samples of Coal
NOTE 1—For information concerning the experimental work on which
in a Mine
2
this test method is based, see (1-5).
E177 Practice for Use of the Terms Precision and Bias in
1.2 The values stated in either SI units or inch-pound units
ASTM Test Methods
are to be regarded separately as standard. The values stated in
E691 Practice for Conducting an Interlaboratory Study to
each system may not be exact equivalents; therefore, each
Determine the Precision of a Test Method
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
3. Significance and Use
with the standard.
3.1 This test method affords a means of estimating the
1.3 This standard does not purport to address all of the
inherent moisture of either coal that is wet and shows visible
safety concerns, if any, associated with its use. It is the
surface moisture or coal that may have lost some moisture. It
responsibility of the user of this standard to establish appro-
may be used for estimating the surface, or extraneous moisture
priate safety and health practices and determine the applica-
of wet coal, such moisture being the difference between the
bility of regulatory limitations prior to use.
total moisture as determined by Test Method D3302 and the
1.4 This international standard was developed in accor-
equilibrium moisture.
dance with internationally recognized principles on standard-
3.2 When samples are collected in conformity with Classi-
ization established in the Decision on Principles for the
fication D388, the equilibrium moisture is considered to be
Development of International Standards, Guides and Recom-
equal to bed moisture with the exception of some low rank
mendations issued by the World Trade Organization Technical
coals that yield equilibrium moisture values below bed mois-
Barriers to Trade (TBT) Committee.
ture.
2. Referenced Documents
3.3 The results obtained by this test method are sensitive to
3
2.1 ASTM Standards:
many influences, and therefore, raw (uncorrected) equilibrium
D121 Terminology of Coal and Coke
moisture data may be of limited value in and of themselves.
D388 Classification of Coals by Rank
When working with low rank coals, the results yielded by this
D2013 Practice for Preparing Coal Samples for Analysis
test method require critical assessments. It is recommended
D2234/D2234M Practice for Collection of a Gross Sample
that the procedure outlined in the Appendix X1 be applied, and
of Coal
the results corrected before use in situations where a more
reliable estimation inherent or bed moisture for low rank coals
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
is required. The Appendix also provides useful quality assur-
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
ance information which is applicable to coals of all ranks.
Analysis.
Current edition approved June 1, 2017. Published June 2017. Originally
approved in 1956. Last previous edition approved in 2015 as D1412 – 15. DOI: 4. Apparatus
10.1520/D1412_D1412M-17.
2
4.1 Water Bath or Insulated Air Cabinet—The bath or
The boldface numbers in parentheses refer to a list of references at the end of
this standard.
cabinet shall be of sufficient size to accommodate several
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
vacuum-type desiccators, and shall be provided with a tem-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
perature regulator to maintain a uniform temperature of 30.0
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. °C 6 0.2 °C.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1412/D1412M − 17
4.2 Moisture Oven—The oven shall be so constructed as to 5. Reagents
have a uniform temper
...

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 − 15 D1412/D1412M − 17
Standard Test Method for
Equilibrium Moisture of Coal at 96 to 97 Percent Relative
1
Humidity and 30°C30 °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.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 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.
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
D4596 Practice for Collection of Channel Samples of Coal in a Mine
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 bedinherent 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
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 Sept. 1, 2015June 1, 2017. Published September 2015 June 2017. Originally approved in 1956 .1956. Last previous edition approved in 20072015
as D1412 – 07.D1412 – 15. DOI: 10.1520/D1412_D1412M-15.10.1520/D1412_D1412M-17.
2
The boldface numbers in parentheses refer to a 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D1412/D1412M − 17
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 coa
...

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SCOPE
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Standard Test Method for Bulk Density of Crushed Bituminous Coal

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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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