ASTM D3302/D3302M-10
(Test Method)Standard Test Method for Total Moisture in Coal
Standard Test Method for Total Moisture in Coal
SIGNIFICANCE AND USE
The collection and treatment of the sample as specified for the referee method is intended for the express purpose of determining the total moisture in coal. The standard is available to producers, sellers, and consumers as a method of determination when other techniques or modifications are not mutually agreed upon.
The commercial method, which determines total moisture content of the crushed and divided sample, is designated as the method for total moisture for routine commercial practice.
SCOPE
1.1 This test method covers the measurement of the total moisture in coal as it exists at the site, at the time, and under the conditions it is sampled. It is applicable to coals as mined, processed, shipped, or used in normal commercial pursuits. It is not applicable to coal-water slurries, sludges, or pulverized products under 0.5-mm-diameter sieve size. It is applicable to coals of all ranks within the recognized limitations imposed by oxidation and decomposition characteristics of lower rank coals. Because of its empirical nature, strict adherence to basic principles and permissive procedures are required for valid results (see Appendix X1). This complete standard is available to producers, sellers, and consumers as a total moisture method when other procedures or modifications are not mutually agreed on.
1.2 Since coal can vary from extremely wet (water-saturated) to completely dry, special emphasis must be placed on the sampling, sample preparation, and the moisture determination itself to ensure total reliability of measurement. Therefore, this standard entails collection of the gross sample, sample preparation, and the method of determination.
1.3 While it is recognized that such a standard may be unwieldy for routine usage in commercial operations, it can provide a common base for agreement in cases of dispute or arbitration. The complete standard is referred to as the referee method. Embodied in the standard is the commercial method starting with the crushed and divided sample when the gross sample is not too wet to crush and divide. See Test Methods D2961 and D3173 for other moisture methods.
1.4 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.
1.5 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.
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Designation: D3302/D3302M – 10
Standard Test Method for
1
Total Moisture in Coal
This standard is issued under the fixed designation D3302/D3302M; 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 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers the measurement of the total
responsibility of the user of this standard to establish appro-
moisture in coal as it exists at the site, at the time, and under
priate safety and health practices and determine the applica-
the conditions it is sampled. It is applicable to coals as mined,
bility of regulatory limitations prior to use.
processed, shipped, or used in normal commercial pursuits. It
is not applicable to coal-water slurries, sludges, or pulverized
2. Referenced Documents
products under 0.5-mm-diameter sieve size. It is applicable to
2
2.1 ASTM Standards:
coals of all ranks within the recognized limitations imposed by
D121 Terminology of Coal and Coke
oxidation and decomposition characteristics of lower rank
D388 Classification of Coals by Rank
coals. Because of its empirical nature, strict adherence to basic
D2013 Practice for Preparing Coal Samples for Analysis
principles and permissive procedures are required for valid
D2234/D2234M Practice for Collection of a Gross Sample
results (seeAppendix X1). This complete standard is available
of Coal
to producers, sellers, and consumers as a total moisture method
D2961 Test Method for Single-Stage Total Moisture Less
when other procedures or modifications are not mutually
than 15 % in Coal Reduced to 2.36-mm (No. 8 Sieve)
agreed on.
Topsize
1.2 Since coal can vary from extremely wet (water-
D3173 Test Method for Moisture in theAnalysis Sample of
saturated) to completely dry, special emphasis must be placed
Coal and Coke
on the sampling, sample preparation, and the moisture deter-
D5865 Test Method for Gross Calorific Value of Coal and
mination itself to ensure total reliability of measurement.
Coke
Therefore, this standard entails collection of the gross sample,
sample preparation, and the method of determination.
3. Terminology
1.3 While it is recognized that such a standard may be
3.1 Definitions—For additional definitions of terms used in
unwieldy for routine usage in commercial operations, it can
this test method, refer to Terminology D121.
provide a common base for agreement in cases of dispute or
3.2 Definitions of Terms Specific to This Standard:
arbitration. The complete standard is referred to as the referee
3.2.1 air drying—a process of partial drying of a coal
method. Embodied in the standard is the commercial method
sample to bring it to near equilibrium with the atmosphere in
starting with the crushed and divided sample when the gross
theroominwhichfurtherreduction/divisionofthesampleisto
sample is not too wet to crush and divide. See Test Methods
take place.
D2961 and D3173 for other moisture methods.
3.2.2 air-dry loss—the loss in weight, expressed as a
1.4 The values stated in either SI units or inch-pound units
percent, resulting from each air-drying operation.
are to be regarded separately as standard. The values stated in
3.2.3 easily oxidized coals—low-rank coals such as subbi-
each system may not be exact equivalents; therefore, each
tuminous or lignitic coals.
system shall be used independently of the other. Combining
3.2.4 equilibrium—conditionreachedinairdryingwhenthe
values from the two systems may result in non-conformance
change in weight of the sample, under conditions of ambient
with the standard.
temperature and humidity, is no more than 0.1 %/h or 0.05 %/
1
⁄2 h.
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
2
Analysis. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 1, 2010. Published January 2010. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1974. Last previous edition approved in 2009 as D3302/D3302M–09. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/D3302_D3302M-10. the ASTM website.
Copyright ©ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA19428-2959, United States.
1
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D3302/D3302M – 10
FIG. 1 Total Moisture Determination on Gross Sample, Special Moisture Subsample, or on Crushed and Divided Sample
3.2.5 residual moisture—that moisture
...
This document is not anASTM standard and is intended only to provide the user of anASTM 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:D3302/D3302M–09 Designation: D3302/D3302M – 10
Standard Test Method for
1
Total Moisture in Coal
This standard is issued under the fixed designation D3302/D3302M; 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 the measurement of the total moisture in coal as it exists at the site, at the time, and under the
conditions it is sampled. It is applicable to coals as mined, processed, shipped, or used in normal commercial pursuits. It is not
applicable to coal-water slurries, sludges, or pulverized products under 0.5-mm-diameter sieve size. It is applicable to coals of all
ranks within the recognized limitations imposed by oxidation and decomposition characteristics of lower rank coals. Because of
itsempiricalnature,strictadherencetobasicprinciplesandpermissiveproceduresarerequiredforvalidresults(seeAppendixX1).
This complete standard is available to producers, sellers, and consumers as a total moisture method when other procedures or
modifications are not mutually agreed on.
1.2 Since coal can vary from extremely wet (water-saturated) to completely dry, special emphasis must be placed on the
sampling, sample preparation, and the moisture determination itself to ensure total reliability of measurement. Therefore, this
standard entails collection of the gross sample, sample preparation, and the method of determination.
1.3 While it is recognized that such a standard may be unwieldy for routine usage in commercial operations, it can provide a
common base for agreement in cases of dispute or arbitration. The complete standard is referred to as the referee method.
Embodied in the standard is the commercial method starting with the crushed and divided sample when the gross sample is not
too wet to crush and divide. See Test Methods D2961 and D3173 for other moisture methods.
1.4 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.
1.5 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.
2. Referenced Documents
2
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
D2961 Test Method for Single-Stage Total Moisture Less than 15 % in Coal Reduced to 2.36-mm (No. 8 Sieve) Topsize
D3173 Test Method for Moisture in the Analysis Sample of Coal and Coke
D5865 Test Method for Gross Calorific Value of Coal and Coke
3. Terminology
3.1 Definitions—For additional definitions of terms used in this test method, refer to Terminology D121.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 air drying—a process of partial drying of a coal sample to bring it to near equilibrium with the atmosphere in the room
in which further reduction/division of the sample is to take place.
3.2.2 air-dry loss—the loss in weight, expressed as a percent, resulting from each air-drying operation.
3.2.3 easily oxidized coals—low-rank coals such as subbituminous or lignitic coals.
1
This test method is under the jurisdiction ofASTM Committee D05 on Coal and Coke and is the direct responsibility of Subcommittee D05.21 on Methods ofAnalysis.
´1
Current edition approved May 1, 2009. Published July 2009. Originally approved in 1974. Last previous edition approved in 2007 as D3302–07a . DOI:
10.1520/D3302_D3302M-09.
Current edition approved Jan. 1, 2010. Published January 2010. Originally approved in 1974. Last previous edition approved in 2009 as D3302/D3302M–09. DOI:
10.1520/D3302_D3302M-10.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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,
...
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