ASTM D3173/D3173M-17a

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.
Designation: D3173/D3173M − 17a
Standard Test Method for
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Moisture in the Analysis Sample of Coal and Coke
This standard is issued under the fixed designation D3173/D3173M; 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 D3302Test Method for Total Moisture in Coal
1.1 Thistestmethodcoversthedeterminationofmoisturein
3. Terminology
the analysis sample of coal or coke. It is used for calculating
3.1 Definitions—For additional definitions of terms used in
other analytical results to a dry basis. When used in conjunc-
this test method, refer to Terminology D121.
tion with the air drying loss as determined in accordance with
Method D2013 or Practice D346, each analytical result can be
4. Summary of Test Method
calculated to an as-received basis:
4.1 Moisture is determined by establishing the loss in
1.2 The values stated in either SI units or inch-pound units
weight of the sample when heated under rigidly controlled
are to be regarded separately as standard. The values stated in
conditions of temperature, time and atmosphere, sample
each system may not be exact equivalents; therefore, each
weight, and equipment specifications.
system shall be used independently of the other. Combining
values from the two systems may result in non-conformance
5. Significance and Use
with the standard.
5.1 Moisture as determined by this test method is used for
1.3 This standard does not purport to address all of the
calculating other analytical results to a moisture free basis
safety concerns, if any, associated with its use. It is the
using procedures in Practice D3180. Moisture percent deter-
responsibility of the user of this standard to establish appro-
mined by this test method may be used in conjunction with the
priate safety and health practices and determine the applica-
air-dry moisture loss determined in Method D2013 and Test
bility of regulatory limitations prior to use.
Method D3302 to determine total moisture in coal. Total
1.4 This international standard was developed in accor-
moisture is used for calculating other analytical results to “as
dance with internationally recognized principles on standard-
received” basis using Practice D3180. Moisture, ash, volatile
ization established in the Decision on Principles for the
matter, and fixed carbon percents constitute the proximate
Development of International Standards, Guides and Recom-
analysis of coal and coke.
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
6. Analysis Sample
6.1 The analysis sample is that sample which has been
2. Referenced Documents
pulverized to pass 250-µm (No. 60) sieve as prepared in
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2.1 ASTM Standards:
accordance with Practice D346 or Method D2013.
D121Terminology of Coal and Coke
D346 Practice for Collection and Preparation of Coke
7. Apparatus
Samples for Laboratory Analysis
7.1 Drying Oven, for coal samples:
D2013Practice for Preparing Coal Samples for Analysis
7.1.1 Fordeterminingthemoistureofcoal,theovenshallbe
D3180Practice for Calculating Coal and Coke Analyses
so constructed as to have a uniform temperature in all parts,
from As-Determined to Different Bases
have a minimum of air space, and be capable of temperature
regulation between the limits of 104 and 110°C. It may be of
theformshowninFig.1.Provisionshallbemadeforrenewing
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This test method is under the jurisdiction of ASTM Committee D05 on Coal
the preheated air in the oven at the rate of two to four times a
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
Analysis.
minute, with the air dried as defined in 8.1.
Current edition approved Aug. 1, 2017. Published August 2017. Originally
7.1.2 In the oven shown in Fig. 1, the door should contain a
approved in 1973. Last previous edition approved in 2017 as D3173/D3173M–17.
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hole of approximately 3.2 mm [ ⁄8 in.] in diameter near the
DOI: 10.1520/D3173_D3173M-17a.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or bottom to permit a free flow of air through the oven space.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
7.2 Drying Oven, for coke samples. For determining the
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. moisture of coke, an ordinary drying oven with openings for
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