ASTM D3175-02
(Test Method)Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke
Standard Test Method for Volatile Matter in the Analysis Sample of Coal and Coke
SCOPE
1.1 This test method determines the percentage of gaseous products, exclusive of moisture vapor, in the analysis sample which are released under the specific conditions of the test.
1.2 This test method for determination of volatile matter is empirical; because of its empirical nature, strict adherence to basic principals and permissible procedures is required to obtain valid results.
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 The values stated in SI units are to be regarded as the standard.
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Designation:D3175–02
Standard Test Method for
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Volatile Matter in the Analysis Sample of Coal and Coke
This standard is issued under the fixed designation D 3175; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 4. Summary of Test Method
1.1 This test method determines the percentage of gaseous 4.1 Volatile matter is determined by establishing the loss in
products, exclusive of moisture vapor, in the analysis sample weight resulting from heating a coal or coke under rigidly
which are released under the specific conditions of the test. controlled conditions. The measured weight loss, corrected for
1.2 This test method for determination of volatile matter is moisture as determined in Test Method D 3173 establishes the
empirical; because of its empirical nature, strict adherence to volatile matter content.Two procedures are described to permit
basic principals and permissible procedures is required to conformity with differences in sample behavior.
obtain valid results. 4.2 In this empirical test method, the use of platinum
1.3 This standard does not purport to address all of the crucibles shall be considered the standard reference method for
safety concerns, if any, associated with its use. It is the volatile matter. Platinum crucibles shall be used in determining
responsibility of the user of this standard to establish appro- the volatile matter of coke and volatile matter determined for
priate safety and health practices and determine the applica- classification of coals by rank. Volatile matter determinations
bility of regulatory limitations prior to use. by some laboratories using alternate nickel-chromium alloy
1.4 The values stated in SI units are to be regarded as the crucibles having the physical dimensions specified in 6.1 have
standard. been shown to differ from those obtained using platinum
crucibles. A laboratory utilizing nickel-chromium crucibles
2. Referenced Documents
shall first determine if a relative bias exists between the use of
2.1 ASTM Standards: nickel-chromium and platinum crucibles on the coals is being
D 346 Practice for Collection and Preparation of Coke
tested. Where a relative bias is shown to exist, the volatile
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Samples for Laboratory Analysis matter determined using nickel-chromium crucibles shall be
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D 2013 Method of Preparing Coal Samples for Analysis
corrected by a factor determined through comparison of
D 3173 Test Method for Moisture in theAnalysis Sample of
volatile matter results from both crucible types on coals being
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Coal and Coke tested or analysis of samples of known proximate analysis.
3. Terminology
5. Significance and Use
3.1 Definition: 5.1 Volatile matter, when determined as herein described,
3.1.1 sparking fuels—within the context of this test method,
may be used to establish the rank of coals, to indicate coke
fuels that do not yield a coherent cake as residue in the volatile yield on carbonization process, to provide the basis for
matter determination but do evolve gaseous products at a rate
purchasing and selling, or to establish burning characteristics.
sufficient to mechanically carry solid particles out of the
6. Apparatus
crucible when heated at the standard rate. Such coals normally
include all low-rank noncaking coals and lignites but may also 6.1 Platinum Crucible, with closely fitting cover, for coal.
include those anthracites, semianthracites, bituminous, chars The crucible shall be of not less than 10 or more than 20-mL
and cokes that lose solid particles as described above. These capacity, not less than 25 or more than 35 mm in diameter, and
are defined as sparking fuels because particles escaping at the not less than 30 or more than 35 mm in height.
higher temperatures may become incandescent and spark as 6.2 Platinum Crucible, with closely fitting cover, for coke.
they are emitted. The crucible shall be of 10-mL capacity, with capsule cover
having thin flexible sides fitting down into crucible. Or the
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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 September 10, 2002. Published October 2002. Origi-
nally published as D 3175 – 73. Last previous edition D 3175 – 01.
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Annual Book of ASTM Standards, Vol 05.05.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D3175–02
double-crucible method may be used, in which the sample is mm in height. Nickel-chromium crucibles shall be
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