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ASTM D4239-18e1

(Test Method)

Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion

Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion

SIGNIFICANCE AND USE
4.1 Sulfur is part of the ultimate analysis of coal and coke.  
4.2 Results of the sulfur analysis are used for evaluation of coal preparation and cleaning, evaluation of potential sulfur emissions from coal and coke combustion or conversion processes, and evaluation of coal and coke quality in relation to contract specifications, as well as for scientific purposes.  
4.3 The competency of laboratories with respect to use of this standard can be established through reference to Practice D7448.
SCOPE
1.1 This test method covers the determination of sulfur in samples of coal or coke by high-temperature tube furnace combustion.  
1.1.1 Two analysis methods are described.  
1.2 When automated equipment is used, either method can be classified as an instrumental method.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
1.4 All percentages are percent mass fractions unless otherwise noted.  
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.6 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
Published
Publication Date
31-Aug-2018
ICS
75.160.10 - Solid fuels
Technical Committee
D05 - Coal and Coke
Drafting Committee
D05.21 - Methods of Analysis
Current Stage
Ref Project

Relations

Refers
ASTM D3180-15 - Standard Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
Effective Date
01-Jan-2015
Refers
ASTM D3176-15 - Standard Practice for Ultimate Analysis of Coal and Coke
Effective Date
01-Jan-2015
Refers
ASTM D7448-16 - Standard Practice for Establishing the Competence of Laboratories Using ASTM Procedures in the Sampling and Analysis of Coal and Coke
Effective Date
01-Mar-2016
Refers
ASTM D3173/D3173M-17 - Standard Test Method for Moisture in the Analysis Sample of Coal and Coke
Effective Date
01-Feb-2017

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ASTM D4239-18e1 - Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace CombustionASTM D4239-18e1 - Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion
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ASTM D4239-18e1 - Standard Test Method for Sulfur in the Analysis Sample of Coal and Coke Using High-Temperature Tube Furnace Combustion
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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.
´1
Designation: D4239 − 18
Standard Test Method for
Sulfur in the Analysis Sample of Coal and Coke Using High-
1
Temperature Tube Furnace Combustion
This standard is issued under the fixed designation D4239; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1
ε NOTE—Table 1 was corrected editorially in October 2018.
1. Scope* D2013/D2013M Practice for Preparing Coal Samples for
Analysis
1.1 This test method covers the determination of sulfur in
D3173/D3173M Test Method for Moisture in the Analysis
samples of coal or coke by high-temperature tube furnace
Sample of Coal and Coke
combustion.
D3176 Practice for Ultimate Analysis of Coal and Coke
1.1.1 Two analysis methods are described.
D3180 Practice for Calculating Coal and Coke Analyses
1.2 When automated equipment is used, either method can
from As-Determined to Different Bases
be classified as an instrumental method.
D7448 Practice for Establishing the Competence of Labora-
1.3 The values stated in SI units are to be regarded as tories Using ASTM Procedures in the Sampling and
Analysis of Coal and Coke
standard. The values given in parentheses after SI units are
provided for information only and are not considered standard. D7582 Test Methods for Proximate Analysis of Coal and
Coke by Macro Thermogravimetric Analysis
1.4 All percentages are percent mass fractions unless other-
E691 Practice for Conducting an Interlaboratory Study to
wise noted.
Determine the Precision of a Test Method
1.5 This standard does not purport to address all of the
3
2.2 ISO Standard:
safety concerns, if any, associated with its use. It is the
ISO 5725-6 Accuracy (trueness and precision) of measure-
responsibility of the user of this standard to establish appro-
ment methods and results—Part 6: Use in practice of
priate safety, health, and environmental practices and deter-
accuracy values
mine the applicability of regulatory limitations prior to use.
ISO 11722 Solid mineral fuels—Hard coal—Determination
1.6 This international standard was developed in accor-
of moisture in the general analysis test sample by drying
dance with internationally recognized principles on standard-
in nitrogen
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3. Summary of Test Method
mendations issued by the World Trade Organization Technical
3.1 Combustion Method A (1350 °C)—A weighed test por-
Barriers to Trade (TBT) Committee.
tion of sample is burned in a tube furnace at a minimum
combustion tube operating temperature of 1350 °C in a stream
2. Referenced Documents
of oxygen. During combustion at temperatures above 1350 °C,
2
2.1 ASTM Standards:
the sulfur and sulfur compounds contained in the sample are
D346/D346M Practice for Collection and Preparation of
decomposed and oxidized almost exclusively to gaseous sulfur
Coke Samples for Laboratory Analysis
dioxide, SO . Moisture and particulates are removed from the
2
gas by filters. The gas stream is passed through a cell in which
sulfur dioxide is measured by an infrared (IR) absorption
1
This test method is under the jurisdiction of ASTM Committee D05 on Coal
detector. Sulfur dioxide absorbs IR energy at a precise wave-
and Coke and is the direct responsibility of Subcommittee D05.21 on Methods of
Analysis. length within the IR spectrum. Energy is absorbed as the gas
Current edition approved Sept. 1, 2018. Published October 2018. Originally
passes through the cell body in which the IR energy is being
approved in 1983. Last previous edition approved in 2017 as D4239 – 17. DOI:
10.1520/D4239-18E01.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Organization for Standardization (ISO), 1, ch. de
Standards volume information, refer to the standard’s Document Summary page on la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http://
the ASTM website. www.iso.ch.
*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 ----------------------
´1
D4239 − 18
transmitted: thus, at the detector, less energy is received. All 4.2 Results of the sulf
...

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1.1 This standard covers the classification of coals by rank, that is, according to their degree of metamorphism, or progressive alteration, in the natural series from lignite to anthracite.  
1.2 This classification is applicable to coals that are composed mainly of vitrinite.  
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SIGNIFICANCE AND USE
5.1 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.  
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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.  
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5.1 A compositional analysis of ash is used in describing the quality of coal for its complete characterization. Ash composition is useful in predicting slagging and fouling characteristics of combusted materials as well as the potential utilization of ash by-products.  
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1.2 Units—The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard.  
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Standard Test Method for Apparent and True Specific Gravity and Porosity of Lump Coke

SIGNIFICANCE AND USE
4.1 Apparent and true specific gravity, as determined by this test method, are influenced by the type of coals carbonized and the operating and preparational conditions of that carbonization, that is, charge bulk density, heating rate, and pulverization level. In turn, these properties directly influence the performance in processes using coke.
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1.1 This test method covers the determination of apparent specific gravity (Sections 5 to 9) and true specific gravity (Sections 10 to 14) of lump coke larger than 25 mm [1 in.] size and calculating porosity (Section 15) from the specific gravity data.  
1.2 Units—The values stated in either SI units or non-SI 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.  
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ASTM D6796-21e1(Practice)
Standard Practice for Production of Coal, Coke and Coal Combustion Samples for Interlaboratory Studies

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5.1 The objective of this practice is to provide guidelines for the preparation of samples for interlaboratory studies to evaluate new test methods or for quality control purposes.  
5.2 Samples prepared using these guidelines may be used for the testing of the precision and bias mandatory for ASTM test methods. Such an evaluation is necessary to provide guidance to the user as to the reliability of measurements that can be expected by its use. The statements are developed on the basis of user experience (ordinarily through interlaboratory studies) with the test method.  
5.3 The availability of appropriate samples is a key requirement for interlaboratory studies.  
5.4 The homogeneity of the sample produced for interlaboratory studies must be small enough so that the variance caused by the sample is small compared to the variance of the test being performed.
SCOPE
1.1 This practice describes the essential activities that are required to produce samples for interlaboratory studies.  
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1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
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.  
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