Standard Practice of Preparing Coal Samples for Analysis

SCOPE
1.1 This practice covers the reduction and division of gross or divided samples, and the preparation of composite samples, up to and including the individual portions for laboratory analysis.
1.2 Reduction and division procedures are prescribed for coals of the following groups:
1.2.1 Group Aincludes coals that have been cleaned in all sizes.
1.2.2 Group Bincludes all other coals. Unknown coals are to be considered under Group B.
1.2.3 Group A allows smaller weight laboratory samples to be retained than Group B. These lower weights may be used for particular coals if they have been shown, by using the procedures of Annex A1.2, to give a sample preparation and analysis variance which is no more than 20 % of the total analysis variance.
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 standard. The values given in parentheses are provided for information purposes only.

General Information

Status
Historical
Publication Date
30-Nov-2003
Technical Committee
Drafting Committee
Current Stage
Ref Project

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D2013–03
Standard Practice for
1
Preparing Coal Samples for Analysis
This standard is issued under the fixed designation D 2013; 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 D 3174 TestMethodforAshintheAnalysisSampleofCoal
2 and Coke from Coal
1.1 This practice covers the reduction and division of gross
D 3302 Test Method for Total Moisture in Coal
or divided samples, and the preparation of composite samples,
D 4749 Test Method for Performing the Sieve Analysis of
up to and including the individual portions for laboratory
Coal and Designating Coal Size
analysis.
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
1.2 Reduction and division procedures are prescribed for
poses
coals of the following groups:
E 177 Practice for Use of the Terms Precision and Bias in
1.2.1 Group A includes coals that have been cleaned in all
ASTM Test Methods
sizes.
E 456 Terminology Relating to Quality and Statistics
1.2.2 Group B includes all other coals. Unknown coals are
to be considered under Group B.
3. Terminology
1.2.3 Group A allows smaller weight laboratory samples to
3.1 Definitions of Terms Specific to This Standard—No
beretainedthanGroupB.Theselowerweightsmaybeusedfor
terms are used which are specific to this practice. Many terms
particular coals if they have been shown, by using the
used in this practice may be found inTerminologies D 121 and
procedures of Annex A1.2, to give a sample preparation and
E 456 and in Practice E 177.
analysis variance which is no more than 20 % of the total
analysis variance.
4. Summary of Practice
1.3 This standard does not purport to address all of the
4.1 Three processes of sample division and reduction are
safety concerns, if any, associated with its use. It is the
covered as follows:
responsibility of the user of this standard to establish appro-
4.1.1 Procedure A—Manual riffles are used for division of
priate safety and health practices and determine the applica-
the sample and mechanical crushing equipment for the reduc-
bility of regulatory limitations prior to use.
tion of the sample.
1.4 The values stated in SI units are to be regarded as
4.1.2 Procedure B—Mechanical sample dividers are used
standard. The values given in parentheses are provided for
for the division of the sample and mechanical crushing
information purposes only.
equipment for the reduction of the sample.
4.1.3 Combined Procedure A and B—The two procedures
2. Referenced Documents
3 may be combined at any stage.
2.1 ASTM Standards:
D 121 Terminology of Coal and Coke
5. Significance and Use
D 197 Test Method for Sampling and Fineness Test of
5.1 Other standards are used to collect the gross sample:
Pulverized Coal
Practice D 2234 allows for one division of the gross sample
D 2234 Practice for Collection of a Gross Sample of Coal
before crushing. The mass and top size of the gross or divided
sample collected by using these guides and practices are
1
This practice is under the jurisdiction of ASTM Committee D05 on Coal and usually too large for chemical or physical testing. Practice
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
D 2013 provide instructions for reducing and dividing the
Current edition approved Dec. 1, 2003. Published January 2004. Originally
gross or divided sample, by on-line or off-line processes, or
approved in 1962. Last previous edition approved in 2001 as D 2013 – 01.
2
both, to a top size and mass suitable to the performance of
For more detailed explanation of this practice see Keller, G. E., “Determination
of Quantities Needed in Coal Sample Preparation and Analysis,” Transactions,Vol
testing. Any bias in the gross or divided sample before
232, 1965, pp. 218-226.
adherence to this practice will remain in the final sample
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
resulting from use of this practice. Therefore, carefully select
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
the standard to be used to collect the gross sample.
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

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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.
D2013–03
5.2 Division and reduction of a sample may occur at more 6.2.2.2 Feed Chute—Afeed chute shall be used as show
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