ASTM D2013-04
(Practice)Standard Practice of Preparing Coal Samples for Analysis
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
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D2013–04
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 3302 Test Method for Total Moisture in Coal
2 D 4749 Test Method for Performing the Sieve Analysis of
1.1 This practice covers the reduction and division of gross
Coal and Designating Coal Size
or divided samples, and the preparation of composite samples,
E 11 Specification for Wire-Cloth Sieves for Testing Pur-
up to and including the individual portions for laboratory
poses
analysis.
E 177 Practice for Use of the Terms Precision and Bias in
1.2 Reduction and division procedures are prescribed for
ASTM Test Methods
coals of the following groups:
E 456 Terminology Relating to Quality and Statistics
1.2.1 Group A includes coals that have been cleaned in all
sizes.
3. Terminology
1.2.2 Group B includes all other coals. Unknown coals are
3.1 Definitions of Terms Specific to This Standard—No
to be considered under Group B.
terms are used which are specific to this practice. Many terms
1.2.3 Group A allows smaller weight laboratory samples to
used in this practice may be found inTerminologies D 121 and
beretainedthanGroupB.Theselowerweightsmaybeusedfor
E 456 and in Practice E 177.
particular coals if they have been shown, by using the
procedures of Annex A1.2, to give a sample preparation and
4. Summary of Practice
analysis variance which is no more than 20 % of the total
4.1 Three processes of sample division and reduction are
analysis variance.
covered as follows:
1.3 This standard does not purport to address all of the
4.1.1 Procedure A—Manual riffles are used for division of
safety concerns, if any, associated with its use. It is the
the sample and mechanical crushing equipment for the reduc-
responsibility of the user of this standard to establish appro-
tion of the sample.
priate safety and health practices and determine the applica-
4.1.2 Procedure B—Mechanical sample dividers are used
bility of regulatory limitations prior to use.
for the division of the sample and mechanical crushing
1.4 The values stated in SI units are to be regarded as
equipment for the reduction of the sample.
standard. The values given in parentheses are provided for
4.1.3 Combined Procedure A and B—The two procedures
information purposes only.
may be combined at any stage.
2. Referenced Documents
5. Significance and Use
3
2.1 ASTM Standards:
5.1 Other standards are used to collect the gross sample:
D 121 Terminology of Coal and Coke
Practice D 2234/D 2234 M allows for one division of the gross
D 2234/D 2234 M Practice for Collection of a Gross
sample before crushing. The mass and top size of the gross or
Sample of Coal
divided sample collected by using these guides and practices
D 3174 TestMethodforAshintheAnalysisSampleofCoal
are usually too large for chemical or physical testing. Practice
and Coke from Coal
D 2013 provide instructions for reducing and dividing the
gross or divided sample, by on-line or off-line processes, or
1
both, to a top size and mass suitable to the performance of
This practice is under the jurisdiction of ASTM Committee D05 on Coal and
Coke and is the direct responsibility of Subcommittee D05.23 on Sampling.
testing. Any bias in the gross or divided sample before
Current edition approved Nov. 1, 2004. Published November 2004. Originally
adherence to this practice will remain in the final sample
approved in 1962. Last previous edition approved in 2001 as D 2013 – 03.
2
resulting from use of this practice. Therefore, carefully select
For more detailed explanation of this practice see Keller, G. E., “Determination
of Quantities Needed in Coal Sample Preparation and Analysis,” Transactions,Vol the standard to be used to collect the gross sample.
232, 1965, pp. 218-226.
5.2 Division and reduction of a sample may occur at more
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
than one location. Most often, the sample is collected, reduced,
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
and divided (one or more times) by use of a mechanical
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
---------------------- Page: 1 ----------------------
D2013–04
sampling system. The remaining sample may be further di- 6.3 Mixing Wheel—One type of a mechanical device used
videdon-sitetofacilitatetransporting
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.