ASTM D3682-00
(Test Method)Standard Test Method for Major and Minor Elements in Combustion Residues from Coal Utilization Processes
Standard Test Method for Major and Minor Elements in Combustion Residues from Coal Utilization Processes
SCOPE
1.1 This test method covers the analysis of the commonly determined major and minor elements in combustion residues from coal utilization processes.
Note 1--Test Methods D1757 or D5016 shall be used for determination of sulfur.
Note 1 -- Test Methods D1757 or D5016 shall be used for determination of sulfur.
1.2 The values stated in SI units (IEEE/ASTM SI 10) shall to be regarded as the standard.
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.
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Designation: D 3682 – 00
Standard Test Method for
Major and Minor Elements in Combustion Residues from
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Coal Utilization Processes
This standard is issued under the fixed designation D 3682; 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 (ε) indicates an editorial change since the last revision or reapproval.
1. Scope E 691 Practice for Conducting an Interlaboratory Study to
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Determine the Precision of a Test Method
1.1 This test method covers the analysis of the commonly
IEEE/ASTM SI 10 Standard for Use of the International
determined major and minor elements in combustion residues
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System of Units (SI): The Modern Metric System
from coal utilization processes.
3. Summary of Test Method
NOTE 1—Test Methods D 1757 or D 5016 shall be used for determina-
tion of sulfur.
3.1 The combustion residue to be analyzed is ignited in air
at 750°C to a constant weight. The ash is fused within lithium
1.2 The values stated in SI units (Practice E 380) shall to be
tetraborate (Li B O ) followed by a final dissolution of the
regarded as the standard.
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melt in either dilute hydrochloric acid (HCl) or dilute nitric
1.3 This standard does not purport to address all of the
acid (HNO ). The solution is analyzed by atomic absorption/
safety concerns, if any, associated with its use. It is the
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emission for applicable elements.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4. Significance and Use
bility of regulatory limitations prior to use.
4.1 A compositional analysis of the ash in coal is often
2. Referenced Documents
useful in the total description of the quality of the coal.
Knowledge of ash composition is also useful in predicting the
2.1 ASTM Standards:
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behavior of ashes and slags in combustion chambers. Utiliza-
D 1193 Specification for Reagent Water
tion of the ash by-products of coal combustion sometimes
D 1757 Test Method for Sulfate Sulfur in Ash from Coal
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depends on the chemical composition of the ash.
and Coke
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4.2 Note that the chemical composition of laboratory-
D 2013 Method of Preparing Coal Samples for Analysis
prepared coal ash may not exactly represent the composition of
D 3173 Test Method for Moisture in theAnalysis Sample of
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mineralmatterinthecoalorthecompositionofflyashandslag
Coal and Coke
resulting from commercial-scale burning of the coal.
D 3174 TestMethodforAshintheAnalysisSampleofCoal
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and Coke from Coal
5. Apparatus
D 3180 Practice for Calculating Coal and Coke Analyses
3 5.1 Ashing Furnace, with an adequate air circulation and
from As-Determined to Different Bases
capable of having its temperature regulated between 700 and
D 5016 TestMethodforSulfurinAshfromCoal,Coke,and
750°C.
Residues from Coal Combustion Using High-Temperature
5.2 Fusion Furnace, with an operating temperature of
Tube Furnace Combustion Method with Infrared Absorp-
3 1000°C.
tion
5.3 Platinum Dish, 35- to 85-mL capacity.
D 5142 Test Methods for Proximate Analysis of the Analy-
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5.4 Stirring Hotplate and Bars, operating temperature of
sis Sample of Coal and Coke by Instrumental Procedures
200°C.
5.5 AtomicAbsorption Spectrometer—Any dual-channel in-
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This test method is under the jurisdiction of ASTM Committee D05 on Coal
strument using a deuterium (D ) arc background corrector or
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and Coke and is the direct responsibility of Subcommittee D 05.29 on Major
other comparable simultaneous background correction system.
Elements in Ash and Trace Elements of Coal.
Current edition approved Oct. 10, 2000. Published January 2001. Originally
published as D 3682 – 78. Last previous edition D 3682 – 96.
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Annual Book of ASTM Standards, Vol 11.01.
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Annual Book of ASTM Standards, Vol 05.06. Annual Book of ASTM Standards, Vol 14.04.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D3682–00
6. Reagents 7.2 If the ash is to be prepared from a coal, prepare the coal
analysis sample in accordance with Method D 2013 by pulver-
6.1 Purity of Reagents—Reagent grade chemicals shall be
izing the materials to pass a 250-µm (No. 60) sieve.
used in all tests. It is intended that all reagents shall conform to
7.2.1 Analyze separate test portions of the coal for moisture
the specifications of the Committee on Analytical Reagents of
and ash contents in accordance with Test Methods D 3173,
the American Chemical Society, where such specifications are
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D 3174, or D 5142 so that calculations to other bases can be
available. Other grades may be used, provided it is first
made.
ascertained that the reagent
...
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