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Significance and Use
5.1 The combustible carbon content of solid residues is used to calculate efficiency of fuel combustion in boiler furnaces and similar combustors.
5.2 Combustible carbon values are also used to determine the residual fuel value of incompletely combusted/reacted coal and coke in other reactors that consume carbonaceous fuels (examples include fluidized bed furnaces and liquefaction, gasification and pyrolysis reactors).
5.3 The combustible carbon content of flyash is an important parameter in the use of flyash as a cement additive.
1.1 This test method covers the determination of total, combustible, and carbonate carbon remaining in the solid byproducts of combustion from boiler furnaces and similar reactors, including ash, flyash, char, slag, and similar materials.
1.2 This test method is intended for the use of industry to determine the performance of boiler furnaces and similar combustion reactors and aid in determining the quality of the solid residue from combustion.
1.3 This test method comprises the use of any of several methods to determine total carbon content combined with any of several methods to determine carbonate carbon, and the calculation, by difference, of the combustible carbon remaining in a sample.
1.4 Alternatively, this test method applies to the determination of total carbon remaining in a material after acidification with strong acid to evolve carbonate carbon. In this case, the combustible carbon is the total carbon measured in the sample after acidification.
1.5 The values stated in SI units are to be regarded as standard. Non-SI units, if provided, are for information only and are contained within parentheses.
1.6 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 to determine the applicability of regulatory limitations prior to use.
1.7 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D121 Terminology of Coal and Coke
D513 Test Methods for Total and Dissolved Carbon Dioxide in Water
D1756 Test Method for Determination as Carbon Dioxide of Carbonate Carbon in Coal
D3178 Test Methods for Carbon and Hydrogen in the Analysis Sample of Coal and Coke
D3180 Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases
D5373 Test Methods for Determination of Carbon, Hydrogen and Nitrogen in Analysis Samples of Coal and Carbon in Analysis Samples of Coal and Coke
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
Other StandardsANSI/ASME Standard, PTC 38-1980 Determining the Concentration of Particulate Matter in A Gas Stream and US EPA Standard CFR 60 Appendix A, Method 17 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
ICS Number Code 75.160.10 (Solid fuels)
UNSPSC Code 15101601(Coal); 15101604(Coke)
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ASTM D6316-17, Standard Test Method for Determination of Total, Combustible and Carbonate Carbon in Solid Residues from Coal and Coke, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top