ASTM D3174 - 12

    Standard Test Method for Ash in the Analysis Sample of Coal and Coke from Coal

    Active Standard ASTM D3174 | Developed by Subcommittee: D05.21

    Book of Standards Volume: 05.06


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    Significance and Use

    5.1 Ash, as determined by this test method, is the residue remaining after burning the coal and coke. Ash obtained differs in composition from the inorganic constituents present in the original coal. Incineration causes an expulsion of all water, the loss of carbon dioxide from carbonates, the conversion of iron pyrites into ferric oxide, and other chemical reactions. Ash, as determined by this test method, will differ in amount from ash produced in furnace operations and other firing systems because incineration conditions influence the chemistry and amount of the ash. References for correcting ash results determined by this test method to a mineral-matter-free basis are listed in Classification D388, Section 9.

    1. Scope

    1.1 This test method covers the determination of the inorganic residue as ash in the analysis sample of coal or coke as prepared in accordance with Practice D2013 or Practice D346. The results obtained can be applied as the ash in the proximate analysis, Practice D3172, and in the ultimate analysis, Practice D3176. For the determination of the constituents in ash, reference is made to Test Methods D3682, D4326 and D6349. Test Method D6357 should be used to prepare ash to be used for trace element analysis. See Terminology D121 for definition of ash.

    1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D121 Terminology of Coal and Coke

    D346 Practice for Collection and Preparation of Coke Samples for Laboratory Analysis

    D388 Classification of Coals by Rank

    D1757 Test Method for Sulfate Sulfur in Ash from Coal and Coke

    D2013 Practice for Preparing Coal Samples for Analysis

    D2795 Test Methods for Analysis of Coal and Coke Ash

    D3172 Practice for Proximate Analysis of Coal and Coke

    D3173 Test Method for Moisture in the Analysis Sample of Coal and Coke

    D3176 Practice for Ultimate Analysis of Coal and Coke

    D3180 Practice for Calculating Coal and Coke Analyses from As-Determined to Different Bases

    D3682 Test Method for Major and Minor Elements in Combustion Residues from Coal Utilization Processes

    D4326 Test Method for Major and Minor Elements in Coal and Coke Ash By X-Ray Fluorescence

    D5016 Test Method for Total Sulfur in Coal and Coke Combustion Residues Using a High-Temperature Tube Furnace Combustion Method with Infrared Absorption

    D6349 Test Method for Determination of Major and Minor Elements in Coal, Coke, and Solid Residues from Combustion of Coal and Coke by Inductively Coupled Plasma--Atomic Emission Spectrometry

    D6357 Test Methods for Determination of Trace Elements in Coal, Coke, and Combustion Residues from Coal Utilization Processes by Inductively Coupled Plasma Atomic Emission Spectrometry, Inductively Coupled Plasma Mass Spectrometry, and Graphite Furnace Atomic Ab

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    ICS Code

    ICS Number Code 75.160.10 (Solid fuels)

    UNSPSC Code

    UNSPSC Code 15101601(Coal); 15101604(Coke)


    DOI: 10.1520/D3174-12

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