1、Designation:D 5142 02aStandard Test Methods forProximate Analysis of the Analysis Sample of Coal andCoke by Instrumental Procedures1This standard is issued under the fixed designation D 5142;the number immediately following the designation indicates the year oforiginal adoption or,in the case of rev
2、ision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 These instrumental test methods cover the determinationof moisture,volatile matter,and ash,and the calcu
3、lation offixed carbon in the analysis of coal and coke samples preparedin accordance with Method D 2013 and Practice D 346.Re-sults obtained through the use of the instrumental tests havebeen shown to differ from those obtained with Test MethodsD 3173,D 3174,and D 3175 on some coals and cokes.Wherea
4、 relative bias between the instrumental methods and TestMethods D 3173,D 3174,and D 3175 for proximate analysisof coal and coke are shown to exist,the instrumental resultsshall be corrected or the instrument calibrated using samples ofknown proximate analysis.Test Methods D 3173,D 3174,andD 3175 sha
5、ll be considered the referee test methods.Theinstrumental test methods are not applicable to thermogravi-metric analyzers using microgram size samples.1.2 The moisture value determined is used for calculatingother analytical results to a dry basis.When used in conjunc-tion with the air dry loss mois
6、ture,as determined in accordancewith Method D 2013,Test Method D 3302,or Practice D 346,the calculated total moisture can be used to convert dry basisanalytical results to the as-received basis.1.3 The result of the ash determinations can be applied inthe ultimate analysis,Practice D 3176.1.4 This s
7、tandard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 AS
8、TM Standards:D 121 Terminology of Coal and Coke2D 346 Practice for Collection and Preparation of CokeSamples for Laboratory Analysis2D 1757 Test Method for Sulfate Sulfur in Ash from Coaland Coke2D 2013 Practice for Preparing Coal Samples for Analysis2D 3173 Test Method for Moisture in theAnalysis S
9、ample ofCoal and Coke2D 3174 Test Method forAsh in theAnalysis Sample of Coaland Coke from Coal2D 3175 Test Method for Volatile Matter in the AnalysisSample of Coal and Coke2D 3176 Practice for Ultimate Analysis of Coal and Coke2D 3180 Practice for Calculating Coal and Coke Analysesfrom As-Determine
10、d to Different Bases2D 3302 Test Method for Total Moisture in Coal23.Terminology3.1 For definitions of terms used in this test method,refer toTerminology D 121.4.Summary of Test Methods4.1 Moisture is determined by establishing the loss in massof the analysis specimen of coal or coke when heated und
11、errigidly controlled conditions of temperature,time,atmosphere,specimen mass,and equipment specifications.4.2 Volatile matter is determined by measuring the loss inmass of the moist or dried analysis specimen of coal or cokewhen heated under rigidly controlled conditions.If appropriate,the measured
12、mass loss establishes the volatile matter aftercorrecting for the moisture content.4.3 Ash is determined by measuring the mass of the residueremaining after burning the coal or coke specimen underrigidly controlled conditions of specimen mass,temperature,time,atmosphere,and equipment specifications.
13、4.4 In these test methods,moisture,volatile matter,and ashmay be determined sequentially in a single instrumentalprocedure.With some systems,the procedure consists ofsimply placing a specimen in the microprocessor-controlledinstrument and initiating the automatic process of analyzing thespecimen.4.5
14、 In other systems,the analytical process is manuallycontrolled,although the instruments may have microprocessorsto assist in controlling conditions of the instrument and forcalculations.The actual analytical process can vary from1These test methods are under the jurisdiction ofASTM Committee D05 on
15、Coaland Coke and are the direct responsibility of Subcommittee D05.21 on Methods ofAnalysis.Current edition approved Oct.10,2002.Published January 2003.Orginally approved in 1990.Last previous edition approved in 1998 asD 514290(1998).2Annual Book of ASTM Standards,Vol 05.06.1Copyright ASTM Internat
16、ional,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.instrument to instrument,but the overall process shall providefor the determination of moisture,volatile matter,and ash asspecified in 4.1,4.2,and 4.3.4.6 Different procedures are described to permit conformitywith differences in instrument design and for differences insample behavior.4.7 Where a relative bias between these test methods andother ASTM test methods for the proximate analysis of coaland coke has b