1、Designation:D3302/D3302M22Standard Test Method forTotal Moisture in Coal1This standard is issued under the fixed designation D3302/D3302M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parenthes
2、es indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This test method covers the measurement of the totalmoisture in coal as it exists at the site,at the time,and underthe conditions it is sampled.It is applicab
3、le to coals as mined,processed,shipped,or used in normal commercial pursuits.Itis not applicable to coal-water slurries,sludges,or pulverizedproducts under 0.5 mm-diameter sieve size.It is applicable tocoals of all ranks within the recognized limitations imposed byoxidation and decomposition charact
4、eristics of lower rankcoals.Because of its empirical nature,strict adherence to basicprinciples and permissive procedures are required for validresults(see Appendix X1).This complete standard is availableto producers,sellers,and consumers as a total moisture methodwhen other procedures or modificati
5、ons are not mutuallyagreed on.1.2 Since coal can vary from extremely wet(water-saturated)to completely dry,special emphasis must be placedon the sampling,sample preparation,and the moisture deter-mination itself to ensure total reliability of measurement.Therefore,this standard entails collection of
6、 the gross sample,sample preparation,and the method of determination.1.3 While it is recognized that such a standard may beunwieldy for routine usage in commercial operations,it canprovide a common base for agreement in cases of dispute orarbitration.The complete standard is referred to as the refer
7、eemethod.Embodied in the standard is the commercial methodstarting with the crushed and divided sample when the grosssample is not too wet to crush and divide.See PracticeD2961/D2961M and Test Method D3173 for other moisturemethods.1.4 UnitsThe values stated in either SI units or inch-pound units ar
8、e to be regarded separately as standard.Thevalues stated in each system are not necessarily exact equiva-lents;therefore,to ensure conformance with the standard,eachsystem shall be used independently of the other,and valuesfrom the two systems shall not be combined.1.5 This standard does not purport
9、 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was de
10、veloped in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Docum
11、ents2.1 ASTM Standards:2D121 Terminology of Coal and CokeD388 Classification of Coals by RankD2013 Practice for Preparing Coal Samples for AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD2961/D2961M Practice for Single-Stage Total MoistureLess than 15%in Coal Reduced to 2.36 mm
12、 No.8 SieveTopsizeD3173 Test Method for Moisture in the Analysis Sample ofCoal and CokeD5865 Test Method for Gross Calorific Value of Coal andCokeD7430 Practice for Mechanical Sampling of Coal2.2 ISO Standard:3ISO 13909-4 Hard Coal and Coke-Mechanical Sampling-Part 4:Coal-Preparation of Test Samples
13、3.Terminology3.1 DefinitionsFor additional definitions of terms used inthis test method,refer to Terminology D121.3.2 Definitions of Terms Specific to This Standard:1This test method is under the jurisdiction of ASTM Committee D05 on Coaland Coke and is the direct responsibility of Subcommittee D05.
14、21 on Methods ofAnalysis.Current edition approved Sept.1,2022.Published September 2022.Originallyapproved in 1974.Last previous edition approved in 2019 as D3302/D3302M 19.DOI:10.1520/D3302_D3302M-22.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service a
15、t serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from International Organization for Standardization(ISO),ISOCentral Secretariat,BIBC II,Chemin de Blandonnet 8,CP 401,1214 Vernier,Geneva,Switzerland,http:
16、/www.iso.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.2.1 air drying,na process of partial drying of a coalsample to
