1、Designation:D4749/D4749M87(Reapproved 2019)1Standard Test Method forPerforming the Sieve Analysis of Coal and Designating CoalSize1This standard is issued under the fixed designation D4749/D4749M;the number immediately following the designation indicates theyear of original adoption or,in the case o
2、f revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1NOTEThe designation was e
3、ditorially updated to dual and other editorial changes were made throughout in December2019.1.Scope1.1 This test method covers procedures for determining thesieve analysis of coal and designating the size of coal fromsieve analysis data.Raw as well as prepared(crushed,cleanedor screened)coals can be
4、 tested by this test method.1.2 This test method explains how to designate coal sizesfrom the results of sieve analysis data in order to represent thecondition of the coal as sold.In the case of special mixtures orcoals with noncontinuous ranges of sizes,a sufficiently com-plete sieve analysis must
5、be made to properly describe the sizedistribution.1.3 This test method is not applicable for determining thesieve analysis nor for designating the size of pulverized coal.(See Note 1.)Size fractions down to and including 38 m No.400 U.S.A.Standard Series can be treated by the methodsdiscussed in thi
6、s test method.Methods for handling sizefractions below 38 m No.400 will be developed by thiscommittee.NOTE1For powdered or pulverized coal as is fired into steam boilers,refer to Test Method D197.1.4 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.Th
7、e values stated ineach system are not necessarily exact equivalents;therefore,toensure conformance with the standard,each system shall beused independently of the other,and values from the twosystems shall not be combined.1.5 This standard does not purport to address all of thesafety concerns,if any
8、,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 developed in accor-dance with internationally
9、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 Documents2.1 ASTM Standards:2D197 Test Method for
10、 Sampling and Fineness Test ofPulverized CoalD346 Practice for Collection and Preparation of CokeSamples for Laboratory AnalysisD388 Classification of Coals by RankD2013 Practice for Preparing Coal Samples for AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD3302 Test Method for
11、 Total Moisture in CoalD4371 Test Method for Determining the Washability Char-acteristics of CoalE11 Specification for Woven Wire Test Sieve Cloth and TestSievesE323 Specification for Perforated-Plate Sieves for TestingPurposes2.2 Other Document:3Specification C-80 Commonwealth of Pennsylvania,Depar
12、t-ment of General Services,Bureau of Purchases,Specifi-cation for Coal:Anthracite3.Descriptions of Terms Specific to this Standard3.1 as-mined coalsame as ROM coal(3.8).1This test method is under the jurisdiction of ASTM Committee D05 on Coaland Coke and is the direct responsibility of Subcommittee
13、D05.07 on PhysicalCharacteristics of Coal.Current edition approved Nov.1,2019.Published December 2019.Originallyapproved in 1987.Last previous edition approved in 2012 as D4749 87(2012).DOI:10.1520/D4749_D4749M-87R19E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact AST
14、M Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Commonwealth of Pennsylvania,Dept.of General Services,Bureau of Purchases,414 N.Office Building,Harrisburg,PA 17125.Copyright ASTM
15、 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,
16、Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 3.2 as-shipped or produced coalraw or prepared coal inany state or condition at which it leaves the mine property orloading facility.3.3 bottomsize,nominalthe sieve designating the lowerlimit or bottomsize shall be that sieve of the series given inSection 6 with the largest openings through which passes atotal of less than 15%of the sample.This defined bottomsizeis not to be confused wit
