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【英文标准名称】:StandardClassificationofCoalsbyRank
【原文标准名称】:煤分级的标准分类
【标准号】:ASTMD388-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D05.18
【标准类型】:(Classification)
【标准水平】:()
【中文主题词】:分类;分类系统;煤;燃料;固体燃料
【英文主题词】:anthracite;bituminous;coal;ignite;rank
【摘要】:Thisclassificationestablishescategoriesofcoalbasedongradationalpropertiesthatdependprincipallyonthedegreeofmetamorphismtowhichthecoalwassubjectedwhileburied.Thesecategoriesindicaterangesofphysicalandchemicalcharacteristicsthatareusefulinmakingbroadestimatesofthebehaviorofcoalinmining,preparation,anduse.1.1Thisstandardcoverstheclassificationofcoalsbyrank,thatis,accordingtotheirdegreeofmetamorphism,orprogressivealteration,inthenaturalseriesfromlignitetoanthracite.1.2Thisclassificationisapplicabletocoalsthatarecomposedmainlyofvitrinite.Note1Coalsrichininertiniteorliptinite(exinite),orboth,cannotbeproperlyclassifiedbecause,inthosemacerals,thepropertiesthatdeterminerank(calorificvalue,volatilematter,andagglomeratingcharacter)differgreatlyfromthoseofvitriniteinthesamecoal.Oftensuchcoalscanberecognizedbymegascopicexamination.InNorthAmerica,thesecoalsaremostlynonbandedvarietiesthatcontainonlyasmallproportionofvitrainandconsistmainlyofattritalmaterials.Thedegreeofmetamorphismofnonbandedandothervitrinite-poorcoalscanbeestimatedbydeterminingtheclassificationpropertiesofisolatedorconcentratedvitrinitefractions,orbydeterminingthereflectanceofthevitrinite(seeTestMethodD2798andAppendixX1ofthisclassification).However,intheuseofthesevitrinite-poorcoals,somepropertiesnormallyassociatedwithrank,suchasrheology,combustibility,hardness,andgrindability(aswellastherankdeterminingproperties)maydiffersubstantiallyfromthoseofvitrinite-richcoalsofthesamedegreeofmetamorphism.Theprecisionoftheclassificationofimpurecoalmaybeimpairedbytheeffectoflargeamountsofmineralmatteronthedeterminationofvolatilematterandcalorificvalue,andontheircalculationtothemineral-matter-freebasis.1.3ThevaluesstatedinBritishthermalunitsperpoundaretoberegardedasthestandard.TheSIequivalentsofBritishthermalunitsperpoundareapproximate.AllothervaluesinSIunitsaretoberegardedasstandard.
【中国标准分类号】:D21
【国际标准分类号】:75_160_10
【页数】:7P.;A4
【正文语种】: