【英文标准名称】:StandardTestMethodforEquilibriumMoistureofCoalat96to97PercentRelativeHumidityand30176;C
【原文标准名称】:96%-97%相对湿度和30°C时煤的平衡湿气的标准试验方法
【标准号】:ASTMD1412-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D05.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:煤;平衡;燃料;湿度;潮气;固体燃料;测试
【英文主题词】:bedmoisture;coal;equilibriummoisture;extraneousmoisture;surfacemoisture
【摘要】:Thistestmethodaffordsameansofestimatingthebedmoistureofeithercoalthatiswetandshowsvisiblesurfacemoistureorcoalthatmayhavelostsomemoisture.Itmaybeusedforestimatingthesurface,orextraneousmoistureofwetcoal,suchmoisturebeingthedifferencebetweenthetotalmoistureasdeterminedbyTestMethodD3302andtheequilibriummoisture.WhensamplesarecollectedinconformitywithClassificationD388,theequilibriummoistureisconsideredtobeequaltobedmoisturewiththeexceptionofsomelowrankcoalsthatyieldequilibriummoisturevaluesbelowbedmoisture.3.3Theresultsobtainedbythistestmethodaresensitivetomanyinfluences,andtherefore,raw(uncorrected)equilibriummoisturedatamaybeoflimitedvalueinandofthemselves.Whenworkingwithlowrankcoals,theresultsyieldedbythistestmethodrequirecriticalassessments.ItisrecommendedthattheprocedureoutlinedintheAppendixX1beapplied,andtheresultscorrectedbeforeuseinsituationswhereamorereliableestimationinherentorbedmoistureforlowrankcoalsisrequired.TheAppendixalsoprovidesusefulqualityassuranceinformationwhichisapplicabletocoalsofallranks.1.1Thistestmethodcoversdeterminationoftheequilibriummoistureofcoalinanatmosphereoverasaturatedsolutionofpotassiumsulfateat30C.Note1Forinformationconcerningtheexperimentalworkonwhichthistestmethodisbased,see().1.2si-value;Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:D21
【国际标准分类号】:73_040
【页数】:5P.;A4
【正文语种】: