【英文标准名称】:StandardTestMethodforGrindabilityofCoalbytheHardgrove-MachineMethod
【原文标准名称】:粉碎机法测定煤炭可磨性的标准试验方法
【标准号】:ASTMD409/D409M-2009ae1
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D05.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:grindability;HardgroveGrindabilityIndex;HGI;pulverization;Coalproducts;Grindability;Hardgrovemachinemethod;Sieveanalysis--coal/coke
【摘要】:Thistestmethoddevelopsameasurementofgrindingorpulverizingcharacteristicsthatcanbeusedtoevaluatetheyield,orenergyinput,orboth,requiredinagrindingorpulverizingprocess,whichcanimpactawidevarietyofprocesses,includingcombustion,coke-making,liquefaction,andgasification.1.1Thistestmethodcoversthedeterminationoftherelativegrindabilityoreaseofpulverizationofcoalsincomparisonwithcoalschosenasstandards.Apreparedandsizedsamplereceivesadefiniteamountofgrindingenergyinaminiaturepulverizer,andthesizeconsistofthepulverizedproductisdeterminedbysieving.Theresultantsizeconsistisusedtoproduceanindexrelativetotheeaseofgrinding[HardgroveGrindabilityIndex(HGI)].1.1.1Somecoals,suchassomehigh-volatilebituminous,subbituminous,andlignitecoals,canundergophysicalchangeasthenaturalorseammoistureisreleasedduringhandlingandpreparation.Thischangeisoftensufficienttoalterthegrindabilitycharacteristicsthatwillbereportedwhentestedinthelaboratoryandcouldproducedifferentindicesdependentontheconditionsofdryingandthemoisturelevelofthe1.18x00D7;0.60mm(No.16x00D7;30)(seeTestMethodD4749)materialsusedforthetest.Therefore,therepeatabilityandreproducibilitycitedinthistestmethodmaynotapplyforthesehigh-volatilebituminous,subbituminous,andlignitecoals.1.2ThevaluesstatedineitherSIunitsorinch-poundunitsaretoberegardedseparatelyasstandard.Thevaluesstatedineachsystemmaynotbeexactequivalents;therefore,eachsystemshallbeusedindependentlyoftheother.Combiningvaluesfromthetwosystemsmayresultinnon-conformancewiththestandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:D21
【国际标准分类号】:73_040
【页数】:14P.;A4
【正文语种】:英语


【英文标准名称】:Informationprocessing-Basicmodecontrolproceduresfordatacommunicationsystems
【原文标准名称】:信息处理数据通信系统基本模式控制程序
【标准号】:ISO1745-1975
【标准状态】:现行
【国别】:国际
【发布日期】:1975-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1
【标准类型】:()
【标准水平】:()
【中文主题词】:数据传输;数据传送;控制规程;数据;信息处理;控制字符;传输控制字符;数据处理
【英文主题词】:Controlcharacters;Controlprocedures;Data;Dataprocessing;Datatransfer;Datatransmission;Informationprocessing;Transmissioncontrolcharacters
【摘要】:DefinesmethodofimplementingtheISO/CCITT7-bitcodedcharactersetforinformationinterchange.Alsodescribesformatsoftransmittedmessagesandsupervisory,sequencesaspartoftransmissioncontrolprocedures.AppliestomostdatatransmissionsystemsandconfigurationsusedwithDPsystems.MustbeconsideredinconjunctionwithISO1177and1155.
【中国标准分类号】:L78
【国际标准分类号】:35_200
【页数】:19P;A4
【正文语种】:英语