ASTM D6559-2000a(2010) 测定碳阳极和阴极块的热重(TGA)气体反应性的标准试验方法
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【英文标准名称】:StandardTestMethodforDeterminationofThermogravimetric(TGA)AirReactivityofBakedCarbonAnodesandCathodeBlocks
【原文标准名称】:测定碳阳极和阴极块的热重(TGA)气体反应性的标准试验方法
【标准号】:ASTMD6559-2000a(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:D02.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airreactivity;anode;cathodeblock;dusting;Airreactivity;Anodes;Bakedcarbonanodes;Carbonanodes;TGAairreactivity
【摘要】:Theairreactivityratesareusedtoquantifythetendencyofacarbonartifacttoreactwithair.Carbonconsumedbythisunwantedsidereactionisunavailablefortheprimaryreactionsofreducingaluminatotheprimarymetal.Airreactivitydustingrateisusedbysomecompaniestoquantifythetendencyofthecokeaggregateorbindercokeofacarbonartifacttoselectivelyreactwiththesegases.Preferentialattackofthebindercokeorcokeaggregateofacarbonartifactbythesegasescausessomecarbontofalloffordust,makingthecarbonunavailablefortheprimaryreactionofreducingaluminaand,moreimportantly,reducingtheefficiencyofthealuminumreductioncell.Comparisonofairreactivityanddustingratesisusefulinselectingrawmaterialsforthemanufactureofcommercialanodesforspecificsmeltingtechnologiesinthealuminumreductionindustry.Airreactivityratesareusedforevaluatingeffectivenessandbeneficiationprocessesorforresearchpurposes.1.1Thistestmethodcoversthethermogravimetric(TGA)determinationofairreactivityanddustingofshapedcarbonanodesandcathodeblocksusedinthealuminumreductionindustry.Theapparatusselectioncoversasignificantvarietyoftypeswithvariousthermalconditions,samplesizecapability,materialsofconstruction,andproceduresfordeterminingthemasslossandsubsequentrateofreaction.Thistestmethodstandardizesthevariablesofsampledimensions,reactiontemperature,gasvelocityovertheexposedsurfaces,andreactiontimesuchthatresultsobtainedondifferentapparatusesarecorrelatable.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:77_020
【页数】:5P.;A4
【正文语种】:英语
【原文标准名称】:测定碳阳极和阴极块的热重(TGA)气体反应性的标准试验方法
【标准号】:ASTMD6559-2000a(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:D02.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airreactivity;anode;cathodeblock;dusting;Airreactivity;Anodes;Bakedcarbonanodes;Carbonanodes;TGAairreactivity
【摘要】:Theairreactivityratesareusedtoquantifythetendencyofacarbonartifacttoreactwithair.Carbonconsumedbythisunwantedsidereactionisunavailablefortheprimaryreactionsofreducingaluminatotheprimarymetal.Airreactivitydustingrateisusedbysomecompaniestoquantifythetendencyofthecokeaggregateorbindercokeofacarbonartifacttoselectivelyreactwiththesegases.Preferentialattackofthebindercokeorcokeaggregateofacarbonartifactbythesegasescausessomecarbontofalloffordust,makingthecarbonunavailablefortheprimaryreactionofreducingaluminaand,moreimportantly,reducingtheefficiencyofthealuminumreductioncell.Comparisonofairreactivityanddustingratesisusefulinselectingrawmaterialsforthemanufactureofcommercialanodesforspecificsmeltingtechnologiesinthealuminumreductionindustry.Airreactivityratesareusedforevaluatingeffectivenessandbeneficiationprocessesorforresearchpurposes.1.1Thistestmethodcoversthethermogravimetric(TGA)determinationofairreactivityanddustingofshapedcarbonanodesandcathodeblocksusedinthealuminumreductionindustry.Theapparatusselectioncoversasignificantvarietyoftypeswithvariousthermalconditions,samplesizecapability,materialsofconstruction,andproceduresfordeterminingthemasslossandsubsequentrateofreaction.Thistestmethodstandardizesthevariablesofsampledimensions,reactiontemperature,gasvelocityovertheexposedsurfaces,andreactiontimesuchthatresultsobtainedondifferentapparatusesarecorrelatable.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A29
【国际标准分类号】:77_020
【页数】:5P.;A4
【正文语种】:英语
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