Designation:D5003−06a(Reapproved2011)StandardTestMethodforHardgroveGrindabilityIndex(HGI)ofPetroleumCoke1ThisstandardisissuedunderthefixeddesignationD5003;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONIntroductionofpetroleumcokeintothecoalmarketinrecentyearshasnecessitatedtheuseofmanyofthetestmethodsforcoalsolikedatawouldbeavailableforcomparisonandblendingpurposes.TestMethodD409doesnotcoverpetroleumcokeinitsscopeanditsstatementsofprecisionandbiasdonotincludepetroleumcoke.Thistestmethodprovidestheproceduresandprecisionandbiasdataforthehardgrovegrindabilityindex(HGI)ofpetroleumcoke.UseofthistestmethodorTestMethodD409producesthesamevalueforthesampleofpetroleumcokebeinganalyzed.1.Scope1.1Thistestmethodcoversthedeterminationofthehard-grovegrindabilityindex(HGI)ofthosepetroleumcokesthatcontainnodedustingadditive.TheprocedureforthistestmethodisthesameasinTestMethodD409.SectionsofthistestmethodcontainthesignificanceanduseoftheHGIofpetroleumcoke,preliminarysamplepreparationprocedures,andprocedureandprecisionandbiasdataspecifictopetroleumcoke.NOTE1—Thesizeconsistency(particlesizedistribution)offluidpetroleumcokeisgenerally100%passinga6.73mm(No.3)sieveandgreaterthan80%passinga2.00mm(No.10)sieve.Muchoffluidcokeswillpassa0.59mm(No.30)sieve.BecauseofthisfinenesstheHGIvalueisrelatedtothecoarserparticlesinfluidcokeandlargesamplesarerequiredtopreparesufficientmaterialofthecorrectparticlesizeforTestMethodD409.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.2.1Exception—Hardgrovegrindabilityindexisunitless.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplic...
