ISO 11412-1998 Carbonaceous materials for the production of aluminium - Calcined coke - Determination of water content《铝生产用碳素材料 煅烧焦 水分测定》.pdf

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1、A Numroderfrence ISO11412:1998 (F) NORME INTERNATIONALE ISO 11412 Premiredition 19980715 Produitscarbonsutilisspourla productiondelaluminiumCoke calcinDosagedeleau CarbonaceousmaterialsfortheproductionofaluminiumCalcined cokeDeterminationofwatercontentISO11412:1998(F) ISO1998 Droitsdereproductionrse

2、rvs.Saufprescriptiondiffrente,aucunepartiedecettepubli cationnepeuttrereproduiteniutilisesousquelqueformequecesoitetparaucunpro cd,lectroniqueoumcanique,ycomprislaphotocopieetlesmicrofilms,sanslaccord critdelditeur. Organisationinternationaledenormalisation Casepostale56 CH1211Genve20 Suisse Interne

3、t isoiso.ch ImprimenSuisse ii Sommaire Page 1 Domainedapplication 1 2 Rfrencesnormatives. 1 3 Principe 1 4 Appareillage. 1 5 chantillonnageetprparationdelchantillon . 1 6 Modeopratoire. 2 7 Expressiondesrsultats 2 8 Fidlit 2 9 Rapportdessai. 3ISO ISO11412:1998(F) iii Avantpropos LISO(Organisationint

4、ernationaledenormalisation)estunefdration mondialedorganismesnationauxdenormalisation(comitsmembresde lISO).LlaborationdeNormesinternationalesestengnralconfieaux comitstechniquesdelISO.Chaquecomitmembreintressparune tudealedroitdefairepartieducomittechniquecrceteffet.Les organisationsinternationales

5、gouvernementalesetnongouvernemen tales,enliaisonaveclISOparticipentgalementauxtravaux.LISO collaboretroitementaveclaCommissionlectrotechniqueinternationale (CEI)encequiconcernelanormalisationlectrotechnique. LesprojetsdeNormesinternationalesadoptsparlescomitstechniques sontsoumisauxcomitsmembrespou

6、rvote.Leurpublicationcomme Normesinternationalesrequiertlapprobationde75 %aumoinsdes comitsmembresvotants. LaNormeinternationaleISO11412atlaboreparlecomittechnique ISO/TC47,Chimie, souscomit SC7, Oxydedaluminium,cryolithe, fluoruredaluminium,fluoruredesodium,produitscarbonspourlindustrie delaluminiu

7、m .NORMEINTERNATIONALE ISO ISO11412:1998(F) 1 Produitscarbonsutilisspourlaproductionde laluminiumCokecalcinDosagedeleau 1 Domainedapplication LaprsenteNormeinternationaleprescritunemthodepourledosagedeleaucontenuedanslecokecalcinen pourcentageenmassedecarbonegranulaireetfragmentainsiquedematriauxgra

8、phits(matiressolides). LamthodeestfondesurcelledcritedanslanormeDIN51904:1981, PrfungundKohlenstoffmaterialien BestimmungdesWassergehaltesFeststoffe. 2 Rfrencesnormatives Lesnormessuivantescontiennentdesdispositionsqui,parsuitedelarfrencequienestfaite,constituentdes dispositionsvalablespourlaprsente

9、Normeinternationale.Aumomentdelapublication,lesditionsindiques taientenvigueur.Toutenormeestsujettervision,etlespartiesprenantesdesaccordsfondssurlaprsente Normeinternationalesontinvitesrechercherlapossibilitdappliquerlesditionslesplusrcentesdesnormes indiquesciaprs.LesmembresdelaCEIetdelISOpossdent

10、leregistredesNormesinternationalesenvigueur unmomentdonn. ISO57251:1994, Exactitude(justesseetfidlit)desrsultatsetmthodesdemesurePartie1:Principes gnrauxetdfinitions. ISO6375:1980,ProduitscarbonsutilisspourlaproductiondelaluminiumCokespour lectrodes chantillonnage. 3 Principe Uneprisedessaiestchauff

11、e(110 5)C.Lateneureneauestcalculeenpourcentagedeladiffrenceentre lesmassesavantetaprschauffage. 4 Appareillage 4.1 tuvedeschage, mmedtremaintenue(110 5)C. 4.2 Balanceanalytique, prcise0,1g. 4.3 Plateaudeschage, entledaluminium,mesurantapproximativement300mm 500mmetprsentantun bordrelevdenviron30mm.

12、5 chantillonnageetprparationdelchantillon PrleverlchantillonconformmentlISO6375,ensassurantquelchantillonpasseentirementparuntamisde 30mmdouverturedemaille.Conserverlchantillondansunconteneurtanchelairtelquuneboteenferblanc.ISO11412:1998(F) ISO 2 6 Modeopratoire Procderaudosageendouble. Chaufferlepl

13、ateaudeschage(4.3)dansltuve(4.1),rgle(110 5)C,pendant1h 5min.Laisserrefroidir tempratureambiantedansundessiccateuretpeser0,1gprs. Peser500g1000gdchantillonsurleplateaudeschage0,1gprsetscherdansltuve(110 5)C. Pesertouteslesheuresjusqucequedespesessuccessivesrvlentunediffrenceinfrieure0,1g.Avant chaqu

14、epese,laisserrefroidirlaprisedessaipendantapproximativement30minunetempraturede18C 28C. 7 Expressiondesrsultats Calculerlateneureneau w,exprimeenpourcentageenmasse,0,1%prs,laidedelquationsuivante: w mm m = - 12 100 0 o m 0 estlamasse,engrammes,delaprisedessai; m 1 estlamasse,engrammes,duplateaudesch

15、agepluslaprisedessaiavantschage; m 2 estlamasse,engrammes,duplateaudeschagepluslaprisedessaiaprsschage. Exprimerlersultatcommelamoyennearithmtiquedesdeuxdosages. 8 Fidlit Lesdonnessuivantesdoiventtreutilisespourdterminerlafiabilitdesrsultats(voirISO57251): 8.1 Rptabilit Lesrsultatsdedosagesendouble,

16、effectusdanslemmelaboratoire,parlemmeoprateurutilisantlemme appareillagemaisdesmomentsdiffrents,surdesprisesdessaireprsentativesprlevessurlchantillonpour essai,nedoiventpasdiffrerdeplusdesvaleursindiquesdansletableau1. 8.2 Reproductibilit Lesmoyennesdesrsultatsdedosagesendouble,effectusdansdeuxlabor

17、atoiresdiffrents,surdesprises dessaireprsentativesprlevessurlemmechantillonaprsledernierstadedeprparationdelchantillon,ne doiventpasdiffrerdeplusdesvaleursindiquesdansletableau1. Tableau1Rptabilitetreproductibilit Teneureneau % Rptabilit %absolu Reproductibilit %absolu 10 0,6 1,3ISO ISO11412:1998(F)

18、 3 9 Rapportdessai Lerapportdessaidoitcontenirlesinformationssuivantes: a) touslesrenseignementsncessaireslidentificationcompltedelchantillon; b) larfrencelaprsenteNormeinternationale; c) lesrsultats,exprimsconformmentlarticle7; d) ladatedelessai; e) lesdtailsdetoutescaractristiquesinhabituellesrele

19、vesaucoursdudosage; f) lesdtailsdetoutesoprationsnonprvuesdanslaprsenteNormeinternationaleoudanslesNormes internationalesauxquellesilestfaitrfrence,ainsiquetouteoprationconsidrecommefacultative.ISO11412:1998(F) ISO ICS71.100.10 Descripteurs:mtallurgiedextraction,aluminium,lectrode,produitcarbon,coke,essai,dosage,eau. Prixbassur3pages

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