简介：

简介：

简介：1ScopeThisstandardspecifiestheclassification,technicalrequirements,testmethods,qualityappraisalprocedure,packing,marking,transportation,storageand

简介：Functionalrefractories,includingsubmergedentrynozzle(SEN),ladleshroudandmonolithicstopper,arethekeyrefractoriesforcontinuouscasting.Drivenbythedemandofhigh-speedcontinuouscasting,traditionalfunctionalrefractoriesfailtomeettheneedsoflongspanlife,andhighperformancefunctionalrefractoriesforcontinuouscastingareincreasinglyrequired.Throughstructureandmaterialdesign,theperformanceoffunctionalrefractoriesissignificantlyimproved.Inthispaper,someresearchadvancesonfunctionalrefractoriesforcontinuouscastingwerementioned.Throughnumericalmodelingandhotsimulation,theservicelifeofnon-preheatingladleshroudwasincreasedfrom8htomorethan12h.Throughthewatermodeling,theflowpatternsinthemoldweresignificantlyimprovedandthroughhotsimulationandmaterialdesign,theservicelifeandreliabilityofSENwerealsosignificantlyimproved.

简介：Microstructuresofmatrixesofaseriesofhightechnologycastableshavebeenanalyzed.Intheselowcement,ultra-lowcementandnon-cementcastablematrixes,whichweresinteredrespectivelyat1350℃and1500℃，silicaulrtafineandα-Al2O3ultrafinewereadded,Theresultsshowthatthenon-cementcastablehadthebestpropertiesathightemerature;addingα-Al2O3ultrafinewashelpfultocalcium-feldspardeveopingandgrowing;andhighlypurifiedsilicaultrafinestiumulatedmullitecrystaldevelopingwhilethecommononestimulateditsgrowing.

简介：ThechemicalcompositionandmicrostructureofTibetanmicrocrystallinemagnesitewerestudiedbymeansofXRF,XRDandFESEM.Itisfoundthatthemicrocrystallinemagnesitehasuniformlydistributedgrains,mostlyintherangeof2-4μm,andtheMgOcontentis47.80%.Infusedmagnesia,thedrusesarecolorlesstransparentpericlasemegacrystswithoutimpurity,whilethecrustsandiswhite,withahighMgOcontentupto97%-99%.Thepericlasecrystalsarebig,appearingasfacedandstep-growthmorphology.Massivesecondarylongcolumnarpericlaseiscrystallized.

简介：Mullite-corundumbricksandkilnfurni-turewithhighcreepresistanceandgoodthermalshockresistancewerefabricatedbasedonlowcostrawmaterials,theapproachesofintroducingsomeadditivesandoptimisig,chemicalcompositionandparticalsizeweremployedtoproduceahightemperaturematrixphasewithhighcreepresistanceandgoodthermalshockresistance.

简介：Wearofthespenthighchromebrickinslagginggasifierwasstudied.TheresultshowsthaterosionandspallingarethemainwearmechanismofhighchromebrickandtheCaOcontentofcoalslagiscrucialtowearofhighchromebrick.

简介：Thepotentialapplicationsofsomehightenologiesinrefractories,suchas,nanotechnology,in-situsynthesis,self-propagatinghigh-temperaturesynthesis,functionalgradientmaterials,computerassisteddesignandsomenewadvancedrefactoriesinSi-Al-O-Nsystemarebrieflydescribed.Thecharacteristicsandpreparationprocessesofthesenewrefractoriesareintroduced,andtheremainingproblemsawaitingeffectivesolutionsarepointedout.Somesuggesionsonfuturediectionofresearchanddevelopmentarefitlymade.

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简介：

简介：Inordertoovercomecastables'innateimperfectionfrombondphase,wereferaso-called"self-bonded"phasetomullitecastableusingsilicasolwiththehelpofsuperfinepowderasthebindrforfullyexertingthemeritoftheperfectintegralityofcastable,There-searchworkdemonstratesthatcomparingwithlow-cementcastable,thiskindof"self-bonded"mullitecastableischarterizebyhavingperfectintegralityofstructureinthewholescopeoftesttemperature,beingverydense,andexcellentinvolumestability,itsporositychangingverylittleandsmoothly,thecoldandhotstrengthesbeinghighandstable,hightemperaturecompressivecreeplittle.Thisisaverypromisingcastablestructuralrefrctory.

简介：JC/T616-20031ScopeThisstandardspecifiestheclassification,technicalrequirements,testmethod,inspectionrules,marking,packing,transportation,storageandqualitycertificationofhighqualitysilicabricksforglassmeltingfurnace.Thisstandardisapplicabletothepressedhighqualitysilicabrickswithunitweight≥40kgforglassmeltingfurnace.

简介：Thedevelopmentandapplicationofdomesticspinelandhigh-alumian/spinel(includingcorun-dum/spinelandcalcined-bauxite/spinel)castablesweredisucssedinthispaper,Itexpoundedthetech-nicalcharactersandvirtuesofhighgradeandmedi-umgradespinelandtheimportanceofthedevelop-metandsuccessfulapplicationofcalcined-bauxite/spinelcastalbes.Becauseofthetechnicalandeco-nomicalfeasibility,thedevelopementandapplicationofspinelandhigh-alumina/spinelcastables,inwhichdomesticrefractoryworkersplayanimportantrole,havebeenflurishing.

简介：Ascokeovenbecominglarger,silicabrickforcokeovenisrequiredtobeofhighuqality,LuoyangRefractories(Grop)Co.Ltd.(LRCO)hasre-searchedthemineralizerwhichcontainsCa^2+,R^+,Al^3+,F^-,emphaticallyandproposedtheprincipleofcompositemineralizerbasdonthepropertiesofrawmaterialsused.Highperformancesiliabrickwhichischaracterizedbylowthermalexpansionrate,goodhightemperatureproperties,residualquartz<0.5%,truedensity2.31,andhighbulkdensitysilicabrickforcarbonizationroomwithapparentporosity13%,bulkdensityl.96g/cm^3havebeendevelopedandproducedsuccessfullybyLR-CO.Thequalityofthebrickshasreachedtheinter-nationaladvencedlevel.

简介：1ScopeThisstandardspecifiesthesort,technicalrequirement,testmethod,inspectionrules,marking,packing,transportation,storageandqualitycertificationofhighaluminarefractorybricksforelectricarcfurnaceroofs.

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简介：Acolloidalsilicasolbondedproductrangeisintroducedbyanexampletargetinghightemperatureapplicationsinsteelmaking.Placementandsettingcharacteristicsareshown.Thethermalmechanicalpropertiesandresultingadvantagesarepresentedaswellastheperformanceenhancementincorrosionresistance.PropertiesarecomparedtoacommonULCCproduct.Resultsoftheindustrialtrialphasearediscussed.

简介：Itisexpectedthatinthenewcentury,tocopewithdevelopmentsofnewhightemperaturetechnologies,anewgenerationofhighperformancerefractoryceramicswillemergeandflourishwhichshouldincludethefollowing(1)oxideandnonoxidecompositescharacterizedbyauniquecombinationofhighhotstrength,highthermalshockresistanceandhighcorrosionresistance;(2)freeCaObearingbasicrefractoriescapableofpurifyingmoltenmetalforimprovingcleanlinessandofabsorbingcontaminantsfromwastegasesforreducingenvironmentalpollution;(3)freeflowingzerocementcastableswithimprovedthermomechanicalproperties,thermalshockresistanceandcorrosionresistanceandgradientcastableswithvaryingmatrixcompositionandvaryingtexture.

简介：SeveralkindsofslidenozzleplatesuchasAl2O3-C-ZrO2,MgO,Al2O3,Spinel-CandAl2O3-CSNplateforhighoxygensteelusedinBaoSteelhavebeenanalysed,theappearanceandsizeoftheSNplateafterusinghavebeenmeasured.TheAl2O3-CSNplatehaslongerservicelifeincastinghighoxygensteel,andthewearmechanismofdifferentSNplatesisdiscussed.