简介：Theliningofblastfurnacemaybedamagedpartly,sothatgunningrepairisneeded.Thebondingstrengthofboundarysurfacebetweentherepairinglayerandremainedliningofblastfurnacehasbeenstudiedbythermalsimulation.Thefactorsinfluencingthebondingstrengtharetheingredientgunningrepairtemperature,remainedliningconditionandwatercontentofgunningrefractory.Thebondingstrengthdecreaseswiththeincreasesofremainedliningtemperature.

简介：Thermodynamicdatabasesareveryusefultoanalyzethecomplexchemicalreactionshappeninginhightemperaturematerialprocesses.Anaccuratethermodynamicdatabasebasedonphysicallysoundthermodynamicmodelscanprovidethermodynamiccalculationsofusefulphasediagramsandcomprehensivechemicalreactionsrelatedtorefractorycorrosioninsteelmakingprocesses.Inthisstudy,theFactSagethermodynamicdatabase,oneofthemostcomprehensivethermodynamicdatabasesforoxidesystemsamongothercommercialsoftware,isreviewedinparticularforthesteelmakingrefractoryresearch,andseveralapplicationstorefractorycorrosionarepresented.

简介：Dreippingelectrolytesintosilicasol,gellingreactionwilloccur,Theresearchindicates:thisisacomplicatedphysicemistrycourse,whichconsistsofapre-reactionandapolymerizaion,Theformercontrolsthewholecourse,andinwhichelectroniclayersofthesol'sparticlesbe-comemoreandmorethiner,butwithincresingofthesolconcentration,itscontrolforcewillbediminished,tillthefast-coagulation,thegellingcousebecomeso-controlled,Thelatterisanin-finitepolymericchani-reaction.Theresultofgelatinationistoproduceaverybigplymericmolecule-gel,whichinvolvesinallspace,includesallwater,anditsmolecularweightisin-definitebig.Theresearhalsoindicates:thedy-namiccourseofthegellingcouldbedescribedquantitaivelybyanexperienceformula:lgt=-nlgc+B,Allofthecharacteristicvalueshavedefinitephysicalmeaning,Electronicvalueofthecontrary-inosisthebiggestinfluentialfactor,thenaturesofthecontrary-ionsandthenaturesofthesame-electronic-inoshaveafewinfluentialforcesonthecharacteristicvalues,Thetemperatureincreasingmakesthegellingreactionfast.

简介：Theresearchdevelopmentonnewdryvibratingre-fractories,magnesiabasedslagdamandbubblecurtainbarricadeforcontinuouscastingtundishwasintroduced.

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简介：Someoftheprogressmadeinourlaboratoriesincollaborationwithindustryinresearchanddevelopmentworkonhighperformanceoxide-nonoxidecompositesformetallurgicalapplicationshasbeenreviewed.(1)SiAlONbondedcorundumcompositesforblastfurnaceusagehavebeenproducedbyreduction-nitridationsinteringathightemperature,usingbauxiteinsteadofaluminainthematrix.(2)LowcarbonAl2O3-SiAlONslideplatematerialssuccessfullyusedinhighqualitysteelcontinuouscastinghavebeendevelopedinwhichmostorallofthegraphiteinAl2O3-Cbrickisreplacedbybauxite-basedβ-SiAlON.(3)Al/SimetalbondedAl2O3-Cmaterialcharacterizedbylowcarboncontent,lowfiringtemperatureandin-situformationofcarbidesandnitridesathightemperatureduringservicearefoundtopossessveryhighhotstrengthandverygoodthermalshockresistanceandhavealsobeensuccessfullyusedasslideplatesinladlesandtundishesforhighqualitysteelcasting.

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简介：Inthiswork,thefactorsandparametersofatestmethodonabrasionresistanceatelevatedtemperatureswerediscussedandresearched.Firstofall,theprecisiontestsofthetestmethodonabrasionresistanceatelevatedtemperatureswereconductedin8laboratories.Theresultssuchasthestandarddeviationandreproducibilityshowgoodrepeatabilityandreliability.Therelationshipbetweenthestabilityofrefractoryperformanceandthestandarddeviationoftheirwearvaluewasanalyzed.ThentheimpactoftheheattreatmentconditionofunshapedrefractoriesandoxidationofSiCsandasabrasiveonthelostvolumeofthetestedspecimenswasresearched.

简介：Focusingonhighenergyconsumptionofrefractories,ourresearchworksaboutmonolithicrefractorieswereintroduced,suchasbauxite-basedcorundum,microporouslight-weightbauxite-basedclinker,light-weightalumina-richspinel,magnesiamicropowder,fast-dryingrefractorycastablesofblastfurnace,largearealong-lifefast-sinteringflingrefractoriesforconverter,high-strengthlight-weightmullitecastablesforladlepermanentliner,high-strengthandlow-conductivityforsterite-vermiculiteinsulatingboard,basicshotcretingcastablesforladlepermanentliner,magnesiacalciagunningmixforRHrefiningfurnace,andlight-weightcastablesinpetrochemicalindustry.

简介：BasedontherefractoriesresearchofBaosteel,thedemandsforrefractoriesfromthedevelopingsteel-makingtechnologyashighsecurity,highefficiency,energysavingandenvironmentfriendlyareintroduced.

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简介：Toenhancetheservicelifeofmagnesiabasedslagdam,compositeslagdamwasdesignedtobecastwithaluminamagnesiacastablesinslaglineandmagnesiacastablesinmoltensteelzone.Workabilityofthemagnesiacastablesfortheslagdamwasimprovedandasuitablevibrationshapingmethodwasadoptedtocombineitwithaluminamagnesiacastables.Theresultshows:(1)workabilityandsettingperformanceofmagnesiacastablescanbeimprovedtomatchwithaluminamagnesiacastablesbyadjustingsettingretarderandwaterreducingagent,andaddingpropersilicafume;(2)compositeslagdamcanbepreparedwithaluminamagnesiacastablesandtheimprovedmagnesiacastables,whetherbyup-downcompositemethodorright-leftcompositemethod;inordertogetfullvibrationandmakeinterfacefluctuationhaveproperamplitude,thevibrationtimeofthetwomethodsaftertwodifferentcastablescontactwitheachotheris3and2.5minutes,respectively;(3)theresultoftheon-sitetestprovesthatthedesignaimsforreducingpollutiontohotmetalandimprovingcorrosionresistancehavebeenachieved.

简介：ThearticlegivesanintroductiontotheUkrainianResearchInstituteofRefractoriesandespeciallyitsR&Dandrefractoryproductsfortheindustriesofironandsteel,nonferrous,glassandchemistryetc.

简介：Inordertoprolongtheservicelifeofthecoolingzoneoflargescalecokedryquenchingovens,sixkindspossiblerefractoriesforthecoolingzoneoflargescalecokedryquenchingovens:SiCcontainingbrickA,SiCcontainingbrickB,mullite-andalusitebrick,spinelcontainingbrick,zirconiacontainingbrick,corundum-mullitebrickandgradeBmullitebrick,wereanalyzedinproperties.ItisfoundthatthecoolingzoneliningadoptingSiCcontainingbricksormullite-andalusitebrickshasmuchlongerservicelife.Basedonthis,anewtypeofwearresistantbrickwasdeveloped.Thebrickhasacompressivestrengthof135MPa,awearlossof2.10cm~3(onlyaquarterofthatofthegradeBmullitebrick),andahigherbulkdensitythanthegradeBmullitebrick.Theapplicationofthebrickina140t·h~(-1)cokedryquenchingovenshowedthatitperformedbetterthanthegradeBmullitebrick.Thecoolingzoneadoptingthenewbrickshasalowercokedischargingtemperature,whichisbeneficialtotheenhancementofheatrecoveryefficiencyandsteampowergeneration.

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