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

简介：ThispaperreviewsthepresentdevelopmentsituationofrefractoriesforironmakingsysteminChina,whichincludesblastfurnace,hotblaststoveandcokedryquenching,etc.VarietiesandperformancesofrefractoriesusedbythetopsteelandirongroupssuchasBaosteel,WuhanI&SGroupandAnshanI&SGroupforironmakingwereexemplifiedandconcernedproblemswereanalyzed,togetherwithsolutionsandsuggestionsforfuturerefractoriesR&Dwork.

简介：

简介：

简介：

简介：ReviewonthedevelopmentofrefractoriestechnologyinChina'sironandsteelindustryduringtheperiodof"theninthfive-yearplan"hasbeenmade.Somesugges-tionsandopinionsonthefuturedevelopmentofrefractoriesscienceandtechnologyinChinahasbeenputforward,includingfullutilizationofdomesticrichresourcesofrefrac-toryrawmaterialstodevelopsophisticatedsyntheticrefrac-toryrawmaterialswithChinesecharacteristicsandtheR&Donhigh-techrefractoryproductsformeetingtherequire-mentofthedevelopmentofnewmetallurgicaltechnology.

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

简介：Theprinciplesandfeaturesofmicrowavesintering,theapplicationinrefractoriesandsynthesismethodsofZrB2arereviewed.ThesynthesisresultsofZrB2bythermitdeoxidatemethodshowthatproductionpriceofZrB2canbeeffectivelyloweredthroughmicrowavesynthesis.ItwillexpandtheapplicationofZrB2inrefractories.

简介：Anintroductionoftheongoingtechnologyofargon-blowingpurgingplugsinChinawaspresentedinthiswork.Gelpowderswereusedasstartingmaterialstoenhancethehightemperaturemechanicalpropertiesofthepurgingplugs.Compositepurgingplugadoptingextrusionformedgas-purgingbarandslithaditssurfacestructuraldesignimproved,whichenhancedtheresistancestothermalshockandmoltensteelpenetration,prolongingtheservicelife.Inaddition,thesafetywasgreatlyimprovedbyupgradingtheframeworkandproductionprocess,enhancingtheresistancetobreakout.Itisindicatedthatthedevelopingtrendistoproducepurgingplugsoflongerservicelifeandbettergaspurgingratewithdifferentstartingmaterialsandstructuredesignstomeettherequirementsofvariousmetallurgicalprocesses.

简介：

简介：

简介：InordertoimprovethemechanicalpropertiesofSiO2aerogel-glassfibercomposites,effectsofdifferentsolvents(cyclohexane,n-hexane,ethanol,acetone)anddifferentdispersingmodes(planetaryballmilling,ultrasonicdispersionandmechanicalstirring)anddispersingduration(10-40min)onthedispersionofchoppedalkali-freeglassfiberbundleswerestudiedtodeterminethebestdispersionprocess.Onthisbasis,thematerialswerebatchedaccordingtothemassfractionofSiO2aerogelpowdertochoppedalkalifreeglassfiberbundlesof90:10,andacertainamountofzincoxidelight-screeningagentandphenolicresinbinderwereadded.SiO2aerogelglassfibercompositespecimenswerepreparedbydirectaddingchoppedalkalifreeglassfiberbundlesandpre-dispersedchoppedalkalifreeglassfiberbundles,respectively.Thecoldcrushingstrengthandthethermalconductivityatdifferentsurfacetemperatures(300,400,500and600℃,respectively)ofthespecimensweremeasured.Theresultsshowthat:(1)theoptimumdispersionprocessofchoppedalkali-freeglassfiberbundlesisusingethanolassolventandmechanicalstirringfor30min;(2)pre-dispersionofchoppedalkali-freeglassfiberbundleshaslittleeffectonthethermalconductivityofSiO2aerogel-glassfibercompositesbutcanimprovethecoldcrushingstrength.

简介：BasedontheanalysesoftheliningtechnologiesofthehotpressformedcarbonbrickiuU.S.A.,ofthece-ramiccupinFranceandofthecreativeself-bakingcar-bonbrickinChina,thetechnologyofsemi-graphitizedcar-bonblock-ceramicbrickworkhasbeenstudiedanddeveloped,andhassuccessfullybenusedinNo.7blastfurnace(2580m^3)atAnshanIromandSteelCompanyandinNo.3blastfurnace(1200m^3)atTaiyuanIronandSteelCompany,Thispaperputsfourwardafeasibleschemeforrealizationoflongservicelivesofthebootmsandthehearthsoflarge-sizedblastfuracesinChina.

简介：

简介：