简介：Recently,theBureauofGeologyandMineralExplorationandDevelopmentofGuizhouProvincedetectedanabout140milliontonsresourceinZheng'anCounty,100milliontonsofwhichwasbauxite.Thisistheseconddetectedsuperlarge-scaledbauxitedepositaftertheDazhuyuanbauxitedepositinWuchuanCounty.Intheprospectingarea,theaveragethicknessofvisibledepositis1.8m,andtheaveragegradeofAl2O3is

简介：Thenon-burnedcorundumspineluppernozzle,maldeofelectro-fusedcorunndumpowder,highpureelectro-fusedspinelwiththermosettingresinasbinder,addedwithcompoundant-oxdationadditives,hassuperiorHMOR,excellentcorrosionresistanceandsimpleproductionprocess,Theuppernozzlewasusedin90MTladleandtheservicelifewasimprovedby50%to60%

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.

简介：ThetechnicalfactorsofcastablesinnovationofmainirontroughinblastfurnacesofWISCOinrecenttenyearswereanalyzed,andcorrosionprocessofdensecorundum,sub-whitecorundumandbrowncorundumaggregatesinthecastablesforthemainirontroughwasresearched.Itisregardedthatthereisnoinevitablerelationbetweencastablespropertiesandservicelife,anditmustbeconsideredthatwhetherthenormaltechnicalindexinthestandardcanbeusedasjudgmentbasis.Basedontheimprovementofmatrix,theservicelife(oncethroughputofhotmetal)ofcastablesusedinmainirontroughincreasesfrom90000tonsto140000-180000tons;thepropertiesofdifferentrawmaterialsarefullyapplied,andstructureimprovementofirontroughandprogressofmaterialtechniqueareveryimportantreasons.

简介：UsingAl2O3-MgOcastableinlargeladlecanavoidcontainationofmoltensteelfromcarbon-containingrefractoriesandincreasladleservicliferemarkably,Theadditionofmagnesiaandfinepowder,theeffectofgrainsizeontheproper-tiesofthecastable,especiallylinearchangeandstructurespallinghavebeenstudied,Castablepro-duedforlargeladlewithsmallweareratehasgotgoodapplicatioresult.

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