简介:TheannualoutputofChina'srefractoriesin1949was74thousandtons,andwas29.11milliontonsin2007,whichwas65%oftheworldtotalrefractoriesoutput.TheexportofChina'srefractoryproductsandrawmaterialsin2008was6.18milliontons,whichwereexportedtohundredsofcountriesandregionsintheworld.Chinaisabigcountryinthefieldofrefractoriesproductionandrefractoriesexport,whichhasdevotedalottorelativehightemperatureindustry.
简介:Inrecentyears,Chinahasfullydevelopedinoutput,quality,andtechnicaladvancementofrefractories,andbecomethebiggestcountryinrefractoriesproductionandconsumptionintheworld.Meanwhile,educationandtraininginChina'srefractoriesindustryhavedevelopedrapidly.Thispaperintroducesthepresentsituationsofundergraduateeducation,postgraduateeducation,academiceducation,andvocationalandothertrainingofChina'srefractoriesindustry,includingthestudentrecruitingsituation,subjectarrangement,teachersforce,andR&Dequipmentlevel,andalsoputsforwardsomesuggestionsforChina'srefractorieseducationandtraining.
简介:Chinahaslongbeenrecognisedasanimportantsourceofrefractoryrawmaterialsforrefractorymarketsworldwide.Bauxite,magnesia,fusedalumina,andrefractoryclaysinparticular,havemaintainedChina'sstrongpositionastheworld'sleadingsupplieroftheseminerals.However,importantchangeshavetakenplaceirthestructureofChineseandglobalsupplyoftheseminerals.Moreover,theworldrefractorymarketandthemineralstradingsectorhavealsoundergonearadicaltransformationthathasinfluencedmineralsupply,andshiftedendproductmanufacturetoChina.ThispaperhighlightsthesechangesandseeshowtheyhaveimpactedonChinaasaworldsourceofrefractoryminerals.
简介:EffectofrareearthoxideonpropertiesofCaO-MgO-SiO2systembio-solubleceramicfibers.WangXitang,LiuHao,ZhangBaoguo,etal.(321-324).-Rareearthoxide,Ceramicfiber,Bio-solubility,Crystallizationbehavior-CaO-MgO-SiO2systembio-solubleceramicfibersweremadebymelting-spinningprocessusingnaturalwollastonite,talc,andquartzsandasmainstartingmaterials,andrareearthoxideasadditive.Theviscosityofthemelts,bio-solubilityandcrystallizationbehaviorathightemperaturesoftheceramicfiberswereinvestigated.Theresultsindicatethattheintroductionofrareearthoxide:(1)broadsthefiber-formingtemperaturerange;(2)reducesthesolutionspeedofCaO-MgO-SiO2systembio-solublefibersinlungliquidbutdoesn'tchangethebio-solubleattribute;(3)strengthensthenetworkstructureofthefibersandrestrainsthecrystallizationbehaviorathightemperatures.
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