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1、Unit23RefractoryBondsandBinders耐火材料结合和黏合剂1、Theimportanceofbondphaseinrefractories,inholdingtheaggregate/grainphasestogetherandenablinglargecomponentstobefabricated,isindicatedbyuseofthetypeofbondintherefractoryname.耐火材料中结合相在维持骨料/晶粒相的结合及使大元件能够焊接在一起的重要作用通过以耐火材料的名义使用的黏合类型得以表明。Thefiredintegrityofre
2、fractoriesreliedonnaturalbondingorthesilicateoraluminosilicatebondsderivedfromvitrificationreactions.耐火材料煅烧的完整性依赖于自然粘结或硅酸盐或源自玻璃化反应的铝砂酸盐结合。Bondsinitiallyweresynthesizedthroughtheuseoffineadditions,termed"mineralizers,"laterfollowedbytheintroductionofseparatecementitiousandglassybondsystems.结合剂最初
3、是由精制添加剂来合成的,命名为矿化剂。后来紧接着引入了分开的似水泥的和玻璃的粘结体系。2、Oneofthemostsignificantdevelopmentsinbondsystemshasbeenofthoseusedformonolithicorunshapedrefractoriesthatcanbeformedandshapedinsitu.粘结剂体系的最重要发展之一是用于整块或未加工的耐火材料,这些不定型的耐火材料可以原位成型加工Monolithicrefractorymaterialsaremixturesthatcontainaggregatesandbindersp
4、reparedready-for-useeitherdirectlyintheconditioninwhichtheyaresuppliedoraftertheadditionofsuitableliquids.块体耐火材料是一种混合物,包含骨料和黏合剂,事先准备好以备用。这些备料要么是在供应的条件下要么是在适当的液体添加之后。Monolithicrefractorieshavebeenknownformanyyears,butitisonlysincethe1960sthattheirusehasgainedgeneralacceptanceintherefractorycommu
5、nity.块体耐火材料已经为人所知多年,但是直到1960s以后它们的应用才引起耐火材料协会的广泛关注。Thetypesofmonolithicsnowcommonplace,suchascastables(adrymix,which,whenmixedwithwater,canbeshapedbycastingorvibrating),gunningmixes(free-flowingmixturesspeciallymadeforplacingbypneumaticormechanicalprojection),andmoldablesorplastics(aplastic"cla
6、y"form,whichcanberammedintoposition),allhaveevolvedfrombondsystemslargelydifferentfromthoseusedinbrick.目前普及的块体的类型,如铸块(一种干式混合,当与水混合时可以通过铸造和振荡成型)、喷补料(自由流动的混合物,特别为利用空气或机械力喷射的浇铸而成)、可模压或可塑料(一种可塑粘土的类型,可以捣打成型),都是从黏合剂体系中演变而来的,这和在砖体中使用的那些有很大的不同。Unshapedrefractories,ingeneral,usesimilaraggregatematerials
7、asshapedbrick.未成形的耐火材料,一般来说,都是使用相似的骨料作为成型砖体。However,thebindersusedtoformthebondingphaseareverydifferent,andithasbeendevelopmentsinaluminate-,silicate-,andphosphate-bondsystemsorcombinationsofthesesystemsthathasledtothewidespreadus