-10-第45卷第6期非金属矿Vol.45No.62022年11月Non-MetallicMinesNovember,2022赤泥免烧胶凝材料制备研究王浩1,2王海峰1,2*王家伟1,2赵平源1,2董馨予1,2郝文豪1,2王芹1,2黄碧芳1,2（1贵州大学材料与冶金学院，贵州贵阳550025；2贵州省冶金工程与过程节能重点实验室，贵州贵阳550025)摘要为提高赤泥的综合利用率，本试验采用一种不产生泛霜的赤泥免烧凝胶体制备方法。在赤泥高掺量（大于70%）的条件下，探究水泥、石灰掺量和养护时间对赤泥免烧砖性能的影响，并监测其浸出液中Na+含量。结果表明，赤泥用量为100g，当水泥添加量为25%，石灰添加量为3%，激发剂用量为3%时，制得的赤泥免烧胶凝体养护15d，抗压强度和抗折强度分别达到11.32MPa和2.64MPa，无泛霜，强度达GB/T5101-2017《烧结普通砖》MU10等级。赤泥中Na+得到有效固定，水平振荡法测得添加水泥和石灰后Na+浸出质量浓度从赤泥原渣的2.0135g/L分别降低到0.4235g/L和0.4285g/L。关键词赤泥；免烧砖；性能；激发剂中图分类号：X705；TU528文献标志码：A文章编号：1000-8098(2022)06-0010-04StudyonPreparationofRedMudUnburnedCementitiousMaterialWangHao1,2WangHaifeng1,2*WangJiawei1,2ZhaoPingyuan1,2DongXinyu1,2HaoWenhao1,2WangQin1,2HuangBifang1,2(1SchoolofMaterialsandMetallurgy,GuizhouUniversity,Guiyang,Guizhou550025;2GuizhouProvincialKeyLaboratoryofMetallurgicalEngineeringandEnergySaving,Guiyang,Guizhou550025)AbstractForthepurposeofimprovingthecomprehensiveutilizationofredmud,thispaperproposedapreparationmethodofredmudunburnedgelwithoutfrosting.Theredmudunburnedcementitiousbodywaspreparedundertheconditionofhighcontent(redmudcontentmorethan70%),andtheeffectsofcement,limeandcuringtimeonthepropertiesofredmudunburnedbrickswereinvestigated,andtheNa+contentintheleach-ingsolutionwasmonitored.Theresultsshowthatfor100gredmud,whentheamountofcementis25%,theamountoflimeis3%,andtheamountofactivatoris3%,thecompressivestrengthandflexuralstrengthofthepreparedredmudunburnedgelat15dare11.32MPaand2.64MPa,respectively,withoutfrosting,andthestrengthreachestheMU10levelofGB/T5101-2017"Firedcommonbricks".Na+intheredmudwaseffectivelyfixed.TheleachingconcentrationofNa+decreasedfrom2.0135g/Lto0.4235g/Land0.4285g/Lresp...
