摘要
利用拜耳法赤泥、页岩和粉煤灰等原料制备了高强陶粒。赤泥掺入量为50%时,陶粒堆积密度840 kg/m3,筒压强度达到7.5 MPa,强度标号45 MPa1,h吸水率7.6%,表观密度1 000 kg/m3,孔隙率16.0%,放射性能够满足作为轻集料的活度要求。利用XRD、SEM等分析手段,对赤泥陶粒烧结机理进行了探讨。
High-strength ceramisite was prepared by using Bayer red mud, shale and fly ash. When the content of red mud was 50% , ceramisite bulk density of 840 kg/m3, cylindrical compress strength of 7.5 MPa, strength grade of 45 MPa, 1 h-water absorption of 7.6% , apparent density of 1 000 kg/m3 and porosity of 16.0% were obtained. The radioactivity of the ceramistie can meet the requirement for lightweight aggregate. The sintering mechanism of red mud ceramisite was analyzed by XRD, SEM and other analytical methods.
出处
《矿冶工程》
CAS
CSCD
北大核心
2011年第5期111-113,共3页
Mining and Metallurgical Engineering
基金
贵州省科技攻关项目(黔科合SY字[2010]3021号)
贵州省创新能力建设项目(08009)
关键词
拜耳法赤泥
页岩
粉煤灰
高强烧结陶粒
赤泥陶粒
bayer red mud
shale
fly ash
high-strength sintered ceramisite
red mud ceramisite
