摘要
为了提高钢渣的资源化利用率,以钢渣和偏高岭土为原料,十二烷基硫酸钠为发泡剂,高铝水泥为粘结剂,采用直接发泡法制备多孔陶瓷;研究了钢渣与偏高岭土的掺比、烧结温度和发泡剂的掺量对多孔陶瓷性能的影响。结果表明,随着钢渣掺比的增加,多孔陶瓷的主晶相从钙长石相(Anorthite)向钙铝黄长石相(Gehlenite)转变,并随钢渣掺比的增加,多孔陶瓷的收缩率增大;多孔陶瓷的体积密度、气孔率与强度及烧结温度成正相关,与发泡剂的加入量呈负相关。当钢渣与偏高岭土的掺比为4∶6,浆料的固含量为60%,发泡剂的掺量为0.08%,经1190℃烧结2 h所制得的多孔陶瓷主晶相为钙长石相(Anorthite),体积密度达到446.6 kg/m^(3)、抗压强度达0.5 MPa。
In order to improve the resource utilization rate of steel slag,steel slag and metakaolin are used as raw materials,sodium dodecyl sulfate is used as a foaming agent,aluminate cement is used as a binder.Porous ceramics are prepared by a direct foaming method.The aim of the present work was to investigate the effect of steel slag content,sintering temperature and the content of foaming agent.The results show that as the amount of steel slag added increases,the main crystalline phase of porous ceramics changes from anorthite phase to gehlenite,and the shrinkage rate of porous ceramics increases.The volume density,porosity and strength of porous ceramics are in direct proportion to the sintering temperature and in inverse proportion to the amount of foaming agent added.When the ratio of steel slag to metakaolin is 4∶6,the solid content of the slurry is 60%,the mixing amount of the foaming agent is 0.08%,the porous ceramics with a volume density of 446.6 kg/m^(3),compressive strength 0.5 MPa are obtained after sintering at 1190℃for 2 hours.The main crystal phase of the porous ceramic is anorthite.
作者
黄子宸
吴其胜
江铭
苗晨
HUANG Zichen;WU Qisheng;JIANG Ming;MIAO Chen(School of Materials Science and Technology,Jiangsu University,Zhenjiang 212013,China;School of Materials Science and Technology,Yancheng Institute of Technology,Yancheng 224051,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2022年第2期277-283,327,共8页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(51572234)
江苏省重点研发计划资助项目(BE2018101)。
