CAJ | 학술논문

莫来石的导热系数低、高温下体积稳定性好，适合用来制备轻质耐火材料。以硅石粉和工业氧化铝为起始物料，加入一定量的烧失物，通过在1350℃下煅烧6h制得了微孔莫来石轻质骨料。研究了碳黑、焦炭和无烟煤这三种烧失物对合成的莫来石骨料体积密度、气孔孔径分布、莫来石生成量及组织结构的影响。认为，不同的烧失物对微孔莫来石的体积密度、莫来石的生成量、莫来石的组织结构影响较大，而对微孔莫来石中的气孔孔径分布影响不明显。用无烟煤作烧失物，得到的微孔莫来石体积密度最小，莫来石的生成量最高，结构均匀。
막래석적도열계수저、고온하체적은정성호，괄합용래제비경질내화재료。이규석분화공업양화려위기시물료，가입일정량적소실물，통과재1350℃하단소6h제득료미공막래석경질골료。연구료탄흑、초탄화무연매저삼충소실물대합성적막래석골료체적밀도、기공공경분포、막래석생성량급조직결구적영향。인위，불동적소실물대미공막래석적체적밀도、막래석적생성량、막래석적조직결구영향교대，이대미공막래석중적기공공경분포영향불명현。용무연매작소실물，득도적미공막래석체적밀도최소，막래석적생성량최고，결구균균。
Mullite has lower thermal conductivity, advanced volume stability at high temperature, and is suitable to manufacture lightweight refractories. The micropored mullite has been fabricated by Using industrial alumina and nature silica as starting materials, adding some burning -out materials, then fired at 1350℃ for 6h. The influences on the bulk density, pore size distribution, mullite content and mierostrueture of mieropored mullite by adding these different burning - out materials, such as carbon black, coke, and anthracite, have been investigated. It is concluded that the influences of different burning - out materials on the bulk density, mullite content, and microstructure of mieropored mullite are significant. These three burning -out materials have a similar effect for the pore size distribution. The micropored mullite has the smallest bulk density, the highest mullite content, and more uniform microstructure by using anthracite as the burning- out material.