利用新疆高炉渣制备微晶玻璃的研究  

Research on Preparation of Glass-ceramics with Blast Furnace Slag from Xinjiang Area

作　　者：杨淑敏[1] 张伟[1] 戴晔[1,2] 

机构地区：[1]喀什师范学院物理系,喀什844000 [2]上海大学理学院物理系,上海200444

出　　处：《硅酸盐通报》2014年第1期48-53,共6页Bulletin of the Chinese Ceramic Society

基　　金：新疆维吾尔自治区高校科研计划项目(XJEDU2012S34);国家自然科学基金(60908007)

摘　　要：以新疆高炉渣为原料,辅以少量钾长石为助熔剂,采用直接烧结法制备高炉渣微晶玻璃。利用DSC、XRD及SEM等测试手段,对微晶玻璃热处理制度、物相组成及显微结构进行了研究并探讨了粉体粒度大小和钾长石含量对微晶玻璃性能的影响。结果表明,微晶玻璃主晶相为钙镁黄长石,晶体呈颗粒状。样品的各项性能和析晶能力随粉体粒度减小而增大,钾长石对微晶玻璃析晶能力有一定促进作用,但随着粉体粒度的减小而逐渐减弱。钾长石含量过高时,导致玻璃内液相过多而影响制品的力学性能。由球磨60 h的粉体添加5wt%钾长石制备的样品各项性能最好,密度为2.81 g/cm3,抗弯强度为87.76 MPa,显微硬度为5.60 GPa。To reuse the solid waste effectively, blast furnace slag from Xinjiang area was mixed with a small amount of potassium feldspar as fusing agent to prepare glass-ceramic. The glass-ceramics was prepared by direct sintered method. The thermal property, phase composition and micro-morphology of the samples were studied by DSC, XRD and SEM. Meanwhile, we also discussed that the effect of the particle size and potassium feldspar additives on the performances of glass-ceramic. The results show that the main crystal phase of glass-ceramics is akermanite and the crystal of glass-ceramics is granular. The performances of glass-ceramic and crystallization ability are improved with decrease of the particle size. The potassium feldspar additives play a role in promoting the crystallization ability, but this effect gradually degrades with the decrease of the particle size. We think that the content of potassium feldspar should be not too much, because with the increasing of feldspar, the performance of glass-ceramics decline. The performance of glass-ceramic prepared by the powder ball-milled for 60 h adding 5wt% potassium feldspar is the best, and the density 87.76 MPa, 5.60 GPa, respectively. , the bending strength, micro-hardness are 2.81 g/cm3,

关 键 词：微晶玻璃 高炉渣 粒度 钾长石 

分 类 号：TQ171[化学工程—玻璃工业]