以油页岩渣为原料制备微晶泡沫玻璃  

Preparation of Foam Glass-ceramic from Oil Shale Residue

作　　者：冯宗玉[1] 薛向欣[1] 李勇[1] 杨合[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《过程工程学报》2008年第2期378-383,共6页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50674024)

摘　　要：以油页岩渣为主要原料,加入其他辅助原料制备了微晶泡沫玻璃,并分析了各种因素对微晶泡沫玻璃性能的影响.结果表明,发泡剂碳酸钙和稳泡剂磷酸钠的最佳掺量为4%和6%;最佳的工艺条件为:发泡温度1080℃,发泡时间15min,升温速率14℃/min.试样经过预热、烧结、发泡、稳泡和退火等热处理工艺,完成了发泡和析晶过程.其中发泡工艺需要较高温度,并在短时间内保温.XRD,SEM及FT-IR分析表明,试样已经完全转化为微晶泡沫玻璃,主晶相为普通辉石,次晶相为钙长石,晶体呈纤维状结构且相互交织.与相关材料比较,微晶泡沫玻璃具有机械强度高和质轻保温隔热的优点。Foam glass-ceramic was prepared with oil shale residue as major raw material, adding other auxiliary materials. The effects of various factors on the properties of foam glass-ceramics were analyzed. The results showed that the optimal contents of both foaming agent calcium carbonate and stabilizing agent sodium phosphate were 4% and 6% respectively. The optimal process conditions of heat treatment were obtained as follows： the foaming temperature of 1080 ℃, foaming time of 15 min, and heating rate of 14 ℃/min. The foaming and crystallization processes of samples were completed after heat treatment including preheating, sintering, foaming, stabilizing and annealing. In addition, the foaming process needed higher temperature and was held in a short time. The samples were transformed into foam glass-ceramic as shown by the analysis of XRD, SEM and FT-IR. The primary crystallization phase was augite, and the minor crystallization phase anorthite. These crystals formed in fibroid minicrystal structure, and complected one another. Compared with related materials, the properties of foam glass-ceramic integrated the advantages of high mechanical strength and light weight, heat preservation, and thermal insulation.

关 键 词：油页岩渣 微晶泡沫玻璃 发泡剂 发泡温度 

分 类 号：TQ171.418[化学工程—玻璃工业]