免养护轻质耐火浇注料的研制  

Development of self-curing lightweight refractory castable

作　　者：胡志华[1] 严云[1] 赵慧颖[2] 

机构地区：[1]西南科技大学材料科学与工程学院,绵阳621002 [2]中国石化集团公司第四建设公司

出　　处：《耐火材料》2004年第1期35-36,39,共3页Refractories

摘　　要：采用轻质页岩陶砂、漂珠、闭孔膨胀珍珠岩为原料 ,以改性固态水玻璃为结合剂研制了免养护轻质耐火浇注料。研究了结合剂、促凝剂及SiO2 超微粉添加量对轻质耐火浇注料性能的影响。结果发现 :当结合剂的用量为 1 2 %～1 5 % ,促凝剂的用量为结合剂的 4.5%～5 .5 %时 ,可保证轻质浇注料具有优良的性能 ;SiO2 超微粉的加入 ,既可以提高浇注料的高温强度 ,又可以改善其使用性能 ,最佳添加量为 5 %左右。研制的免养护轻质耐火浇注料具有体积密度小 ,热导率低 ,耐压强度高 ,易于施工等特点 ,是使用温度在1 1 0The self-curing lightweight refractory castable (SLRC) was prepared with expand ed lightweight shale grogs,cenospher and expanded perlite as starting materials and sodium silicate in solid state as binder.The effects of additions of binder ,accelerator and microsilica on the performances of SLRC were investigated.It is found that SLRC with excellent properties was obtained when the addition of bi nder ranges from 12% to 15% and that of accelerator 4.5%～5.5%.The microsilica c an both increase the high temperature strength and improve the performance of th e developed SLRC with the optimum addition of about 5%.The developed SLRC has m any good properties,such as low density,low thermal conductivity,high strength,e tc.It is an ideal material for the lining of various furnaces with service temp erature below 1100 ℃.

关 键 词：免养护轻质耐火浇注料 结合剂 促凝剂 硅微粉 加热炉 水玻璃 

分 类 号：TQ175.732[化学工程—硅酸盐工业]