Study on Properties of Castable Made of Lightweight Spherical Mullite Aggregate

摘要：

　　The castable were prepared from light spherical mullite aggregate,bauxite,SiO2 fine powder, α-Al2O3 fine powder and calcium aluminate cement.The performance changes of castable was studied after heat treatment at 110 ℃ for 24h,1100 ℃ for 3h,1200 ℃ for 3h and 1300 ℃ for 3h.The results illustrate that the cold modulus of rupture and hot modulus of rupture of the castable increase with the increase of temperature.The cold crushing strength increases with the increase of temperature,but decreases at 1200 ℃.After the sample is heat treated at 1300 ℃,the thermal conductivity is 0.257 W·m-1·K-1,0.362 W·m-1·K-1,0.431 W·m-1·K-1 at 300 ℃,600 ℃ and 900 ℃,respectively.

关键词： spherical lightweight mullite aggregate castable thermal conductivity

作者: ZHAO Hua ZHAO Fei ZHANG Qianqian GE Tiezhu

作者单位: High Temperature Ceramic Institute of Zhengzhou University,Zhengzhou 450052,China;Key Laboratory of High Temperature Functional Materials of Henan Province,Zhengzhou 450052,China

会议类型: 国际会议

会议名称: Conference on Refractories International 2018, CRI2018)(2018国际耐火材料学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2018-10-17（万方平台首次上网日期，不代表论文的发表时间）