耐火材料 ›› 2022, Vol. 56 ›› Issue (1): 1-5.DOI: 10.3969/j.issn.1001-1935.2022.01.001

• 研究开发 •    下一篇

亚微米SiO2粉体对无水泥铁沟浇注料性能的影响

程水明1,2)(), 赵惠忠1)(), 魏建修2), 陈金凤2), 蔡玮2)   

  1. 1)武汉科技大学 省部共建耐火材料与冶金国家重点实验室 湖北武汉 430081
    2)中冶武汉冶金建筑研究院有限公司 湖北武汉 430081
  • 收稿日期:2021-03-31 出版日期:2022-02-15 发布日期:2022-02-24
  • 通讯作者: 赵惠忠,男,1961年生,博士,教授。E-mail:wustnano@163.com
  • 作者简介:程水明:男,1972年生,博士研究生,高级工程师。E-mail : wustcsm@163.com
  • 基金资助:
    国家自然科学基金资助项目(51804233)

Effect of submicron SiO2 powder on properties of cement free iron trough castables

Cheng Shuiming1,2)(), Zhao Huizhong1)(), Wei Jianxiu2), Chen Jinfeng2), Cai Wei2)   

  1. 1)The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China
  • Received:2021-03-31 Online:2022-02-15 Published:2022-02-24
  • Contact: Zhao Huizhong

摘要:

以致密刚玉、碳化硅等为主要原料,以w(SiO2)=99.9%的亚微米SiO2粉体(d50=0.242 μm)为结合剂,制备了一种新型无水泥铁沟浇注料。研究了亚微米SiO2粉体加入量(质量分数分别为3%、4%、5%、6%、7%、8%、9%)对其性能的影响,并从亚微米SiO2粉体的粒度分布、红外光谱等角度,分析探讨了亚微米SiO2粉体的作用机制。结果表明:1)亚微米SiO2粉体可以单独作为铁沟浇注料的结合剂制备出无水泥铁沟浇注料;2)相比传统铁沟浇注料,无水泥铁沟浇注料在加水量、高温抗折强度等方面取得突破性进展,亚微米SiO2粉体的最佳加入量为4%~6%(w)。

关键词: 铁沟浇注料, 无水泥, 亚微米SiO2粉体, 显微结构

Abstract:

A new cement free iron trough castable was prepared with dense corundum and silicon carbide as the main raw materials and submicron SiO2 powder (d50=0.242 μm,99.9 mass% SiO2) as the binder.The effect of the submicron SiO2 powder addition (3%,4%,5%,6%,7%,8%,and 9%,by mass,respectively) on the properties of the prepared castables was studied.The working mechanism of submicron SiO2 powder was analyzed from the perspectives of the particle size distribution and infrared absorption spectrum.The results show that:(1)cement free iron trough castables can be prepared using submicron SiO2 powder alone as the binder;(2)compared with traditional castables,the cement free castables have made a breakthrough in the water addition and the hot modulus of rupture.The optimal submicron SiO2 powder addition is 4%-6%.

Key words: iron trough castable, cement free, submicron SiO2 powder, microstructure

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