耐火材料 ›› 2022, Vol. 56 ›› Issue (2): 107-111.DOI: 10.3969/j.issn.1001-1935.2022.02.003

• 研究开发 • 上一篇    下一篇

H2O2加入量对ρ-Al2O3结合刚玉浇注料抗爆裂性能的影响

王欢(), 王战民(), 冯海霞, 曹迎楠, 柳军, 许应顺   

  1. 中钢集团洛阳耐火材料研究院有限公司 先进耐火材料国家重点实验室 河南洛阳 471039
  • 收稿日期:2021-04-23 出版日期:2022-04-15 发布日期:2022-04-21
  • 通讯作者: 王战民,男,1966年生, 博士,教授级高级工程师。E-mail: wangzm@lirrc.com
  • 作者简介:王欢:男,1996年生,硕士研究生。E-mail: 2831357162@qq.com

Effect of H2O2 addition on anti-explosion performance of ρ-Al2O3 bonded corundum castables

Wang Huan(), Wang Zhanmin(), Feng Haixia, Cao Yingnan, Liu Jun, Xu Yingshun   

  1. State Key Laboratory of Advanced Refractories,Sinosteel Luoyang Institute of Refractories Research Co.,Ltd.,Luoyang 471039,Henan,China
  • Received:2021-04-23 Online:2022-04-15 Published:2022-04-21
  • Contact: Wang Zhanmin

摘要:

为了提高ρ-Al2O3结合刚玉浇注料的抗爆裂性能,在其中分别外加0、0.025%、0.050%、0.075%、0.100%、0.125%(w)的防爆剂H2O2,经混练、浇注成型后,一部分在室温下养护12 h后脱模,然后分别在450、500、550、600、650、700、750、800 ℃下进行抗爆裂试验;另一部分经养护、干燥、烧成后,检测其致密度、常温力学性能、透气度、孔径分布。结果表明:1)随着H2O2加入量的增大,浇注料的抗爆裂性能逐渐增强,平均孔径逐渐增大,致密度和强度逐渐减小。2)综合考虑,H2O2的适宜加入量应控制在0.075%(w)以内。

关键词: H2O2, ρ-Al2O3, 刚玉浇注料, 抗爆裂性能, 透气度, 孔径分布

Abstract:

In order to improve the anti-explosion performance of ρ-Al2O3 bonded corundum castables,H2O2 was added (0,0.025%,0.050%,0.075%,0.100% and 0.125%,by mass) as the explosion-proof agent.After mixing and casting,specimens were prepared.Some specimens were cured at room temperature for 12 h and demoulded for the anti-explosion performance test at different temperatures (450,500,550,600,650,700,750 and 800 ℃);the other specimens were cured,dried and fired,and tested in terms of the density,the cold mechanical properties,the air permeability and the pore size distribution.The results show that:(1)with the increase of the H2O2 addition,the anti-explosion performance of castables increases gradually,the average pore diameter increases gradually,and the density and the strength decrease gradually;(2)by comprehensive consideration,the appropriate addition of H2O2 shall be within 0.075%.

Key words: hydrogen peroxide, ρ-alumina, corundum castables, anti-explosion performance, air permeability, pore size distribution

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