H_(2)O_(2)加入量对ρ-Al_(2)O_(3)结合刚玉浇注料抗爆裂性能的影响  

Effect of H_(2)O_(2) addition on anti-explosion performance of ρ-Al_(2)O_(3) bonded corundum castables

作　　者：王欢 王战民[1] 冯海霞[1] 曹迎楠[1] 柳军[1] 许应顺 Wang Huan;Wang Zhanmin;Feng Haixia;Cao Yingnan;Liu Jun;Xu Yingshun

机构地区：[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

出　　处：《耐火材料》2022年第2期107-111,共5页Refractories

摘　　要：为了提高ρ-Al_(2)O_(3)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H_(2)O_(2),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H_(2)O_(2)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,H_(2)O_(2)的适宜加入量应控制在0.075%(w)以内。In order to improve the anti-explosion performance of ρ-Al_(2)O_(3) bonded corundum castables,H_(2)O_(2) 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 H_(2)O_(2) 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 H_(2)O_(2) shall be within 0.075%.

关 键 词：H_(2)O_(2) ρ-Al_(2)O_(3) 刚玉浇注料 抗爆裂性能 透气度 孔径分布 

分 类 号：TQ175[化学工程—硅酸盐工业]