耐火与石灰 ›› 2016, Vol. 41 ›› Issue (5): 14-17.

• 综述 • 上一篇    下一篇

刚玉质弥散透气砖的性能与应用

李志勋  王永辉  李建泽  孙良友  郭信鸽   

  1. 濮阳濮耐高温材料(集团)股份有限公司, 濮阳457000
  • 出版日期:2016-10-10 发布日期:2016-10-10

Performance and application of corundum based dispersive purging plug

Li Zhixun  Wang Yonghui  Li Jianze  Sun Liangyou  Guo Xinge   

  1. Puyang Refractories Group Co.,Ltd., Puyang 457000, China
  • Online:2016-10-10 Published:2016-10-10

摘要:

以刚玉、尖晶石为主要原料,添加Al2O3、SiO2微粉,按一定颗粒级配通过浇注的方式制备出一种免烧氧弥散透气砖,对其体积密度、抗压强度等理化性能进行检测,并在180t钢包上进行使用效果的测试。结果表明:刚玉质弥散砖体积密度≥2.8g·cm-3,耐压强度≥65MPa,显气孔率≤26%;与狭缝透气砖相比,吹通率高,使用寿命可提高30%以上;烧氧管、氧气、氮气消耗降低90%;残砖较长;使用安全,经济效益好。

Abstract:

Dispersive purging plugs without purging by oxygen were prepared with corundum and spinel as the main raw materials, alumina and silica fume as additives, adopting a certain particle size distribution and moulding by casting. Physical properties such as bulk density and compressive strength were determined, and the using effects were tested on a ladle of 180 tons. The results show that the bulk density is greater than or equal to 2.8g·cm-3, the compressive strength is greater than or equal to 65MPa and the apparent porosity is less than or equal to 26%; the blowing-though rate is higher than slit purging plugs, and the service life increases by 30% or higher; the consumptions of oxygen blowpipe and oxygen as well as nitrogen are reduced by 90%; the residual plugs are longer; the operation is safe and the economic benefit is remarkable.

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