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高铝耐火砖的等级与区别解析
2024/08/27
荣盛窑炉耐火材料有限公司
技术文章
深入探讨一级高铝砖和二级高铝砖在含铝量、耐火度、荷重软化温度、物理性能及价格上的显著区别。
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一、含铝量不同

一级高铝砖的含铝量通常高于二级高铝砖。一般来说,一级高铝砖的氧化铝含量在75%-80%左右,而二级高铝砖的氧化铝含量则在65%-75%之间。更高的氧化铝含量使得一级高铝砖在高温环境下具备更佳的化学稳定性和耐火性能。

二、耐火度不同

在耐火度方面,一级高铝砖通常能够达到1790℃左右,而二级高铝砖则在1770℃左右。因此,二级高铝砖的耐火度要稍逊于一级高铝砖。

三、荷重软化温度不同

在荷重软化温度方面,一级高铝砖的荷重软化温度在1510℃左右,而二级高铝砖的荷重软化温度约为1460℃左右。因此,相比之下,一级高铝砖的抗蠕变性能优于二级高铝砖。

四、物理性能不同

在体积密度、显气孔率以及常温耐压强度等物理性能上,一级高铝砖和二级高铝砖之间也存在显著差异。一级高铝砖的体积密度通常为2.5g/cm³、显气孔率约为22%,而常温耐压强度约为70Mpa;相较之下,二级高铝砖的相关数值则分别为2.4g/cm³、23%和60Mpa。因此,一级高铝砖在抗侵蚀和抗磨损方面更具优势。

五、价格不同

价格也是两者的一大区别。由于一级高铝砖在原料选取和生产工艺上要求更高,其成本更高,因而价格也更为昂贵。

综上所述,一级高铝砖和二级高铝砖在含铝量、耐火度、荷重软化温度、物理性能和价格等方面有明显差异。在实际应用中,企业应根据具体的使用条件和需求选择适合的高铝砖等级,以确保最佳的性价比和使用效果。

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