高铝砖按照铝含量分为特级、一级、二级和三级高铝砖。特级高铝砖的铝含量在80%以上,铝含量越高,杂质就越少,利用寿命也会比通俗高铝砖长。

特级高铝砖的质料和通俗高铝砖差别。耐火度是一个根本的感性目标,通俗的高铝砖耐火度不低于1750摄氏度,而特级高铝砖的耐火度在1800摄氏度。高铝砖的铝含量越高,质猜中刚玉相的比例、莫来石𒊎的含量也就越大,有助于高铝砖荷重硬化温度的进步。铝含量的增添,玻璃相的铁含量就降落,杂质含量低,高铝砖的荷𒉰重硬化温度进步,致密性加强,高铝砖的抗渣腐蚀和耐磨性也加强。

特级高铝砖首要利用在反转展转窑的过渡带、热风炉、高炉炉缸、鼓风炉、白灰窑、电炉炉顶等热工装备。因为特级高铝砖铝含量较高,比拟通俗高铝砖的价钱会高一些。挑选采办时仍是要按照窑炉的现实环境来挑选适合的高铝砖。
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