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高铝砖级别怎么区分

2025-04-07 07:46:41

推荐回答（1个）

回答1：

高铝砖从三氧化二铝(Al2O3)含量分以下几种：

刚玉砖：铝含量不低于90％；
特级高铝砖：铝含量不低于85％；
一级高铝砖：铝含量不低于75％；
二级高铝砖：铝含量不低于65％；
三级高铝砖：铝含量不低于55％。
新密的不少厂都有高铝砖，还数新密的科威耐材，可以看看。

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