Used for corundum bricks, mullite bricks, silicate bricks masonry in blast furnaces, hot air stoves. **用于高炉、风炉砌筑刚玉砖、来石砖、线石砖、蠕变高铝砖。
Our permeable bricks for ladle are a kind of corundum product with non-oxide developed by beijing science and Technology University and our plant. 我厂生产的钢包透气砖是同北科大共同研究开发的非氧化物结合的刚玉质新产品。
BQQ series corundum porous diffuser is a aeration device used in conventional, extended activated-sludge system for industrial and municipal wastewater treatment engineering. 产品简介:BQQ系列刚玉微孔曝气器适用于工业污水、政污水处理工程中传统的、展的活性污泥处理工艺。
corundum
[ noun ] very hard mineral used as an abrasive <noun.substance>
Corundum \Co*run"dum\ (k[-o]*r[u^]n"d[u^]m), n.; pl. {Corundums} (k[-o]*r[u^]n"d[u^]mz). [Also corindon.] [From Hind. kurand corundum stone.] (Min.) The mineral alumina ({Al2O3}), as found native in a crystalline state. Transparent varieties are used as gemstones, including {sapphire}, which is the fine blue variety; the {oriental ruby}, or red sapphire; the {oriental amethyst}, or purple sapphire; and {adamantine spar}, the hair-brown variety. It is the hardest substance found native, next to the diamond. [1913 Webster +PJC]
Note: The name corundum is sometimes restricted to the non-transparent or coarser kinds. {Emery} is a dark-colored granular variety, usually admixed with magnetic iron ore.