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首页> 外国专利> BLOWING LANCE FOR REFINING, BLOWING LANCE APPARATUS FOR REFINING, METHOD OF DESILICONIZING OF MOLTEN IRON, AND METHOD OF PRETREATMENT OF MOLTEN IRON

BLOWING LANCE FOR REFINING, BLOWING LANCE APPARATUS FOR REFINING, METHOD OF DESILICONIZING OF MOLTEN IRON, AND METHOD OF PRETREATMENT OF MOLTEN IRON

机译：精炼吹气枪，精炼吹气设备，硅铁脱硅的方法以及硅铁的预处理方法

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A gas blowing lance (1) for blowing oxygen gas into a molten metal. It has a double-tube structure comprising an inner tube (2) and an outer tube (3). Oxygen gas is blown through the inner tube, and a hydrocarbon gas is blown through the space between the inner tube and the outer tube. An Al2O3-MgO monolithic refractory having an MgO content of 5-30 mass% is used as a refractory coating layer for at least a blowing end part of the outer periphery of the outer tube. The lance hence has high durability and can be used more times than conventional ones. It contributes to a reduction in production cost. Also provided is a method of the desiliconizing of molten iron which uses the blowing lance.
机译：一种将氧气吹入熔融金属的吹气枪（1）。它具有包括内管（2）和外管（3）的双管结构。氧气吹过内管，而烃气吹过内管和外管之间的空间。 MgO含量为5〜30质量％的Al 2 O 3 -MgO单块耐火材料用作外管的至少外周吹出端部的耐火涂层。因此，喷枪具有高的耐久性，并且可以比传统的喷枪使用更多的时间。它有助于降低生产成本。还提供了一种使用吹气枪对铁水进行脱硅的方法。

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