ladle porous plug
2025-09-22
透气砖（Porous Plug）是冶金工程领域用于钢包炉外精炼的关键功能元件，通过底部吹氩实现钢液搅拌，具有热稳定性强、抗冲刷性好等特点，属于高寿命节能降耗产品。透气砖是炉外精炼工艺能够顺利实施的最关键的功能元件，对炉外精炼的可靠性和完备性起着至关重要的作用。
刚玉-尖晶石质狭缝式定向形透气砖， 因其优异的抗侵蚀性 和高吹通率、使用寿命长成为当今市场上主流产品。
我厂生产的铬刚玉-尖晶石质狭缝式定向形透气砖， 通过合理的MgO和Al2O₃ 和Cr2O3的骨料、细粉、结合剂或外加剂改善其常温和高温使用性能，从而到达炼钢工艺的要求。
我厂生产的 狭缝型透气砖 可根据现场使用条件包括精炼钢种、精炼工艺、钢包的容量、温度、钢水静压力等设计合理的狭缝，可以使透气砖的吹通效果达到最佳、在使用中的寿命增长、安全性能稳定。
钢水接触到的工作面和永久层存在一定的温度差，致使透气砖的狭缝结构在该温度梯度下形成热应力而使砖体狭缝的结构宽度有所增加，冶炼过程中的钢水会流入狭缝结构中进而致使气体流通量减小，到后期导致透气砖狭缝完全堵塞。当透气砖的狭缝数量和长度一定时，通过对透气砖的位置进行合理的设计，能够使冶炼过程中的钢水得到快速的搅拌，进而提高钢水成分、温度的均匀性。
Porous plugs are key functional components used in ladle refining in metallurgical engineering. They achieve molten steel agitation through bottom-blowing argon. They offer strong thermal stability, excellent erosion resistance, and are long-life, energy-saving, and energy-saving products. Porous plugs are crucial for the smooth operation of the ladle refining process and play a vital role in its reliability and integrity.
Corundum-spinel slotted, directional, and porous plugs are a mainstream product in the current market due to their excellent corrosion resistance, high blow-through rate, and long service life.
Our chrome corundum-spinel slotted, directional, and porous plugs utilize a combination of MgO, Al₂O₃, and Cr₂O₃ aggregates, fine powders, goog binders, or admixtures to improve their performance at both room and high temperatures, meeting the requirements of the steelmaking process.
Our slit-type Porous plugs can be optimally designed with slots based on on-site conditions, including refined steel grade, refining process, ladle capacity, temperature, and molten steel static pressure. This optimizes the air brick's blowing performance, extends its service life, and ensures stable safety.
The temperature gradient between the working surface and the permanent layer, where the molten steel contacts, creates thermal stress in the air brick's slit structure, increasing the width of the slits. Molten steel during the smelting process can flow into the slits, reducing gas flow and ultimately leading to complete blockage. When the number and length of slits in the air brick are constant, optimally designed placement of the air bricks ensures rapid stirring of the molten steel during smelting, thereby improving the uniformity of its composition and temperature.
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