The ladle is a key equipment for holding and transferring molten steel during the steelmaking process. Its lining consists of three layers: the insulation layer, the permanent layer, and the working layer, and different refractory bricks are selected for different parts.
1.Insulation Layer
Close to the ladle shell, its core function is heat insulation. Refractory fiber boards, light insulation bricks and low thermal conductivity insulation castables are commonly used to reduce heat loss and protect the ladle shell.
2. Permanent Layer
It plays a role of support and safety protection. High alumina bricks, high alumina castables and mullite castables are commonly used, which have stable structure and strong sealing performance.
3. Working Layer
Direct contact with molten steel and slag, serving as key load-bearing parts:
• The slag line area uses magnesia carbon bricks and low-carbon magnesia carbon bricks, which exhibit excellent resistance to slag erosion and thermal shock;
• The wall and bottom are use alumina magnesia carbon bricks, magnesia alumina spinel castables, and alumina magnesia castables, which are resistant to erosion and have a long service life;
• Functional components such as porous plugs and nozzle bricks are made of corundum, alumina-carbon, and zirconia-carbon refractory materials to ensure flow control and operational stability.
Huaxiang Refractories specializes in the R&D and production of ladle refractory bricks. Our products have excellent slag resistance, erosion resistance and long service life, which are suitable for various smelting conditions. They can effectively improve the service life of ladles, reduce production costs, and ensure the continuous, safe and efficient operation of steelmaking production.
