The refractory lining of molten iron ladle is generally built in three layers, including thermal insulation layer, permanent layer and working layer

1. The hot metal ladle insulation layer is close to the shell steel plate. In order to reduce the heat loss of molten steel, reduce the temperature of hot water and prevent the temperature of molten steel from falling, it is necessary to reduce the heat transfer from the wall to the outside. In order to reduce the thermal conductivity of the lining wall, an insulating layer is usually placed between the permanent layer of the ladle and the cladding
2. The function of the permanent layer of the molten iron ladle is to prevent the local erosion or erosion of the very thin thickness of the working layer of the refractory material of the metal shell during the combustion of the molten steel leakage, and to maximize the working layer of the metal shell ladle lining to extend the service life. The service life of the ladle improves the use safety and reduces the consumption of refractory materials
3. The refractory material of the working layer of the ladle is in direct contact with the molten steel and steel slag, and bears the mechanical erosion and thermochemical erosion of the molten steel and steel slag. Working layer is the most important layer in ladle lining. The service life of the ladle depends on the degree of mechanical and chemical corrosion of the working layer refractory layer, masonry material layer, molten steel layer and molten steel layer. Attention must be paid to material selection and masonry