| 摘要 |
PROBLEM TO BE SOLVED: To provide a refractory lining structure of a torpedo car achieving both adiabaticity and corrosion resistance.SOLUTION: A refractory lining structure of a torpedo car is for receiving and holding molten iron tapped from a blast furnace, and performing dephosphorization treatment to the molten iron held, and includes, in order from the outer side of a furnace body of the torpedo car, an iron shell, a heat insulating material, a permanent refractory layer and a workpiece refractory layer. The thermal conductivity of the heat insulating material is 0.1 W/(m×K) or less, and the thermal conductivity of the workpiece refractory composing the workpiece refractory is 12 W/(m×K) or less. As the workpiece refractory, a shaped refractory with a carbon content of 10-12 mass% is used at a portion that comes in contact with the molten iron held and a shaped refractory with a carbon content of 8-10 mass% is used at a portion that comes in contact with the slug existing on the surface of the molten iron. |
