The steel ladle is a key piece of equipment used for holding, transporting, and pouring high-temperature molten steel in the steelmaking process. It plays an important role in both steelmaking and continuous casting operations.
The refractory used in steel ladles need to operate under harsh conditions, including high temperatures, erosion from molten steel, slag corrosion, and frequent temperature changes. Therefore, the performance requirements for these materials are extremely high. Typically, the working layer uses magnesia-carbon bricks, while the permanent layer employs castables. Some steel ladles also have an insulating layer, which is made of calcium silicate boards or nano-insulation boards.