To suppress a temperature rise of a refractory during ladle preheating and to effectively prevent an occurrence of a crack or a partial crack of the refractory by providing a shell to become a base material, the refractory lined on the shell, and a cooling metal tube embedded in the refractory.

A shell 2 of the ceiling cover 1 is molded in a disc-like state. Then, a burner mounting hole is perforated at a center of the shell 2, an exhaust hole is perforated at its outer periphery and a piping mounting hole is perforated at its intermediate part. A refractory 3 is formed, for example, of a plastic refractory, and lined on the shell except the respective hole parts. Further, a cooling metal tube 4 is formed, for example, of a stainless steel tube, embedded in the refractory 3, and held by a hanging fitting mounted at the shell 2. Meanwhile, an anchor hardware 6 is formed of an oxidation resistant material, brought at its one end into contact with the tube 4, and embedded in the refractory 3. Thus, in the case of preheating a ladle, the refractory 3 is effectively cooled by the tube 4 and the hardware 6.