METHOD OF PREHEATING STEELMAKING LADLES

摘要

A method for when preheating a ladle for use in steelmaking where less fuel is consumed in heating the ladle efficiently accurately to a controlled temperature. A temperature of a preheating process is varied by controlling a burner of the heating unit based on measurements of refractories of the ladle taken by a pyrometer. The heating unit includes an emissive coating for reducing heat loss and efficient heating during the preheating process. The heating unit also includes valve mechanisms for accurately varying a flame size of the burner of the heating unit during an idle stage of the preheating process.