OPERATION METHOD FOR ROTARY HEARTH TYPE REDUCTION FURNACE

摘要

PROBLEM TO BE SOLVED: To provide a method for operating a rotary hearth furnace for producing reduced metals capable of preventing or reducing wear of the blade tip of a screw in a discharge apparatus to enable the long term continuous operation and attaining a high operation rate by removing a substance stuck to the surface of a hearth therefrom using a simple method. SOLUTION: This simple method for removing the stuck substance comprises quickly cooling the surface of the hearth by water spray, or the like, generating cracks in the substance stuck to the surface of the hearth and scraping off the stuck substance.