ROTARY HEARTH FURNACE AND ITS OPERATING METHOD

摘要

When iron ore is reduced by repeating a series of operations including feeding a raw material consisting of the iron ore and a solid reducing material to a movable hearth furnace having a hearth moving in one direction, placing the raw material on the hearth and thereafter conducting pre-heating, reducing and discharging, the material supplied into the movable hearth furnace is pre-heated by utilizing heat of the reduced ore after the reducing treatment, and the raw material ore is placed on the movable hearth in succession to this pre-heating.