Verfahren und Vorrichtung für die Zuführung von körnigem Rohstoff zum Herstellen von reduziertem Eisen

摘要

Disclosed is a method for supplying a granular raw material for reduced iron in which when the granular raw material for reduced iron is fed into a hopper (11) and from there supplied onto a hearth (3a) of a movable hearth furnace (3) through a material supplying device (10), the material supplying device is moved vertically to thereby adjust the gap (T) between the lower end of the material supplying device (13) and the hearth (3a), whereby it is possible to adjust with high accuracy the amount of granular raw material for reduced iron supplied onto the hearth (3a) of the movable hearth furnace (3). Further, disclosed are a method and an apparatus for leveling a granular raw material for reduced iron in which a spiral vane (20) is rotated on the downstream side with respect to a hearth moving direction of a material discharge outlet of a material supplying device (10) for supplying the granular raw material for reduced iron onto a hearth of a movable hearth furnace through the material supplying means (10) to thereby move the granular raw material for reduced iron in the hearth width direction to disperse it, whereby it is possible to disperse and level the granular raw material for reduced iron over the entire surface of the hearth (3a) of the movable hearth furnace without breakage or pulverization of the granular raw material for reduced iron.