DEVICE FOR CONTROLLING THE DISCHARGING HEIGHT OF FINE PARTICLES IN FLUIDIZED BED REACTOR

摘要

The present invention is improved to be easily control the reduction rate of the ore by adjusting the ore discharge height to be adjusted for the residence time in the fluidized bed when the ore in each fluidized-bed reactor in a process for producing molten iron by using a fluidized-bed reactor to the discharge minute relate to iron ore discharge position control apparatus to the fluidized-bed reactors.; The present invention fine iron ores are charged, evenly to the reducing gas introduced to form a discharged ore charged, discharge tube 13 (15), the gas introduced is a reducing gas is introduced, discharged, the discharge pipe 11, 12 and the fluid bed equipped with a distribution plate 14 for dispersion in the fluidized-bed reduction reactor 10 for producing a molten iron, can be from an inlet end of the ore discharge pipe 15 which protrudes into the 10 into the fluidized-bed reactors a predetermined height vertically extending straight pipe ( 21) within a feature, the standpipe 21 has Lee Dong - kwan 22 of predetermined length so as to be movable up and down, and the assembly, the Lee Dong - kwan 22 ore inlet networks (23, the upper part comprising the inlet of the reducing reaction of ore) is mounted, by rotating the top surface and one end of the drum 26 wound around the steel wire 24 is connected to the ore inlet network 23 in a forward or reverse the ore inlet network 23 is the height of the Lee Dong - kwan 22 minutes in the fluidized-bed reactors that make up equipped with a motor member 25 for controlling iron ore It provides an output position control device.