To provide a preliminarily reducing furnace for preventing the clogging of a dispersion plate nozzle and conducting the continuous operation by holding the temp. in a fluidized bed for preliminary reduction to a desired temp. without raising the inlet gas temp.
This furnace is provided with a preliminary reduction chamber 2 positioned on the upper side of the furnace main body partitioned into the upper and the lower parts with the dispersion plate 7 and forming the fluidized bed 10, a wind-box 9 positioned on the lower side of the furnace main body and flowing a reducing gas into the fluidized bed through the dispersion plate 7, an ore supplying pipe 11 and an ore ejecting pipe 12 fitted to the chamber 2 and oxygen blowing pipe 13 for blowing the gas containing the oxygen into the fluidized bed.
WATABE MASAYUKI
YAMANAKA MITSUHIRO
SEKIGUCHI TAKESHI
TAGUCHI NORIHIKO
KAWAKAMI MASAHIRO
IWASAKI KATSUHIRO
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