To provide a simple, practical, and effective method of reusing wet dust present in a material generated in a blast furnace, for effectively using wet dust collected from exhaust gas of an iron-making blast furnace, which method comprises separating the wet dust into three portions, i.e., a portion comprising iron (Fe) as a useful object, a portion comprising carbon (C) as a useful object, and a portion comprising zinc (Zn) as a useful object.
The wet dust is converted into a slurry state, and the resulting slurry is subjected to two steps 15, 16 of wet cyclone separation, and the effluent from the lower part of the second step cyclone is subjected to wet magnetic separation 17, whereby the wet dust is separated into three portions, i.e., a portion comprising iron (Fe) as a useful object, a portion comprising carbon (C) as a useful object, and a portion comprising zinc (Zn) as a useful object.
KAMIKAWA YOSHIHIRO
ODA HIROSHI
HIROMATSU TAKASHI
NIPPON STEEL & SUMITOMO METAL CORP
Yoshihiro Kurita
Takayuki Imanaka