| 摘要 |
PURPOSE: A reduction method of iron oxides and a circulating fluidized reduction apparatus for the same are provided to restore the iron oxides which is in the oversupply situation to the zero-valent iron which is useful environment material by using the iron oxides generated from the iron mill. CONSTITUTION: The circulating fluidized reduction apparatus(10) includes a reactor, a heating unit, and a supply unit(70). The reactor causes the reduction reaction by liquidating of the iron oxides. The heating unit heats the reactor. The gas supply unit supplies the transfer gas for fluidizing the iron oxides and the reduction gas for changing to the zero-valent iron. The reactor is parallely arranged and includes the ascending pipe(20) and descending pipe(25). The reactor includes the cyclone(30), the gas exhausting tube, the filtration membrane(53) and water trap(57). The cyclone is installed on the upper part of the descending pipe, discharges the gas to the upper part and recirculates the iron oxides particle. The gas exhausting tube is connected to the vacuum pump by being extended from the upper part of the cyclone. The filtration membrane filter is installed in the gas exhausting tube and filters iron oxides. The water trap is installed between the filtration membrane and vacuum pump. |
