JPS54155917A - Fluidized bed reducing apparatus for iron ore - Google Patents
Fluidized bed reducing apparatus for iron oreInfo
- Publication number
- JPS54155917A JPS54155917A JP6431578A JP6431578A JPS54155917A JP S54155917 A JPS54155917 A JP S54155917A JP 6431578 A JP6431578 A JP 6431578A JP 6431578 A JP6431578 A JP 6431578A JP S54155917 A JPS54155917 A JP S54155917A
- Authority
- JP
- Japan
- Prior art keywords
- ore
- fluidized bed
- iron ore
- gas
- fine iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Manufacture Of Iron (AREA)
Abstract
PURPOSE: To improve the ore reducing power of the title and apparatus enhance the reduced iron productivity per unit area of the fluidized bed by supplying fine iron ore heated to a high temp. to the long trough-shaped fluidized bed and by blowing a hot reducing gas from the bed bottom to form a reducing fluidized layer.
CONSTITUTION: Fine iron ore (a) preheated to above 500°C and roasted is charged into raw material hopper 1 and supplied to fluidized bed 3 with feeder 2 at a constant rate. On the other hand, reducing gas (d) based on CO and H2 is heated to above 500°C, fed to small chambers 10 through introduction pipe 7 and branch pipes 8, and blown upward from many small holes of porous plate 11. Fine iron ore (b) forms a fluidized layer together with gas (d) and moves to the left side while being reduced with the gas. The ore enters collecting hopper 5 over overflow weir 4 and is taken out as reduced iron (c) with discharger 6. The residence time of fine iron ore in the fluidized bed chamber is constant, the ore well contacts to the reducing gas, and reduced iron of high reduction ratio is manufactured efficiently.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6431578A JPS54155917A (en) | 1978-05-31 | 1978-05-31 | Fluidized bed reducing apparatus for iron ore |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6431578A JPS54155917A (en) | 1978-05-31 | 1978-05-31 | Fluidized bed reducing apparatus for iron ore |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54155917A true JPS54155917A (en) | 1979-12-08 |
Family
ID=13254671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6431578A Pending JPS54155917A (en) | 1978-05-31 | 1978-05-31 | Fluidized bed reducing apparatus for iron ore |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54155917A (en) |
-
1978
- 1978-05-31 JP JP6431578A patent/JPS54155917A/en active Pending
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