JPS648211A - Method for pretreating molten iron - Google Patents
Method for pretreating molten ironInfo
- Publication number
- JPS648211A JPS648211A JP16418987A JP16418987A JPS648211A JP S648211 A JPS648211 A JP S648211A JP 16418987 A JP16418987 A JP 16418987A JP 16418987 A JP16418987 A JP 16418987A JP S648211 A JPS648211 A JP S648211A
- Authority
- JP
- Japan
- Prior art keywords
- molten iron
- slag
- trough
- molten
- air
- 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
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE:To improve efficiency of refining reaction in a molten iron trough by blowing gas into molten iron and slag before separating and removing the produced molten slag from the molten iron at the time of pretreating the molten iron in the molten iron trough on casting bed of a blast furnace to again mix the molten slag and the molten iron. CONSTITUTION:A lance 4 for injection is vertically submerged into the molten iron 2 in the molten iron trough 1 and desiliconizing agent 12 is injected into the molten iron 2 from plural nozzles 4a at tip of the lance 4 with carrier gas. By this method, the slag 3 produced by desiliconized reaction is floated up on the molten iron 2 in the molten iron trough 1 partitioned with a dipped weir 6. Before separating and removing this slag 3 from the molten iron 2, after air-cooling the molten iron trough 1, high temp. air exhausting from a molten iron air cooling piping 5 is introduced to a gas blowing pipe 8 through pipe l1 and blown on the slag surface from tip thereof. By this method, the desiliconizing agent 12, which is not yet reacted in the desiliconized slag 3, is reacted by stirring and mixing with the molten iron 2, to promote desiliconizing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16418987A JPS648211A (en) | 1987-07-01 | 1987-07-01 | Method for pretreating molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16418987A JPS648211A (en) | 1987-07-01 | 1987-07-01 | Method for pretreating molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS648211A true JPS648211A (en) | 1989-01-12 |
Family
ID=15788379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16418987A Pending JPS648211A (en) | 1987-07-01 | 1987-07-01 | Method for pretreating molten iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS648211A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5177536A (en) * | 1989-03-31 | 1993-01-05 | Canon Kabushiki Kaisha | Developing apparatus having a magnetic seal |
| US5267007A (en) * | 1989-08-04 | 1993-11-30 | Canon Kk | Magnetic seal for preventing developer from leaking out of the longitudinal ends of a rotatable member |
| US5287148A (en) * | 1990-07-10 | 1994-02-15 | Canon Kabushiki Kaisha | Magnetic seal for a developing apparatus |
-
1987
- 1987-07-01 JP JP16418987A patent/JPS648211A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5177536A (en) * | 1989-03-31 | 1993-01-05 | Canon Kabushiki Kaisha | Developing apparatus having a magnetic seal |
| US5267007A (en) * | 1989-08-04 | 1993-11-30 | Canon Kk | Magnetic seal for preventing developer from leaking out of the longitudinal ends of a rotatable member |
| US5287148A (en) * | 1990-07-10 | 1994-02-15 | Canon Kabushiki Kaisha | Magnetic seal for a developing apparatus |
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