JPS56112426A - Treatment of exhaust gas in exhaust gas circulating type sintering - Google Patents
Treatment of exhaust gas in exhaust gas circulating type sinteringInfo
- Publication number
- JPS56112426A JPS56112426A JP1535180A JP1535180A JPS56112426A JP S56112426 A JPS56112426 A JP S56112426A JP 1535180 A JP1535180 A JP 1535180A JP 1535180 A JP1535180 A JP 1535180A JP S56112426 A JPS56112426 A JP S56112426A
- Authority
- JP
- Japan
- Prior art keywords
- sintering
- zone
- exhaust gas
- lime
- unslagged
- 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
- Treating Waste Gases (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To treat the titled exhaust gas without requiring desulfurizing equipment by adjusting the amount of limestone powder blended in starting materials for sintering and allowing unslagged lime in a region of a sintering zone to capture and fix SOx.
CONSTITUTION: Blended starting material 1 for sintering consisting of fine iron ore, 8W20wt% limestone powder, coke breeze and a little water is charged into the pallet and fired with firing furnace 3. Sintering progresses while leaving wet unsintered zone 6 at the lower part in the early stage of firing, burning zone 7 and sintering zone 8 and slowly extended, and sintering is completed at the right end of the pallet. Unslagged lime (free lime) remains in sintered ore 8 in the form of quick lime even after passing through zone 7. Accordingly, exhaust gas of high SOx concn. from latter half part VIWIX of wind boxes 4 is fed through hood 10 to allow unslagged lime in 800W1,000°C region 9 of zone 8 to capture and fix SOx. Thus, the SOx content of exhaust gas exhausted from first half part IWV of boxes 4 into chimney 5 is reduced to ≤20%, resulting in ≥80% desulfurizing rate due to sintered ore 8.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1535180A JPS56112426A (en) | 1980-02-09 | 1980-02-09 | Treatment of exhaust gas in exhaust gas circulating type sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1535180A JPS56112426A (en) | 1980-02-09 | 1980-02-09 | Treatment of exhaust gas in exhaust gas circulating type sintering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56112426A true JPS56112426A (en) | 1981-09-04 |
Family
ID=11886368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1535180A Pending JPS56112426A (en) | 1980-02-09 | 1980-02-09 | Treatment of exhaust gas in exhaust gas circulating type sintering |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56112426A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782434A (en) * | 1980-11-12 | 1982-05-22 | Nippon Steel Corp | Treatment of waste gas in waste gas circulating system sintering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5275602A (en) * | 1975-12-19 | 1977-06-24 | Hitachi Zosen Corp | Waste gas-circulating type positive pressure sintering process |
| JPS543442A (en) * | 1977-06-10 | 1979-01-11 | Hitachi Ltd | Abnormality detection system for logic element |
-
1980
- 1980-02-09 JP JP1535180A patent/JPS56112426A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5275602A (en) * | 1975-12-19 | 1977-06-24 | Hitachi Zosen Corp | Waste gas-circulating type positive pressure sintering process |
| JPS543442A (en) * | 1977-06-10 | 1979-01-11 | Hitachi Ltd | Abnormality detection system for logic element |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5782434A (en) * | 1980-11-12 | 1982-05-22 | Nippon Steel Corp | Treatment of waste gas in waste gas circulating system sintering |
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