JPS5629601A - Operation of blast furnace - Google Patents
Operation of blast furnaceInfo
- Publication number
- JPS5629601A JPS5629601A JP10485479A JP10485479A JPS5629601A JP S5629601 A JPS5629601 A JP S5629601A JP 10485479 A JP10485479 A JP 10485479A JP 10485479 A JP10485479 A JP 10485479A JP S5629601 A JPS5629601 A JP S5629601A
- Authority
- JP
- Japan
- Prior art keywords
- blast furnace
- raw materials
- powdery raw
- tuyere
- furnace
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
- C21B5/023—Injection of the additives into the melting part
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
PURPOSE:To eliminate the needs for pelletizing powdery raw materials, simplify the operation of blast furnace, and reduce the operation cost by an operating method in which powdery raw materials obtained from a pig iron-making process are pneumatically sent from the tuyere of blast furnace into the furnace by using combustion air. CONSTITUTION:Dust, or powdery iron ore and coke, obtained through a dust remover 10 and a dust collector 11 from top gas discharge stage of the blast furnace 1 as a pig iron-making process is blown into a blow pipe 4 through a blasting nozzle 7 from a storage part 13 and then charged into the furnace 5 through the tuyere 6 by utilizing combustion air supplied through an annular air supply pipe 2 and an air blowing branch pipe 3 as a carrier gas. Then, the blast furnace 1 is operated. Thus, a processing treatment process to make the powdery raw materials lumps can be eliminated, the anomalous rise of temperature at the tip of tuyere due to an endothermic reaction caused by iron oxide present in the powdery raw materials can be prevented, and the coke ratio can be reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10485479A JPS5629601A (en) | 1979-08-17 | 1979-08-17 | Operation of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10485479A JPS5629601A (en) | 1979-08-17 | 1979-08-17 | Operation of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5629601A true JPS5629601A (en) | 1981-03-25 |
Family
ID=14391857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10485479A Pending JPS5629601A (en) | 1979-08-17 | 1979-08-17 | Operation of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5629601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570272A (en) * | 1983-08-11 | 1986-02-18 | Matsushita Electric Works, Ltd. | Toilet bowl flushing device |
-
1979
- 1979-08-17 JP JP10485479A patent/JPS5629601A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570272A (en) * | 1983-08-11 | 1986-02-18 | Matsushita Electric Works, Ltd. | Toilet bowl flushing device |
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