JPS56123305A - Operating method for blast furnace - Google Patents
Operating method for blast furnaceInfo
- Publication number
- JPS56123305A JPS56123305A JP2446480A JP2446480A JPS56123305A JP S56123305 A JPS56123305 A JP S56123305A JP 2446480 A JP2446480 A JP 2446480A JP 2446480 A JP2446480 A JP 2446480A JP S56123305 A JPS56123305 A JP S56123305A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- furnace
- melt
- furnace wall
- infurnace
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/006—Automatically controlling the process
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 improve productivity and lower the cost of iron making without accompanying the increase in fuel cost by specifying the temp. at tuyere ends and further specifying the relation between the furnace wall temp. loaded from the root part of the infurnace melt-stuck matter and the max. temp. of the furnace wall in the upper part. CONSTITUTION:In blast furnace operation, the temp. at tuyere ends is kept at >=2,500 deg.C, and the infurnace constitution of (charged iron and steel ore + charged sintered one) weight O/charged coke weight C is controlled to furnace center part > furnace wall part. Thereby, the ventilation resistance in the furnace center part is increased and the lengthening of the melt-stuck zone toward the upper place is prevented. Further, the relation between the furnace wall temp. D loaded from the root part of the infurnace melt-stuck matter and the maximum temp. of the furnace wall S in the upper part is so controlled as to assume S/D<=1. If these conditions are maintained, the shape of the melt-stuck matter stabilizes and the furnace is operated at low fuel costs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2446480A JPS56123305A (en) | 1980-02-28 | 1980-02-28 | Operating method for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2446480A JPS56123305A (en) | 1980-02-28 | 1980-02-28 | Operating method for blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56123305A true JPS56123305A (en) | 1981-09-28 |
| JPS6157363B2 JPS6157363B2 (en) | 1986-12-06 |
Family
ID=12138881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2446480A Granted JPS56123305A (en) | 1980-02-28 | 1980-02-28 | Operating method for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56123305A (en) |
-
1980
- 1980-02-28 JP JP2446480A patent/JPS56123305A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6157363B2 (en) | 1986-12-06 |
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