JPS55113811A - Blast furnace operation method - Google Patents
Blast furnace operation methodInfo
- Publication number
- JPS55113811A JPS55113811A JP2057679A JP2057679A JPS55113811A JP S55113811 A JPS55113811 A JP S55113811A JP 2057679 A JP2057679 A JP 2057679A JP 2057679 A JP2057679 A JP 2057679A JP S55113811 A JPS55113811 A JP S55113811A
- Authority
- JP
- Japan
- Prior art keywords
- furnace
- blast furnace
- distribution
- radial direction
- change
- 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
- C21B5/006—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 maintain gas glow distribution adequately and secure the blast furnace operation stably and efficiently by controlling the change of the in-furnace gas composition in the furnace radial direction and the change index of the gas composition measured value at the furnace wall side 4/5 in the radial direction to the respectively specified ranges. CONSTITUTION:In the blast furnace operation by which the distribution of the piling ratio of ores and coke is adequately maintained, the charge amount of raw materials, the height of descending materials, the charging order, the grain size distribution of descending materials, etc. are suitably changed and adjusted to provide such a gas flow distribution in which the change of the in-furnace gas composition in the furance radial direction in the shaft upper part is kept within ratio of CO%/ CO2% (CGI); 1.8<=CGI<=2.5 and the change index (RGI) of the CO%/CO2% measured values at the plural points in the range of the furnace wall 4/5 in the radiation direction within the range of 0.04<=RGI<=0.12. In this way, the operation is accomplished stably and efficiently even in the large-size blast furnace of a large diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2057679A JPS55113811A (en) | 1979-02-23 | 1979-02-23 | Blast furnace operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2057679A JPS55113811A (en) | 1979-02-23 | 1979-02-23 | Blast furnace operation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55113811A true JPS55113811A (en) | 1980-09-02 |
Family
ID=12031022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2057679A Pending JPS55113811A (en) | 1979-02-23 | 1979-02-23 | Blast furnace operation method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55113811A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742850A (en) * | 1980-08-28 | 1982-03-10 | Sekisui Chem Co Ltd | Composition for separation of serum or plasma |
| JPS5835464A (en) * | 1981-08-27 | 1983-03-02 | Sekisui Chem Co Ltd | Composition for separating serum or plasma |
-
1979
- 1979-02-23 JP JP2057679A patent/JPS55113811A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5742850A (en) * | 1980-08-28 | 1982-03-10 | Sekisui Chem Co Ltd | Composition for separation of serum or plasma |
| JPS5835464A (en) * | 1981-08-27 | 1983-03-02 | Sekisui Chem Co Ltd | Composition for separating serum or plasma |
| JPH0126501B2 (en) * | 1981-08-27 | 1989-05-24 | Sekisui Chemical Co Ltd |
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