JPS55148706A - Blast furnace operating method - Google Patents
Blast furnace operating methodInfo
- Publication number
- JPS55148706A JPS55148706A JP5603779A JP5603779A JPS55148706A JP S55148706 A JPS55148706 A JP S55148706A JP 5603779 A JP5603779 A JP 5603779A JP 5603779 A JP5603779 A JP 5603779A JP S55148706 A JPS55148706 A JP S55148706A
- Authority
- JP
- Japan
- Prior art keywords
- stove
- temperature
- blowing
- fuel
- heat accumulation
- 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
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/14—Preheating the combustion air
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Iron (AREA)
Abstract
PURPOSE:To reduce the fuel ratio, by blowing air above a specified temperature, and blowing the fuel so as to maintain the tuyere end temperature above a specified temperature. CONSTITUTION:In a blast furnace operated by blowing fuel such as fuel oil, tar, Co gas and CO2 gas from tuyere end and removing moisture content from blast at the same time, air is blown at 1350 deg.C, and the furnace is operated at the fuel blowing rate enough to maintain the tuyere end temperature above 2500 deg.C. To supply hot air above 1350 deg.C, in each hot stove system of parallel hot stove operation, the preceding stove (low humidity stove) of parallel operation is always ventilated at full opening and succeeding stove (high temperature stove) is ventilaged at regulated temperature when operating the furnace by successively changing over by two- stove parallel blowing of unmixed cold air, and the combustion exhaust gas temperature is controlled, and the heat accumulation of all stoves is controlled by the exhaust gas temperature by heat accumulation division, so that the amount of heat accumulation in all stoves may be set uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5603779A JPS55148706A (en) | 1979-05-08 | 1979-05-08 | Blast furnace operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5603779A JPS55148706A (en) | 1979-05-08 | 1979-05-08 | Blast furnace operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55148706A true JPS55148706A (en) | 1980-11-19 |
Family
ID=13015873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5603779A Pending JPS55148706A (en) | 1979-05-08 | 1979-05-08 | Blast furnace operating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55148706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018168416A (en) * | 2017-03-29 | 2018-11-01 | 新日鐵住金株式会社 | Blast furnace operation method |
-
1979
- 1979-05-08 JP JP5603779A patent/JPS55148706A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018168416A (en) * | 2017-03-29 | 2018-11-01 | 新日鐵住金株式会社 | Blast furnace operation method |
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