JPS55154510A - Operating method for hot stove of blast furnace - Google Patents
Operating method for hot stove of blast furnaceInfo
- Publication number
- JPS55154510A JPS55154510A JP6050079A JP6050079A JPS55154510A JP S55154510 A JPS55154510 A JP S55154510A JP 6050079 A JP6050079 A JP 6050079A JP 6050079 A JP6050079 A JP 6050079A JP S55154510 A JPS55154510 A JP S55154510A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- hot stove
- control valve
- blast
- flow rate
- 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
- Manufacture Of Iron (AREA)
Abstract
PURPOSE: To increase the thermal efficiency of a blast furnace, by controlling the operation of a hot stove so that the flow rate control valve may be closed when the temp. of the hot stove dome is lowered to a temp. prescribed degree lower than the set temp. of the blast.
CONSTITUTION: When, for example, four hot stoves for blasting a blast furnace are operated in parallel, blasting A and combustion B are repeated alternately. The open control OC for opening a flow rate control valve and the close control CC for closing the control valve are adjusted in order to make the blast temp. constant. In practice, however, the flow rate control valve is opened or closed in earlier stage and the heat in the hot stove is not fully utilized, consequently the temp. of the exhaust gas is not kept constant. Hence, when the dome temp. of a preceding hot stove having blasted the blast furnace is lowered to a temp. prescribed degrees lower than the set temp. of the blast, the flow rate control valve at the gas inlet is controlled so as to be closed. Hereby, the unbalance of heat quantity held by each hot stove is removed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6050079A JPS55154510A (en) | 1979-05-18 | 1979-05-18 | Operating method for hot stove of blast furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6050079A JPS55154510A (en) | 1979-05-18 | 1979-05-18 | Operating method for hot stove of blast furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55154510A true JPS55154510A (en) | 1980-12-02 |
Family
ID=13144081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6050079A Pending JPS55154510A (en) | 1979-05-18 | 1979-05-18 | Operating method for hot stove of blast furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55154510A (en) |
-
1979
- 1979-05-18 JP JP6050079A patent/JPS55154510A/en active Pending
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