CN203683578U - Bottom blowing device of ladle refining furnace - Google Patents
Bottom blowing device of ladle refining furnace Download PDFInfo
- Publication number
- CN203683578U CN203683578U CN201320876007.0U CN201320876007U CN203683578U CN 203683578 U CN203683578 U CN 203683578U CN 201320876007 U CN201320876007 U CN 201320876007U CN 203683578 U CN203683578 U CN 203683578U
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- CN
- China
- Prior art keywords
- gas
- carbon dioxide
- refining furnace
- ladle refining
- blowing device
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- 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.)
- Expired - Fee Related
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a bottom blowing device of a ladle refining furnace. The device comprises the ladle refining furnace, an air brick and a carbon dioxide gas bag, wherein the air brick is positioned at the bottom of the ladle refining furnace; the air inlet end of the carbon dioxide gas bag is connected with a gas manufacturing station through a pipeline, and the air outlet end of the carbon dioxide gas bag is connected with the air brick; an air blower is also connected between the carbon dioxide gas bag and the air brick to ensure that the blown-out carbon dioxide gas is more uniform. According to the bottom blowing device disclosed by the utility model, the carbon dioxide replaces argon and is blown into a ladle, so that the cost of a refining process is reduced, the economic benefit of steel plants is improved, and the quality of molten steel is improved at the same time; the air blower is arranged on the bottom blowing device to ensure the gas pressure, and ensure that the molten steel flows normally during smelting.
Description
Technical field
The utility model belongs to steel melting furnace refinery practice device, is specifically related to a kind of ladle refining furnace bottom-blowing device.
Background technology
At present, the Main Function of ladle refining furnace is that submerged arc heats molten steel heating, the even molten steel composition of Bottom Argon Stirring and temperature, make white slag desulfurization and remove gas and the inclusion in molten steel, molten steel is carried out to alloy fine setting etc., these functions all have much relations with Bottom Argon Stirring, so starting BOTTOM ARGON BLOWING from refining carries out always, because argon gas is rare gas, price comparison costliness, increase to a great extent steel-making cost, in the general stagnant situation of steel industry, we need to seek process for making more cheaply, find the lower gaseous media of price as power, molten steel is stirred.
Finding gaseous media cheaply has become reduction process for making cost, improves the important means of steelworks economic benefit.
Utility model content
The technical problem that the utility model is intended to solve is: the ladle refining furnace bottom-blowing device of a kind of low cost, energy-saving and environmental protection is provided, thereby improves steelworks economic benefit.
For achieving the above object, the technical solution of the utility model is: a kind of ladle refining furnace bottom-blowing device, comprise ladle refining furnace, gas permeable brick, carbonic acid gas gas bag, gas permeable brick is positioned at the bottom of ladle refining furnace, carbonic acid gas gas bag inlet end connects gas processed station by pipeline, and carbon dioxide gas bag outlet side is connected with gas permeable brick.
Also comprise blower, carbon dioxide gas bag outlet side connects blower inlet end by pipeline, and blower outlet side connects gas permeable brick by pipeline.
On the connecting tube of carbon dioxide gas bag outlet side and blower inlet end, be equiped with valve and under meter; On the connecting tube of blower outlet side and gas permeable brick, be equiped with valve.
The utility model, by adding carbonic acid gas gas bag at ladle refining furnace bottom, changes bottom blown gas into carbon dioxide by argon gas, and 1, reduced the cost of refinery practice; 2, simultaneously because carbonic acid gas has high temperature oxidation stability, carry out bottom blowing carbon dioxide in process can with molten steel in Partial Elements generation chemical reaction, resultant and excess reactant do not affect and can improve on the contrary steel quality steel quality; 3, because carbonic acid gas density is that 1.5 times of its covering protections of air are effective; so can exist in the time that carbonic acid gas floats up to surface from molten steel and slag upper surface; be equivalent to a kind of shielding gas and be present in edge on ladle, can avoid to a great extent secondary oxidation of steel.
Simultaneously blower be arranged so that the carbonic acid gas blowing to ladle the inside is more even, the flow of carbon dioxide gas amount that simultaneously makes to be blown into ladle is controlled, has avoided gas waste, has also improved bottom blowing quality simultaneously.
Brief description of the drawings
Fig. 1 is ladle refining furnace bottom-blowing device structural representation described in the utility model.
Embodiment
As Fig. 1, a kind of ladle refining furnace bottom-blowing device, comprises refining furnace 1, gas permeable brick 2, blower 4 and carbonic acid gas gas bag 6.
Gas permeable brick 2 is positioned at the bottom of refining furnace 1, can blow to the ladle of refining furnace 1 inside by gas permeable brick 2; Two pipelines of carbonic acid gas gas bag 6 outlet side branch are connected to two interfaces of blower 6 inlet ends, on the pipeline connecting at both, be provided with valve 3 and under meter 5, valve 3 can be controlled the switching of corresponding pipeline, under meter 5 can be monitored the flow of the gas that enters blower 4, thereby regulate blower according to actual demand in ladle, make to be blown into gas in the ladle of refining furnace 1 and meet demand and ensure that flowing of molten steel is normal.The inlet end of carbonic acid gas gas bag 6 connects gas processed station, and gas processed station can provide carbonic acid gas for technique.
Two interfaces of the outlet side of blower 4 are respectively by being connected to gas permeable brick 2 with the pipeline of valve 3, by valve 3 being set on both connected pipelines, can occur when abnormal to close in time corresponding valve at equipment, initiate emergency plan, thus prevent the waste of carbon dioxide.
Gas processed station is sent into carbonic acid gas gas bag 6 by carbon dioxide by pipeline, the outlet side of carbonic acid gas gas bag 6 is branched off into two device for cleaning pipelines and crosses these two pipelines carbon dioxide is inputted to blower 4, demand according to ladle to carbonic acid gas, and meter readings on pipeline regulates blower 4 to make the gas blowing out meet process requirements, be connected to gas permeable brick 2 by blower 4 outlet sides gas out by pipeline, the ladle that carbon dioxide enters refining furnace 1 inside by gas permeable brick 2 stirs molten steel.
Ladle refining furnace bottom-blowing device described in the utility model, blows by argon gas transposition carbonic acid gas original by set up carbonic acid gas gas bag in device, has reduced process costs, has improved steel quality.
Claims (3)
1. a ladle refining furnace bottom-blowing device, comprise ladle refining furnace, gas permeable brick, it is characterized in that: also comprise carbonic acid gas gas bag, gas permeable brick is positioned at the bottom of ladle refining furnace, carbonic acid gas gas bag inlet end connects gas processed station by pipeline, and carbon dioxide gas bag outlet side is connected with gas permeable brick.
2. a kind of ladle refining furnace bottom-blowing device as claimed in claim 1, is characterized in that: also comprise blower, carbon dioxide gas bag outlet side connects blower inlet end by pipeline, and blower outlet side connects gas permeable brick by pipeline.
3. a kind of ladle refining furnace bottom-blowing device as claimed in claim 1 or 2, is characterized in that: on the connecting tube of carbon dioxide gas bag outlet side and blower inlet end, be equiped with valve and under meter; On the connecting tube of blower outlet side and gas permeable brick, be equiped with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876007.0U CN203683578U (en) | 2013-12-30 | 2013-12-30 | Bottom blowing device of ladle refining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876007.0U CN203683578U (en) | 2013-12-30 | 2013-12-30 | Bottom blowing device of ladle refining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203683578U true CN203683578U (en) | 2014-07-02 |
Family
ID=51005503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320876007.0U Expired - Fee Related CN203683578U (en) | 2013-12-30 | 2013-12-30 | Bottom blowing device of ladle refining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203683578U (en) |
-
2013
- 2013-12-30 CN CN201320876007.0U patent/CN203683578U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |