CN216712151U - Efficient converter bottom blowing element - Google Patents
Efficient converter bottom blowing element Download PDFInfo
- Publication number
- CN216712151U CN216712151U CN202220038848.3U CN202220038848U CN216712151U CN 216712151 U CN216712151 U CN 216712151U CN 202220038848 U CN202220038848 U CN 202220038848U CN 216712151 U CN216712151 U CN 216712151U
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- CN
- China
- Prior art keywords
- pipe
- outer sleeve
- converter
- small
- small pipe
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- 238000007664 blowing Methods 0.000 title claims abstract description 39
- 239000011819 refractory material Substances 0.000 claims abstract description 4
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 9
- 239000010959 steel Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- RWDBMHZWXLUGIB-UHFFFAOYSA-N [C].[Mg] Chemical compound [C].[Mg] RWDBMHZWXLUGIB-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model relates to the technical field of converter bottom blowing, in particular to a high-efficiency converter bottom blowing element. Comprises an outer sleeve, a large pipe and a small pipe; the outer sleeve is made of a refractory material, the outer sleeve is cylindrical, and the axis of the outer sleeve is a vertical line; the large pipe and the small pipe are round pipes, the large pipe is positioned in the outer sleeve and positioned at one end of the outer sleeve, one end of the small pipe is communicated with the large pipe, and the other end of the small pipe extends out of the outer sleeve; the large pipe and the small pipe are made of metal materials, the diameter of the large pipe is larger than that of the small pipe, the axis of the large pipe is the same as that of the small pipe, and included angles between the axis of the large pipe and the axis of the small pipe and a vertical line are 2-5 degrees. The utility model supplies bottom blowing gas into the converter obliquely and upwards, so that the molten steel in the converter rotates in a small amplitude in a molten pool, the energy of the top blowing gas is prevented from being offset, the dynamic metallurgical effect of the molten steel in the converter can be enhanced, the combined blowing effect is improved, the production efficiency of the converter is obviously improved, and the economic and technical indexes of the converter are improved.
Description
Technical Field
The utility model relates to the technical field of converter bottom blowing, in particular to a high-efficiency converter bottom blowing element.
Background
The top-bottom combined blowing of the steel-making converter is a comprehensive technology integrating the advantages of top blowing and bottom blowing of the converter, has better metallurgical characteristics than top blowing or bottom blowing, and is widely applied to a plurality of steel enterprises in the world. The converter top-bottom composite blowing technology can shorten the smelting time, reduce FeO in slag, improve the yield of metal and ensure that the temperature and the components of molten steel are uniform.
With the common application of the converter slag splashing technology in China since the 90 s of the 20 th century, the furnace life of the converter is obviously improved, but the combined blowing ratio is remarkably reduced, and the economic benefit of the converter combined blowing technology is correspondingly suppressed in production. How to effectively prolong the combined blowing service life of the converter is the key of the combined blowing converter smelting technology, and the bottom lance element directly influences the bottom blowing effect of the converter steelmaking process.
At present, bottom blowing elements are all straight cylinders for vertically supplying bottom blowing gas into a converter, the dynamic effect is not ideal, the vertical stirring form is easy to form energy offset with top blowing oxygen, and the stirring effect on a molten pool is not ideal.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the efficient converter bottom blowing element, which can enhance the dynamic metallurgical effect of converter molten steel, improve the combined blowing effect, obviously improve the production efficiency of the converter and improve the economic and technical indexes of the converter while avoiding the energy offset with top blown oxygen.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a high-efficiency converter bottom blowing element comprises an outer sleeve, a large pipe and a small pipe; the outer sleeve is made of a refractory material, the outer sleeve is cylindrical, and the axis of the outer sleeve is a vertical line; the large pipe and the small pipe are round pipes, the large pipe is positioned in the outer sleeve and positioned at one end of the outer sleeve, one end of the small pipe is communicated with the large pipe, and the other end of the small pipe extends out of the outer sleeve; the large pipe and the small pipe are made of metal materials, the diameter of the large pipe is larger than that of the small pipe, the axis of the large pipe is the same as that of the small pipe, and included angles between the axis of the large pipe and the axis of the small pipe and a vertical line are 2-5 degrees.
The small pipe extends out of the outer sleeve by more than 40 mm.
The included angles between the axes of the large pipe and the small pipe and the vertical line are 3 degrees.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model comprises an outer sleeve, a large pipe and a small pipe, wherein the axes of the large pipe and the small pipe are the same, and the included angles of the axes of the large pipe and the small pipe and the axis of the outer sleeve are 3 degrees. The utility model supplies bottom blowing gas into the converter obliquely and upwards, so that the molten steel in the converter rotates in a small amplitude in a molten pool, the energy of the top blowing gas is prevented from being offset, the dynamic metallurgical effect of the molten steel in the converter can be enhanced, the combined blowing effect is improved, the production efficiency of the converter is obviously improved, and the economic and technical indexes of the converter are improved.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a bottom view of the present invention.
In the figure: 1-jacket 2-large pipe 3-small pipe 4-large pipe axis 5-vertical line
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in figures 1-3, the high-efficiency bottom blowing element of the converter comprises an outer sleeve 1, a large pipe 2 and a small pipe 3.
The outer sleeve 1 is made of a refractory material taking magnesium carbon as a main component, the outer sleeve 1 is cylindrical, the diameter of the outer sleeve is 110mm, the height of the outer sleeve is 1100mm, and the axis 5 of the outer sleeve is parallel to the vertical line 5.
The large tube 2 is a metal round tube with a diameter of 28mm and a length of 50 mm. The large pipe 2 is positioned in the outer sleeve 1 and at the bottom end of the outer sleeve 1. The angle between the axis 4 of the large pipe and the vertical line 5 is 3 deg.
The small tube 3 is a metal round tube with a diameter of 14mm and a length of 1450 mm. The small pipe 3 is communicated with the large pipe 2, the small pipe 3 is positioned in the outer sleeve 1 and positioned at the top end of the outer sleeve 1, the length of the small pipe 3 extending out of the outer sleeve 1 is 40mm, the axial line of the small pipe is the same as the axial line 4 of the large pipe, and the included angle of the small pipe and the vertical line 5 is 3 degrees.
The bottom blowing gas is argon and nitrogen, and the purity is more than or equal to 99.99 percent. The small pipe 3 is connected with a bottom blowing gas source through a pipeline, the working pressure of the bottom blowing gas is 0.5MPa to 2.0MPa, and the gas supply intensity is 0.03Nm3/t·min～0.15Nm3/t·min。
The included angle between the gas supply pipeline and the vertical line is 3 degrees, the bottom blowing gas is obliquely and upwards supplied into the converter, so that the molten steel in the converter rotates in a small range in a molten pool, the energy of the top blowing gas is prevented from being offset, the dynamic metallurgical effect of the molten steel in the converter can be enhanced, the combined blowing effect is improved, the production efficiency of the converter is obviously improved, and the economic and technical indexes of the converter are improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (3)
1. A high-efficiency converter bottom blowing element is characterized in that: comprises an outer sleeve, a large pipe and a small pipe; the outer sleeve is made of a refractory material, the outer sleeve is cylindrical, and the axis of the outer sleeve is a vertical line; the large pipe and the small pipe are round pipes, the large pipe is positioned in the outer sleeve and positioned at one end of the outer sleeve, one end of the small pipe is communicated with the large pipe, and the other end of the small pipe extends out of the outer sleeve; the large pipe and the small pipe are made of metal materials, the diameter of the large pipe is larger than that of the small pipe, the axis of the large pipe is the same as that of the small pipe, and included angles between the axis of the large pipe and the axis of the small pipe and a vertical line are 2-5 degrees.
2. A high efficiency rotary hearth furnace bottom blowing element according to claim 1, wherein: the small pipe extends out of the outer sleeve by more than 40 mm.
3. A high efficiency rotary hearth blowing element as defined in claim 1, wherein: the included angles between the axes of the large pipe and the small pipe and the vertical line are 3 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220038848.3U CN216712151U (en) | 2022-01-07 | 2022-01-07 | Efficient converter bottom blowing element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220038848.3U CN216712151U (en) | 2022-01-07 | 2022-01-07 | Efficient converter bottom blowing element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216712151U true CN216712151U (en) | 2022-06-10 |
Family
ID=81890166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220038848.3U Active CN216712151U (en) | 2022-01-07 | 2022-01-07 | Efficient converter bottom blowing element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216712151U (en) |
-
2022
- 2022-01-07 CN CN202220038848.3U patent/CN216712151U/en active Active
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