CN217600766U - Air supply element for combined blown converter - Google Patents
Air supply element for combined blown converter Download PDFInfo
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- CN217600766U CN217600766U CN202221274858.3U CN202221274858U CN217600766U CN 217600766 U CN217600766 U CN 217600766U CN 202221274858 U CN202221274858 U CN 202221274858U CN 217600766 U CN217600766 U CN 217600766U
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- refractory body
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- metal tube
- refractory
- supply element
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Abstract
The utility model relates to a gas supply element for a combined blowing converter, which comprises a refractory body and a metal tube, wherein the refractory body is a cylinder made of refractory materials, and the metal tube is arranged in the refractory body; the metal tube is filled with refractory materials, a plurality of pores are uniformly distributed in the metal tube, and the included angle between the central axis of the metal tube and the central axis of the refractory body is 3-15 degrees. The advantages are that: the structure of pre-buried tubular metal resonator in the cylindrical refractory body is adopted, and the tubular metal resonator and the refractory body take the setting of angle, make the interior molten steel of converter in the molten bath rotation of small amplitude, avoid offsetting with top-blown oxygen energy simultaneously, can strengthen the metallurgical effect of dynamics of converter molten steel, improve the combined blowing effect, show promotion converter production efficiency.
Description
Technical Field
The utility model belongs to the converter bottom blowing field especially relates to an air feed component for combined blown converter.
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 condition of a bottom lance element is one of equipment elements influencing the bottom blowing effect of the converter steelmaking process.
In the prior art: patent application No. CN201721593967.0, discloses a multi-purpose converter bottom blowing element; the patent application number is CN201120544834.0, and discloses a novel converter bottom blowing gas supply element; the technical scheme has the following problems: all the above bottom-blowing elements are straight cylinders and vertically supply bottom-blowing gas into the converter, the dynamic effect is not ideal, the vertical stirring form is easy to form energy offset with top-blown oxygen, and the stirring effect on the molten pool is not ideal.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide an air supply element for a combined blown converter, which ensures that the molten steel in the converter does small-amplitude rotary motion in a molten pool and avoids offsetting with the energy of top blown oxygen.
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:
a kind of compound blowing converter uses the air feed component, including refractory body, metal pipe, the refractory body is a cylinder made of refractory material, there are metal pipes in the refractory body; the metal tube is filled with refractory materials, a plurality of pores are uniformly distributed in the metal tube, and the included angle between the central axis of the metal tube and the central axis of the refractory body is 3-15 degrees.
The fine holes are axially parallel to the metal pipe.
One end of the metal pipe extends out of the refractory body by 30-50 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the air supply element for the combined blown converter adopts a structure of pre-embedding a metal pipe in a cylindrical refractory body, and the metal pipe and the refractory body are arranged at an angle, so that molten steel in the converter can rotate in a molten pool in a small amplitude, the energy of top blown oxygen is prevented from being offset, the dynamic metallurgical effect of the molten steel in the converter can be enhanced, the combined blown effect is improved, and the production efficiency of the converter is obviously improved.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a side view of the present invention.
In the figure: 1-refractory body 2-metal tube 3-pore.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1 and 2, the gas supply element for the combined blown converter comprises a refractory body and a metal pipe, wherein the refractory body is a cylinder made of refractory materials, and the metal pipe is arranged in the refractory body; the metal tube is filled with refractory materials, a plurality of pores are uniformly distributed in the metal tube, and the included angle between the central axis of the metal tube and the central axis of the refractory body is 3-15 degrees.
Wherein the fine holes are axially parallel to the metal pipe. One end of the metal pipe extends out of the refractory body by 30-50 mm.
Examples
A gas supply element for a combined blown converter, comprising a refractory body made of a refractory material containing magnesium carbon as a main component, and a metal tube made of a steel tube having a diameter of 28 to 40mm (the diameter of the metal tube in FIG. 1 is 28 mm), the metal tube being filled with the magnesium carbon refractory material, and the metal tube being opened 25 to 35 pieces (25 pieces in FIG. 1) in the center axial direction
The length of the part of the metal pipe exposed outside the whole refractory body is 40mm, the part is not filled with refractory materials, and the pores ensure smooth gas supply; the refractory body is a cylinder with a diameter of 110mm and a height of 1150 mm.
The included angle between the central axis of the metal tube and the central axis of the refractory body is 3-15 degrees (3 degrees in figure 1) to ensure that the gas fed into the converter has a certain angle with the furnace bottom. The whole element ensures that the lower part does not have the conditions of air leakage and the like under the high-temperature condition, the refractory material has good sintering, good filling and good fire resistance and high-temperature physical and chemical properties.
Adopt the utility model discloses a gas supply element makes the interior molten steel of converter in the molten bath small-amplitude rotary motion, avoids offsetting with top-blown oxygen energy, improves the metallurgical effect of converter production, shortens the smelting time, improves the relevant index of carbon oxygen deposit.
Claims (3)
1. The gas supply element for the combined blowing converter is characterized by comprising a refractory body and a metal pipe, wherein the refractory body is a cylinder made of refractory materials, and the metal pipe is arranged in the refractory body; the metal tube is filled with refractory materials, a plurality of pores are uniformly distributed in the metal tube, and the included angle between the central axis of the metal tube and the central axis of the refractory body is 3-15 degrees.
2. A gas supply member for a double blow converter according to claim 1, wherein said fine holes are axially parallel to the metal pipe.
3. The gas supply element for the combined blown converter according to claim 1, wherein one end of the metal tube extends 30-50 mm beyond the refractory body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221274858.3U CN217600766U (en) | 2022-05-26 | 2022-05-26 | Air supply element for combined blown converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221274858.3U CN217600766U (en) | 2022-05-26 | 2022-05-26 | Air supply element for combined blown converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217600766U true CN217600766U (en) | 2022-10-18 |
Family
ID=83568324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221274858.3U Active CN217600766U (en) | 2022-05-26 | 2022-05-26 | Air supply element for combined blown converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217600766U (en) |
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2022
- 2022-05-26 CN CN202221274858.3U patent/CN217600766U/en active Active
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