CN213388766U - Magnesium spinel brick structure for RH dip pipe - Google Patents
Magnesium spinel brick structure for RH dip pipe Download PDFInfo
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- CN213388766U CN213388766U CN202021451663.2U CN202021451663U CN213388766U CN 213388766 U CN213388766 U CN 213388766U CN 202021451663 U CN202021451663 U CN 202021451663U CN 213388766 U CN213388766 U CN 213388766U
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- working lining
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- pipe
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
A magnesium spinel brick structure for an RH dip pipe relates to the technical field of secondary refining, and comprises a working lining brick block, wherein the working lining brick block comprises two corresponding working lining bricks A and B, an installation channel is arranged on the opposite surface between the working lining bricks A and B, an inert gas conveying pipe is arranged in the installation channel, fire clay is arranged on the outer surface of the inert gas conveying pipe, a semi-cylindrical groove A is arranged on the inner surface of the working lining brick A corresponding to the working lining brick B, a semi-cylindrical groove B is arranged on the inner surface of the working lining brick B corresponding to the working lining brick A, the working lining brick A is in contact with the inner surface of the working lining brick B, and the semi-cylindrical groove A and the semi-cylindrical groove B form the installation channel; the utility model discloses simple structure, convenient to use, greatly increased the whole life-span of being on active service of refining furnace ring canal.
Description
Technical Field
The utility model belongs to the technical field of the external refining technique of stove and specifically relates to a magnesium spinel brick structure for RH dip pipe.
Background
As known, before the RH furnace works, two circular pipes connected with a vacuum groove are immersed into ladle molten steel to be treated, the vacuum groove is vacuumized, an inert gas conveying pipe arranged in an ascending circular pipe is blown with argon/nitrogen, so that a higher static pressure difference is generated relative to a descending circular pipe without blowing argon, the molten steel enters the vacuum groove from the ascending circular pipe, gas in the molten steel is pumped away in a vacuum state, and the treated molten steel flows out of the descending circular pipe, so that the refining purposes of degassing, alloying, impurity removal and the like are realized.
The ascending ring pipe is sequentially provided with a pouring material, a steel liner, a self-flowing material and a working lining brick from outside to inside in the radial direction. The inert gas conveying pipe is connected from the outside of the ring pipe, sequentially penetrates through the materials of all layers, and conveys inert gas into the ring pipe. In the refining process, particularly to the middle and later stages of refining, the refractory material near the orifice of the working lining brick containing the inert gas conveying pipe has serious diameter expansion, and the good effect can not be achieved through spray repair maintenance, so that the whole ring pipe is offline. Two important factors affecting the service life of the refractory material at the position are as follows: a processing mode of the inert gas placing hole of the working lining brick and a mounting treatment mode of the working lining brick containing the hole. The working lining brick is processed into an inert gas pipe installation channel in a drilling mode through a drill bit, and the material structure around the hole is damaged, the strength is reduced, and the erosion resistance and the scouring resistance are reduced due to mechanical vibration in the processing process. In order to facilitate the installation of the inert gas conveying pipe, a fitting tolerance is designed between the installation channel and the inner diameter of the pipeline, a gap exists between the pipe and the hole after the inert gas conveying pipe is installed, before the ascending ring pipe is online refined, fireclay is manually smeared between the hot-surface gas conveying pipe of the working lining brick and the hole gap, because the smearing is limited on the surface, when the working lining brick is corroded and damaged backwards, the gap at the rear end leaks outwards, and high-temperature molten steel/slag is drilled into the gap, the damage of the part is accelerated, and the expansion is accelerated. The weak link often becomes the toggle of the service life of the refining furnace ring pipe, and the refining efficiency is influenced.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses a magnesium spinel brick structure for an RH dip pipe.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a magnesium spinel brick structure for RH dip pipe, including the work lining brick piece, the work lining brick piece includes two corresponding work lining brick A and work lining brick B, be equipped with the installation passageway on the opposite face between work lining brick A and the work lining brick B, be equipped with the inert gas conveyer pipe in the installation passageway, be equipped with the fireclay on the surface of inert gas conveyer pipe, be equipped with the recess A of semicylindrical form on the inner face of work lining brick A corresponding with work lining brick B, be equipped with the recess B of semicylindrical form on the inner face of work lining brick B corresponding with work lining brick A, work lining brick A contacts the setting with the inner face of work lining brick B, the recess A of semicylindrical form with the recess B of semicylindrical form the installation passageway.
The RH dip pipe is of a magnesium spinel brick structure, and a semi-cylindrical groove A and a semi-cylindrical groove B are respectively arranged between the cold surface and the hot surface of the working lining brick A and the working lining brick B.
The RH dip pipe is with magnesium spinel brick structure, semi-cylinder recess A, semi-cylinder recess B respectively with the radius phase-match of inert gas conveyer pipe.
Since the technical scheme is used, the utility model discloses following beneficial effect has:
the magnesium spinel brick structure for the RH dip pipe of the utility model is an installation channel of an inert gas conveying pipe by arranging the semi-cylindrical groove A and the semi-cylindrical groove B on the opposite surfaces of the working lining brick A and the working lining brick B, thereby effectively reducing the risk of premature damage of the part caused by the reduction of the material strength around the installation channel due to mechanical shock caused by drilling the installation channel; and drilling production links are reduced, and the condition that the brick body is damaged due to multiple times of carrying is avoided. The fire clay layer is uniformly coated on the surface of the conveying pipe, and the fire clay layer on the surface of the conveying pipe is extruded when the working lining brick A and the working lining brick B are assembled to be closely combined with the channel, so that the risk caused by the expansion of the hot-surface inert gas conveying pipe channel of the working lining brick due to the fact that steel/slag is drilled due to the fact that a gap exists between the drilled installation channel and the wall of the conveying pipe is avoided; the utility model discloses simple structure, convenient to use, greatly increased the whole life-span of being on active service of refining furnace ring canal.
Drawings
FIG. 1 is a schematic structural view of a working lining brick A and a working lining brick B of the present invention;
FIG. 2 is a schematic view of the inner surface of the working lining brick A of the present invention;
fig. 3 is a schematic view of the installation structure of the present invention;
in the figure: 1. working lining bricks A; 2. working lining bricks B; 3. a semi-cylindrical recess A; 4. a semi-cylindrical recess B; 5. hot noodles; 6. cooling the noodles; 7. an inert gas delivery pipe; 8. installing a channel; 9. fire clay.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
The magnesium spinel brick structure for the RH dip pipe described in connection with fig. 1-3 includes a working lining brick block, the working lining brick block includes two corresponding working lining bricks a1 and B2, a mounting channel 8 is provided on the opposite surface between the working lining brick a1 and the working lining brick B2, an inert gas delivery pipe 7 is provided in the mounting channel 8, fire clay 9 is provided on the outer surface of the inert gas delivery pipe 7, a semi-cylindrical groove A3 is provided on the inner surface of the working lining brick a1 corresponding to the working lining brick B2, a semi-cylindrical groove B4 is provided on the inner surface of the working lining brick B2 corresponding to the working lining brick a1, the working lining brick a1 is provided in contact with the inner surface of the working lining brick B2, and the semi-cylindrical groove A3 and the semi-cylindrical groove B4 form the mounting channel 8.
The RH dip pipe is of a magnesium spinel brick structure, and a semi-cylindrical groove A3 and a semi-cylindrical groove B4 are respectively arranged between the cold surface 6 and the hot surface 5 of a working lining brick A1 and a working lining brick B2.
The RH dip pipe is with magnesium spinel brick structure, half cylinder recess A3, half cylinder recess B4 respectively with inert gas conveyer pipe 7 radius phase-match.
Implement the utility model discloses a magnesium spinel brick structure for RH dip pipe, when the equipment, at first smear fire clay 9 with the external surface of inert gas conveyer pipe 7, place it in work lining brick A1's halfcylinder recess A3 earlier, or place in work lining brick B2's halfcylinder recess B4 earlier, then assemble second half work lining brick B2 or work lining brick A1, and extrude, make it combine closely with inert gas conveyer pipe 7 and installation channel 8, assemble all the other refining furnace ring pipe bricks afterwards and can carry out next process operation.
The part of the utility model not detailed is prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.
Claims (3)
1. The utility model provides a magnesium spinel brick structure for RH dip pipe, includes the work lining fragment of brick, characterized by: the working lining brick block comprises two corresponding working lining bricks A and working lining bricks B, wherein a mounting channel is arranged on the opposite surface between the working lining bricks A and the working lining bricks B, an inert gas conveying pipe is arranged in the mounting channel, fire clay is arranged on the outer surface of the inert gas conveying pipe, a semi-cylindrical groove A is arranged on the inner surface of the working lining brick A corresponding to the working lining brick B, a semi-cylindrical groove B is arranged on the inner surface of the working lining brick B corresponding to the working lining brick A, the working lining brick A is in contact with the inner surface of the working lining brick B, and the semi-cylindrical groove A and the semi-cylindrical groove B form the mounting channel.
2. The magnesium spinel brick structure for RH dip pipes of claim 1, wherein: the semi-cylindrical grooves A and the semi-cylindrical grooves B are respectively arranged between the cold surface and the hot surface of the working lining brick A and the working lining brick B.
3. The magnesium spinel brick structure for RH dip pipes of claim 1, wherein: the semi-cylinder groove A and the semi-cylinder groove B are respectively matched with the radius of the inert gas conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021451663.2U CN213388766U (en) | 2020-07-22 | 2020-07-22 | Magnesium spinel brick structure for RH dip pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021451663.2U CN213388766U (en) | 2020-07-22 | 2020-07-22 | Magnesium spinel brick structure for RH dip pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213388766U true CN213388766U (en) | 2021-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021451663.2U Active CN213388766U (en) | 2020-07-22 | 2020-07-22 | Magnesium spinel brick structure for RH dip pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213388766U (en) |
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2020
- 2020-07-22 CN CN202021451663.2U patent/CN213388766U/en active Active
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