CN210237673U - Steel ladle air brick arrangement structure for refining process - Google Patents
Steel ladle air brick arrangement structure for refining process Download PDFInfo
- Publication number
- CN210237673U CN210237673U CN201920658583.5U CN201920658583U CN210237673U CN 210237673 U CN210237673 U CN 210237673U CN 201920658583 U CN201920658583 U CN 201920658583U CN 210237673 U CN210237673 U CN 210237673U
- Authority
- CN
- China
- Prior art keywords
- ladle
- blowing air
- air brick
- central point
- brick
- 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.)
- Expired - Fee Related
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- 239000011449 brick Substances 0.000 title claims abstract description 103
- 238000007670 refining Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 title description 13
- 239000010959 steel Substances 0.000 title description 13
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 194
- 229910052786 argon Inorganic materials 0.000 claims abstract description 97
- 238000007664 blowing Methods 0.000 claims abstract description 85
- 239000007789 gas Substances 0.000 claims description 9
- 229910052593 corundum Inorganic materials 0.000 claims description 4
- 239000010431 corundum Substances 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000009628 steelmaking Methods 0.000 abstract description 2
- 238000003756 stirring Methods 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model relates to a ladle air brick arrangement structure for refining technology belongs to steelmaking equipment technical field. The technical scheme is as follows: the distance between the central point of the RH argon blowing air brick I (4) and the central point of the RH argon blowing air brick II (5) and the central point of the ladle bottom of the ladle (1) is half of the ladle bottom radius of the ladle (1), the distance between the central point of the RH argon blowing air brick I (4), the central point of the RH argon blowing air brick II (5) and the central point of the ladle bottom of the ladle (1) is a straight line, the distance between the central point of the LF argon blowing air brick (6) and the central point of the ladle bottom of the ladle (1) is two thirds of the ladle bottom radius of the ladle (1), and a connecting line between the central point of the RH argon blowing air brick I (4), the central point of the RH argon blowing air brick II (5) and the central point of the LF argon blowing air brick (6) forms a triangle. The utility model has the advantages that: can meet the requirement of LF and RH duplex process and improve the refining efficiency.
Description
Technical Field
The utility model relates to a ladle air brick arrangement structure for refining technology belongs to metallurgical industry steelmaking equipment technical field.
Background
The bottom of the ladle of 50t is eccentrically blown with argon, so that the rising path of argon bubbles can be enlarged, the stirring of molten steel in vacuum is enhanced, and the refining efficiency is improved. The currently used 50t ladle bottom is only suitable for a single-nozzle vacuum refining furnace, cannot simultaneously meet the requirements of an LF and RH duplex process, and has low refining efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a ladle air brick arrangement structure for refining technology according to the flow field condition of blowing argon position at the bottom of the difference, confirms best bottom blowing argon position, can satisfy the requirement of LF and RH pair technology simultaneously, solves the problem that exists among the background art.
The technical scheme of the utility model is that:
a ladle air brick arrangement structure for a refining process comprises a ladle, a nozzle brick cup, a RH argon blowing air brick I, a RH argon blowing air brick II and an LF argon blowing air brick, a nozzle brick, an RH argon blowing air brick I, an RH argon blowing air brick II and an LF argon blowing air brick are respectively arranged at the bottom of the ladle, the distance between the central point of the RH argon blowing air brick I and the central point of the RH argon blowing air brick II and the central point of the bottom of the steel ladle is half of the radius of the bottom of the steel ladle, the distance between the central point of the RH argon blowing air brick I, the central point of the RH argon blowing air brick II and the central point of the bottom of the steel ladle is a straight line, the distance between the central point of the LF argon blowing air brick and the central point of the bottom of the steel ladle is two thirds of the radius of the bottom of the steel ladle, and a connecting line between the central point of the RH argon blowing air brick I, the central point of the RH argon blowing air brick II and the central point of the LF argon blowing air.
And the distance between the center point of the LF argon blowing air brick and the center point of the RH argon blowing air brick II is greater than the distance between the center point of the LF argon blowing air brick and the center point of the RH argon blowing air brick I.
The RH argon blowing air brick I, the RH argon blowing air brick II and the LF argon blowing air brick are all chrome corundum straight-through slit type air bricks.
Adopt the utility model discloses, before the new building ladle, with the clean up at the bottom of the package to trompil at the bottom of the ladle package according to above-mentioned requirement makes and will guarantee certain safe distance between the three air brick, guarantees resistant material intensity, guarantees to be able to bear or endure to erode and erosion-resistant performance. Meanwhile, the LF furnace is provided with a set of three-pipeline argon valve station, and the RH furnace is provided with a set of double-pipeline argon valve station for ladle bottom argon blowing.
The utility model has the advantages that: according to the flow field conditions of different bottom argon blowing positions, the optimal bottom argon blowing position is determined at the bottom of the ladle, the requirements of an LF and RH duplex process can be met simultaneously, and the refining efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: the device comprises a steel ladle 1, a nozzle pocket brick 2, a RH argon blowing air brick I4, a RH argon blowing air brick II 5 and an LF argon blowing air brick 6.
Detailed Description
The invention will be further explained by way of example with reference to the accompanying drawings.
Referring to the attached figure 1, the ladle air brick arrangement structure for the refining process comprises a ladle 1, a nozzle pocket brick 2, a RH argon blowing air brick I4, a RH argon blowing air brick II 5 and an LF argon blowing air brick 6, wherein the nozzle pocket brick 2, the RH argon blowing air brick I4, the RH argon blowing air brick II 5 and the LF argon blowing air brick 6 are respectively arranged at the bottom of the ladle 1, the distance between the central point of the RH argon blowing air brick I4 and the central point of the RH argon blowing air brick II 5 and the central point of the ladle bottom of the ladle 1 is half of the radius of the ladle bottom of the ladle 1, the distance between the central point of the RH argon blowing air brick I4, the central point of the RH argon blowing air brick II 5 and the central point of the ladle bottom of the ladle 1 is a straight line, the distance between the central point of the LF argon blowing air brick I4, the RH argon blowing air brick II 5 and the central point of the ladle bottom of the ladle 1 is two thirds of the radius of the ladle bottom of the ladle 1, and a connecting line between the central points of the RH argon blowing air brick I6 forms.
And the distance between the central point of the LF argon blowing air brick 6 and the central point of the RH argon blowing air brick II 5 is greater than the distance between the central point of the LF argon blowing air brick 6 and the central point of the RH argon blowing air brick I4.
In the present embodiment, the specific structure of the ladle 1 is as follows:
1) insulating layer: a 10mm thick nanometer thermal insulation board;
2) a permanent layer: the thickness of the ladle bottom permanent layer is 125mm, and the thickness of the ladle wall permanent layer is 80 mm;
3) the ladle bottom is made of corundum bonding material, the casting thickness is 255mm, and a prefabricated impact plate with the thickness of 600 multiplied by 400 multiplied by 200mm is used in an impact area;
4) bath working layer (1-19 layers): the carbon-free precast block is used, and the masonry thickness is 200 mm.
5) Slag line working layer (20-28 layers): the low-carbon slag line bricks are used, and the building thickness is 200 mm.
6) Functional material:
the RH argon blowing air brick I4, the RH argon blowing air brick II 5 and the LF argon blowing air brick 6 are all integral air bricks, and the chrome corundum is in a straight-through slit type and is slightly higher than a non-impact area of the ladle bottom in thickness;
nozzle pocket brick 2: the thickness is consistent with the thickness of the refractory material at the non-impact area of the ladle bottom;
before the steel ladle is newly built, the ladle bottom is cleaned, holes are formed in the ladle bottom according to the requirements, a certain safety distance is guaranteed among the three air bricks, the strength of a refractory material is guaranteed, and the scouring resistance and the erosion resistance are guaranteed. Meanwhile, the LF furnace is provided with a set of three-pipeline argon valve station, and the RH furnace is provided with a set of double-pipeline argon valve station for ladle bottom argon blowing.
During refining of the LF furnace, an LF furnace argon valve station adopts a three-way pipeline independent control system, three argon pipelines are respectively connected when the LF furnace enters the station, two RH argon blowing air bricks select small gas quantity to supply gas in the refining, power transmission, temperature rise and weak stirring processes, the flow is controlled within 10 l/min, and the LF argon blowing air bricks carry out flow adjustment according to the process control requirements, wherein the flow is controlled within 40-80 l/min; during strong stirring, the three air bricks are used simultaneously, the gas flow of the two RH argon blowing air bricks is controlled within 250 l/min, and the gas flow of the LF argon blowing air bricks is controlled within 400 l/min, so that the uniform mixing effect of molten steel is greatly enhanced, the uniform mixing time is shortened by more than half compared with that of a single LF air brick, and the molten steel composition control is facilitated.
During RH furnace refining, a double-pipeline independent control system is adopted in an RH furnace argon valve station, an RH double-pipeline argon pipeline is connected when the RH furnace refining station enters the station, one argon blowing air brick is selected to perform bottom argon blowing stirring, and if the bottom argon blowing of the pipeline is found to be abnormal in the vacuum bottom blowing process, the RH furnace argon valve station can be switched to the other argon pipeline to perform argon blowing; and argon is blown alternately by two argon pipelines, so that the scouring erosion of molten steel on the dip pipe can be reduced, the service life is prolonged, and the production cost is reduced.
Claims (3)
1. A ladle air brick arrangement structure for a refining process is characterized by comprising a ladle (1), a nozzle pocket brick (2), a RH argon blowing air brick (4), a RH argon blowing air brick (5) and an LF argon blowing air brick (6), wherein the ladle bottom of the ladle (1) is respectively provided with the nozzle pocket brick (2), the RH argon blowing air brick (4), the RH argon blowing air brick (5) and the LF argon blowing air brick (6), the distance between the central point of the RH argon blowing air brick (4) and the central point of the RH argon blowing air brick (5) and the central point of the ladle bottom of the ladle (1) is half of the radius of the ladle bottom of the ladle (1), the central point of the RH argon blowing air brick (4), the central point of the RH argon blowing air brick (5) and the central point of the ladle bottom of the ladle (1) are a straight line, the distance between the LF argon blowing air brick (6) and the central point of the ladle bottom of the ladle (1) is two thirds of the radius of the ladle bottom of the ladle (1), and connecting lines among the central point of the RH argon blowing air brick I (4), the central point of the RH argon blowing air brick II (5) and the central point of the LF argon blowing air brick (6) form a triangle.
2. The ladle brick arrangement structure for a refining process according to claim 1, wherein a distance between a center point of the LF argon-blowing brick (6) and a center point of the RH argon-blowing brick (5) is greater than a distance between a center point of the LF argon-blowing brick (6) and a center point of the RH argon-blowing brick (4).
3. The ladle gas permeable brick arrangement structure for a refining process according to claim 1 or 2, wherein the RH-blown argon gas permeable brick (4), the RH-blown argon gas permeable brick (5) and the LF-blown argon gas permeable brick (6) are all chrome corundum straight slit gas permeable bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658583.5U CN210237673U (en) | 2019-05-09 | 2019-05-09 | Steel ladle air brick arrangement structure for refining process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920658583.5U CN210237673U (en) | 2019-05-09 | 2019-05-09 | Steel ladle air brick arrangement structure for refining process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210237673U true CN210237673U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920658583.5U Expired - Fee Related CN210237673U (en) | 2019-05-09 | 2019-05-09 | Steel ladle air brick arrangement structure for refining process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210237673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985715A (en) * | 2022-06-21 | 2022-09-02 | 芜湖新兴铸管有限责任公司 | Multi-group air brick steel ladle equipment and steel ladle smelting control method |
-
2019
- 2019-05-09 CN CN201920658583.5U patent/CN210237673U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114985715A (en) * | 2022-06-21 | 2022-09-02 | 芜湖新兴铸管有限责任公司 | Multi-group air brick steel ladle equipment and steel ladle smelting control method |
| CN114985715B (en) * | 2022-06-21 | 2023-11-17 | 芜湖新兴铸管有限责任公司 | Ladle equipment with multiple groups of air bricks and ladle smelting control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200403 |
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| CF01 | Termination of patent right due to non-payment of annual fee |