CN206732116U - One kind side, the pre-heated submersed nozzle of round billet covering slag - Google Patents
One kind side, the pre-heated submersed nozzle of round billet covering slag Download PDFInfo
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- CN206732116U CN206732116U CN201720228290.4U CN201720228290U CN206732116U CN 206732116 U CN206732116 U CN 206732116U CN 201720228290 U CN201720228290 U CN 201720228290U CN 206732116 U CN206732116 U CN 206732116U
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- Prior art keywords
- mouth
- river
- covering slag
- main body
- molten steel
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Abstract
One kind side, the pre-heated submersed nozzle of round billet covering slag; including mouth of a river main body; the mouth of a river main body includes mouth of a river dop and mouth of a river vertical section; mouth of a river dop is at the top of the vertical section of the mouth of a river; the top center of mouth of a river dop is provided with molten steel entrance; the bottom of mouth of a river main body exports provided with molten steel, and the center of mouth of a river main body is provided with the molten steel passage through mouth of a river main body, molten steel passage connection molten steel entrance and molten steel outlet；The upper outside of mouth of a river main body is provided with covering slag adding trough; mouth of a river body top is provided with covering slag and enters hole; covering slag enters the outer end connective protection slag addition trench bottom in hole, and inner connective protection slag preheating pipe, the bottom of covering slag preheating pipe connects the inner that covering slag portals；The party, the pre-heated submersed nozzle of round billet covering slag are preheated using the heat on submersed nozzle outer wall to covering slag, and while the pre- thermal efficiency can be significantly hotter than other modes, the heat that can also be wasted to script recycles, and is worth promoting.
Description
Technical field
It the utility model is related to field of iron and steel smelting, especially one kind side, the pre-heated submersed nozzle of round billet covering slag.
Background technology
Crystallizer is the heart of conticaster, and molten steel forms initial solidification shell in crystallizer.In modern continuous casting, cast to improve
The quality of base, molten steel casting process generally add covering slag in crystallizer.Covering slag is a kind of very big on continuous casting influence
Feature consumable material, there is adiabatic heat-insulation, prevent molten steel secondary oxidation, uniformly transfer heat, lubrication green shell and dross inclusion adsorption
Five big effects.There is slag layer, sinter layer and liquid slag layer three-decker in the covering slag floated on molten steel liquid level, this three from top to bottom
Rotating fields are that covering slag progressively melts formation after crystallizer is added using the radiating of molten steel.
For side, round billet continuous casting, the temperature field of molten steel initial solidification has of crucial importance for cc billet surface quality
Influence.As molten steel surface temperature is too low, crystallizer corner can be caused to tie cold steel and cause suspension bleed-out, the excessive influence of covering slag slag circle
Covering slag flow into, initial solidification shell temperature it is relatively low aggravation casting billet surface oscillation mark the problems such as appearance.Due to directly being contacted with covering slag,
Crystallizer molten steel surface temperature declines mainly to be caused by the heat absorption of covering slag, therefore lifts crystallizer molten steel surface temperature also just into carrying
High covering slag temperature.Some Enterprises employ the crystallization of heat top in quality requirement extremely strict steel grade to improve covering slag temperature
The technique that crystallizer is added after device technology and covering slag preheating.
Molten steel is injected in crystallizer by submersed nozzle, by the molten steel in the mouth of a river and crystallizer of refractory material preparation and guarantor
Shield slag directly contacts.In molten steel casting cycle, submersed nozzle can scatter and disappear substantial amounts of heat, and its outer wall would generally reach 1000
More than DEG C, if this partial heat is preheated for covering slag, while its pre- thermal efficiency can be significantly hotter than other modes, may be used also
Recycled with the heat wasted to script.
Utility model content
The utility model aims to provide a kind of heat using on submersed nozzle outer wall and covering slag is preheated, preheating
While efficiency can be significantly hotter than other modes, can also to script waste heat be recycled side, round billet covering slag
Pre-heated submersed nozzle.
To achieve the above object, the utility model provides following technical scheme：One kind side, the pre-heated immersion of round billet covering slag
The formula mouth of a river, including mouth of a river main body, the mouth of a river main body include mouth of a river dop and mouth of a river vertical section, and mouth of a river dop is vertical located at the mouth of a river
Section top, the top center of mouth of a river dop are provided with molten steel entrance, and the bottom of mouth of a river main body exports provided with molten steel, in the main body of the mouth of a river
The heart is provided with the molten steel passage through mouth of a river main body, molten steel passage connection molten steel entrance and molten steel outlet；Outside the top of mouth of a river main body
Side is provided with covering slag adding trough, and mouth of a river body top is provided with covering slag and enters hole, and covering slag enters the outer end connective protection slag addition in hole
Trench bottom, inner connective protection slag preheating pipe, the bottom of covering slag preheating pipe connect the inner that covering slag portals, covering slag
The outer end portalled is communicated to the outside of mouth of a river main body.
As further scheme of the present utility model：The covering slag enters hole provided with four, uniform annular array distribution, protects
It is 125~135 ° that shield slag, which enters the center line in hole and the angle of vertical direction,.
As further scheme of the present utility model：A diameter of 5~10mm of the covering slag preheating pipe, covering slag are pre-
The length of hot channel is 200~280mm, the beeline of the distance between center line mouth of a river outer wall of covering slag preheating pipe for 13~
20, the angle for going out centerline hole and vertical direction is 45~60 °.
As further scheme of the present utility model：The diameter that the covering slag enters hole and covering slag portals is 8mm.
As further scheme of the present utility model：The mouth of a river main body side material is refractory material, and is formed in one
Structure.
As further scheme of the present utility model：The covering slag adding trough is located at adding trough outer wall and mouth of a river main body
Between outer surface, adding trough outer wall is in infundibulate, and bottom is connected with mouth of a river main body.
As further scheme of the present utility model：The mouth of a river principal length is 750mm, and mouth of a river dop length is
150mm, the vertical segment length in the mouth of a river are 600mm, and vertical section external diameter is 90mm.
As further scheme of the present utility model：A diameter of 30mm of the molten steel passage of the mouth of a river main body, lower end is inserted
The depth of distance steel liquid level is 70~100mm after entering to crystallizer molten steel surface.
Compared with prior art, the beneficial effects of the utility model are：The party, the pre-heated submersed nozzle of round billet covering slag
Covering slag is preheated using the heat on submersed nozzle outer wall, while the pre- thermal efficiency can be significantly hotter than other modes,
The heat that can also be wasted to script is recycled, and pre-heating temperature elevation, the company of improving have been carried out to the covering slag for adding crystallizer
Slab quality, it is worth promoting.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Referring to Fig. 1, in the utility model embodiment, Yi Zhongfang, the pre-heated submersed nozzle of round billet covering slag, including water
Mouth main body, the mouth of a river main body include mouth of a river dop 5 and mouth of a river vertical section, and mouth of a river dop 5 is at the top of the vertical section of the mouth of a river, the mouth of a river
The top center of dop 5 is provided with molten steel entrance 1, and the bottom of mouth of a river main body is provided with molten steel outlet 8, and the center of mouth of a river main body, which is provided with, to be passed through
Wear the molten steel passage of mouth of a river main body, molten steel passage connection molten steel entrance 1 and molten steel outlet 8；The upper outside of mouth of a river main body is provided with
Covering slag adding trough 2, mouth of a river body top are provided with covering slag and enter hole 6, and covering slag enters the outer end connective protection slag adding trough 2 in hole 6
Bottom, inner connective protection slag preheating pipe 7, covering slag preheating pipe 7 bottom connection covering slag portal 4 the inner, protection
Portal 4 outer end of slag is communicated to the outside of mouth of a river main body.
Above-mentioned, covering slag enters hole 6 provided with four, and uniform annular array distribution, covering slag enters the center line and Vertical Square in hole 6
To angle be 125~135 °.
It is above-mentioned, a diameter of 5~10mm of covering slag preheating pipe 7, the length of covering slag preheating pipe 7 for 200~
280mm, the beeline of the distance between center line mouth of a river outer wall of covering slag preheating pipe 7 are 13~20, go out centerline hole with it is vertical
The angle in direction is 45~60 °.
Above-mentioned, covering slag enters hole 6 and covering slag portals, and 4 diameter is 8mm.
Above-mentioned, mouth of a river main body side material is refractory material, and the structure that is formed in one.
Above-mentioned, covering slag adding trough 2 is located between adding trough outer wall 3 and the outer surface of mouth of a river main body, and adding trough outer wall 3 is in
Infundibulate, bottom are connected with mouth of a river main body.
Above-mentioned, mouth of a river principal length is 750mm, and the length of mouth of a river dop 5 is 150mm, and the vertical segment length in the mouth of a river is 600mm,
Vertical section external diameter is 90mm.
Above-mentioned, a diameter of 30mm of the molten steel passage of mouth of a river main body, lower end is inserted into after crystallizer molten steel surface apart from molten steel
The depth in face is 70~100mm.
Design feature and its principle of the present utility model：Covering slag is carried out using the heat on submersed nozzle outer wall pre-
Heat, while the pre- thermal efficiency can be significantly hotter than other modes, the heat that can also be wasted to script recycles, and is worth energetically
Promote.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (8)
1. one kind side, the pre-heated submersed nozzle of round billet covering slag, including mouth of a river main body, it is characterised in that the mouth of a river main body
Including mouth of a river dop and mouth of a river vertical section, for mouth of a river dop at the top of the vertical section of the mouth of a river, the top center of mouth of a river dop is provided with steel
Liquid entrance, the bottom of mouth of a river main body export provided with molten steel, and the center of mouth of a river main body is provided with the molten steel passage through mouth of a river main body, steel
Liquid passage connects molten steel entrance and molten steel outlet；The upper outside of mouth of a river main body is provided with covering slag adding trough, mouth of a river body top
It is provided with covering slag and enters hole, covering slag enters the outer end connective protection slag addition trench bottom in hole, inner connective protection slag preheating pipe, protected
The inner that the bottom connection covering slag of shield slag preheating pipe portals, the outer end that covering slag portals is communicated to the outside of mouth of a river main body.
2. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the covering slag
Enter hole provided with four, uniform annular array distribution, it is 125~135 ° that covering slag, which enters the center line in hole and the angle of vertical direction,.
3. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the covering slag
A diameter of 5~10mm of preheating pipe, the length of covering slag preheating pipe are 200~280mm, the center of covering slag preheating pipe
The beeline of linear distance mouth of a river outer wall is 13~20, and the angle for going out centerline hole and vertical direction is 45~60 °.
4. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the covering slag
Enter hole and diameter that covering slag portals is 8mm.
5. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the mouth of a river master
Side material is refractory material, and the structure that is formed in one.
6. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the covering slag
Adding trough is located between adding trough outer wall and the outer surface of mouth of a river main body, and adding trough outer wall is in infundibulate, bottom and mouth of a river main body
Connection.
7. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the mouth of a river master
Body length is 750mm, and mouth of a river dop length is 150mm, and the vertical segment length in the mouth of a river is 600mm, and vertical section external diameter is 90mm.
8. side according to claim 1, the pre-heated submersed nozzle of round billet covering slag, it is characterised in that the mouth of a river master
A diameter of 30mm of the molten steel passage of body, lower end be inserted into the depth of distance steel liquid level after crystallizer molten steel surface for 70~
100mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228290.4U CN206732116U (en) | 2017-03-10 | 2017-03-10 | One kind side, the pre-heated submersed nozzle of round billet covering slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228290.4U CN206732116U (en) | 2017-03-10 | 2017-03-10 | One kind side, the pre-heated submersed nozzle of round billet covering slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206732116U true CN206732116U (en) | 2017-12-12 |
Family
ID=60556400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720228290.4U Expired - Fee Related CN206732116U (en) | 2017-03-10 | 2017-03-10 | One kind side, the pre-heated submersed nozzle of round billet covering slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206732116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181011A (en) * | 2019-06-25 | 2019-08-30 | 华北理工大学 | A kind of method and its system improving Continuous Casting Square, round billet surface quality |
-
2017
- 2017-03-10 CN CN201720228290.4U patent/CN206732116U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110181011A (en) * | 2019-06-25 | 2019-08-30 | 华北理工大学 | A kind of method and its system improving Continuous Casting Square, round billet surface quality |
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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: 20171212 Termination date: 20190310 |
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| CF01 | Termination of patent right due to non-payment of annual fee |