CN206359553U - Molten iron desulfurizing and demagging agent spraying gun - Google Patents
Molten iron desulfurizing and demagging agent spraying gun Download PDFInfo
- Publication number
- CN206359553U CN206359553U CN201621443304.6U CN201621443304U CN206359553U CN 206359553 U CN206359553 U CN 206359553U CN 201621443304 U CN201621443304 U CN 201621443304U CN 206359553 U CN206359553 U CN 206359553U
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- outer protection
- protection tube
- external auxiliary
- auxiliary pillar
- molten iron
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model belongs to metallurgy iron water pretreatment desulphurization plant field, more particularly to a kind of molten iron desulfurizing and demagging agent spraying gun, including outer protection tube（2）And central tube（1）；Characterized in that, the central tube（1）It is placed in outer protection tube（2）It is interior；The outer protection tube（2）Using rhs-structure；In the outer protection tube（2）Outside warm interlayer（7）It is fixed with external auxiliary pillar（3）；The external auxiliary pillar（3）It is placed on outer protection tube（2）Outside；The external auxiliary pillar（3）It is externally provided with protective refractory layer（4）；The protective refractory layer（4）Inside it is fixed with grilled metal skeleton（5）.Utility model works long lifespan, applied at elevated temperature performance is preferable.
Description
Technical field
The utility model belongs to metallurgy iron water pretreatment desulphurization plant field, more particularly to a kind of spray of molten iron desulfurizing and demagging agent
Rifle.
Background technology
Developed rapidly as modern industry is produced with scientific and technical, the requirement to steel product quality is increasingly improved.It is substantial amounts of
Research shows that molten iron pretreatment desulfurizing has been accepted as being that blast furnace converter-continuous casting flow reduces the most economical work of sulfur nutrient in steel
Skill, is to improve one of important means of blast furnace and converter operation, is played an important role in steel-making, and locate in advance to comprehensive molten iron
The direction of reason is developed.For example, underbead crack and obtain good surface quality in order to avoid steel billet is produced, it is desirable to which ordinary steel contains
Sulfur content is less than 0.020%；In order that structural steel has uniform mechanical performance (reducing anisotropy), it is desirable to sulfur content in steel
Less than 0.010%；In order that oil and natural gas delivery pipe, petroleum refining unit steel, offshore production platform steel, low temperature are used
Steel, medium-thickness ship plate steel and aviation steel etc. have the impact flexibility of hydrogen induced cracking resistance energy, mechanical performance evenly and Geng Gao, silicon
Steel has good electromagnetic performance, and sheet steel has excellent deep drawability etc., it is desirable to which sulfur content is less than 0.005% in steel.Will
The steel of such low-sulfur are sought, it is difficult production to smelt iron a converter steelmaking process with traditional blast furnace continuous casting steel machine to be, only in refining
Plus could be produced plus furnace outer refining process after molten iron pre-desulfurization process, steel-making before steel.Molten iron pre-desulfurization has turned into excellent
Change one of indispensable process of metallurgical production process, it can reduce continuous casting steel machine | the coke ratio and raising productivity ratio of ironmaking, subtract
Lime consumption amount and the quantity of slag for making steel less etc., so as to reduce production cost.
The desulfuring spray gun that existing blowing process is used, stirring force direction is single, and mixing power is not enough, can cause some desulfurized powders
Agent, does not participate in desulfurization and has just floated in slag, the insufficient effect that desulfurization is not had still in molten iron of some desulfurization products floating
Really, mixing power is weak, causes desulphurization reaction speed slow, desulfuration efficiency is low.Further, since in spout magnesium metal reaction product deposition
Adhesion, spout clogging is very frequent, and because the adhesion of reaction product high temperature semi-molten is Nian Jie with normal temperature cure, causes reaction
Thing dry slag is cleared up dredges very difficult with spout.How on the basis of molten iron spraying desulfurization spraying dynamic conditions is ensured, spray is prevented
Mouth is blocked, extension spray gun service life is one of important research direction of current molten iron spraying desulfurization spraying.
Utility model content
The utility model is intended to overcome the deficiencies in the prior art part and provide a kind of long working life, can prevent spout from blocking up
Plug, the preferable molten iron desulfurizing and demagging agent spraying gun of applied at elevated temperature performance.
In order to solve the above technical problems, what the utility model was realized in.
Molten iron desulfurizing and demagging agent spraying gun, including outer protection tube and central tube；The central tube is placed in outer protection tube；The outer protection tube
Using rhs-structure；Warm interlayer is fixed with external auxiliary pillar outside the outer protection tube；The external auxiliary pillar
It is placed on outside outer protection tube；The external auxiliary pillar is externally provided with protective refractory layer；Grid is fixed with the protective refractory layer
Shape metallic framework；V-type fastener is fixed with the grilled metal skeleton；The both sides angle of the V-type fastener is
60 degree；In the protective refractory layer, it is longitudinally spaced-apart provided with adiabator layer.Protective refractory layer described in the utility model
It is interior, it is longitudinally spaced-apart provided with adiabator layer.
The utility model can be buffered due to steel core by the certain thickness adiabator layer of addition in protective refractory layer
With the stress produced by the differences in expansion of refractory material.External auxiliary pillar is fixed with by warm interlayer outside outer protection tube
And the structure design that external auxiliary pillar is placed on outside outer protection tube can improve thermal stress distribution situation in gun body, improve gun body
Service life.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.Protection model of the present utility model
Enclose the statement for being not only limited to following content.
Fig. 1 is overall structure diagram of the present utility model.
In figure：1st, central tube；2nd, outer protection tube；3rd, external auxiliary pillar；4th, protective refractory layer；5th, grilled metal skeleton；
6th, adiabator layer；7th, insulating interlayer；8th, V-type fastener.
Embodiment
As shown in figure 1, molten iron desulfurizing and demagging agent spraying gun, it includes outer protection tube 2 and central tube 1；The central tube 1 is placed in outer shield
In pipe 2；The outer protection tube 2 uses rhs-structure；In the outside of outer protection tube 2, warm interlayer 7 is fixed with external auxiliary shield
Pipe 3；The external auxiliary pillar 3 is placed on outside outer protection tube 2；The external auxiliary pillar 3 is externally provided with protective refractory layer 4；Institute
State and V-type fastener 8 is fixed with grilled metal skeleton 5；The both sides angle of the V-type fastener 8 is 60 degree；The fire resisting
Grilled metal skeleton 5 is fixed with overcoat 4.In protective refractory layer 4 described in the utility model, it is longitudinally spaced-apart
Provided with adiabator layer 6.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (1)
1. a kind of molten iron desulfurizing and demagging agent spraying gun, including outer protection tube（2）And central tube（1）；Characterized in that, the central tube（1）
It is placed in outer protection tube（2）It is interior；The outer protection tube（2）Using rhs-structure；In the outer protection tube（2）Outside warm interlayer（7）Gu
Surely it is provided with external auxiliary pillar（3）；The external auxiliary pillar（3）It is placed on outer protection tube（2）Outside；The external auxiliary pillar
（3）It is externally provided with protective refractory layer（4）；The protective refractory layer（4）Inside it is fixed with grilled metal skeleton（5）；In the lattice
Palisade metallic framework（5）On be fixed with V-type fastener（8）；The V-type fastener（8）Both sides angle be 60 degree；It is described resistance to
Fiery overcoat（4）It is interior, it is longitudinally spaced-apart provided with adiabator layer（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443304.6U CN206359553U (en) | 2016-12-27 | 2016-12-27 | Molten iron desulfurizing and demagging agent spraying gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621443304.6U CN206359553U (en) | 2016-12-27 | 2016-12-27 | Molten iron desulfurizing and demagging agent spraying gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206359553U true CN206359553U (en) | 2017-07-28 |
Family
ID=59376549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621443304.6U Active CN206359553U (en) | 2016-12-27 | 2016-12-27 | Molten iron desulfurizing and demagging agent spraying gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206359553U (en) |
-
2016
- 2016-12-27 CN CN201621443304.6U patent/CN206359553U/en active Active
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