CN206814807U - A kind of protective case brick of converter bottom blowing air brick - Google Patents
A kind of protective case brick of converter bottom blowing air brick Download PDFInfo
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- CN206814807U CN206814807U CN201720328731.8U CN201720328731U CN206814807U CN 206814807 U CN206814807 U CN 206814807U CN 201720328731 U CN201720328731 U CN 201720328731U CN 206814807 U CN206814807 U CN 206814807U
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- brick
- protective case
- converter bottom
- blowing air
- hole
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Abstract
It the utility model is related to a kind of protective case brick of converter bottom blowing air brick; including protective case brick body and position limiting structure; the through hole for placing porous core brick is provided with the protective case brick body; the position limiting structure is located at one end that the protective case brick body is in contact with converter bottom; the converter bottom is provided with the location structure being engaged with the position limiting structure; the position limiting structure is moved to when being engaged with the location structure, the central point of the extended line of the axial line of the through hole by the cambered surface of the converter bottom.The setting of position limiting structure and location structure in the utility model; ensure central point of the extended line of the axial line of the through hole on protective case brick body by the cambered surface of converter bottom; and ensure that through hole axial line overlaps with the flange axial line of furnace bottom as far as possible, to improve quasi- heart rate of the porous core brick in installation process.
Description
Technical field
Converter steelmaking technical field in Ferrous Metallurgy is the utility model is related to, it is saturating to particularly relate to a kind of bottom-blowing of converter
The protective case brick of gas brick.
Background technology
The converter of the numerous iron and steel metallurgy enterprises in the whole nation has the demand of whole top bottom blowing, top bottom compositing blowing steelmaking technology
It is the effective way for reducing STEELMAKING PRODUCTION cost, there is good metallurgical effect and huge economic benefit, converter top bottom is compound
Blow the technological synthesis many advantages of oxygen top-blown converter technology and oxygen bottom blown converter technology, and iron oxide contains in slag is reduced
Amount, raising recovery rate of iron, reduction ferroalloy consumption etc. have superiority, by domestic and international steel-making enterprise extensive use.
Find in the application of this technology, because furnace bottom air brick use condition is severe, deteriorate very fast, a set of air brick
Generally can not be synchronous with furnace life.Its reason is：(1) stirring gas that air brick is passed through in molten bath expands rapidly several times, is molten steel
Huge stirring power is brought, the quick flowing of molten steel produces strong mechanical shock to air brick；(2) containing a large amount of in molten steel
Have serious chemical corrosion to refractory material at high temperature to refractory material objectionable impurities, these impurity；(3) stirring gas
Temperature is relatively low before not going out air brick, there is certain cooling effect to refractory material, and the end face of air brick is 1700 DEG C or so
Molten steel, this temperature change refractory material drastically easily burst and peeled off.The air brick to work under these conditions, then it is good
Its life-span of maintenance system is also difficult more than 6000 stoves, sometimes just 2000 stoves or so.Further, since the covering of slag blanket or due to various things
Therefore can also bottom blowing be stopped suddenly by dying.
In actual mechanical process, the air brick life-span is typically in 3000 stoves or so, it is necessary to which changing 2-4 air brick could realize
Full stove labour is blown again, and the replacing of protective case brick is once basic just loose, can not repeatedly be changed, and still can not realize full stove labour
Blow again.At present, pneumatic steelmaking generally uses Technology of Slag Splashingfor Furnace Maintenance, plus the optimization furnace life typically above ten thousand of process for making
Stove, some are even more than 30,000 stoves, that is to say, that the furnace life that a block converter averagely has more than 70% in whole stove labour can not answer
Blow, thus blow due benefit again to obtain within most furnace life.
The whether advanced rate of blowing again of one block converter technique is important one of beautiful, and to realize that whole blow again just must be hot
The lower air brick by damage quickly changes new air brick, and the numerous smelters in the whole nation have the whole demand blown again.At present, state
Interior only only a few enterprise can be changed under hot, but often changing once needs 4~7 hours, slightly have some setbacks utilization when
More, production is influenceed very much, and protective case brick is substantially just damaged after 1-2 core brick of replacing, it is impossible to ensure replacing more than 4 times,
It can not still realize that the full stove labour of a block converter is normally blown again.Occur the above situation the reason for be it is many, at present, air brick
Core brick structure, protective case brick structure etc. all can not meet quick-replaceable requirement.Therefore, to the structure of protective case brick, material and
It is very necessary that the structure of porous core brick, which re-starts optimization design, to adapt to the needs of multiple quick change.
Utility model content
In order to solve the problems, such as that prior art is present, the utility model provides a kind of convenient set brick positioning, ensures ventilative
The protective case brick of the converter bottom blowing air brick at core brick face furnace bottom cambered surface center.
Technical scheme used by the utility model：
A kind of protective case brick of converter bottom blowing air brick, including protective case brick body and position limiting structure, the protective case
The through hole for being used for placing porous core brick is provided with brick body, the position limiting structure is located at the protective case brick body and converter bottom
The one end being in contact, the converter bottom are provided with the location structure being engaged with the position limiting structure, and the position limiting structure moves
Move to when being engaged with the location structure, the extended line of the axial line of the through hole is by the cambered surface of the converter bottom
Heart point.
As further improvement of the utility model, the through hole is located at the middle position that the protective case turns body.
As further improvement of the utility model, the position limiting structure be located at it is convex on the protective case brick body
Rise, the location structure is the groove set on the converter bottom.
It is described raised for by the spaced arc around circle distribution of multistage as further improvement of the utility model
The circular ring structure of body composition.
As further improvement of the utility model, the protective case brick body is formed in one with the position limiting structure.
As further improvement of the utility model, the outline of the cross section of the protective case brick body is fan-shaped, institute
The outline for stating the longitudinal section of protective case brick body is trapezoidal.
As further improvement of the utility model, the raised size in the converter bottom thickness direction is less than
The thickness of the converter bottom.
As further improvement of the utility model, the through hole is straight-tube shape, and the porous core brick is located at the through hole
It is interior.
As further improvement of the utility model, the porous core brick for cylinder, it is described set brick through hole inwall with
The periphery of the porous core brick is engaged.
As further improvement of the utility model, have that multiple parallel verticals set in the porous core brick it is hollow not
Become rusty steel wool tubule, all capillaries it is rectangular in a row or the circular cross section for being arranged on the porous core brick middle part.
Many technique effects that optimal technical scheme in many technical schemes provided by the utility model can be generated are detailed
See below elaboration：
(1) in the utility model position limiting structure and location structure setting, can more precisely determine protective case brick body
Position in converter, ensure the axis of the flange of the axes alignment furnace bottom of protective case brick body, so that core brick is passing through protection
The groove of furnace bottom is smoothly inserted during the through hole for covering brick, and then is stretched into perrin process orchid cylinder, improves porous core brick in installation process
Quasi- heart rate.
(2) the protective case brick body integrated design in the utility model, the segmented that compares protective case brick body, is being bored
During machine drill hole, there is more preferable globality and non-breakable property.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is overall structure diagram of the present utility model；
Fig. 2 is the overlooking the structure diagram in the utility model；
Fig. 3 is the present invention looks up structural representation in the utility model；
Fig. 4 is the mounting structure schematic diagram in the utility model.
1- protective cases brick body in figure；2- through holes；3- position limiting structures；4- converter bottoms；5- location structures；6- porous cores
Brick；7- tail pipes；8- flanges.
Embodiment
, below will be to technology of the present utility model to make the purpose of this utility model, technical scheme and advantage clearer
Scheme is described in detail.Obviously, described embodiment is only the utility model part of the embodiment, rather than all
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not before creative work is made
Resulting all other embodiment is put, belongs to the scope that the utility model is protected.
Referring to Fig. 1 to Fig. 4, a kind of protective case brick of converter bottom blowing air brick, including protective case brick body 1 and position limiting structure
3, protective case brick body 1 is interior to be provided with the through hole 2 for placing porous core brick 6, and position limiting structure 3 is located at protective case brick body 1 and Converter
One end that bottom 4 is in contact, converter bottom 4 are provided with the location structure 5 that is engaged with position limiting structure 3, position limiting structure 3 be moved to
When the positioning structure of knot 5 is engaged, the extended line of the axial line of through hole 2 passes through the central point of the cambered surface of converter bottom 4.
The utility model is connected by position limiting structure 3 with the location structure 5 on converter bottom 4, can more precisely be determined
Position of the protective case brick body 1 in converter, to improve quasi- heart rate of the porous core brick 6 in installation process, ensure porous core
The central point of the cambered surface of the face converter bottom 4 of brick 6, when changing air brick core 6, protective case brick body 1 is motionless, need to only remove ventilative
New air brick core 6 is put into by brick core 6 from the lower section of converter bottom 4 from through hole 2, protective case brick body 1 of the prior art
It can not be positioned in converter bottom 4, protecting pivoted housing body 1 to be placed on converter bottom 4 during stove is built at any time may generation
Mobile, so it is difficult to by the axle center of the flange 8 of the axes alignment furnace bottom of protective case brick body 1, slightly not smoothly, the used time is more, shadow
Ring construction speed.
In order to more smoothly carry out furnace bottom brick masonry work, the through hole 2 that the utility model is set on protective case brick body 1
Turn the middle position of the cross section of body 1 positioned at protective case.Above-mentioned position limiting structure 3 is the lower end for being located at protective case brick body 1
Along the projection of the downward projection in wall thickness direction of converter body, location structure 5 is the groove set on the converter bottom 4,
Projection is the circular ring structure being made up of the spaced arc body around circle distribution of multistage.
The height of position limiting structure 3 in the utility model is 15-30mm, the chi of the raised thickness direction in converter bottom 4
The very little thickness less than converter bottom 4, main projection can be put in the location structure 5 of converter bottom 4, ensure projection periphery with it is recessed
Groove is engaged, and prevents protective case brick body 1 to be subjected to displacement relative to converter bottom 4.
Protective case brick body 1 is formed in one with position limiting structure 3, wherein, protective case brick body 1 is your overall structure, phase
Compare segmented protective case brick body, in drill hole of drilling machine, there is more preferable globality and non-breakable property.
The outline of the cross section of protective case brick body 1 is sector, and the outline of the longitudinal section of protective case brick body 1 is ladder
Shape.That is, the profile of protective case brick body 1 is tread wedge shape, above protective case brick body 1 and it is following be fan-shaped.
Through hole on protective case brick body 1 is straight-tube shape, and porous core brick 6 is located in through hole 2, and porous core brick 6, which is worn, to be penetrated in guarantor
Through hole 2 on sheath brick body 1, and extend downwardly through the groove of converter body and stretch out converter bottom 4, positioned at converter bottom
The lower section of 4 outer wall, the lower end of porous core brick 6 are connected with tail pipe 7, and the porous core brick 6 positioned at the lower section of converter bottom 4 is connected with method
Orchid 8.Corresponding porous core brick 6 is cylinder, and the inwall of through hole 2 is engaged with the periphery of porous core brick 6, outside porous core brick 6
Footpath is identical, the porous core brick 6 damaged can be taken out in hot lower whole of convenience drilling machine, reduced to greatest extent residual in stove
Brick, ensure set brick integrality, increase the safety coefficient of converter bottom 4, shorten the quick change time of porous core brick 6, make improved ventilative
Core brick 6 is more suitable for quick-replaceable.
The through hole 2 of protective case brick body 1 of the present utility model and the fit clearance of porous core brick 6 are 1~2mm, through hole 2
Internal diameter is 121mm, and the external diameter of porous core brick 6 is 119mm, and the height of protective case brick body 1 is 600~1000mm.Porous core brick 6
Inside there is the hollow stainless steel capillary that multiple parallel verticals are set, the rectangular in a row or circle of all capillaries is arranged on
The middle part of the cross section of gaseous core brick 6, the internal diameter of stainless steel capillary is 1~3mm.The quantity of stainless steel capillary is generally higher than two
Root, all stainless steel capillaries are rectangular in a row or circle is arranged in the middle part of the cross section of porous core brick 6, stainless steel capillary
Uniform intervals are set.Delivered gas to by stainless steel capillary in converter, stainless steel capillary is uniformly distributed setting, with
Allow gas to uniformly enter in converter.
The utility model can be changed the bottom blowing porous core brick 6 of damage with the shorter time in hot state, and
And can make protective case brick body 1 be able to stand repeatedly change and it is not bad.
It is described above, only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should all cover within the scope of protection of the utility model.Therefore, guarantor's scope of the present utility model should be with the right
It is required that protection domain be defined.
Claims (10)
1. the protective case brick of a kind of converter bottom blowing air brick, it is characterised in that including protective case brick body (1) and position limiting structure
(3) through hole (2) for being used for placing porous core brick (6), is provided with the protective case brick body (1), the position limiting structure (3) is located at
One end that the protective case brick body (1) is in contact with converter bottom (4), the converter bottom (4) be provided with it is described spacing
The location structure (5) that structure (3) is engaged, the position limiting structure (3) is moved to when being engaged with the location structure (5), institute
State central point of the extended line of the axial line of through hole (2) by the cambered surface of the converter bottom (4).
2. the protective case brick of a kind of converter bottom blowing air brick described in claim 1, it is characterised in that the through hole (2) is located at
The protective case turns the middle position of body (1).
A kind of 3. protective case brick of converter bottom blowing air brick described in claim 1, it is characterised in that the position limiting structure (3)
For the projection being located on the protective case brick body (1), the location structure (5) is set on the converter bottom (4)
Groove.
4. the protective case brick of a kind of converter bottom blowing air brick described in claim 3, it is characterised in that described raised for by multistage
The circular ring structure that the spaced arc body around circle distribution forms.
A kind of 5. protective case brick of converter bottom blowing air brick described in claim 1, it is characterised in that the protective case brick body
(1) it is formed in one with the position limiting structure (3).
A kind of 6. protective case brick of converter bottom blowing air brick described in claim 1, it is characterised in that the protective case brick body
(1) outline of cross section is sector, and the outline of the longitudinal section of the protective case brick body (1) is trapezoidal.
7. the protective case brick of a kind of converter bottom blowing air brick described in claim 3, it is characterised in that described raised described
The size of converter bottom (4) thickness direction is less than the thickness of the converter bottom (4).
8. the protective case brick of a kind of converter bottom blowing air brick described in claim 1, it is characterised in that the through hole (2) is straight
Tubular, the porous core brick (6) are located in the through hole (2).
A kind of 9. protective case brick of converter bottom blowing air brick described in claim 8, it is characterised in that the porous core brick (6)
For cylinder, the inwall of the through hole (2) is engaged with the periphery of the porous core brick (6).
A kind of 10. protective case brick of converter bottom blowing air brick described in claim 9, it is characterised in that the porous core brick (6)
Inside there is the hollow stainless steel capillary that multiple parallel verticals are set, all capillaries are rectangular in a row or circle is set
At the middle part of the cross section of the porous core brick (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720328731.8U CN206814807U (en) | 2017-03-27 | 2017-03-27 | A kind of protective case brick of converter bottom blowing air brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720328731.8U CN206814807U (en) | 2017-03-27 | 2017-03-27 | A kind of protective case brick of converter bottom blowing air brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206814807U true CN206814807U (en) | 2017-12-29 |
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ID=60752962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720328731.8U Active CN206814807U (en) | 2017-03-27 | 2017-03-27 | A kind of protective case brick of converter bottom blowing air brick |
Country Status (1)
| Country | Link |
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| CN (1) | CN206814807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396568A (en) * | 2019-08-23 | 2019-11-01 | 鞍山市和丰耐火材料有限公司 | A kind of cooperation reduces the ultra-large type monoblock type air supply brick of converter terminal carbon oxygen product |
-
2017
- 2017-03-27 CN CN201720328731.8U patent/CN206814807U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396568A (en) * | 2019-08-23 | 2019-11-01 | 鞍山市和丰耐火材料有限公司 | A kind of cooperation reduces the ultra-large type monoblock type air supply brick of converter terminal carbon oxygen product |
| CN110396568B (en) * | 2019-08-23 | 2024-05-14 | 鞍山市和丰耐火材料有限公司 | Ultra-large integral air supply brick for reducing carbon and oxygen accumulation at end point of converter in cooperation |
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