CN207581842U - A kind of bottom hearth of blast furnace structure - Google Patents
A kind of bottom hearth of blast furnace structure Download PDFInfo
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- CN207581842U CN207581842U CN201721663252.8U CN201721663252U CN207581842U CN 207581842 U CN207581842 U CN 207581842U CN 201721663252 U CN201721663252 U CN 201721663252U CN 207581842 U CN207581842 U CN 207581842U
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- refractory lining
- cupola well
- furnace
- hearth
- cooling
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Abstract
The utility model belongs to technical field of metallurgy industry, more particularly to a kind of bottom hearth of blast furnace structure.Include the furnace bottom refractory lining of furnace shell, the cupola well refractory lining being arranged on the inside of furnace shell and setting furnace shell bottom, the furnace shell bottom is equipped with the first cooling body for cooling furnace bottom refractory lining, the second cooling body, second cooling body and the clamping of cupola well refractory lining are equipped between the cupola well refractory lining and furnace shell.The beneficial effects of the utility model are：Second cooling body and cupola well refractory lining link together, and avoid generating gap between the second cooling body and cupola well refractory lining, ensure that heat transfer system is run steadily in the long term, extend the service life of blast furnace.
Description
Technical field
The utility model belongs to technical field of metallurgy industry, more particularly to a kind of bottom hearth of blast furnace structure.
Background technology
Bottom hearth of blast furnace is the key position of blast furnace, and it is about 1400~1600 DEG C to be mainly used for storage and exhaust temperature
Molten iron and slag, also temperature almost do not have higher than 2000 DEG C, blast furnace gas of the pressure more than 0.3MPa full of furnace bottom cupola well
Any material can directly resist the erosion of slag, molten iron and coal gas for a long time, and the longevity of furnace bottom cupola well be essentially relying on it is resistance to
The slag iron solidification layer of fiery inner lining surface generation carries out self-protection.Slag molten iron starts setting temperature about at 1150 DEG C, works as fire resisting
If liner surface temperatures are significantly less than slag iron setting temperature, refractory lining will be protected, this requires there are one
Stable heat-transfer system is low to ensure refractory lining surface temperature.
Traditional furnace bottom hearth structure is as shown in Figure 1, cupola well cooling wall is smooth surface, although cupola well refractory lining and cupola well
Dilatation joint filler is equipped between cooling wall, but is independent from each other between cupola well refractory lining and cupola well cooling wall, cupola well cooling
Wall temperature is low and cupola well refractory lining temperature is high, and the expansion between them will not synchronize substantially, when the generation of cupola well refractory lining is swollen
When swollen, the density between cupola well cooling wall and cupola well refractory lining can be destroyed.It is resistance to that cupola well refractory lining is located at furnace bottom
On fiery liner, the rise of furnace bottom refractory lining can also cause the rise of cupola well refractory lining, at this time cupola well cooling wall not on
Rise, furnace bottom refractory lining, cupola well refractory lining generate relative displacement between cupola well cooling wall and form gap.It is in addition, high
Stove often needs to blowing out repair, and in-furnace temperature can decline at this time, and cupola well refractory lining, furnace bottom refractory lining can be at temperature
Drop generates certain contraction, can be generated again between cupola well cooling wall and cupola well refractory lining, furnace bottom refractory lining different degrees of
Gap, high temperature and pressure coal gas just has an opportunity to enter gap and form thermal resistance when resuming production, and the thermal resistance of coal gas is cupola well fire resisting
450 times or more of liner, furnace bottom refractory lining thermal resistance, huge thermal resistance can be prevented in heat transfer to cupola well cooling wall, so as to
Increase liner surface temperatures, the fusing of slag iron solidification layer is until disappear, slag, molten iron directly contact with refractory lining and make liner
By a degree of erosion, new thermal balance is established until thermal resistance reduction is thinned in refractory lining, it is so repeated multiple times, in fire resisting
Lining is all corroded, and cupola well cooling wall is melted, and cupola well damage, blast furnace is scrapped.
Utility model content
In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of bottom hearth of blast furnace knots
Structure is detached from for solving refractory lining and cupola well cooling wall in the prior art, generates gap when expanding with heat and contract with cold asynchronous,
The problems such as system stability that conducts heat is poor, service life of blast furnace is short.
In order to achieve the above objects and other related objects, the utility model provides a kind of bottom hearth of blast furnace structure, including
The furnace bottom refractory lining of furnace shell, the cupola well refractory lining being arranged on the inside of furnace shell and setting furnace shell bottom, the furnace shell bottom
The second cooling is equipped with equipped with the first cooling body for cooling furnace bottom refractory lining, between the cupola well refractory lining and furnace shell
Mechanism, second cooling body and the clamping of cupola well refractory lining.
The beneficial effects of the utility model are：Second cooling body and cupola well refractory lining link together, and avoid second
Gap is generated between cooling body and cupola well refractory lining, ensure that heat transfer system is run steadily in the long term, extend making for blast furnace
Use the service life.
Further, first cooling body is cooling water pipe, and second cooling body is cupola well cooling wall.
Further, the inside of the cupola well cooling wall is equipped with dovetail groove, and the outside of the cupola well refractory lining is equipped with and swallow
The protrusion of stern notch clamping.
Further, the cupola well cooling wall includes multiple coolings arranged along furnace shell short transverse and furnace shell circumferencial direction
Portion, two neighboring cooling end head and the tail splice, and the inside of each cooling end is equipped at least one dovetail groove, each dovetail groove pair
Cupola well refractory lining there are one should clamping.
Advantageous effect using above-mentioned further scheme is：Connection structure is simple, not easily to fall off, is locked without other components
It is fixed, it effectively avoids and generates gap when being relatively moved between cupola well cooling wall and cupola well refractory lining because expanding with heat and contract with cold, carry
The high stability of heat transfer system.
Further, the first dilatation joint filler is equipped between the two neighboring cooling end, is by the first dilatation joint filler
Expanding with heat and contract with cold for cooling end provides certain deformation space, is formed simultaneously sealing structure and coal gas is prevented to enter gap.
Further, the second dilatation joint filler, second dilatation joint are equipped between the two neighboring cupola well refractory lining
By being become larger close to one end of cupola well cooling wall to one end far from cupola well cooling wall, the second dilatation joint filler of setting is filler
Expanding with heat and contract with cold for cupola well refractory lining provides certain deformation space, and the second dilatation joint filler uses gradual change gap so that cupola well
During refractory lining expanded by heating, self-closed gap.
Further, multiple cupola well refractory linings form rough hearth wall face, are conducive to fixed slag iron and coagulate
Gu layer so that slag iron solidification layer is more stable, not easily to fall off.
Further, the structure of the furnace bottom refractory lining is up-small and down-big self-locking structure, and furnace bottom refractory lining and stove
Third dilatation joint filler is equipped between cylinder refractory lining, prevents furnace bottom refractory lining from penetrating into the big molten iron of density using self-locking structure
Floating is generated afterwards, and setting third dilatation joint filler avoids driving on cupola well refractory lining due to furnace bottom refractory lining is expanded and gone up
Rise.
Further, the bottom of the furnace shell is equipped with steel plate of furnace hearth, and the furnace bottom refractory lining is mounted on steel plate of furnace hearth, and
Heat insulating casting material is equipped between furnace bottom refractory lining and steel plate of furnace hearth, setting heat insulating casting material effectively prevents furnace heat from passing to
On steel plate of furnace hearth, damage steel plate of furnace hearth is avoided.
Further, the cupola well refractory lining is any one in graphite brick or brick fuel or silicon carbide brick, the furnace bottom
Refractory lining is any one in graphite brick or brick fuel or silicon carbide brick, is conducive to carry using the refractory material of high heat conductance
The stability of high heat transfer system.
Description of the drawings
Fig. 1 is the structure diagram of traditional burner bottom hearth structure；
Fig. 2 is the structure diagram of the bottom hearth of blast furnace structure of the utility model embodiment；
Fig. 3 is the enlarged diagram of local I in Fig. 2；
Fig. 4 is the deployed configuration schematic diagram of the bottom hearth of blast furnace structure of the utility model embodiment.
Piece mark explanation
1 furnace shell；
2 cupola well cooling walls；
3 cupola well refractory linings；
4 first dilatation joint fillers；
5 furnace bottom refractory linings；
6 third dilatation joint fillers；
7 cooling water pipes；
8 heat insulating casting materials；
9 second dilatation joint fillers；
10 slag iron solidification layers；
11 steel plate of furnace hearth.
Specific embodiment
Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by this
Content disclosed by specification understands other advantages and effect of the utility model easily.
It should be clear that cited such as " on ", " under " in this specification, "left", "right", " centre " and " one " term, also
Only understanding rather than to limit the enforceable range of the utility model for ease of narration, relativeness is altered or modified,
In the case where changing technology contents without essence, when being also considered as the enforceable scope of the utility model.
As shown in Figures 2 to 4, the bottom hearth of blast furnace structure of the utility model embodiment, including furnace shell 1, furnace shell top
For cupola well region, furnace shell bottom is furnace bottom area.It is resistance to that the bottom hearth of blast furnace structure further includes the cupola well being arranged on the inside of furnace shell 1
The furnace bottom refractory lining 5 of 1 bottom of fiery liner 3 and setting furnace shell, 1 bottom of furnace shell is equipped with for cooling furnace bottom refractory lining 5
First cooling body is equipped with the second cooling body, the second cooling body and cupola well fire resisting between cupola well refractory lining 3 and furnace shell 1
Liner 3 is clamped.Wherein, the first cooling body is cooling water pipe, and the second cooling body is cupola well cooling wall, and cupola well cooling wall passes through
The connectors such as bolt are fixed on the inside of furnace shell 1, and cast iron or cast steel or cast copper may be used in the ontology material of cupola well cooling wall,
Simple in structure, easily manufactured, cooling efficiency is high, improves the stability of heat transfer system.The bottom of furnace shell 1 is equipped with steel plate of furnace hearth 11,
Furnace bottom refractory lining 5 is mounted on steel plate of furnace hearth 11, and heat insulating casting material 8 is equipped between furnace bottom refractory lining 5 and steel plate of furnace hearth 11.
Cupola well refractory lining 3 is any one in graphite brick or the high heat conductance refractory material such as brick fuel or silicon carbide brick, furnace bottom fire resisting
Liner 5 is any one in graphite brick or the high heat conductance refractory material such as brick fuel or silicon carbide brick.
As shown in Figures 2 to 4, the inside of cupola well cooling wall 2 is equipped with dovetail groove, the outside of cupola well refractory lining 3 be equipped with
The protrusion of dovetail groove clamping is clamped cupola well refractory lining 3 by protrusion and dovetail groove and the assembling of cupola well cooling wall 2 connects
It is connected together, cupola well refractory lining 3 is mounted in dovetail groove, can be synchronized generation is expanded with heat and contract with cold, be avoided cupola well cooling wall 2
It is relatively moved between cupola well refractory lining 3 and generates gap, improve the stability of heat transfer system.Wherein, furnace shell 1 is cylindrical shape
Structure, the cooling end that circumferencial direction of the cupola well cooling wall 2 including multiple short transverses along furnace shell 1 and furnace shell 1 is arranged, adjacent two
A cooling end head and the tail splice, and the first dilatation joint filler 4 are equipped between the stitching portion of two neighboring cooling end, using multiple cooling ends
It is spliced into cupola well cooling wall, and it is cold that the first dilatation joint filler 4 is set in stitching portion for cupola well cooling wall to provide rational heat expansion
Compression deformation space.The inside of each cooling end is equipped at least one dovetail groove, and each dovetail groove corresponds to clamping, and there are one cupola well is resistance to
Fiery liner is equipped with the second dilatation joint filler 9 between two neighboring cupola well refractory lining 3, and the second dilatation joint filler 9 is by close to cupola well
One end of cooling wall 2 to one end far from cupola well cooling wall 2 becomes larger, using the structure design, when cupola well refractory lining 3 by
During thermal expansion, the smaller one end L1 of 9 size of the second dilatation joint filler is first sealed than 9 larger-size one end L2 of the second dilatation joint filler
It closes, so as to fulfill the self-closed in gap, loses mobile space, effectively avoid cupola well refractory lining and be subjected to displacement.It is multiple
Cupola well refractory lining 3 forms rough hearth wall face, and multiple cupola well refractory linings 3, which are assembled into rough structure, to be had
Conducive to the fixation of slag iron solidification layer 10.
As shown in Figures 2 to 4, the structure of furnace bottom refractory lining 5 is up-small and down-big self-locking structure, i.e. furnace bottom refractory lining
The size L4 of 5 bottoms is more than the size L3 at 5 top of furnace bottom refractory lining, using the structure design, effectively prevents density higher
Molten iron penetrate into furnace bottom refractory lining 5 and furnace bottom refractory lining 5 made to generate hydro-planing, furnace bottom refractory lining 5 is prevented to move up.Stove
Bottom refractory lining 5 is arranged on the inside of cupola well refractory lining 3, and third is equipped between furnace bottom refractory lining and cupola well refractory lining
Dilatation joint filler 6 effectively prevents and cupola well refractory lining 3 is driven to generate movement due to furnace bottom refractory lining 5 expands, and improves and passes
The stability of hot systems.
The utility model by the way that cupola well refractory lining and cupola well cooling wall are linked together, realize expand with heat and contract with cold it is same
Step avoids generating gap, forms stable heat transfer system, be conducive to the formation of slag iron solidification layer, solidified by stable slag iron
Layer ensure that the safety of bottom hearth of blast furnace, extend the service life of bottom hearth of blast furnace.
The above embodiments are only illustrative of the principle and efficacy of the utility model, new not for this practicality is limited
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications completed under refreshing and technological thought or change, should be covered by the claim of the utility model.
Claims (10)
1. a kind of bottom hearth of blast furnace structure, it is characterised in that：Including furnace shell, the cupola well refractory lining being arranged on the inside of furnace shell with
And the furnace bottom refractory lining of setting furnace shell bottom, the furnace shell bottom are equipped with the first cooler for cooling furnace bottom refractory lining
Structure is equipped with the second cooling body, second cooling body and cupola well refractory lining between the cupola well refractory lining and furnace shell
Clamping.
2. bottom hearth of blast furnace structure according to claim 1, it is characterised in that：First cooling body is cooling water
Pipe, second cooling body are cupola well cooling wall.
3. a kind of bottom hearth of blast furnace structure according to claim 2, it is characterised in that：The inside of the cupola well cooling wall
Equipped with dovetail groove, the outside of the cupola well refractory lining is equipped with the protrusion being clamped with dovetail groove.
4. a kind of bottom hearth of blast furnace structure according to claim 2, it is characterised in that：The cupola well cooling wall includes more
A cooling end arranged along furnace shell short transverse and furnace shell circumferencial direction, two neighboring cooling end head and the tail splice, each described cold
But the inside in portion is equipped at least one dovetail groove, and each dovetail groove corresponds to clamping, and there are one cupola well refractory linings.
5. a kind of bottom hearth of blast furnace structure according to claim 4, it is characterised in that：The two neighboring cooling end it
Between be equipped with the first dilatation joint filler.
6. a kind of bottom hearth of blast furnace structure according to claim 4, it is characterised in that：The two neighboring cupola well fire resisting
The second dilatation joint filler is equipped between liner, the second dilatation joint filler is by close to one end of cupola well cooling wall to separate cupola well
One end of cooling wall becomes larger.
7. a kind of bottom hearth of blast furnace structure according to claim 4, it is characterised in that：Multiple cupola well refractory linings
Form rough hearth wall face.
8. a kind of bottom hearth of blast furnace structure according to claim 1, it is characterised in that：The knot of the furnace bottom refractory lining
Structure is up-small and down-big self-locking structure, and third dilatation joint filler is equipped between furnace bottom refractory lining and cupola well refractory lining.
9. a kind of bottom hearth of blast furnace structure according to claim 1, it is characterised in that：The bottom of the furnace shell is equipped with stove
Bottom steel plate, the furnace bottom refractory lining are mounted on steel plate of furnace hearth, and are equipped between furnace bottom refractory lining and steel plate of furnace hearth heat-insulated
Castable.
10. a kind of bottom hearth of blast furnace structure according to claim 1, it is characterised in that：The cupola well refractory lining is
Any one in graphite brick or brick fuel or silicon carbide brick, the furnace bottom refractory lining are graphite brick or brick fuel or silicon carbide brick
In any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721663252.8U CN207581842U (en) | 2017-12-04 | 2017-12-04 | A kind of bottom hearth of blast furnace structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721663252.8U CN207581842U (en) | 2017-12-04 | 2017-12-04 | A kind of bottom hearth of blast furnace structure |
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| CN207581842U true CN207581842U (en) | 2018-07-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735672A (en) * | 2019-03-15 | 2019-05-10 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace crucibe catchments water discharge method and device |
| CN110438275A (en) * | 2019-07-23 | 2019-11-12 | 北京首钢股份有限公司 | A kind of blast furnace crucibe pouring procedure and mold |
| CN110669886A (en) * | 2019-11-07 | 2020-01-10 | 中冶京诚工程技术有限公司 | Heat-conducting long-life blast furnace hearth system and control method thereof |
| CN110819750A (en) * | 2019-11-15 | 2020-02-21 | 上海宝冶集团有限公司 | Blast furnace and plugging device for blast furnace shell and cooling wall |
| CN110863072A (en) * | 2019-11-29 | 2020-03-06 | 上海宝冶集团有限公司 | Method for blocking gas leakage of furnace foundation by grouting between blast furnace, furnace hearth and furnace shell and cooling wall |
| CN112553391A (en) * | 2019-09-10 | 2021-03-26 | 宝山钢铁股份有限公司 | Cooling wall brick inlaying structure capable of resisting thermal stress damage |
| CN114350871A (en) * | 2022-01-12 | 2022-04-15 | 中冶华天工程技术有限公司 | Novel hearth cooling structure and mounting method thereof |
| CN115386669A (en) * | 2022-08-19 | 2022-11-25 | 山西太钢不锈钢股份有限公司 | Method for establishing triple-hearth structure of blast furnace |
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2017
- 2017-12-04 CN CN201721663252.8U patent/CN207581842U/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109735672B (en) * | 2019-03-15 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Water collecting and draining method and device for blast furnace hearth |
| CN109735672A (en) * | 2019-03-15 | 2019-05-10 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace crucibe catchments water discharge method and device |
| CN110438275B (en) * | 2019-07-23 | 2021-05-14 | 北京首钢股份有限公司 | Blast furnace hearth pouring method and mold |
| CN110438275A (en) * | 2019-07-23 | 2019-11-12 | 北京首钢股份有限公司 | A kind of blast furnace crucibe pouring procedure and mold |
| CN112553391B (en) * | 2019-09-10 | 2022-06-28 | 宝山钢铁股份有限公司 | Cooling wall brick inlaying structure capable of resisting thermal stress damage |
| CN112553391A (en) * | 2019-09-10 | 2021-03-26 | 宝山钢铁股份有限公司 | Cooling wall brick inlaying structure capable of resisting thermal stress damage |
| CN110669886A (en) * | 2019-11-07 | 2020-01-10 | 中冶京诚工程技术有限公司 | Heat-conducting long-life blast furnace hearth system and control method thereof |
| CN110819750B (en) * | 2019-11-15 | 2021-08-06 | 上海宝冶集团有限公司 | Blast furnace and plugging device for blast furnace shell and cooling wall |
| CN110819750A (en) * | 2019-11-15 | 2020-02-21 | 上海宝冶集团有限公司 | Blast furnace and plugging device for blast furnace shell and cooling wall |
| CN110863072A (en) * | 2019-11-29 | 2020-03-06 | 上海宝冶集团有限公司 | Method for blocking gas leakage of furnace foundation by grouting between blast furnace, furnace hearth and furnace shell and cooling wall |
| CN114350871A (en) * | 2022-01-12 | 2022-04-15 | 中冶华天工程技术有限公司 | Novel hearth cooling structure and mounting method thereof |
| CN115386669A (en) * | 2022-08-19 | 2022-11-25 | 山西太钢不锈钢股份有限公司 | Method for establishing triple-hearth structure of blast furnace |
| CN115386669B (en) * | 2022-08-19 | 2024-02-02 | 山西太钢不锈钢股份有限公司 | Method for establishing triple hearth structure of blast furnace |
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