CN207581842U - A kind of bottom hearth of blast furnace structure - Google Patents

A kind of bottom hearth of blast furnace structure Download PDF

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Publication number
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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China
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refractory lining
cupola well
furnace
hearth
cooling
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CN201721663252.8U
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胡显波
李少强
贾娟鱼
许俊
王刚
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CISDI Engineering Co Ltd
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CISDI Engineering Co Ltd
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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

A kind of bottom hearth of blast furnace structure
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.
CN201721663252.8U 2017-12-04 2017-12-04 A kind of bottom hearth of blast furnace structure Active CN207581842U (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
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

Cited By (13)

* Cited by examiner, † Cited by third party
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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