CN109652603A - Half pouring type blast funnace hot blast stove pipeline of one kind and its construction method - Google Patents
Half pouring type blast funnace hot blast stove pipeline of one kind and its construction method Download PDFInfo
- Publication number
- CN109652603A CN109652603A CN201910086611.5A CN201910086611A CN109652603A CN 109652603 A CN109652603 A CN 109652603A CN 201910086611 A CN201910086611 A CN 201910086611A CN 109652603 A CN109652603 A CN 109652603A
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- steel shell
- layer
- pouring
- hot blast
- blast stove
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 239000000835 fiber Substances 0.000 claims abstract description 32
- 239000011449 brick Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000009415 formwork Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000007921 spray Substances 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims description 21
- 238000004873 anchoring Methods 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 239000008267 milk Substances 0.000 claims description 2
- 210000004080 milk Anatomy 0.000 claims description 2
- 235000013336 milk Nutrition 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000004566 building material Substances 0.000 abstract description 3
- 238000005266 casting Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B9/00—Stoves for heating the blast in blast furnaces
- C21B9/10—Other details, e.g. blast mains
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a kind of half pouring type blast funnace hot blast stove pipelines, including steel shell, steel shell to be made of upper steel shell and lower steel shell；It is equipped with masonry construction layer in lower steel shell, the cast bed of material of formed by integrally casting is equipped in the upper steel shell.The invention also discloses a kind of half pouring type blast funnace hot blast stove pipeline construction methods, including reserved pouring hole integral spray；Fibre felt layer, insulating brick-layer, working lining brick layer are successively laid in the sprayed coating surface of lower steel shell；Fibre felt layer is successively laid in the sprayed coating surface of upper steel shell；Install steel shell formwork for placing；Dilatation joint template is installed；Pouring construction etc..The invention has the benefit that pipeline of hot air furnace its underpart of the present invention liner uses traditional building materials and masonry way, upper inner liner uses castable one-time cast-forming, the gap in conventional pipelines structure can be reduced, the generation of weakness zone is avoided, can effectively avoid the top bricking often occurred in pipeline of hot air furnace use process from sinking, be broken phenomena such as even collapsing.
Description
Technical field
The present invention relates to blast furnace corollary equipment technical fields, and in particular to a kind of half pouring type blast funnace hot blast stove pipeline and its
Construction method.
Background technique
Blast furnace corollary equipment hot-blast stove is a kind of high-temperature high-pressure apparatus, and projected life is generally 20~30 years.With blast furnace
The progress of ironmaking technology, Gao Fengwen, high wind pressure, high oxygen-enriched, big blowing operation system are used and are promoted more and more, hot wind
Phenomena such as damaging problem of conduit upper liner is more and more frequent, deforms, ruptures often, falling brick, even collapse, causes heat
Air piping top, which generates, alters the dangerous hidden danger such as wind gas leakage, hot-spot, rubescent deformation, or even occurs to burn the pernicious things such as explosion
Therefore the safety in production of smelting iron and steel enterprise and the service life of hot-blast stove are seriously affected, have become restriction ironmaking development at present
One of key factor.
Hot air duct damaging problem takes place frequently other than quality of materials and masonry quality, mainly by being influenced in structure,
Traditional hot air pipe pipe lining brick ring is built, and structural gap is had between ring and ring, this gap is the weakness of hot air duct
Region, and the connecting portions such as hot-blast outlet, junctions, using combination brick masonry, modular tile production technology is complicated, it is time-consuming and laborious,
And the overall structure for building formation, often appearance contracting brick is not tight under the effect of various thermal stress, top modular tile loosens causes
Situations such as altering wind, collapsing appearance.
Summary of the invention
It is an object of the present invention in view of the deficiencies of the prior art, it is high provide half stable pouring type of a kind of overall structure
Furnace pipeline of hot air furnace and its construction method.
The technical solution adopted by the present invention are as follows: a kind of half pouring type blast funnace hot blast stove pipeline, including steel shell, steel shell is by setting up separately
The upper steel shell of two sides and lower steel shell form above and below face in level；Masonry construction layer, the upper steel are equipped in the lower steel shell
The cast bed of material of formed by integrally casting is equipped in shell.
According to the above scheme, it between cast bed of material and upper steel shell inner wall, has been sequentially arranged along steel shell radially outward direction
Fibre felt layer and spray coating, that is, cast bed of material, fibre felt layer, spray coating and upper steel shell are set gradually.
According to the above scheme, it between masonry construction layer and lower steel shell inner wall, is sequentially arranged along steel shell radially outward direction
There are fibre felt layer and spray coating.
According to the above scheme, the masonry construction layer includes the insulating brick-layer being close to fibre felt layer, and is layed in heat preservation
The working lining brick layer on brick layer surface.
The invention discloses a kind of half pouring type blast funnace hot blast stove pipeline construction methods, comprising the following steps:
Step 1: reserving pouring hole after steel shell lifting welding, and in steel shell inner wall integral spray；
Step 2: the sprayed coating surface in lower steel shell is successively laid with fibre felt layer, insulating brick-layer, working lining brick layer；
Step 3: the sprayed coating surface in upper steel shell is successively laid with fibre felt layer；
Step 4: installing steel shell formwork for placing, is formed between formwork for placing and the inner wall of upper steel shell and pour chamber；
Step 5: installing dilatation joint template inside upper steel shell；
Step 6: pouring construction: intracavitary pouring castable from reserved pouring hole to pouring；
Step 7: sealing pouring hole after the completion of pouring；
Step 8: opening up gas vent exhaust, be in the milk seal vents.
According to the above scheme, in step 1, several anchoring pieces for being used to hang fibrofelt are set in steel shell inner wall, wherein upper steel
The anchoring piece height of shell inner wall welding should exceed 20~40mm of spray coating, and staggered floor arranges.
According to the above scheme, in step 3, anchoring piece flattens after penetrating fibre felt layer, make fibre felt layer in steel shell with
Spray coating is in close contact.
According to the above scheme, in step 4, the erection method of upper steel shell formwork for placing are as follows: set up in pipeline using flitch
Rice font falsework, falsework top are laid with three-ply board, are formed between three-ply board and upper steel shell inner wall and closed pour chamber.
According to the above scheme, axial at interval of the reserved ㄣ font dilatation joint of 6~8m along steel shell.
According to the above scheme, in step 8, a gas vent is reserved at interval of 4~6m in the axial direction at the top of steel shell,
And high-temperature resistant ball valve is installed.
The invention has the benefit that
1. pipeline of hot air furnace its underpart of the present invention liner uses traditional building materials and masonry way, upper inner liner
Using castable one-time cast-forming, pipeline of hot air furnace structure is simplified, reduces the gap in conventional pipelines structure, avoids
The generation of weakness zone can effectively solve the problem that the top bricking often occurred in pipeline of hot air furnace use process is sunk, is broken very
To phenomena such as collapsing；
2. the group that pipeline of hot air furnace of the present invention can reduce the positions such as junctions, hot-blast outlet on pipeline of hot air furnace
The use for closing brick, is greatly lowered difficulty of construction and material cost；
3. the present invention is separated hot air duct castable liner with furnace shell using fibrofelt, it still is able to ensure that furnace shell heat expansion is cold
The deformation of contracting does not influence the overall structure of hot air duct under high temperature；
4. structure of the invention design is rationally, easy for construction.
Detailed description of the invention
Fig. 1 is the configuration schematic diagram of pipeline of hot air furnace.
Fig. 2 is the structural schematic diagram of a specific embodiment of the invention.
Fig. 3 is the sectional schematic diagram of the present embodiment.
Fig. 4 is the formwork for placing scheme of installation of the present embodiment.
Wherein: 1, upper steel shell；2, fibre felt layer；3, spray coating；4, insulating brick-layer；5, working lining brick layer；6, cast bed of material；
7, lower steel shell；8, pouring hole；9, expansion joint；10, dilatation joint；11, falsework；12, three-ply board.
Specific embodiment
For a better understanding of the present invention, the present invention is further described in the following with reference to the drawings and specific embodiments.
Pipeline of hot air furnace is connected to hot-blast stove, and configuration is as shown in Figure 1.Half pouring type blast furnace of one kind as shown in Figures 2 and 3
Pipeline of hot air furnace, including steel shell, steel shell are formed by being divided into level the upper steel shell 1 of two sides and lower steel shell 7 above and below face；Under described
It is equipped with masonry construction layer in steel shell 7, the cast bed of material 6 of formed by integrally casting is equipped in the upper steel shell 1.
Preferably, between 1 inner wall of cast bed of material 6 and upper steel shell, fibre has been sequentially arranged along steel shell radially outward direction
Carpet veneer 2 and spray coating 3 are tieed up, that is, cast bed of material 6, fibre felt layer 2, spray coating 3 and upper steel shell 1 are set gradually.
Preferably, between masonry construction layer and lower 7 inner wall of steel shell, fibre has been sequentially arranged along steel shell radially outward direction
Tie up carpet veneer 2 and spray coating 3；The masonry construction layer includes the insulating brick-layer 4 (for light structures) being close to fibre felt layer 2, with
And it is layed in the working lining brick layer 5 (for heavy structure) on 4 surface of insulating brick-layer, that is, working lining brick layer 5, insulating brick-layer 4, fibre
Dimension carpet veneer 2, spray coating 3 and lower steel shell 7 are set gradually.
In the present invention, after the completion of pipeline of hot air furnace steel shell erecting and welding, face in the level of steel shell (namely steel shell is horizontal
Horizontal plane where orient diameter) it is used as line of demarcation, lower 7 liner of steel shell uses traditional building materials and masonry way, by outer
It inwardly (radially inwardly from steel shell) include spray coating 3, fibre felt layer 2, insulating brick-layer 4, working lining brick layer 5 etc.；Lower steel
7 liner of shell replaces light-weight insulating brick and heavy working lining brick using castable, and integrated poured molding, ecto-entad is (from steel shell diameter
To inward direction) it include spray coating 3, fibre felt layer 2, cast bed of material 6.
A kind of half pouring type blast funnace hot blast stove pipeline construction method, comprising the following steps:
Step 1: reserving pouring hole 8 after steel shell lifting welding, and several anchoring pieces and integral spray are set in steel shell inner wall:
Anchoring piece is welded in steel shell inner wall and mostly V-shaped structure, wherein the anchoring piece height of upper 1 inner wall of steel shell welding should be beyond spraying
3 20~40mm of surface of layer, staggered floor arranges (400~500mm of interlamellar spacing), for hanging fibrofelt；
Step 2: 3 surface of spray coating in lower steel shell 7 is successively laid with fibre felt layer 2, insulating brick-layer 4, working lining brick layer 5；
Step 3: 3 surface of spray coating in upper steel shell 1 is successively laid with fibre felt layer 2；After anchoring piece penetrates fibre felt layer 2
It flattens, it is ensured that fibre felt layer 2 and spray coating 3 in upper steel shell 1 are in close contact, and reuse thin tied silk connection anchoring element anchoring fiber
Felt；
Step 4: installing 1 formwork for placing of steel shell: as shown in figure 4, setting up the mould of meter font in pipeline using flitch etc.
Board mount 11,11 top of falsework are laid with three-ply board 12, between 1 inner wall of three-ply board 12 and upper steel shell (specifically and fibrofelt
Layer 2 between) formed pour chamber；Ensure that template is solid and compact, not material leakage when castable is poured；
Step 5: installation dilatation joint template: upper 1 liner of steel shell is poured using castable, axial at interval of 6~8m along steel shell
Dilatation joint 10 (10 optimum of ㄣ font dilatation joint in actual production) need to be reserved, as shown in Figure 3；Added using 2 blocks of three-ply boards 12
The fibrofelt of 10mm long is set to position and the fixation that need to reserve dilatation joint 10 after being fabricated to dilatation joint template, it is desirable that dilatation joint template
Top connects with the fibre felt layer 2 in upper steel shell 1, and dilatation joint template bottom is connected with the formwork for placing set up, and installs swollen
The position of expansion joint (E.J.) template will avoid the privileged sites such as expansion joint for pipeline 9, junctions, can be provided with plug hole position；
Step 6: pouring construction: using colloidal sol combination mullite pouring material, poured from the reserved upward steel shell 1 of pouring hole 8
It builds；Colloidal sol combination mullite pouring material has the characteristics that medium temperature intensity is high, thermal shock resistance is excellent, exempts from baking；
Step 7: after the completion of pouring, welded seal pouring hole 8；
Step 8: opening up gas vent and mounting ball valve: in the axial direction at interval of the reserved row of 4~6m at the top of steel shell
Stomata installs high-temperature resistant ball valve；Exhaust is closed after the completion of exhaust, and pipeline of hot air furnace after a period of use, is filled as grout hole
Slurry sealing.
Finally it should be noted that these are only the preferred embodiment of the present invention, it is not intended to restrict the invention, although
Referring to embodiment, invention is explained in detail, for those skilled in the art, still can be to aforementioned
Technical solution documented by each embodiment is modified or equivalent replacement of some of the technical features, but it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of half pouring type blast funnace hot blast stove pipeline, which is characterized in that including steel shell, steel shell is by being divided into level above and below face
The upper steel shell of two sides and lower steel shell composition；It is equipped with masonry construction layer in the lower steel shell, is equipped in the upper steel shell and integrally pours
The cast bed of material built.
2. half pouring type blast funnace hot blast stove pipeline as described in claim 1, which is characterized in that in cast bed of material and upper steel shell
Between wall, be sequentially arranged fibre felt layer and spray coating along steel shell radially outward direction, that is, cast bed of material, fibre felt layer,
Spray coating and upper steel shell are set gradually.
3. half pouring type blast funnace hot blast stove pipeline as described in claim 1, which is characterized in that in masonry construction layer and lower steel shell
Between inner wall, fibre felt layer and spray coating have been sequentially arranged along steel shell radially outward direction.
4. half pouring type blast funnace hot blast stove pipeline as claimed in claim 3, which is characterized in that the masonry construction layer include with
The insulating brick-layer that fibre felt layer is close to, and it is layed in the working lining brick layer on insulating brick-layer surface.
5. a kind of half pouring type blast funnace hot blast stove pipeline construction method, which comprises the following steps:
Step 1: reserving pouring hole after steel shell lifting welding, and in steel shell inner wall integral spray；
Step 2: the sprayed coating surface in lower steel shell is successively laid with fibre felt layer, insulating brick-layer, working lining brick layer；
Step 3: the sprayed coating surface in upper steel shell is successively laid with fibre felt layer；
Step 4: installing steel shell formwork for placing, is formed between formwork for placing and the inner wall of upper steel shell and pour chamber；
Step 5: installing dilatation joint template inside upper steel shell；
Step 6: pouring construction: intracavitary pouring castable from reserved pouring hole to pouring；
Step 7: sealing pouring hole after the completion of pouring；
Step 8: opening up gas vent exhaust, be in the milk seal vents.
6. half pouring type blast funnace hot blast stove pipeline construction method as stated in claim 5, which is characterized in that in step 1,
Steel shell inner wall sets several anchoring pieces for being used to hang fibrofelt, wherein the anchoring piece height of upper steel shell inner wall welding should be beyond spraying
20~40mm of layer, and staggered floor arranges.
7. the half pouring type blast funnace hot blast stove pipeline construction method as shown in claim 6, which is characterized in that in step 3, anchor
Firmware flattens after penetrating fibre felt layer, is in close contact fibre felt layer and spray coating in steel shell.
8. half pouring type blast funnace hot blast stove pipeline construction method as stated in claim 5, which is characterized in that in step 4, on
The erection method of steel shell formwork for placing are as follows: set up a meter font falsework in pipeline using flitch, falsework top is laid with
Three-ply board forms between three-ply board and upper steel shell inner wall and closed pours chamber.
9. half pouring type blast funnace hot blast stove pipeline construction method as stated in claim 5, which is characterized in that along steel shell axially every
A ㄣ font dilatation joint is reserved every 6~8m.
10. half pouring type blast funnace hot blast stove pipeline construction method as stated in claim 5, which is characterized in that in step 8,
A gas vent is reserved at interval of 4~6m in the axial direction at the top of steel shell, and high-temperature resistant ball valve is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910086611.5A CN109652603B (en) | 2019-01-29 | 2019-01-29 | Semi-pouring type blast furnace hot blast stove pipeline and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910086611.5A CN109652603B (en) | 2019-01-29 | 2019-01-29 | Semi-pouring type blast furnace hot blast stove pipeline and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109652603A true CN109652603A (en) | 2019-04-19 |
| CN109652603B CN109652603B (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910086611.5A Active CN109652603B (en) | 2019-01-29 | 2019-01-29 | Semi-pouring type blast furnace hot blast stove pipeline and construction method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110791605A (en) * | 2019-11-05 | 2020-02-14 | 中冶武汉冶金建筑研究院有限公司 | Method for preparing pipeline of blast furnace hot blast stove |
| CN110986591A (en) * | 2019-11-22 | 2020-04-10 | 柳州钢铁股份有限公司 | Masonry repair method with refractory material on the back of suspended cylinder of Maerz kiln |
| CN114058760A (en) * | 2021-11-15 | 2022-02-18 | 攀钢集团工程技术有限公司 | Method for quickly replacing local hot air pipeline on hot air pipe of blast furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381869A (en) * | 2011-07-22 | 2012-03-21 | 郑州京华耐火材料实业有限公司 | Integrally-cast blast furnace hot-blast pipeline |
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | Lining masonry structure of hot-air pipeline and lining masonry structure of three-fork of hot-air pipeline |
-
2019
- 2019-01-29 CN CN201910086611.5A patent/CN109652603B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102381869A (en) * | 2011-07-22 | 2012-03-21 | 郑州京华耐火材料实业有限公司 | Integrally-cast blast furnace hot-blast pipeline |
| CN108193010A (en) * | 2018-03-09 | 2018-06-22 | 中冶京诚工程技术有限公司 | Lining masonry structure of hot-air pipeline and lining masonry structure of three-fork of hot-air pipeline |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110791605A (en) * | 2019-11-05 | 2020-02-14 | 中冶武汉冶金建筑研究院有限公司 | Method for preparing pipeline of blast furnace hot blast stove |
| CN110986591A (en) * | 2019-11-22 | 2020-04-10 | 柳州钢铁股份有限公司 | Masonry repair method with refractory material on the back of suspended cylinder of Maerz kiln |
| CN114058760A (en) * | 2021-11-15 | 2022-02-18 | 攀钢集团工程技术有限公司 | Method for quickly replacing local hot air pipeline on hot air pipe of blast furnace |
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| Publication number | Publication date |
|---|---|
| CN109652603B (en) | 2021-01-15 |
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