CN203559063U - Blast furnace thin-wall lining - Google Patents
Blast furnace thin-wall lining Download PDFInfo
- Publication number
- CN203559063U CN203559063U CN201320777811.3U CN201320777811U CN203559063U CN 203559063 U CN203559063 U CN 203559063U CN 201320777811 U CN201320777811 U CN 201320777811U CN 203559063 U CN203559063 U CN 203559063U
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- China
- Prior art keywords
- cooling
- blast furnace
- brick
- copper
- furnace shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims abstract description 137
- 239000011449 brick Substances 0.000 claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052802 copper Inorganic materials 0.000 claims abstract description 62
- 239000010949 copper Substances 0.000 claims abstract description 62
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 27
- 238000003466 welding Methods 0.000 claims description 4
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000013461 design Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000011819 refractory material Substances 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Abstract
The utility model relates to a blast furnace thin-wall lining. Bosh lower refractory bricks are supported by both copper cooling plates and a nozzle combined brick; cooling walls and the cooling plates are arranged between the refractory bricks and a blast furnace shell; ramming material is arranged between the cooling wall of cast iron and the refractory bricks; space among the copper cooling wall, the cast iron cooling wall and the blast furnace shell and space between standard bricks and the blast furnace shell are filled with slurry; the copper cooling plates are disposed between the copper cooling wall and the nodular cast iron cooling wall; the copper cooling plates are welded to the blast furnace shell through short pipes and extend into the standard bricks. The cast iron cooling wall or copper cooling wall is replaced by two tiers of cooper cooling plates in the lower portion of the furnace bosh, the thickness of the bosh lower lining and the stability of the brick lining are improved, the service life of a cooler in the area and that of the blast furnace are prolonged accordingly, the problems that the part from the blast furnace nozzle to the bosh lower cooling wall easily damages and is difficult to maintain are solved, cooling strength is improved, and replacement is facilitated.
Description
Technical field
The utility model relates to a kind of blast furnace thin-skinned lining, belongs to iron and steel BF Design field.
Background technology
The blast furnace liner generally using at present mainly contains two kinds of structure formations: a kind of is the thick inner lining structure that adopts cast iron, cast steel or copper cooling plate, and another kind is the thin inner lining structure that adopts the brick wall unification that cast iron and copper cooling wall combine.In the existing blast furnace of China, front one mostly is medium and small blast furnace and adopts, and rear one mostly is large blast furnace and adopts.Along with the enforcement of national industrial policies, medium and small blast furnace is progressively eliminated, and blast furnace maximizes and made the unification of body of heater brick wall, thin-walled inner lining structure obtain wide popularization and application.
Thin-walled inner lining structure adopts copper cooling wall at bosh, furnace bosh and restoration of lower stack, in shaft, top adopt cast-iron cooling wall, in copper cooling wall hot side side spray, be coated with certain thickness special refractories or inlay certain thickness refractory brick, at cast-iron cooling wall, by stove inner side, tumble in certain thickness refractory brick and replace traditional laying bricks.Because refractory materials sprayed coating thickness is compared traditional furnace lining with edge brick layer thickness and built layer thickness attenuate greatly by laying bricks or stones, therefore, the thin-walled inner lining structure type of furnace approaches the operation type of furnace of blast furnace substantially.
Typical thin-skinned lining blast furnace adopts full cooling stave as cooling apparatus, at high heat load region bosh, furnace bosh and restoration of lower stack, adopts copper cooling wall, and other position adopts cast-iron cooling wall.The edge brick of cooling stave only protrudes cooling stave hot side 100-150mm, the thickness of laying bricks of the 1/2(normal thick furnace lining of too late normal thick furnace lining exceedes 400mm.), according to the working conditions at the each position of blast furnace and failure mechanisms, in different regions, adopt the refractory materials of unlike material.Because copper cooling wall has high thermal conductivity, good thermal shock resistance and heat resistanceheat resistant stream impact property, thus increasing thin-skinned lining blast furnace in high heat load area, (restoration of lower stack, furnace bosh, bosh) adopted this kind of cooling apparatus.Blast furnace thin-walled inner lining structure has lot of advantages: the type of furnace is stable, is conducive to Gas Flow and is evenly distributed and operates direct motion; Resistance to material consumption reduces in a large number, saves great amount of investment; Liner is built by laying bricks or stones outward at stove in advance, has shortened construction period; Liner is embedded in cooling stave, and support effect is good; Liner is thin, and stable having played of slag crust protected the effect of liner, thereby extended the work-ing life of blast furnace.
The problem that the traditional thin-walled inner lining structure of current domestic use exists is: due to above bosh position, air port furnace lining excessively thin (250-350mm) and only depend on tuyere combined brick support, therefore, this region furnace lining under the wearing and tearing of long-term furnace charge and high heat load effect easily comes off, and causes cooling stave to be worn very soon or the hazardous condition generation of seepage appears in cooling stave water pipe very fast (the fastest occurred in blast furnace operation 2-3 month) after furnace lining comes off.Once there is these problems, deal with very thornyly, light need damaged pipeline to process, for example by the way of wearing flexible pipe, replace the pipeline of leakage loss, heavy need to carry out repairing inner liner and cooling stave is renovated.And cooling stave is renovated, be very difficult.
Some large blast furnaces are (as Wuhan Iron and Steel Plant 8
#blast furnace) in order to solve the bosh bottom of traditional thin-walled inner liner blast furnace to the defect of part between tuyere combined brick, tuyere zone cooling stave has been substituted to ductile iron cooling stave with copper cooling wall.Although this scheme practical effect is also very good, going into operation from August 1st, 2009, there is not till now the problem that a cooling stave damages in this blast furnace, but tuyere zone cooling stave adopts the investment of copper cooling wall too high, general smelter is probably difficult to accept, Wuhan Iron and Steel Plant 8
#blast furnace is because tuyere zone cooling stave adopts one of copper cooling wall just to increase the direct investment of approximately 2,000 ten thousand yuan to this blast furnace.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of blast furnace thin-skinned lining, overcome the defect in the application of traditional blast furnace thin-skinned lining technology, solved the too fast damage of traditional blast furnace thin-skinned lining, cooling stave water pipe too fast occur seepage and water cooler burn out after not easily changeable problem.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of blast furnace thin-skinned lining, comprise last furnace shell, copper cooling wall, be pressed into mud, special shaped brick, air port, tuyere combined brick and ductile iron cooling stave, described special shaped brick and tuyere combined brick are setting up and down, between described special shaped brick and last furnace shell, be provided with copper cooling wall, and be filled with and be pressed into mud between copper cooling wall and last furnace shell, between copper cooling wall piece and piece, be filled with fender and ramming mass, between described tuyere combined brick and last furnace shell, be provided with ductile iron cooling stave, and be filled with and be pressed into mud between ductile iron cooling stave and last furnace shell, between ductile iron cooling stave piece and piece, be filled with iron filings filler and ramming mass, last furnace shell is run through in described air port successively, be pressed into mud, ductile iron cooling stave and tuyere combined brick, between described special shaped brick and tuyere combined brick, be provided with standard square, between described copper cooling wall and ductile iron cooling stave, be provided with copper cooling plate, described copper cooling plate is between last furnace shell and standard square, and gap-fill is wherein pressed into mud, described copper cooling plate is by short tube and last furnace shell welding, and extend in standard square.
On the basis of technique scheme, the utility model can also do following improvement.
Further, described copper cooling plate is two-layer, and short transverse is and is arranged above and below, and circumference expansion direction is taken a fancy between lower row and is staggered arrangement.
In bosh bottom, to cooling apparatus design local between tuyere combined brick, adopted two-layer copper cooling plate to substitute cast iron or copper cooling wall, do not increasing bed rearrangement blast furnace lining thickness, do not change under the prerequisite of type of furnace size, the thickness of bosh bottom regional area furnace lining is increased to 460mm, although the thickness of furnace lining increases, but because inserting in stove the degree of depth, copper cooling plate want dark (reaching 460mm) and the two-layer employing of the levels angle that staggers to arrange compared with cooling stave, guaranteed that to greatest extent the bricking in this region is supported stable, reduce furnace lining and damaged the speed coming off, thereby play the effect of protection cooling stave.
Because employing welding or flange between copper cooling plate and last furnace shell design are connected, can change easily online outward and overhaul at last furnace shell, overcome cooling stave and be difficult for the online shortcoming of changing and overhauling.
The beneficial effects of the utility model are: the utility model replaces cast-iron cooling wall or copper cooling wall in bosh bottom with two-layer copper cooling plate, the thickness of bosh bottom furnace lining and the stability of bricking have been increased, thereby extended the work-ing life of this region water cooler and blast furnace, solved that blast-furnace tuyere is perishable to bosh bottom cooling stave, maintenance, the difficult problem such as difficult in maintenance.Simultaneously, can also play the effect that increases cooling intensity and be convenient for changing, the cooling apparatus decoration form that this technology adopts ductile iron cooling stave and copper cooling plate to combine at tuyere zone to bosh lower region, can substitute in this region and adopt full copper cooling wall, be applied in big-and-middle-sized blast furnace and can save one-time investment more than 1,000 ten thousand yuan.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
In accompanying drawing, the list of parts of each label representative is as follows:
1, last furnace shell, 2, copper cooling wall, 3, be pressed into mud, 4, special shaped brick, 5, tuyere combined brick, 6, air port, 7, ductile iron cooling stave, 8, copper cooling plate, 9, standard square.
Embodiment
Below in conjunction with accompanying drawing, principle of the present utility model and feature are described, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
As shown in Figure 1, a kind of blast furnace thin-skinned lining, comprise last furnace shell 1, copper cooling wall 2, be pressed into mud 3, special shaped brick 4, air port 6, tuyere combined brick 5 and ductile iron cooling stave 7, described special shaped brick 4 and tuyere combined brick 5 are setting up and down, between described special shaped brick 4 and last furnace shell 1, be provided with copper cooling wall 2, and be filled with and be pressed into mud 3 between copper cooling wall 2 and last furnace shell 1, between described tuyere combined brick 5 and last furnace shell 1, be provided with ductile iron cooling stave 7, and be filled with and be pressed into mud 3 between ductile iron cooling stave 7 and last furnace shell 1, last furnace shell 1 is run through in described air port 6 successively, be pressed into mud 3, ductile iron cooling stave 7 and tuyere combined brick 5, it is characterized in that, between described special shaped brick 4 and tuyere combined brick 5, be provided with standard square 9, between described copper cooling wall 2 and ductile iron cooling stave 7, be provided with copper cooling plate 8, described copper cooling plate 8 is between last furnace shell 1 and standard square 9, and gap-fill is wherein pressed into mud 3, described copper cooling plate 8 welds by short tube and last furnace shell 1, and extend in standard square 9.
Described copper cooling plate 8 is two-layer, is and is arranged above and below.Its short transverse is and is arranged above and below, and circumference expansion direction is taken a fancy between lower row and is staggered arrangement.
In bosh bottom, to cooling apparatus design local between tuyere combined brick 5, adopted two-layer copper cooling plate 8 to substitute cast iron or copper cooling wall 2, do not increasing under the prerequisite of bed rearrangement blast furnace lining thickness and type of furnace size, the thickness of bosh region furnace lining is increased to 460mm, although the thickness of furnace lining increases, but because inserting in stove the degree of depth, copper cooling plate 8 want dark (reaching 460mm) and the two-layer employing of the levels angle that staggers to arrange compared with cast iron or copper cooling wall 2, guaranteed that to greatest extent the bricking in this region is supported stable, reduce furnace lining and damaged the speed coming off, thereby play the effect of protection cooling stave.
Owing to adopting welding or flange to be connected between 1 design of copper cooling plate 8 and last furnace shell, can change easily online and overhaul last furnace shell 1 is outer, overcome cast iron or copper cooling wall 2 is difficult for the online shortcoming of changing and overhauling.
Embodiment
The present invention is at 2 1600m
3on blast furnace, use blast furnace useful volume 1600m
3, establish 24 air ports, 2 iron mouths.
1) cooling apparatus
For the nearly production practical situation of domestic thin-walled inner liner blast furnace during the last ten years, in bosh bottom, to cooling apparatus design local between tuyere combined brick, adopted two-layer copper cooling plate 8, be convenient to the replacing of this region cooling element and stablize the furnace lining in this region, furnace bottom to furnace throat lower edge arranges 13 sections of cooling staves altogether.According to different working conditions and the load of heats in longitudinal each region in stove, adopt the cooling stave of different structure type and unlike material.
Furnace bottom and cupola well adopt 3 sections of low-chromium cast-iron cooling staves.
Tuyere zone (the 4th section) adopts light face ductile iron cooling stave.
Bosh (the 5th section), furnace bosh (the 6th section), restoration of lower stack (the 7th section) all adopt individual layer water-cooled 4 passage rolling copper cooling walls, and cooling stave hot side is provided with dovetail-indent.Totally 6 sections of shaft middle and upper part cooling staves.The 8th section, Double water-cooled edge brick ductile iron cooling stave; 9-12 section is individual layer water-cooled edge brick ductile iron cooling stave, and the 13rd section is reverse buckling type individual layer water-cooled edge brick ductile iron cooling stave.
Furnace throat adopts water-cooled furnace throat steel brick.Body material is cast steel.
2) blast furnace lining
Furnace bottom, cupola well region, the design adopts domestic ceramic cup+water-cooled brick fuel cupola well, bottom construction.
In whole tuyere zone, all adopt bulk modular tile to build by laying bricks or stones, with the stability of reinforcing structure.Take measures simultaneously, optimize tuyere zone light face ductile iron cooling stave and bosh copper cooling wall junction bricking structure design: by outer the moving (not changing type of furnace size) of bosh bottom furnace shell break, strengthened the thickness of this region bricking, be aided with the copper cooling plate that the two-layer angle that staggers is arranged, make bosh bottom to bricking stability local between tuyere combined brick obtain very large improvement.
5-7 section copper cooling wall hot side adopts Si
3n
4-SiC brick, thickness is 150mm.
8-10 section ductile iron cooling stave, edge brick adopts Si
3n
4-SiC brick, thickness is 150mm.
11st, 12 sections of ductile iron cooling staves, edge brick adopts and soaks phosphoric acid clay brick.
The 13rd section of reverse buckling type individual layer water-cooling casting iron cooling stave, edge brick adopts Si
3n
4-SiC brick.
Described 1600m
3operation of blast furnace is normal, uses the air port of this technology stable to bosh lower region liner, does not occur the situation that cooling stave and cooling plate damage.
Investment of the present invention, compared with traditional thin-walled inner liner blast furnace, adopts the blast furnace investment of copper cooling wall to reduce approximately 1,500 ten thousand yuan compared with region, air port.Save a large amount of repair and maintenance expenses simultaneously, reduced the labour intensity of service worker.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
1. a blast furnace thin-skinned lining, comprise last furnace shell (1), copper cooling wall (2), be pressed into mud (3), special shaped brick (4), air port (6), tuyere combined brick (5) and ductile iron cooling stave (7), described special shaped brick (4) and tuyere combined brick (5) are setting up and down, between described special shaped brick (4) and last furnace shell (1), be provided with copper cooling wall (2), and be filled with and be pressed into mud (3) between copper cooling wall (2) and last furnace shell (1), between described tuyere combined brick (5) and last furnace shell (1), be provided with ductile iron cooling stave (7), and be filled with and be pressed into mud (3) between ductile iron cooling stave (7) and last furnace shell (1), last furnace shell (1) is run through in described air port (6) successively, be pressed into mud (3), ductile iron cooling stave (7) and tuyere combined brick (5), it is characterized in that, between described special shaped brick (4) and tuyere combined brick (5), be provided with standard square (9), between described copper cooling wall (2) and ductile iron cooling stave (7), be provided with copper cooling plate (8), described copper cooling plate (8) is positioned between last furnace shell (1) and standard square (9), and gap-fill is wherein pressed into mud (3), described copper cooling plate (8) is by short tube and last furnace shell (1) welding, and extend in standard square (9).
2. blast furnace thin-skinned lining according to claim 1, is characterized in that, described copper cooling plate (8) is two-layer, is and is arranged above and below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777811.3U CN203559063U (en) | 2013-11-29 | 2013-11-29 | Blast furnace thin-wall lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320777811.3U CN203559063U (en) | 2013-11-29 | 2013-11-29 | Blast furnace thin-wall lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203559063U true CN203559063U (en) | 2014-04-23 |
Family
ID=50508794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320777811.3U Expired - Lifetime CN203559063U (en) | 2013-11-29 | 2013-11-29 | Blast furnace thin-wall lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203559063U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236313A (en) * | 2014-10-10 | 2014-12-24 | 上海宝钢铸造有限公司 | Transverse staggered arrangement method for blooming furnace cooling walls |
| CN106755680A (en) * | 2017-01-12 | 2017-05-31 | 安徽马钢工程技术集团有限公司 | A kind of middle-size and small-size heavy wall blast furnace furnace wall remodeling method and its structure |
| CN115505665A (en) * | 2022-10-08 | 2022-12-23 | 中冶华天南京工程技术有限公司 | High-efficiency long-life furnace hearth tuyere combined brick |
-
2013
- 2013-11-29 CN CN201320777811.3U patent/CN203559063U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236313A (en) * | 2014-10-10 | 2014-12-24 | 上海宝钢铸造有限公司 | Transverse staggered arrangement method for blooming furnace cooling walls |
| CN104236313B (en) * | 2014-10-10 | 2016-02-17 | 上海宝钢铸造有限公司 | The laterally staggered method of iron-smelting furnace cooling wall |
| CN106755680A (en) * | 2017-01-12 | 2017-05-31 | 安徽马钢工程技术集团有限公司 | A kind of middle-size and small-size heavy wall blast furnace furnace wall remodeling method and its structure |
| CN115505665A (en) * | 2022-10-08 | 2022-12-23 | 中冶华天南京工程技术有限公司 | High-efficiency long-life furnace hearth tuyere combined brick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
|
| CX01 | Expiry of patent term |