CN201463502U - Pelletizing shaft furnace shell - Google Patents
Pelletizing shaft furnace shell Download PDFInfo
- Publication number
- CN201463502U CN201463502U CN2009201282688U CN200920128268U CN201463502U CN 201463502 U CN201463502 U CN 201463502U CN 2009201282688 U CN2009201282688 U CN 2009201282688U CN 200920128268 U CN200920128268 U CN 200920128268U CN 201463502 U CN201463502 U CN 201463502U
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- China
- Prior art keywords
- protective film
- shaft furnace
- layer
- film layer
- furnace
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- Expired - Fee Related
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
A pelletizing shaft furnace shell comprises a steel plate layer and a refractory layer. A protective film layer is arranged between the steel plate layer and the refractory layer and is combined by a tortoise shell net with the supporting function and shaft furnace spray coating which is sprayed on the tortoise shell net. Further, an expansion joint is arranged on the protective film layer, and vent holes are arranged in the protective film layer. In the utility model, the service life of the protective film layer is increased. Compared with the original protective layer with the asbestos wire gauze structure, the protective film layer which is combined by the tortoise shell net and the spray coating has the advantages that the wear-resisting property and strength are higher, the high-temperature resistance and high-pressure resistance are better, the stability is good, the protective film layer is not easily penetrated under high temperature, the maintenance cost is reduced, the production is maintained, the safety performance is further improved, and the application range is wider.
Description
Technical field
The utility model relates to the employed shaft furnace of a kind of smelting palletizing, is specifically related to a kind of palletizing shaft furnace furnace shell that is provided with the sprayed protection rete.
Background technology
The ball body of powder of iron ore nodulizing is one of efficient, energy-conservation key technology of blast furnace ironmaking, after the iron-smelting raw material pellet raw ball is made, is transported to the ripe ball of palletizing shaft furnace roasting.Shaft furnace is the core of roasting apparatus, has simple in structure, small investment, thermal efficiency height, convenient, the operating rate advantages of higher of operating maintenance.
Shaft furnace in use because stock column moves from top to down, forms the washing away of stove inwall, and makes inwall constantly be worn, and the air-flow of HTHP moves from bottom to top simultaneously, with stock column and body of heater strong heat exchange is arranged, thereby shaft furnace is worn out easily.Be illustrated in figure 1 as the structure cutaway view of present shaft furnace body of heater now, the shaft furnace furnace shell is made of outer field steel plate layer 1, flame retardant coating 2 and asbestos gauge 3, asbestos gauge 3 is between steel plate layer 1 and flame retardant coating 2, generally, can keep out most high temperature and high pressure by asbestos gauge 3 and flame retardant coating 2, but, because asbestos gauge has only the time about eight months in the following life-span of hot environment, and flame retardant coating can use more than a year and a half, make to distinguish within a certain period of time and change asbestos gauge and flame retardant coating separately that each maintenance all can cause blowing out to stop production; And, because flame retardant coating normally is made of refractory brick, there is the slit between brick and the brick, its slit is burnt by flame after using a period of time, thermal-flame and high pressure draught in the stove act directly on the asbestos gauge, asbestos gauge is also burnt fast, cause temperature too high even rubescent, distortion in many places on the furnace body outer wall thus, the phenomenon that race wind leaks out is serious.At this situation, conventional method is to handle with the mode of grouting, but still can't eliminate these problems, and maintenance cost is high too.
The utility model content
Take place to run wind easily, leak out and the deficiency of furnace shell high temperature deformation at the aging back of shaft furnace body of heater in the prior art, the purpose of this utility model provide a kind of have high temperature resistant, high pressure resistant, and abrasion resistance is good, intensity is high, and maintenance cost is lower, the palletizing shaft furnace furnace shell that service life is long.
The technical solution of the utility model: the palletizing shaft furnace furnace shell comprises steel plate layer and flame retardant coating; Be provided with protective film between steel plate layer and flame retardant coating, described protective film is by passive hexsteel and is sprayed on shaft furnace spray paint be combined on the hexsteel.
Further, described protective film is provided with dilatation joint.
Be provided with passage in the described protective film.
Further again, protective film is provided with equally spaced some dilatation joints, and the spacing distance between the described dilatation joint is 1m～2m.
The passage that is provided with in protective film is an alveolate texture, and its diameter is 4mm～6mm, and is spaced apart 150mm～230mm between the adjacent passage.
The degree of depth of described passage is 1/2～1/3 of a protective film thickness.
With respect to prior art, the utlity model has following advantage:
1, prolonged the service life of protective film, with respect to original asbestos gauge structure protective layer, adopt hexsteel to combine formed protective film with spray paint and have higher anti-wear performance and better intensity, high temperature resistant better with high voltage performance, good stability is not easy to be penetrated by high temperature, and its safe handling time can reach more than 2 years, with respect to the safe-use period of asbestos gauge protective layer about eight months, the life-span of having improved furnace shell greatly;
2, reduced maintenance cost, after adopting protective film of the present utility model, the life-span of protective film and fire brick layer is basic identical, conveniently carry out unified replacing, the number of times and the time of blowing out have been reduced, more help keeping production, and with respect to the processing mode that adopts grouting, its cost reduces greatly;
3, structure is firm, and security further improves, and the scope of application is wider.
Description of drawings
Fig. 1 is the structure cutaway view of the palletizing shaft furnace furnace wall of prior art;
Fig. 2 is the structure cutaway view of palletizing shaft furnace furnace shell of the present utility model;
Fig. 3 is the surface texture schematic diagram of protective film of the present utility model.
Among the figure, 1-steel plate layer, 2-flame retardant coating, 3-asbestos gauge, 4-protective film, 5-dilatation joint, 6-passage.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 2, palletizing shaft furnace furnace shell of the present utility model comprises steel plate layer 1 and flame retardant coating 2; Be provided with protective film 4 between steel plate layer 1 and flame retardant coating 2, described protective film 4 is by passive hexsteel and is sprayed on shaft furnace spray paint be combined on the hexsteel.
The utility model is on the basis of existing vertical furnace shell structure (referring to Fig. 1), has removed the asbestos gauge 3 that is clipped between steel plate layer 1 and the flame retardant coating 2, has increased the structure of passive hexsteel.By the mode of spraying, the polynary shaft furnace spray paint of spraying one deck forms protective film 4 on hexsteel again.The shaft furnace spray paint that is adopted can adopt prior art, have friction resistant, high temperature resistant, withstand voltage strong distinguishing feature, its refractoriness under load can reach 1290 ℃, compressive resistance is up to 116.5MPa after roasting under 1300 ℃ the hot environment, have stability preferably, can satisfy the instructions for use of shaft furnace fully.Described hexsteel can adopt wire quality, in order to strengthen its structure steadiness, further reinforces by welding at the link position of hexsteel and flame retardant coating, makes the whole construction face form the integral body of a mutual tractive.Then, spray paint on hexsteel, spray paint and hexsteel grid form the protective film of combining closely.This structure has strengthened protection film strength and corrosion resistance, helps prolonging the life-span of shaft furnace.
To further improvement of the utility model, protective film 4 is provided with dilatation joint 5, has reserved the space for the protective film expanded by heating of spraying by dilatation joint, can prevent to destroy protective film because of the hot thermal expansion distortion that the spray paint expanded by heating produces.
Also be provided with passage 6 in protective film 4, purpose is to make the air in the protective film to discharge.
Optimally, protective film 4 is provided with equally spaced some dilatation joints 5, and the spacing distance between the described dilatation joint 5 is 1m～2m.The spacing distance of dilatation joint is the coefficient of expansion according to sprayed on material, and preferred in conjunction with actual test data, and by uniform interval is set, can effectively avoids sprayed on material to produce in the part and expand excessive and the situation destruction protective film.
Optimally; the passage 6 that is provided with in protective film 4 adopts alveolate texture; its diameter is 4mm～6mm; and be spaced apart 150mm～230mm between the adjacent passage 6; the degree of depth of passage 6 is 1/2～1/3 of protective film 4 thickness; this makes the gas-permeable channels that forms globality on the protective film, can fast the air that comprises in the spray paint be discharged, and prevents to bubble under hot environment in protective film.
According to demand, can also in spray paint, add a small amount of mullite powder,, reduce the dilatancy of protective film simultaneously to increase the lubricity of the protective film that forms after the spraying.
Shaft furnace furnace shell of the present utility model can solve fundamentally that shaft furnace runs wind, leaks out, the phenomenon of rubescent distortion, has prolonged the life-span of shaft furnace protective film, has reduced maintenance cost.
Claims (6)
1. the palletizing shaft furnace furnace shell comprises steel plate layer (1) and flame retardant coating (2); It is characterized in that, be provided with protective film (4) between steel plate layer (1) and flame retardant coating (2), described protective film (4) is by passive hexsteel and is sprayed on shaft furnace spray paint be combined on the hexsteel.
2. palletizing shaft furnace furnace shell according to claim 1 is characterized in that, described protective film (4) is provided with dilatation joint (5).
3. palletizing shaft furnace furnace shell according to claim 1 is characterized in that, is provided with passage (6) in the described protective film (4).
4. palletizing shaft furnace furnace shell according to claim 2 is characterized in that, protective film (4) is provided with equally spaced some dilatation joints (5), and the spacing distance between the described dilatation joint (5) is 1m～2m.
5. palletizing shaft furnace furnace shell according to claim 3 is characterized in that, the passage (6) that is provided with in protective film (4) is an alveolate texture, and its diameter is 4mm～6mm, and is spaced apart 150mm～230mm between the adjacent passage (6).
6. according to claim 3 or 5 described palletizing shaft furnace furnace shells, it is characterized in that the degree of depth of described passage (6) is 1/2～1/3 of protective film (a 4) thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201282688U CN201463502U (en) | 2009-07-30 | 2009-07-30 | Pelletizing shaft furnace shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201282688U CN201463502U (en) | 2009-07-30 | 2009-07-30 | Pelletizing shaft furnace shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201463502U true CN201463502U (en) | 2010-05-12 |
Family
ID=42390853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201282688U Expired - Fee Related CN201463502U (en) | 2009-07-30 | 2009-07-30 | Pelletizing shaft furnace shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201463502U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145938A (en) * | 2019-06-10 | 2019-08-20 | 苏州鼎安科技有限公司 | A kind of multilayer assembled electric stove hearth |
| WO2022100562A1 (en) * | 2020-11-10 | 2022-05-19 | 山东鲁阳节能材料股份有限公司 | Construction method for fiber lining surface of ethylene cracking furnace |
| RU2802415C1 (en) * | 2020-11-10 | 2023-08-28 | Луян Энерджи-Сэйвинг Материалз Ко., Лтд. | Method for producing surface of fibrous lining of ethylene cracking furnace |
-
2009
- 2009-07-30 CN CN2009201282688U patent/CN201463502U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145938A (en) * | 2019-06-10 | 2019-08-20 | 苏州鼎安科技有限公司 | A kind of multilayer assembled electric stove hearth |
| CN110145938B (en) * | 2019-06-10 | 2024-01-19 | 苏州鼎安科技有限公司 | Multi-layer assembled electric furnace hearth |
| WO2022100562A1 (en) * | 2020-11-10 | 2022-05-19 | 山东鲁阳节能材料股份有限公司 | Construction method for fiber lining surface of ethylene cracking furnace |
| JP2023504962A (en) * | 2020-11-10 | 2023-02-08 | 山▲東▼▲魯▼▲陽▼▲節▼能材料股▲フン▼有限公司 | Construction method for fiber lining surface of ethylene cracking furnace |
| RU2802415C1 (en) * | 2020-11-10 | 2023-08-28 | Луян Энерджи-Сэйвинг Материалз Ко., Лтд. | Method for producing surface of fibrous lining of ethylene cracking furnace |
| JP7357760B2 (en) | 2020-11-10 | 2023-10-06 | 山▲東▼▲魯▼▲陽▼▲節▼能材料股▲フン▼有限公司 | Construction method for fiber lining surface of ethylene cracking furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20130730 |