CN2623694Y - Compound energy-saving blast furnace tuyere - Google Patents
Compound energy-saving blast furnace tuyere Download PDFInfo
- Publication number
- CN2623694Y CN2623694Y CN 03213566 CN03213566U CN2623694Y CN 2623694 Y CN2623694 Y CN 2623694Y CN 03213566 CN03213566 CN 03213566 CN 03213566 U CN03213566 U CN 03213566U CN 2623694 Y CN2623694 Y CN 2623694Y
- Authority
- CN
- China
- Prior art keywords
- air port
- tuyere
- blast
- furnace tuyere
- blast furnace
- 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
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Abstract
The utility model provides a compound energy-saving blast furnace tuyere, wherein, all internal walls of the tuyere are provided with a heat barrier layer to make the internal walls from into integrity along axial direction; a wearable layer is arranged outside the heat barrier layer; a gradient-structured ceramic wearable layer is formed at the surface of the tuyere through strengthened treatment by means of burning or sintering. Through heat barrier action of the heat barrier layer and a ceramic internal lining, heat loss of hot blast passing through the blast furnace tuyere can be reduced by 40 percent to 50 percent and blast temperature can be increased by 10 degrees to 12 degrees; meanwhile, due to the protection of the ceramic wearable layer at the tuyere, the tuyere can resist erosion of injection matter and charging, thereby having longer service life.
Description
Affiliated field
The utility model relates to the air port of iron-smelting blast furnace, specifically is a kind of energy-conservation, wear-resisting combined type energy-saving blast-furnace tuyere.
Background technology
Blast-furnace tuyere is the necessary key part of blast furnace ironmaking production, it is generally by casting, technologies such as forging and weldering knot are made with red copper, the air port is in high wind-warm syndrome, furnace charge, the environment that injection material washes away is at a high speed worked down, be the perishable parts of rapid wear, be work-ing life of improving the air port and the manufacturing cost that reduces blast-furnace tuyere for a long time, domestic and international a lot of research and production unit were once studied, the air port that produces and used the various ways unlike material, but all be around the cooling of reinforcing blast furnace air port, improve the air port cooling performance, improve and improve the high-temperature behavior and the intensity of blast-furnace tuyere material, make it more high temperature resistant and resist blast furnace burden, injection material and hot blast wear and tear to blast-furnace tuyere and wash away.The blast-furnace tuyere of widespread use at present has following several, the air port that cavity type air port, throughflow tuyere, surface are oozed air port and surface overlaying alloy altogether, the external tubular air port, Lavalle that also has at surface, air port making ceramic jacket, to resist washing away of hot blast and coal dust etc., the domestic research that has the unit of researching and producing of many families to carry out spraying of surface, air port and reinforcement aspect.But the development emphasis point in these air ports also all is to drop on the work-ing life in the cooling performance of strengthening the air port, air port.The purpose of blast-furnace tuyere is to be blown into hot blast to improve the ironmaking effect in blast furnace, if certainly will exchange for the cost that reduces wind-warm syndrome the work-ing life of strengthening the air port merely with cooling performance, this will cause the huge waste of the energy, if 1000 ℃～1300 ℃ hot blast enters blast furnace through the air port, the water temperature of air port heat-eliminating medium be 30 ℃～50 ℃ through the actual measurement hot blast during through the air port its temperature to fall 25 ℃～35 ℃, influence about coke ratio rising 2k/t iron, produce the annual heat-energy losses that draught temperature reduces because hot blast is flowed through of 1000 tonnes of iron works per year for one and reach 50,000 tons more than the coal.As seen how considerable the waste of the energy is.ZL98216566.8 discloses a kind of built-up type air port; its starting point is from improving life-span and purpose of energy saving; its mode is the inwall inlaid heat-insulating layer in the air port; add stainless protecting sheet at thermofin; the starting point in this air port is right; but what it adopted is local embedded structure; at first reduced the inner wall thickness in air port; the intensity in air port is reduced; make its complete processing complexity in addition; main is because this embedded structure makes the air port inwall form the multi-segment structure of unlike material vertically, since the material difference, the thermal expansivity difference; in use certainly will cause two sections damage intensity difference; produce local damage, thereby reduced the work-ing life in air port, do not reach the purpose of its invention.
The purpose of this utility model is exactly to reduce problem at the hot blast temperature that the air port exists, and a kind of combined type energy-saving blast-furnace tuyere is provided, and can reduce the loss of hot blast, can improve the work-ing life in air port again.
The purpose of this utility model is achieved in that at inwall thermal barrier coatings all is set, adds a wearing layer in the outside of thermal barrier coatings.
Concrete structure of the present utility model has, and for thermal resistance, the heat-blocking action that reaches thermal barrier coatings, it is chosen and can resist 1200 ℃ refractory castable, and smashing notes, to form thickness in the air port be the thick thermal barrier coatings of 8mm～15mm.
Concrete structure of the present utility model also has, and that scuff-resistant coating is used is Fe
2O
3Powder, Al powder and additive are preheating to the air port more than 1200 ℃ that to make thickness be 1mm～2mm ceramic layer or adopt Al at the air port internal surface with burning synthesis method
2O
3After mixing, powder and modification organic resin be sprayed on surface, air port ceramic layer at the thick mullite structure of surface, air port generation 1mm～2mm behind 500 ℃ of baking sintering, these two kinds of ceramic layer any surface finish ultimate compression strength 40MPa～45MPa, its stability can resist that hot blast washes away more than 1250 ℃.
Concrete structure of the present utility model also has, and at inlet front end the fixedly boss structure of thermal barrier coatings and scuff-resistant coating is set.
The utility model is owing to all add thermal barrier coatings in the air port, make it form integral body vertically, and it is strengthened, add the wear-resistant ceramic layer in the outside of thermal barrier coatings, make it not only have heat insulation function, reduce the loss of energy, but also have the function of wear-and corrosion-resistant, it is rational in infrastructure, compares with traditional air port to can save energy more than 40%.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is elaborated.
As shown in the figure, 1 inwall all is provided with thermal barrier coatings 2 to the utility model in the air port, adds a wearing layer 3 in the outside of thermal barrier coatings 2.
For thermal resistance, the heat-blocking action that reaches thermal barrier coatings 2, it is chosen and can resist 1200 ℃ refractory castable, and smashing notes, to form thickness in the air port be the thick thermal barrier coatings of 8mm～15mm, and this refractory castable can be combined closely with the air port inwall under action of high temperature.
What scuff-resistant coating 3 of the present utility model adopted is Fe2O3 powder Al powder and additive, the air port is preheating to more than 1200 ℃ to make thickness be 1mm～2mm ceramic layer or adopt the Al2O3 powder and the modification organic resin is sprayed on the surface, air port generates the thick mullite structure of 1mm～2mm on the surface, air port behind 500 ℃ of baking sintering ceramic layer after mixing at the air port internal surface with burning synthesis method, these two kinds of ceramic layer any surface finish, ultimate compression strength is more than 40MPa～45MPa, and its stability can resist that hot blast washes away more than 1250 ℃.
As shown in the figure, 1 front end is provided with the fixedly boss structure of thermal barrier coatings 2 and scuff-resistant coating 3 in the air port.
The utility model is by the improvement to the blast-furnace tuyere structure; thermal barrier coatings is set in the air port; carry out intensive treatment with burning or sintering method on the surface, air port; form the ceramic layer liner of gradient-structure,, make the hot blast calorific loss of blast-furnace tuyere reduce 40%～50% by the thermal boundary effect of thermal barrier coatings; wind-warm syndrome can improve 10 ℃～12 ℃; simultaneously because the protection of air port ceramic layer liner, make the air port can anti-injection material and the washing away of furnace charge, thereby improve the work-ing life in air port.
Claims (4)
1 one kinds of combined type energy-saving blast-furnace tuyeres is characterized in that (1) inwall all is provided with thermal barrier coatings (2) in the air port, add a wearing layer (3) in the outside of thermal barrier coatings (2).
2, a kind of combined type energy-saving blast-furnace tuyere according to claim 1 is characterized in that the thickness of thermal barrier coatings is 8mm～15mm.
3, a kind of combined type energy-saving blast-furnace tuyere according to claim 1, the thickness that it is characterized in that scuff-resistant coating is 1mm～2mm.
4, a kind of combined type energy-saving blast-furnace tuyere according to claim 1 is characterized in that inlet front end is provided with the fixedly boss structure of thermal barrier coatings and scuff-resistant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213566 CN2623694Y (en) | 2003-06-03 | 2003-06-03 | Compound energy-saving blast furnace tuyere |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03213566 CN2623694Y (en) | 2003-06-03 | 2003-06-03 | Compound energy-saving blast furnace tuyere |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2623694Y true CN2623694Y (en) | 2004-07-07 |
Family
ID=34242427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03213566 Expired - Lifetime CN2623694Y (en) | 2003-06-03 | 2003-06-03 | Compound energy-saving blast furnace tuyere |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2623694Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789433B (en) * | 2004-12-16 | 2010-04-07 | 鞍钢股份有限公司 | Long-life energy-saving blast furnace tuyere and its manufacturing method |
| CN102416459A (en) * | 2011-11-28 | 2012-04-18 | 机械科学研究总院先进制造技术研究中心 | Ultrahigh temperature forming mold and manufacturing method thereof |
| CN106906324A (en) * | 2017-04-06 | 2017-06-30 | 首钢总公司 | A kind of heat-insulated layer processing method of blast-furnace tuyere and blast-furnace tuyere |
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
| CN114854916A (en) * | 2022-05-17 | 2022-08-05 | 中冶赛迪工程技术股份有限公司 | Supersonic tuyere injection device and design method |
-
2003
- 2003-06-03 CN CN 03213566 patent/CN2623694Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789433B (en) * | 2004-12-16 | 2010-04-07 | 鞍钢股份有限公司 | Long-life energy-saving blast furnace tuyere and its manufacturing method |
| CN102416459A (en) * | 2011-11-28 | 2012-04-18 | 机械科学研究总院先进制造技术研究中心 | Ultrahigh temperature forming mold and manufacturing method thereof |
| CN106906324A (en) * | 2017-04-06 | 2017-06-30 | 首钢总公司 | A kind of heat-insulated layer processing method of blast-furnace tuyere and blast-furnace tuyere |
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
| CN114854916A (en) * | 2022-05-17 | 2022-08-05 | 中冶赛迪工程技术股份有限公司 | Supersonic tuyere injection device and design method |
| CN114854916B (en) * | 2022-05-17 | 2023-12-29 | 中冶赛迪工程技术股份有限公司 | Supersonic tuyere blowing device and design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ANGANG NEW STEEL ROLLING CO., LTD. Free format text: FORMER OWNER: ANSHAN IRON +. STEEL GROUP CORP. Effective date: 20061208 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: ANGANG STOCK CO., LTD. Free format text: FORMER NAME OR ADDRESS: ANGANG NEW STEEL ROLLING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 114009, No. 63, Wuyi Road, MTR Eastern District, Liaoning, Anshan Patentee after: ANGANG STEEL Co.,Ltd. Address before: 114001 No. 31 Shengli Road, Tiedong District, Liaoning, Anshan Patentee before: Angang New Steel Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20061208 Address after: 114001 No. 31 Shengli Road, Tiedong District, Liaoning, Anshan Patentee after: Angang New Steel Co.,Ltd. Address before: 14001 No. 31 Shengli Road, Tiedong District, Liaoning, Anshan Patentee before: Anshan Iron and Steel Group Co.,Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130603 Granted publication date: 20040707 |