CN201049954Y - Blast furnace tuyere cover - Google Patents
Blast furnace tuyere cover Download PDFInfo
- Publication number
- CN201049954Y CN201049954Y CNU2007200115797U CN200720011579U CN201049954Y CN 201049954 Y CN201049954 Y CN 201049954Y CN U2007200115797 U CNU2007200115797 U CN U2007200115797U CN 200720011579 U CN200720011579 U CN 200720011579U CN 201049954 Y CN201049954 Y CN 201049954Y
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- CN
- China
- Prior art keywords
- blast furnace
- small sleeve
- tuyere small
- furnace tuyere
- face
- 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.)
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Abstract
The utility model relates to a blast furnace tuyere covering. A cladding made from a high-temperature resistant and / or wear resistant material is arranged on the front end face of the tuyere covering body. The cladding can be made of corundum and can be conveniently replaced. The service life of the tuyere covering is improved by the service life extending of the front end face of the tuyere coving.
Description
Technical field:
The utility model relates to a kind of blast furnace tuyere small sleeve, particularly relates to a kind of by allowing the cooling fluid blast furnace tuyere small sleeve that constituted of mobile truncated cone-shaped main body within it.
Background technology:
Blast furnace tuyere small sleeve is mounted in the member at blast-furnace tuyere position, by little cover can in blast furnace, carry Celsius thousand the degree more than hot blast.Existing blast furnace tuyere small sleeve has the truncated cone-shaped main body of a hollow, and the through hole or the tilting through hole of the central region setting of this main body are hot-air channels, and its periphery is provided with the cavity that allows cooling fluid to flow, and is used to reduce the temperature of tuyere small sleeve.Because blast furnace tuyere small sleeve is installed in the blast-furnace tuyere position, the molten metal erosive simultaneously in being subjected to blast furnace, its inwall also will be subjected to washing away of high pressure gas incessantly, for this reason, blast furnace tuyere small sleeve is an easily worn part, after it damages, can stop stove because change tuyere small sleeve, and then prolong the ironmaking time.
In the prior art, in order to prolong the work-ing life of tuyere small sleeve, tuyere small sleeve adopts the fine copper manufacturing usually, causes the cost of a tuyere small sleeve to want units up to ten thousand.Yet, because of the front end face of tuyere small sleeve will extend in the blast furnace, so, the front end face of blast furnace tuyere small sleeve is the position that directly is subjected to high temperature erosion, particularly when operation of blast furnace is undesired, nearly 1600 ℃ molten metal easily is splashed to the tuyere small sleeve end face in the blast furnace, makes the tuyere small sleeve front end face cause damaging because of the instantaneous heat flow density increases.
No. 1810995 disclosed names of Chinese patent are called " blast furnace tuyere small sleeve " and provide an a kind of example that reduces the tuyere small sleeve cost of manufacture.The mode that this patent adopts front and rear to combine, promptly the pure copper extruding casting moulding is used in the front portion, and the rear portion is by the boiler steel casting.But; even if the boiler steel casting is adopted at the rear portion; though cost is relatively low; because of its front end face does not adopt any sfgd.; also corroded the back by molten steel easily and damage; and the damage of tuyere small sleeve front end face can directly cause integral body to scrap, so the tuyere small sleeve of this kind structure can not prolong its work-ing life.
In addition, Chinese patent has also been announced the technology that a kind of name is called " the blast-furnace tuyere water jacket that the castingin wear-resistant sleeve is arranged " for No. 214211.The scheme that this patent solves the blast-furnace tuyere life-span is to be cast with the high-temperature-resistant layer that one deck is made of silicon carbide on the outer wall of blast furnace tuyere small sleeve, and its meaning is to want to utilize cast layer to solve the problem of its melting loss.But, for blast furnace tuyere small sleeve, no matter its which partly damage, the capital causes whole tuyere small sleeve to be scrapped, so, its front end face and outer wall no less important, the raising of simple a certain unit or part quality can not prolong work-ing life of tuyere small sleeve chronically.And tuyere small sleeve in-service; its front end face is the most impaired position; want to prolong for more time the work-ing life of blast-furnace tuyere; must solve the impaired problem of front end face; so; improve the tuyere small sleeve front end face resistance and high temperature resistance property particularly important that seems, protecting the tuyere small sleeve end face is to improve the tuyere small sleeve important means in work-ing life.
The major ingredient of corundum is an aluminium sesquioxide, can anti-1790 ℃ high temperature, and cost is lower, but, can not adopt the mode of welding to be connected because of between corundum and the copper, so in the prior art, also find the mode that combines and prolong its work-ing life with tuyere small sleeve with corundum.
Summary of the invention:
Task of the present utility model provides the blast furnace tuyere small sleeve that a kind of mode of utilizing wear-resistant and high temperature material to be compounded in damageable zone prolongs its work-ing life.
The blast furnace tuyere small sleeve that the utility model proposed has the truncated cone-shaped main body of a hollow, and the front end face of this main body is provided with by coating high temperature resistant and/or that anti-abrasive material constitutes.
Described coating is to be made of corundum material.Described coating is and the identical or akin annular of body front end face shape, is provided with at least two through holes and can inserts joint pin in this through hole at its periphery, and this joint pin is made of the steel carbon/carbon-copper composite material.
The front end face that the utility model proposes blast furnace tuyere small sleeve truncated cone-shaped main body is provided with the coating that is made of corundum, can anti-1790 ℃ high temperature, so, the front end face of this kind tuyere small sleeve can prevent the erosion of molten iron effectively, and the raising in front end face work-ing life can prolong the work-ing life of tuyere small sleeve; Simultaneously, because of coating is to fix by the mode of welding, so this coating can be changed, with the work-ing life of further raising tuyere small sleeve.
Description of drawings:
Accompanying drawing 1 is the cross-section structure schematic appearance of the embodiment of blast furnace tuyere small sleeve that proposes of the utility model.
Embodiment:
Referring to Fig. 1, this provides the one-piece construction of the embodiment of blast-furnace tuyere that the utility model proposes.Outer wall 12 sealings that this blast furnace tuyere small sleeve has by inwall 11 and this inwall interval predetermined distance are connected back formed truncated cone-shaped main body 1, the middle part of this main body 1 is provided with the air-supply through hole 15 of inclination, is provided with at the periphery of main body 1 and allows cooling fluid mobile inlet 13 and outlet 14 within it.Be provided with the coating 2 that constitutes by corundum material of or akin annular identical with its shape at the front end face 16 of main body 1, coating 2 comprises the identical or close annular of the front end face 16 shapes portion 24 with main body 1, be provided with curved portions 21 at the periphery of annular portion 24 to main body 1 direction bending, and on curved portions 21, be provided with four through holes 22 in uniform way, and in each through hole 22, all being inserted with joint pin 23, joint pin 23 can be made by steel carbon/carbon-copper composite material or welding metallic substance.
When mounted, at first joint pin 23 is inserted in the through hole 22, and then joint pin 23 is fixed on the main body 1, and then coating 2 can be fixed on the front end face 16 of main body 1 by the mode of welding.
Claims (4)
1. blast furnace tuyere small sleeve, truncated cone-shaped main body with a hollow, and this main body is provided with and allows cooling fluid mobile entrance and exit within it, and it is characterized in that: the front end face of this main body is provided with by coating high temperature resistant and/or that anti-abrasive material constitutes.
2. blast furnace tuyere small sleeve according to claim 1 is characterized in that: described coating is to be made of corundum material.
3. blast furnace tuyere small sleeve according to claim 1 and 2 is characterized in that: described coating is and the identical or akin annular of body front end face shape to be provided with at least two through holes and the joint pin that can insert in this through hole at its periphery.
4. blast furnace tuyere small sleeve according to claim 3 is characterized in that: described joint pin is to be made of the steel carbon/carbon-copper composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200115797U CN201049954Y (en) | 2007-04-05 | 2007-04-05 | Blast furnace tuyere cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200115797U CN201049954Y (en) | 2007-04-05 | 2007-04-05 | Blast furnace tuyere cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201049954Y true CN201049954Y (en) | 2008-04-23 |
Family
ID=39336436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200115797U Expired - Fee Related CN201049954Y (en) | 2007-04-05 | 2007-04-05 | Blast furnace tuyere cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201049954Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766711A (en) * | 2012-08-17 | 2012-11-07 | 济钢集团有限公司 | Small inclined tuyere sleeve |
-
2007
- 2007-04-05 CN CNU2007200115797U patent/CN201049954Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766711A (en) * | 2012-08-17 | 2012-11-07 | 济钢集团有限公司 | Small inclined tuyere sleeve |
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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: 20080423 |