CN201678690U - Blast furnace distributing chute - Google Patents
Blast furnace distributing chute Download PDFInfo
- Publication number
- CN201678690U CN201678690U CN2009203187599U CN200920318759U CN201678690U CN 201678690 U CN201678690 U CN 201678690U CN 2009203187599 U CN2009203187599 U CN 2009203187599U CN 200920318759 U CN200920318759 U CN 200920318759U CN 201678690 U CN201678690 U CN 201678690U
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- CN
- China
- Prior art keywords
- chute
- blast furnace
- protective layer
- material distribution
- chute body
- 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 - Fee Related
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Abstract
The utility model relates to a blast furnace distributing chute, which comprises a semicircle chute body with a goose head body at the end. A wear-resistant lining plate is arranged at the internal side of the chute body. A heat-resistant corrosive gas resistant protective layer is arranged on the external surface of the chute body. The protective layer can reflect part of the radiant heat energy produced by the blast furnace back, thereby reducing the temperature of the distributing chute. A great number of air holes which have isolation effect are reserved in the protective layer. Therefore the distributing chute under the protection of the protective layer has long service life.
Description
Technical field
The utility model relates to a kind of blast furnace material distribution chute that is used for blast-furnace top distributing device.
Background technology
In the production process of blast furnace ironmaking, need be from the blast furnace furnace roof cloth of in blast furnace, feeding, and the used device of charging cloth promptly is a distributor chute.This shows, the residing position of distributor chute is the internal upper part of blast furnace, under normal circumstances, is the working temperature of blast furnace internal upper part environment 300? 00 ℃, can but when blast-furnace smelting is not smooth, reach 600? 000 ℃, make the outside surface of distributor chute will be subjected to pyritous erosion in the blast furnace on the one hand, also will be subjected to SO in the stove simultaneously
2, CO, CO
2, H
2SO
3And H
2CO
3Constantly wash away and corrode Deng the deep-etching gas flow, the internal surface of distributor chute will be subjected to the furnace charge abrasion and wash away, and no matter distributor chute is outside surface, or internal surface is impaired, will be subjected to the factor affecting of inside and outside two aspects the work-ing life of distributor chute it scrapped, so.
Distributor chute is the parts that very easily damage that are under the severe environment, after if blast furnace material distribution chute damages, the cost of its maintenance or renewal itself is just very big, more serious problem is to need the damping down blowing out about 24 hours when maintenance or replacing distributor chute, the Direct Loss output value reached 1000? 0,000,000 yuan.
Traditional blast furnace material distribution chute has the semicircle chute body that is welded by stainless steel plate of an end band gooseneck boom body, and chute body inboard is provided with abrasion-proof backing block.Though this kind distributor chute is provided with abrasion-proof backing block in the inboard, the ability that makes it possess anti-furnace charge abrasion and wash away, the part just has intergranular crack to exist in the stainless steel plate welding process but owing to adopt, the distributor chute of this kind material can cause its stress to strengthen in the atmosphere of high temperature and strong temperature variation, cause that easily distributor chute is out of shape or is prone to the crackle of the intensity of influence own, and semicircle chute body damage can make distributor chute scrap equally, so the distributor chute of this kind structure is shorter work-ing life.
Mistaken ideas of the prior art are to prolong its work-ing life with the mode that improves the inboard heat-proof corrosion-resistant of distributor chute, and the name that is called " blast furnace material distribution chute " and Chinese patent CN2703763Y bulletin as the name of Chinese patent 201232066Y bulletin is called the example that " a kind of blast furnace rotation distributor chute " all is the inboard wear and shock-resistant of concrete solution distributor chute that provides.The distributor chute heat resisting temperature of stainless-steel sheet weldering system is about 450 ℃, since the increasing of blast-furnace smelting amount, 450 ℃ of heat resisting temperature incompatibility production requirements.
For this reason, a kind of name of Chinese patent 201136874Y bulletin is called " high temperature resistant blast furnace material distribution chute " proposition a solution.This distributor chute is to be compounded with refractory materials at the back of metal shell, promptly be provided with crisscross dividing plate at the back of metal shell, be divided into some rectangular tiles with back with metal shell, in rectangular tiles, be provided with anchoring piece, refractory masses is compounded in the rectangular tiles, with metal shell dividing plate and firm being combined as a whole of anchoring piece.Though the relative stainless steel of the dividing plate of this distributor chute outside surface setting with anchoring piece, can improve its heat resisting corrosion-proof degree of corrosion, but it is compound that dividing plate that the reason refractory materials is made and stainless steel are difficult for, even if take some technique means to make both can be compound, when furnace temperature is higher, the refractory materials dividing plate also easily comes off, thereby influences its work-ing life.
Summary of the invention
Task of the present utility model provide a kind of utilize self can counter radiation and the heat insulation mode of pore prolong its work-ing life be arranged on the outer protective layer of blast furnace material distribution chute.
The blast furnace material distribution chute that the utility model proposed comprises the semicircle chute body of an end band gooseneck boom body, and chute body inboard is provided with abrasion-proof backing block, and the outside surface of described chute body is provided with the protective layer of heat-and corrosion-resistant gas pickling.
Described protective layer is the outside surface of the chute body that is fixed in by mucus bonding and bolt.
The outside surface of the blast furnace material distribution chute that the utility model proposes is provided with protective layer; this protective layer can partly return the radiant heat energy that blast furnace produced; thereby can reduce the temperature of distributor chute self; simultaneously; after this protective layer put into blast furnace; blast furnace can carry out sintering to this protective layer; because the water glass in the protective layer produces expanded under action of high temperature; make and remain with many pores in the protective layer; and this pore has isolation action, so the distributor chute under the protective layer protection is longer work-ing life; according to detection, the work-ing life of the distributor chute of this kind structure is about 1 year.
Description of drawings
Accompanying drawing 1 is the surface structure synoptic diagram of 1 one embodiment of blast furnace material distribution chute proposed by the invention.
Embodiment
Referring to Fig. 1, this figure provides the overall appearance structure of 1 one embodiment of blast furnace material distribution chute.This blast furnace material distribution chute 1 comprises the semicircle chute body 12 of end band gooseneck boom body 11; be provided with abrasion-proof backing block 13 at chute body 12 internal surfaces; be provided with protective layer 14 at its outside surface, protective layer 14 is to be fixed at the mucus of chute body 12 bonding and bolt 15 these dual modes on the outside surface of chute body 12 by brushing.It is to be used for improving furnace charge to its abrasion and the ability of washing away that the internal surface of blast furnace material distribution chute 1 is provided with abrasion-proof backing block 13, and the protective layer 14 of outside surface setting is to be used for improving its high temperature resistant and etchant gas erosive ability.
Claims (2)
1. blast furnace material distribution chute comprises the semicircle chute body of an end band gooseneck boom body, and chute body inboard is provided with abrasion-proof backing block, it is characterized in that: the outside surface of described chute body is provided with the protective layer of heat-and corrosion-resistant gas pickling.
2. blast furnace material distribution chute according to claim 1 is characterized in that: described protective layer is the outside surface of the chute body that is fixed in by mucus bonding and bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203187599U CN201678690U (en) | 2009-12-28 | 2009-12-28 | Blast furnace distributing chute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203187599U CN201678690U (en) | 2009-12-28 | 2009-12-28 | Blast furnace distributing chute |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201678690U true CN201678690U (en) | 2010-12-22 |
Family
ID=43343742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203187599U Expired - Fee Related CN201678690U (en) | 2009-12-28 | 2009-12-28 | Blast furnace distributing chute |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201678690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061679A (en) * | 2021-04-19 | 2021-07-02 | 中钢集团西安重机有限公司 | Material distribution chute with double-layer composite high-temperature-resistant protective layer and manufacturing method thereof |
-
2009
- 2009-12-28 CN CN2009203187599U patent/CN201678690U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113061679A (en) * | 2021-04-19 | 2021-07-02 | 中钢集团西安重机有限公司 | Material distribution chute with double-layer composite high-temperature-resistant protective layer and manufacturing method thereof |
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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: 20101222 Termination date: 20131228 |