CN202246717U - Wear-proof coal injection gun of blast furnace - Google Patents
Wear-proof coal injection gun of blast furnace Download PDFInfo
- Publication number
- CN202246717U CN202246717U CN2011203372690U CN201120337269U CN202246717U CN 202246717 U CN202246717 U CN 202246717U CN 2011203372690 U CN2011203372690 U CN 2011203372690U CN 201120337269 U CN201120337269 U CN 201120337269U CN 202246717 U CN202246717 U CN 202246717U
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- blast furnace
- steel pipe
- protective layer
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Abstract
The utility model discloses a wear-proof coal injection gun of a blast furnace. The wear-proof coal injection gun comprises a gun body circular tube body, wherein the gun body circular tube body is connected with a steel tube gun tube body after the right side end of the gun body circular tube body is internally spliced, the inner side of the steel tube gun tube body is in a cone contract body shape, the right side end of the steel tube gun tube body is provided with a steel tube spray gun head body which is in a bent tube shape, the inner side wall surface of the steel tube spray gun head body is provided with a wear-proof protective layer and an intermediate layer, the wear-proof protective layer is firmly combined with the inner side wall of the steel tube spray gun head body through the intermediate layer, and the left inner side surface of the wear-proof protective layer is in the cone contract body shape. By adopting the wear-proof coal injection gun of the blast furnace, disclosed by the utility model, the wear-proof performance is stronger, the wear-proof coal injection gun is not easy to wear and damage, the corrosion resistance is better, the frequent replacing rate is reduced, the overhauling and maintaining amount and the consumption are reduced, and the service life is improved.
Description
Technical field:
The utility model relates to pneumatic feeding device, and is particularly a kind of with the supply of fuel of alternated blasting to combustion equipment supplying powder fuel combustion appliance, and the nozzle feed is through the coal spouting gun of pipeline or pipe pneumatic transport bulk material.
Background technology:
Generally being to use straight tube spray gun simple in structure direct supplying powder fuel in blast furnace on the blast furnace, is very much convenient and practical, but that ubiquity spray gun rifle head is straight; Spray gun rifle head inserts that tuyere angle is improper to have certain included angle with blast-furnace tuyere, is prone to cause the wearing and tearing blast-furnace tuyere, even leads to blast-furnace tuyere and burn accident; Wear resistance is relatively poor during spray gun Coal powder spray adjustment coke ratio, damage easy to wear, and erosion resistance is relatively poor; Turnover rate is comparatively frequent, and maintenance maintenance capacity and consumption are bigger, and work-ing life is low particularly outstanding; As the Coal powder spray amount when the lOOKg/min service life of lance average about 40 days; Seriously restricted injecting coal quantity implementing the big blast furnace of oxygen coal like Coal powder spray amount service life of lance when the 150Kg/min only about 5 days, the working efficiency of blast furnace and utilization coefficient are reduced; Thereby influenced the work-ing life of blast furnace; Cause at the cost of blast-furnace smelting higherly, improve Coal powder spray amount, adjustment coke ratio when being difficult to satisfy blast-furnace smelting, improve utilization coefficient requirement, prolong spray gun disposable work-ing life, be difficult to the shortcomings such as needs that satisfy the blast furnace smelting technology development and produce.
For example application number is 00212256.1; Publication number is the Chinese patent " the wear-resisting coal spouting gun of a kind of blast furnace " of 2429745Y; The wear-resisting coal spouting gun of a kind of blast furnace is disclosed; It is made up of body of a gun pipe body (1), antifriction metal (AFM) liner composite bed (4); It is characterized in that: have fire-resistant oxidation resistant after in the right-hand end of body of a gun pipe body (1), pegging graft and connect steel pipe gun barrel body (2); The inboard that fire-resistant oxidation resistant connects steel pipe gun barrel body (2) is the circular cone shape that contracts, and the right-hand end place that connects steel pipe gun barrel body (2) at fire-resistant oxidation resistant has fire-resistant oxidation resistant steel pipe spray gun rifle head body (3), and fire-resistant oxidation resistant steel pipe spray gun rifle head body (3) is the bend pipe shape; On fire-resistant oxidation resistant steel pipe spray gun rifle head body (3) interior sidewall surface, have antifriction metal (AFM) liner composite bed (4), the left side medial surface of antifriction metal (AFM) liner composite bed (4) is the circular cone shape that contracts.Compare with aluminum oxide, antifriction metal (AFM) liner composite bed hardness is not high enough, unreactiveness is not strong.
The utility model content:
The problems referred to above that the purpose of the utility model is to overcome the functions of use existence that pulverized coal injection is robbed in the prior art propose the wear-resisting coal spouting gun of a kind of blast furnace.Adopt the coal powder lance for blast furnace of the utility model, wear resisting property is stronger, is difficult for wear damage; Erosion resistance is better, reduces the frequent rate of changing, and reduces maintenance maintenance capacity and consumption; Improve work-ing life, improve the blast furnace working efficiency, improve the output and the work-ing life of blast furnace; Reduce the blast-furnace tuyere wear rate, reduce the cost of blast-furnace smelting, satisfy blast furnace and when smelting, improve Coal powder spray amount, adjustment coke ratio, improve the utilization coefficient requirement; Prolong disposable work-ing life, satisfy the blast furnace smelting technology development and produce needs, improved the blast furnace smelting technology condition.
The utility model adopts following technical scheme to realize:
The wear-resisting coal spouting gun of a kind of blast furnace; Comprise body of a gun pipe body; The back of pegging graft in the right-hand end of said body of a gun pipe body is connected with steel pipe gun barrel body, and the inboard of said steel pipe gun barrel body is the circular cone shape that contracts, and the right-hand end place of said steel pipe gun barrel body is provided with steel pipe spray gun rifle head body; Said steel pipe spray gun rifle head body is the bend pipe shape; It is characterized in that: said steel pipe spray gun rifle head body interior sidewall surface is provided with wear-resistant protective layer and transition layer, and said wear-resistant protective layer is through transition layer and steel pipe spray gun rifle head body inner side-wall formation mortise, and the left side medial surface of wear-resistant protective layer is the circular cone shape that contracts.
Described wear-resistant protective layer is the corundum ceramic layer.
Described corundum ceramic layer is to form at high temperature more than 2300 ℃.
Described transition layer by red iron oxide, aluminium powder, silica sand through centrifugal and form from climing combustion.
The advantage of the utility model is:
1, adopt the wear-resisting coal spouting gun of blast furnace of the utility model to improve 30% when the Coal powder spray amount is adjusted coke ratio in blast furnace ironmaking process, wear resisting property is stronger, is difficult for wear damage; Erosion resistance is better, has reduced and has changed frequent rate, has reduced maintenance maintenance capacity and consumption; Improved work-ing life, under equal conditions the Coal powder spray amount can improve about 5 months work-ing life when l10Kg/min one 180Kg/min, and the Coal powder spray amount can be brought up to 280Kg/min; Improve the working efficiency of blast furnace greatly, improved the output and the work-ing life of blast furnace, reduced the blast-furnace tuyere wear rate; Reduced the cost of blast-furnace smelting, effect is obviously significantly particularly outstanding, has satisfied blast furnace improves Coal powder spray amount, adjustment coke ratio, raising utilization coefficient when smelting requirement; Prolonged spray gun disposable work-ing life, the needs that satisfied the blast furnace smelting technology development and produced have improved the technical qualification of blast-furnace smelting; And be easy to make to install and apply, simple and compact for structure, advantage such as with low cost.
2, the utility model is employed in corundum ceramic layer that high temperature more than 2300 ℃ forms as wear-resistant protective layer, and aluminum oxide hardness height, unreactiveness, HS and plasticity are good.
Description of drawings:
Fig. 1 is the utility model structural representation
Mark among the figure: 1, body of a gun pipe body, 2, steel pipe gun barrel body, 3, steel pipe spray gun rifle head body, 4, transition layer, 5, wear-resistant protective layer.
Embodiment:
The wear-resisting coal spouting gun of a kind of blast furnace; Comprise body of a gun pipe body 1; The back of pegging graft in the right-hand end of said body of a gun pipe body 1 is connected with steel pipe gun barrel body 2, and the inboard of said steel pipe gun barrel body 2 is the circular cone shape that contracts, and the right-hand end place of said steel pipe gun barrel body 2 is provided with steel pipe spray gun rifle head body 3; Said steel pipe spray gun rifle head body 3 is the bend pipe shape; It is characterized in that: said steel pipe spray gun rifle head body 3 interior sidewall surface are provided with wear-resistant protective layer 5 and transition layer 4, and said wear-resistant protective layer 5 forms mortise through 3 sidewalls in transition layer 4 and the steel pipe spray gun rifle head body, and the left side medial surface of wear-resistant protective layer 5 is the circular cone shape that contracts.
In the utility model, described wear-resistant protective layer 5 is the corundum ceramic layer; Described corundum ceramic layer is to form at high temperature more than 2300 ℃; Described transition layer 4 by red iron oxide, aluminium powder, silica sand through centrifugal and form from climing combustion.
Adopt the wear-resisting coal spouting gun of blast furnace of the utility model to improve 30% when the Coal powder spray amount is adjusted coke ratio in blast furnace ironmaking process, wear resisting property is stronger, is difficult for wear damage; Erosion resistance is better, has reduced and has changed frequent rate, has reduced maintenance maintenance capacity and consumption; Improved work-ing life, under equal conditions the Coal powder spray amount can improve about 5 months work-ing life when l10Kg/min one 180Kg/min, and the Coal powder spray amount can be brought up to 280Kg/min; Improve the working efficiency of blast furnace greatly, improved the output and the work-ing life of blast furnace, reduced the blast-furnace tuyere wear rate; Reduced the cost of blast-furnace smelting, effect is obviously significantly particularly outstanding, has satisfied blast furnace improves Coal powder spray amount, adjustment coke ratio, raising utilization coefficient when smelting requirement; Prolonged spray gun disposable work-ing life, the needs that satisfied the blast furnace smelting technology development and produced have improved the technical qualification of blast-furnace smelting; And be easy to make to install and apply, simple and compact for structure, advantage such as with low cost.
Claims (2)
1. wear-resisting coal spouting gun of blast furnace; Comprise body of a gun pipe body (1); Be connected with steel pipe gun barrel body (2) after pegging graft in the right-hand end of said body of a gun pipe body (1); The inboard of said steel pipe gun barrel body (2) is the circular cone shape that contracts; The right-hand end place of said steel pipe gun barrel body (2) is provided with steel pipe spray gun rifle head body (3), and said steel pipe spray gun rifle head body (3) is the bend pipe shape, it is characterized in that: said steel pipe spray gun rifle head body (3) interior sidewall surface is provided with wear-resistant protective layer (5) and transition layer (4); Said wear-resistant protective layer (5) forms mortise through transition layer (4) and steel pipe spray gun rifle head body (3) inner side-wall, and the left side medial surface of wear-resistant protective layer (5) is the circular cone shape that contracts.
2. the wear-resisting coal spouting gun of a kind of blast furnace according to claim 1 is characterized in that: described wear-resistant protective layer (5) is the corundum ceramic layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203372690U CN202246717U (en) | 2011-09-09 | 2011-09-09 | Wear-proof coal injection gun of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203372690U CN202246717U (en) | 2011-09-09 | 2011-09-09 | Wear-proof coal injection gun of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202246717U true CN202246717U (en) | 2012-05-30 |
Family
ID=46107988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203372690U Expired - Fee Related CN202246717U (en) | 2011-09-09 | 2011-09-09 | Wear-proof coal injection gun of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202246717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962675A (en) * | 2015-07-07 | 2015-10-07 | 张家港市三和金属材料有限公司 | Wear-resisting blast furnace coal-injection coal lance |
-
2011
- 2011-09-09 CN CN2011203372690U patent/CN202246717U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962675A (en) * | 2015-07-07 | 2015-10-07 | 张家港市三和金属材料有限公司 | Wear-resisting blast furnace coal-injection coal lance |
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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: 20120530 Termination date: 20120909 |