CN201028509Y - Blast furnace supercharging abrasion-proof coal powder injector - Google Patents
Blast furnace supercharging abrasion-proof coal powder injector Download PDFInfo
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- CN201028509Y CN201028509Y CNU2007200118615U CN200720011861U CN201028509Y CN 201028509 Y CN201028509 Y CN 201028509Y CN U2007200118615 U CNU2007200118615 U CN U2007200118615U CN 200720011861 U CN200720011861 U CN 200720011861U CN 201028509 Y CN201028509 Y CN 201028509Y
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- gun
- blast furnace
- coal powder
- coal
- rifle head
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Abstract
The utility model relates to a specialized coal jet gun for the pulverized coal spraying system in metallurgy ironmaking blast furnace, in particular to a coal jet gun applied in blast furnace with supercharging function and abrasion resisting performance, comprising a gun body and a gun head. The utility model is characterized in that: the gun head consists of a steel pipe and a cermet in the inner lining; the front end of the gun head is bent at a degree between minus 1 and minus 45; the diameter of the gun body is slightly smaller than the diameter of the gun head part. The tail part of the gun body is provided with a manually operated seal ball valve made of stainless steel and the central part of the gun body is provided with a ball valve. The inner bottom wall of the gun head forms an irregular ripple slope. The coal jet gun of the utility model has simple structure and convenient operation; the high temperature heat is greatly in steady; the gun head and the gun body with different diameter increase the spray pressure of the pulverized coal, and the coal flame is 2 to 4 folds of the coal jet gun with single diameter. The ball valve is easy in open whenever needed, so that the operation of the coal jet gun is simplified when is put into and withdrew from the hearth of the blast furnace, no extra move is needed in the operation, and the seal performance is much safer and reliable.
Description
Technical field
The utility model relates to a kind of special-purpose coal powder lance of metallurgical blast furnace breeze blowing system applies, the wear-resisting coal powder lance of particularly a kind of blast furnace supercharging.
Background technology
Coal powder lance for blast furnace is the critical component of metallurgical blast furnace breeze blowing system, coal dust is ejected in the blast furnace burner hearth through coal powder lance by convey coal pipe and flow regulating and controlling valve, current common seamless pipe of coal powder lance for blast furnace employing without exception or common stainless steel pipe, integral body or split welding, there is such phenomenon in the rifle head part that barral of a gun is particularly worked in the blast furnace burner hearth: wearability, heat resistance, the heat endurance deficiency, service life is short, jetting pressure is low, the air port wearing and tearing are big, complicated operation is changed frequently, and the activity duration is long, staff labor intensity is big, directly influences the output that blast furnace is produced, cost and pig iron quality.Seriously restricting the development of furnace coal spraying technology.The present partial monopoly product that uses at some blast furnaces, Bu Fen solution above-mentioned deficiency, indexs such as abrasion resistance and heat resistance are improved limitedly.
Summary of the invention
The purpose of this utility model is: propose the wear-resisting coal powder lance of a kind of blast furnace supercharging, this coal powder lance can reach high life, big jetting pressure, not grind the effect in air port.
According to the wear-resisting coal powder lance of blast furnace supercharging of the present utility model, comprise the body of a gun, rifle head, it is characterized in that the rifle head is made up of the cermet of steel pipe and liner thereof, crooked one-1 ° of rifle head front end～-the 45 degree, body of a gun diameter is slightly less than the diameter of rifle head part.
Be provided with manual stainless steel hard seal ball valve at described body of a gun afterbody, the middle part is provided with ball valve.
Described cermet is the SHS cermet.
The length of described steel pipe and inner liner metal pottery thereof is 300～450mm, and ceramic layer thickness is 2～2.5mm.
Irregular corrugated gradient is formed on the inwall bottom of described rifle head.
The described body of a gun and rifle head steel pipe are the body of a gun and the rifle head steel pipe of OCr25Ni2O heat-resistance stainless steel.
Concrete manufacturing process of the present utility model is:
1 bore, length and manual stainless steel ball valve specification, the structural parameters of ball valve according to blast-furnace technique parameter selection coal powder lance.
2 angle of bend (1 °～-45 °) according to blast furnace operating characteristic selection rifle head front end
3 determine the gradient of rifle head inwall bottom metal ceramic layer according to the bore of coal powder lance.
4 press " the self-propagating high-temperature deadweight separates " technology determines cermet raw material proportioning.
5 determine welding and assembling height by the body of a gun, rifle head diameter difference.
6 finishing
7 product examines
" the wear-resisting coal powder lance of blast furnace supercharging " of the present utility model is simple in structure because of it, material is special, crooked suitable angle and an additional manual stainless steel ball valve and the ball valve of reducing, rifle head front end, fundamentally solve the problem in winding-up mill air port, possessed following advantage simultaneously:
1, the long minimizing changed number of times the life-span: this invention has comprehensive mechanical performances such as wear-resisting, corrosion-resistant, high temperature oxidation resisting, is its longer service life, and it is lower to change frequency, has guaranteed the winding-up of full blast mouth to have reduced damping down number of times and auxiliary labor time.
2, stable the enhancing productivity in position reduces production costs
Because of adopted special raw material to do the rifle head, the body of a gun makes it have higher comprehensive mechanical performance, it is indeformable to work in high temperature, hyperbaric environment for a long time; Simultaneously because reducing and front end bending are greatly improved pressure, coal seedling lengthening has at double improved the fired state of coal dust greatly, can improve injecting coal quantity and realize big winding-up.
3, easy to operate and safe reliable
Owing to adopted instant open type ball valve, simplified mode of operation greatly, guaranteed the sealing and the furnace pressure of blast furnace.Manually the application of stainless steel ball valve makes the adjusting of flow more safe and reliable, has avoided being detained and stopping up, and makes pulverized coal flow smooth more.Alleviated personnel labor, improved labor productivity greatly and reduced labour intensity.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A portion structure for amplifying schematic diagram of Fig. 1.
The specific embodiment
Below in conjunction with the description of drawings specific embodiment of the present utility model.
As shown in Figure 1, 2, according to the wear-resisting coal powder lance of blast furnace supercharging of the present utility model, comprise the body of a gun 3, rifle head 4, described rifle head 4 is made up of steel pipe 5 and inner liner metal pottery 6 thereof, crooked one-1 ° of rifle head 4 front ends～-the 45 degree, the body of a gun 3 diameters are slightly less than the diameter of rifle head 4.
Be provided with manual stainless steel hard seal ball valve 1 at the described body of a gun 3 afterbodys, the middle part is provided with ball valve 2.
Described cermet 6 is the SHS cermet.
The length of described steel pipe 5 and inner liner metal pottery 6 thereof is 300～450mm, and ceramic layer thickness is 2～2.5mm.
Irregular corrugated gradient is formed on the inwall bottom of described rifle head 4.
The described body of a gun 3 and rifle head steel pipe 5 are the body of a gun and the rifle head steel pipe of OCr25Ni2O heat-resistance stainless steel.
The utility model coal powder lance is simple in structure, and is easy to operate, and high high-temp stability significantly improves, and rifle head, the body of a gun adopt different-diameter, and the jetting pressure of coal dust is greatly improved, long 2～4 times of the coal powder lance coal seedling of more single diameter.Ball valve is instant open type, makes that the operation of turnover blast furnace burner hearth of coal powder lance is simpler, need not any additional move during operation, and sealing is more safe and reliable.
Claims (6)
1. the wear-resisting coal powder lance of blast furnace supercharging comprises the body of a gun, rifle head, it is characterized in that described rifle head is made up of the cermet of steel pipe and liner thereof, crooked one-1 ° of rifle head front end～-the 45 degree, body of a gun diameter is slightly less than the diameter of rifle head part.
2. the wear-resisting coal powder lance of blast furnace supercharging according to claim 1 is characterized in that being provided with manual stainless steel hard seal ball valve at described body of a gun afterbody, and the middle part is provided with ball valve.
3. the wear-resisting coal powder lance of blast furnace supercharging according to claim 1 is characterized in that at described cermet be the SHS cermet.
4. the wear-resisting coal powder lance of blast furnace supercharging according to claim 1 is characterized in that the length at described steel pipe and inner liner metal pottery thereof is 300～450mm, and ceramic layer thickness is 2～2.5mm.
5. the wear-resisting coal powder lance of blast furnace supercharging according to claim 1 is characterized in that forming irregular corrugated gradient in the inwall bottom of described rifle head.
6. the wear-resisting coal powder lance of blast furnace supercharging according to claim 1 is characterized in that at the described body of a gun and rifle head steel pipe be the body of a gun and the rifle head steel pipe of 0Cr25Ni20 heat-resistance stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200118615U CN201028509Y (en) | 2007-04-27 | 2007-04-27 | Blast furnace supercharging abrasion-proof coal powder injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200118615U CN201028509Y (en) | 2007-04-27 | 2007-04-27 | Blast furnace supercharging abrasion-proof coal powder injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028509Y true CN201028509Y (en) | 2008-02-27 |
Family
ID=39132720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200118615U Expired - Fee Related CN201028509Y (en) | 2007-04-27 | 2007-04-27 | Blast furnace supercharging abrasion-proof coal powder injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028509Y (en) |
Cited By (2)
| 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 |
| CN112342328A (en) * | 2020-10-20 | 2021-02-09 | 本钢板材股份有限公司 | Blast furnace reinforced wear-resistant coal gun |
-
2007
- 2007-04-27 CN CNU2007200118615U patent/CN201028509Y/en not_active Expired - Fee Related
Cited By (2)
| 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 |
| CN112342328A (en) * | 2020-10-20 | 2021-02-09 | 本钢板材股份有限公司 | Blast furnace reinforced wear-resistant coal gun |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20160427 |