CN2701872Y - Hot metal desulfurization lance - Google Patents
Hot metal desulfurization lance Download PDFInfo
- Publication number
- CN2701872Y CN2701872Y CN 200420022313 CN200420022313U CN2701872Y CN 2701872 Y CN2701872 Y CN 2701872Y CN 200420022313 CN200420022313 CN 200420022313 CN 200420022313 U CN200420022313 U CN 200420022313U CN 2701872 Y CN2701872 Y CN 2701872Y
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- outer tube
- spray gun
- molten iron
- tube
- gun
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- Expired - Fee Related
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A molten iron desulfurization spray gun of the utility model comprises a casing, an outer tube, an inner tube and a casing tube. The outer tube is arranged in the casing. The fire resistive material is filled between the outer tube and the casing. The outer tube is sheathed with the casing tube. The inner tube is arranged in the outer tube. The interstice between the inner tube and the outer tube of the head of the spray gun is gradually decreased. When the molten iron desulfurization spray gun is used, the desulfurizer is sprayed from the inner tube; the gas with higher pressure is sprayed by the outer tube; at the exit of the spray gun, the diameter of the outer tube is reduced; the gas is accelerated here; a layer of air film is formed at the exit of the desulfurizer, which can reduce the conduction of heat of the molten iron for the inner tube; therefore, the accident that the gun is plugged is decreased and the activity ratio of the desulfurization device is enhanced. Furthermore, the head of the spray gun can be disassembled and the replacement can be convenient.
Description
Technical field
The utility model relates to molten iron pretreatment desulfurizing in the process for making.
Background technology
MAGNESIUM METAL is very strong iron melt desulfurizing agent, and unit consumption is low, and the quantity of slag is few, and temperature drop is low, so hot metal pretreatment has obtained more and more widely application as sweetening agent to desulfurizing iron with MAGNESIUM METAL.But the fusing point of MAGNESIUM METAL only has 650 ℃, and boiling point is 1110 ℃, and molten iron temperature is generally between 1300～1400 ℃ when handling, and magnesium is easy to the gasification loss under this temperature.The magnesium sulfur removal technology mostly adopts the mode of winding-up that magnesium desulfurizer is imported in the molten iron for this reason.
The structure of desulphurization spray gun is the most frequently used to be straight barrel type, and magnesium desulfurization powder and delivery of carrier gas enter in the molten iron by straight bobbin; Also just like the Chinese patent 99108043.2 disclosed spray guns that have vaporizer, this spray gun can improve the utilization ratio of magnesium desulfurization when using Sweet natural gas as carrier gas, but lance body structure is big, makes complicated.Above-mentioned two kinds of spray guns are in treating processes, high temperature liquid iron raises the spray gun temperature out by the thermal conduction meeting gradually, through handling several times, the anti-material on spray gun surface is owing to directly contact molten iron, heat in the anti-material can make spray gun inner tube body temperature degree further raise, can cause in the winding-up process that so thereby the softening tube wall that adheres to of magnesium desulfurization causes that spray gun stops up, stifled rifle has become main failure factor in the magnesium sulfur removal technology.
Have, Chinese patent 00225270.8 discloses a kind of metallic vapor desulphurization spray gun again, and the nozzle of this spray gun is made of refractory materials, disperse distribution capillary permeability cell in the material, and desulfurization metal enters desulfurizing iron by the capillary permeability cell form steam in inner chamber after.This device may improve the utilization ratio of sweetening agent.But there is following problem: the one, the making of capillary permeability cell is difficult to reach requirement, and work-ing life can be not high; The 2nd, metal forms the conduction that steam will rely on the molten iron heat in inner chamber, and speed is difficult to control, and the processing cycle is also very long.
Summary of the invention
The purpose of this utility model has designed a kind of molten iron desulfuring spray gun, can reduce stifled rifle accident, improves the activity ratio of desulfurizer.
For achieving the above object, molten iron desulfuring spray gun of the present utility model comprises housing, outer tube, interior pipe; Outer tube is arranged in the housing; Fill anti-material between itself and housing; Interior pipe is arranged in the outer tube; Gap in the gun head between pipe and outer tube diminishes gradually.
Described outer tube to gun head place internal diameter diminishes gradually.
Or described interior external diameter of pipe becomes big gradually.
Further, described outer tube is provided with sleeve pipe.
Described sleeve pipe to gun head place internal diameter diminishes.
Described lance head is detachable structure, is connected with outer tube or sleeve pipe.
Installing can be fixed the steel thorn of anti-material on the described inner walls.
Installing can be fixed the steel thorn of anti-material on described outer tube or the sleeve outer wall.
During use, sweetening agent is sprayed into by interior pipe, outer tube sprays into the higher gas of pressure, in the spray gun exit, outer tube diameter dwindles, and gas is accelerated herein, form one deck air film in the sweetening agent exit, alleviate the thermal conduction of the inside pipe of molten iron greatly, thereby reduced stifled rifle accident, improved the activity ratio of desulfurizer.In addition, gun head can be dismantled, and can be convenient for changing.
The beneficial effects of the utility model
Compared with prior art, spray gun of the present utility model is on the basis of original vertical barrel type spray gun, increase an outer tube, delivery of carrier gas and magnesium desulfurizer in the interior pipe, and only feed gas in the outer tube, in the spray gun exit, outer tube gas has formed good heat-blocking action, guarantee the normal conveying of magnesium desulfurizer, significantly reduced stifled rifle accident, improved the activity ratio of desulfurizer; In addition, rifle body head is detachable, can change maintenance easily, has saved the spray gun cost.
Description of drawings
Fig. 1 is a kind of structure formation synoptic diagram of the present utility model;
Fig. 2 is an another kind of structure formation synoptic diagram of the present utility model.
Fig. 3 is the local enlarged diagram of Fig. 2.
Embodiment
Referring to Fig. 1, molten iron desulfuring spray gun of the present utility model comprises housing 1, outer tube 2, interior pipe 3; Outer tube 2 is arranged in the housing 1, and installing can be fixed the steel thorn 4 of anti-material on outer tube 2 walls, and 1 of outer tube 2 and housing are filled anti-material; Interior pipe 3 is arranged in the outer tube 2; The gap that gun head 11 interior pipes 3 and outer tube are 2 diminishes gradually, and promptly described outer tube 2 to gun head place internal diameter diminishes gradually.
Referring to Fig. 2, Fig. 3, it is depicted as the another kind of structure formation of molten iron desulfuring spray gun of the present utility model, described outer tube 2 is provided with sleeve pipe 5, installing can be fixed the steel thorn 4 of anti-material on sleeve pipe 5 outer walls, sleeve pipe 5 to gun head 11 place's internal diameters diminish, lance head 11 is detachable structure, with sleeve pipe 5 by being threaded.
Sweetening agent and carrier gas enter by interior pipe 3 during winding-up, and protection gas enters by outer tube 2.Outside the outer tube 2 is sleeve pipe 5, and near outer tube 2 protection gas bore outlet dwindles.Because bore dwindles and makes gas be accelerated herein, and sweetening agent is also herein by interior pipe 3 ejections, the gas of outer tube 2 has formed uniform air film at interior pipe 3 and 2 of outer tubes, greatly reduces the thermal conduction of molten iron, thereby can significantly reduce the frequency of stifled rifle.
Claims (8)
1. a molten iron desulfuring spray gun is characterized in that, comprises
Housing,
Outer tube is arranged in the housing; Fill anti-material between itself and housing;
Interior pipe is arranged in the outer tube;
Gap in the gun head between pipe and outer tube diminishes gradually.
2. molten iron desulfuring spray gun as claimed in claim 1 is characterized in that, described outer tube to gun head place internal diameter diminishes gradually.
3. molten iron desulfuring spray gun as claimed in claim 1 is characterized in that, described interior external diameter of pipe becomes big gradually.
4. molten iron desulfuring spray gun as claimed in claim 1 is characterized in that described outer tube is provided with sleeve pipe.
5. molten iron desulfuring spray gun as claimed in claim 4 is characterized in that, described sleeve pipe to gun head place internal diameter diminishes.
6. as claim 1 or 4 described molten iron desulfuring spray guns, it is characterized in that described lance head is detachable structure, be connected with outer tube or sleeve pipe.
7. molten iron desulfuring spray gun as claimed in claim 1 is characterized in that, installing can be fixed the steel thorn of anti-material on the described inner walls.
8. as claim 1 or 4 described molten iron desulfuring spray guns, it is characterized in that installing can be fixed the steel thorn of anti-material on described outer tube or the sleeve outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022313 CN2701872Y (en) | 2004-04-27 | 2004-04-27 | Hot metal desulfurization lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420022313 CN2701872Y (en) | 2004-04-27 | 2004-04-27 | Hot metal desulfurization lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2701872Y true CN2701872Y (en) | 2005-05-25 |
Family
ID=34770311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420022313 Expired - Fee Related CN2701872Y (en) | 2004-04-27 | 2004-04-27 | Hot metal desulfurization lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2701872Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906512A (en) * | 2010-08-19 | 2010-12-08 | 中冶赛迪工程技术股份有限公司 | Spray gun for desulfuration of single-spray particle magnesium molten iron |
| CN101948942A (en) * | 2010-09-17 | 2011-01-19 | 马鞍山市鑫海耐火材料有限责任公司 | Novel desulfurization spray gun |
| CN102344994A (en) * | 2011-09-22 | 2012-02-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Desulfurization spray gun |
| CN102978341A (en) * | 2012-12-24 | 2013-03-20 | 营口戴斯玛克科技发展有限公司 | Desulfuration spray gun for molten iron refining |
| CN103060521A (en) * | 2012-12-24 | 2013-04-24 | 营口戴斯玛克科技发展有限公司 | Air cooling cyclonic magnesium agent desulphurization spray gun |
| CN103797137A (en) * | 2011-09-02 | 2014-05-14 | 奥图泰有限公司 | Lances for top submerged injection |
| CN104004875A (en) * | 2014-05-16 | 2014-08-27 | 营口欣立耐材科技有限公司 | Efficient molten iron desulfurization spray gun |
| CN111041146A (en) * | 2019-12-03 | 2020-04-21 | 莱芜钢铁集团新兴液气有限公司 | Refractory material piece and molten iron pretreatment desulfurization spray gun with same |
-
2004
- 2004-04-27 CN CN 200420022313 patent/CN2701872Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906512A (en) * | 2010-08-19 | 2010-12-08 | 中冶赛迪工程技术股份有限公司 | Spray gun for desulfuration of single-spray particle magnesium molten iron |
| CN101906512B (en) * | 2010-08-19 | 2012-07-25 | 中冶赛迪工程技术股份有限公司 | Spray gun for desulfuration of single-spray particle magnesium molten iron |
| CN101948942A (en) * | 2010-09-17 | 2011-01-19 | 马鞍山市鑫海耐火材料有限责任公司 | Novel desulfurization spray gun |
| CN101948942B (en) * | 2010-09-17 | 2012-10-03 | 马鞍山市鑫海耐火材料有限责任公司 | Novel desulfurization spray gun |
| CN103797137A (en) * | 2011-09-02 | 2014-05-14 | 奥图泰有限公司 | Lances for top submerged injection |
| CN103797137B (en) * | 2011-09-02 | 2016-08-24 | 奥图泰有限公司 | Spray gun for top-submerged injection |
| CN102344994A (en) * | 2011-09-22 | 2012-02-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Desulfurization spray gun |
| CN102978341A (en) * | 2012-12-24 | 2013-03-20 | 营口戴斯玛克科技发展有限公司 | Desulfuration spray gun for molten iron refining |
| CN103060521A (en) * | 2012-12-24 | 2013-04-24 | 营口戴斯玛克科技发展有限公司 | Air cooling cyclonic magnesium agent desulphurization spray gun |
| CN104004875A (en) * | 2014-05-16 | 2014-08-27 | 营口欣立耐材科技有限公司 | Efficient molten iron desulfurization spray gun |
| CN111041146A (en) * | 2019-12-03 | 2020-04-21 | 莱芜钢铁集团新兴液气有限公司 | Refractory material piece and molten iron pretreatment desulfurization spray gun with same |
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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: 20050525 Termination date: 20130427 |