CN201545866U - Multi-nozzle spray gun for removing sulfur in molten iron - Google Patents
Multi-nozzle spray gun for removing sulfur in molten iron Download PDFInfo
- Publication number
- CN201545866U CN201545866U CN2009200168986U CN200920016898U CN201545866U CN 201545866 U CN201545866 U CN 201545866U CN 2009200168986 U CN2009200168986 U CN 2009200168986U CN 200920016898 U CN200920016898 U CN 200920016898U CN 201545866 U CN201545866 U CN 201545866U
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- China
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- molten iron
- spray gun
- desulfurization
- nozzle
- core
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- 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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- Treatment Of Steel In Its Molten State (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model relates to a multi-nozzle spray gun for removing sulfur in molten iron. A square core protective steel pipe and refractory castables are arranged outside a gun core; and at least two nozzles which oblique outwards and are arranged at regular intervals are arranged at the head part of the gun core. Since multiple nozzles are adopted, the desulfurization powder sprayed out can be more scattered, the stirring effect in the desulfurization process of molten iron can be improved, the molten iron and the desulfurization powder can be mixed sufficiently, the reaction time is shortened, the utilization rate of the desulfurization powder is improved, the splashing in the desulfurization process is reduced, and the desulfurization effect is greatly improved under the circumstance that the original desulfurization technology is not changed and no production cost is increased. The multi-nozzle spray gun with simple structure, safety and practicability can be manufactured by a user and can effectively avoid the blocking of nozzles.
Description
Technical field
The utility model belongs to the steel-making mechanical field, the multi-nozzle spray gun that particularly a kind of desulfurizing iron is used.
Background technology
Along with the continuous growth of market to Clean Steel and high added value steel grade demand, desulfurizing iron has become requisite process procedure in the steelmaking process, and along with the development of smelting technology, also more and more higher to the desulfurizing iron effect of requirement.In the desulfurizing iron process, mixed passive lime powder of bringing into by gas and magnesium powder are driven in the hot metal ladle via the rifle core nozzle of desulphurization spray gun molten iron are carried out desulfurization.At present, domestic employed desulphurization spray gun all adopts straight-through rifle core, the i.e. desulphurization spray gun of a nozzle.Because desulphurization spray gun in use, its head need be inserted in 1300 ℃ the molten iron, high temperature liquid iron will produce greatly desulphurization spray gun and impact, especially after gas flow changes, the pulvis speed of being sprayed also will change thereupon, very easily causes scum and molten iron to immerse the rifle core, and the rifle core is stopped up, cause molten iron turbulent flow to occur, and cause big molten iron splash phenomenon.Simultaneously, because the rifle core is a straight pipe, the desulfurization powder of ejection is more concentrated, molten iron and desulfurization powder are difficult to thorough mixing, and mixing effect is poor, have not only reduced the utilization ratio of sweetening agent, and directly have influence on the sweetening effectiveness of molten iron, even return sulphur after causing desulfurization, reduced molten steel quality.
Summary of the invention
The purpose of this utility model aims to provide a kind of simple in structure, and is cheap, do not change any technology, makes molten iron and sweetening agent thorough mixing, significantly improves sweetening effectiveness, and can avoid the rifle core to stop up, and prevents the multi-nozzle desulphurization spray gun of splash.
For this reason, the solution taked of the utility model is:
A kind of multi-nozzle molten iron desulfuring spray gun is provided with in rifle core outside and protects core square steel pipe and refractory castable, and the rifle core head is provided with the nozzle of the outward-dipping and equidistant setting of at least two difference.
Described nozzle is two, and two nozzles are to weld one section on two symmetric inclined-planes that process on rifle core top respectively to make with the isometrical weldless steel tube of rifle core.The length of all nozzles is 80～120mm.
Owing to adopt multi-nozzle, the desulfurization powder of ejection is disperseed more, can improve the mixing effect of desulfurizing iron process, make thorough mixing between molten iron and the sweetening agent, shorten the reaction times, improve the utilization ratio of sweetening agent, reduce the splash in the sweetening process, not changing original sulfur removal technology and not increasing under the situation of production cost, greatly improved sweetening effectiveness.The utility model is simple in structure, and is safe and practical, cheap, but self manufacture, and effectively reduced the spray nozzle clogging phenomenon.
Description of drawings
Accompanying drawing is a multi-nozzle molten iron desulfuring spray gun section of structure.
Among the figure: nozzle 1, refractory castable 2, protect core square steel pipe 3, rifle core 4.
Embodiment
By accompanying drawing as seen, the utility model desulphurization spray gun mainly by nozzle 1, refractory castable 2, protect core square steel 3 and rifle core 4 is formed.For volume is the hot metal ladle of 100t, and rifle core 4 adopts internal diameter ￠ 13mm, external diameter ￠ 20mm weldless steel tube to make.Impaired for avoiding desulphurization spray gun to insert behind the molten iron, be provided with 75 * 75 * 7mm in the outside of the anterior rifle core 4 of desulphurization spray gun and protect core square steel pipe 3, the skin that protects core square steel pipe 3 is surrounded by refractory castable 2.Angle between the utility model 1, two nozzle 1 of nozzle that two difference of rifle core 4 heads welding are outward-dipping is 60 °.Its making method is, earlier rifle core 4 tops are processed the inclined-plane of 30 ° of two symmetric each flares, then two long 100mm, internal diameter ￠ 13mm, external diameter ￠ 20mm weldless steel tube are welded to place, two inclined-planes respectively, and will reveal the place of stitching and fill weldering extremely, stamp refractory castable 2 again and get final product.
Claims (4)
1. multi-nozzle molten iron desulfuring spray gun is provided with in rifle core outside and protects core square steel pipe and refractory castable, it is characterized in that the rifle core head is provided with at least two nozzles.
2. multi-nozzle molten iron desulfuring spray gun according to claim 1 is characterized in that, described nozzle is outward-dipping and equidistant setting respectively.
3. multi-nozzle molten iron desulfuring spray gun according to claim 1 is characterized in that, described nozzle is two, and two nozzles are to weld one section on two symmetric inclined-planes that process on rifle core top respectively to make with the isometrical weldless steel tube of rifle core.
4. multi-nozzle molten iron desulfuring spray gun according to claim 1 is characterized in that, the length of nozzle is 80～120mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200168986U CN201545866U (en) | 2009-08-25 | 2009-08-25 | Multi-nozzle spray gun for removing sulfur in molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200168986U CN201545866U (en) | 2009-08-25 | 2009-08-25 | Multi-nozzle spray gun for removing sulfur in molten iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201545866U true CN201545866U (en) | 2010-08-11 |
Family
ID=42601035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200168986U Expired - Fee Related CN201545866U (en) | 2009-08-25 | 2009-08-25 | Multi-nozzle spray gun for removing sulfur in molten iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201545866U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513210A (en) * | 2011-12-16 | 2012-06-27 | 江苏科行环境工程技术有限公司 | Sulfur trioxide Spraying device |
| CN106139851A (en) * | 2015-03-30 | 2016-11-23 | 杨建华 | A kind of Denitration in Boiler Multi-nozzle 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 |
-
2009
- 2009-08-25 CN CN2009200168986U patent/CN201545866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513210A (en) * | 2011-12-16 | 2012-06-27 | 江苏科行环境工程技术有限公司 | Sulfur trioxide Spraying device |
| CN106139851A (en) * | 2015-03-30 | 2016-11-23 | 杨建华 | A kind of Denitration in Boiler Multi-nozzle 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20150825 |
|
| EXPY | Termination of patent right or utility model |