CN201351169Y - Hot metal pretreatment desulphurization lance - Google Patents
Hot metal pretreatment desulphurization lance Download PDFInfo
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- CN201351169Y CN201351169Y CNU2008202305964U CN200820230596U CN201351169Y CN 201351169 Y CN201351169 Y CN 201351169Y CN U2008202305964 U CNU2008202305964 U CN U2008202305964U CN 200820230596 U CN200820230596 U CN 200820230596U CN 201351169 Y CN201351169 Y CN 201351169Y
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- lance
- spray gun
- vaporizing chamber
- outlet
- molten iron
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The utility model relates to a hot metal pretreatment desulphurization lance. The technical scheme utilized includes that a lance body (1) is fixedly connected with a framework (3), a refractory material outer lining (2) is poured on the outer wall of the lance body (1), the framework (3) is embedded in the refractory material outer lining (2), a delivery pipe (4) is arranged in the lance body (1), the top end of a vaporizing chamber (5) is communicated with the tail end of the delivery pipe (4), the vaporizing chamber (5) is in a combined shape of a frustum and a cylinder or a cylinder shape, the tail end of the vaporizing chamber (5) is provided with a lance lower outlet, and lateral walls thereof are provided with 2-12 lance side outlets (6). The minimum included angle which is formed between the center line of each lance side outlet (6) and the isohypsic surface ranges from 0 degree to 60 degrees, and each lance side outlet (6) can be a circular hole, an elliptic hole, a flaring hole or a square hole. The hot metal pretreatment desulphurization lance has the advantages of reasonable structure, high desulfurizer utilization rate and high desulphurization efficiency. As air escapes from the hot metal uniformly with continuous bubbles, the lance is stable in injection process with small liquid level fluctuation and small spatter and has low small influence on production environments.
Description
Technical field
The utility model belongs to the hot metal pretreatment technical field.Be specifically related to a kind of desulfurizing spray gun for pretreating molten iron.
Technical background
At present, most of magnesia mixture desulphurization spray guns are for having tubaeform vaporizing chamber structure spray gun, though this spray gun is simple in structure, but because outlet is single plane, in case when vibration takes place or tilts in spray gun, gas will enter molten iron with the air pocket form along a side of exit face in the vaporizing chamber, can produce five aspect disadvantageous effects like this:
1, air pocket is overflowed and can be vibrated by the aggravation spray gun by a side in the winding-up process, and the aggravation bubble is overflowed inhomogeneous;
2, enter molten iron because gas is discontinuous with the air pocket form, bubble is big, and its floating interval of floating dock in molten iron is short.Because the floating-upward process of bubble in molten iron is the process of reaction of Salmon-Saxl in a bubble surface magnesium vapor diffusion dissolving and surperficial magnesium steam and the molten iron, the bubble floating time is short, will directly cause the MAGNESIUM METAL utilization ratio low;
3, studies show that (G.A.Irons.etc.The Kinetics of Molten Iron Desulfurization Using MagnesiumVapor.METALLURGICAL TRANSACTIONS:VOL 12B, DEC 1981): in the single magnesium-blowing agent sweetening process, magnesium steam is 1: 9 by dissolved magnesium desulfurization ratio in surperficial direct reaction desulfurization and the molten iron in the bubble, magnesium steam meltage is few, and the process desulfuration efficiency that will directly cause jetting is low;
4, bubble is discontinuous in the winding-up process overflows unevenly, reduce the stirring action of gas greatly, can cause in the hot metal ladle and to flow inhomogeneously that (Mg, S) is slow at local rate of mass transfer for reactant molten iron, the desulfurization rate that influence is whole is unfavorable for that also the temperature in the hot metal ladle is even;
5, a large amount of unemployed magnesium steam in molten iron surface combustion even blast, cause a large amount of splashes of molten iron with bubble effusion iron liquid, increase iron loss, produce volume of smoke simultaneously, cause production on-site environment to worsen, and also are unfavorable for other production operations.
Summary of the invention
The utility model is intended to overcome above-mentioned technological deficiency, and purpose provides a kind of rational in infrastructure, winding-up process stabilization, sorbent utilization height, desulfuration efficiency height, to the little desulfurizing spray gun for pretreating molten iron of production environment influence.
For achieving the above object, the technical solution adopted in the utility model is: gun body connects with skeletal fixation, and the outer wall of gun body is cast with the refractory materials outer lining, and skeleton is embedded in the refractory materials outer lining, transport pipe places in the gun body, and the top of vaporizing chamber communicates with the end of transport pipe; The combined shaped that is shaped as round platform and cylinder of vaporizing chamber or cylindric, the end of vaporizing chamber are the spray gun lower part outlet, and the sidewall of vaporizing chamber is provided with 2～12 spray gun sidepiece outlets.
Described spray gun sidepiece outlet or be circular port or for slotted eye or for flared hole or be square opening; Spray gun sidepiece outlet is uniformly distributed in the contour of top, vaporizing chamber lower surface or equal-height position not, and the medullary ray of spray gun sidepiece outlet and the minimum angle of contour plane are 0～60 °.
Because adopt technique scheme, the utility model has vaporizing chamber at the transport pipe end, outlet is divided into lower part outlet and sidepiece outlet, and gas can be overflowed by lower part outlet and sidepiece outlet simultaneously in the vaporizing chamber, and is rational in infrastructure; Gas is overflowed with continuous small bubbles form in the sidepiece outlet, reduced the pressure of lower part outlet, the lower gas escaped quantity is few, the effusion bubble volume is little, the bubble floating time is long, specific surface area is big, help the dissolving of magnesium steam in molten iron, help improving sorbent utilization and blowing desulfurization efficient.
Therefore, the utlity model has characteristics rational in infrastructure, that sorbent utilization is high and desulfuration efficiency is high; Gas is overflowed in molten iron evenly, and bubble is continuous, and is so spray gun is stable in the winding-up process, liquid fluctuating is little and spraying state is few, little to the production environment influence.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Fig. 2 is an another kind of structural representation of the present utility model;
Fig. 3 is another structural representation of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is not the restriction to the utility model protection domain:
A kind of desulfurizing spray gun for pretreating molten iron, as shown in Figure 1: gun body 1 is fixedly connected with skeleton 3, and the outer wall of gun body 1 is cast with refractory materials outer lining 2, and skeleton 3 is embedded in the refractory materials outer lining 2, transport pipe 4 places in the gun body 1, and the top of vaporizing chamber 5 communicates with the end of transport pipe 4; The combined shaped that is shaped as round platform and cylinder of vaporizing chamber 5, the end of vaporizing chamber 5 are the spray gun lower part outlet, and the sidewall of vaporizing chamber 5 is provided with 4～6 spray gun sidepiece outlets 6.
Described spray gun sidepiece outlet 6 is a circular port, and spray gun sidepiece outlet 6 is uniformly distributed in the equal-height position on top, vaporizing chamber 5 lower surface, and the medullary ray of spray gun sidepiece outlet 6 and the minimum angle of contour plane are 30 °～60 °.
A kind of desulfurizing spray gun for pretreating molten iron, as shown in Figure 2: being shaped as of vaporizing chamber 5 is cylindric, and the end of vaporizing chamber 5 is the spray gun lower part outlet, and the sidewall of vaporizing chamber 5 is provided with 6～12 spray gun sidepiece outlets 6.Spray gun sidepiece outlet 6 is a flared hole, and spray gun sidepiece outlet 6 is uniformly distributed in the not equal-height position on top, vaporizing chamber 5 lower surface, and the medullary ray of spray gun sidepiece outlet 6 and the minimum angle of contour plane are 30 °～60 °.
All the other are with embodiment 1.
A kind of desulfurizing spray gun for pretreating molten iron, as shown in Figure 3: the spray gun sidepiece exports 6 up, and the minimum angle of its medullary ray and contour plane also is 30 °～60 °.
All the other are with embodiment 2.
A kind of desulfurizing spray gun for pretreating molten iron, the sidewall of vaporizing chamber 5 are provided with 2～4 spray gun sidepiece outlets 6, and spray gun sidepiece outlet 6 is a slotted eye; Spray gun sidepiece outlet 6 is uniformly distributed in the equal-height position on top, vaporizing chamber 5 lower surface, and the medullary ray of spray gun sidepiece outlet 6 and the minimum angle of contour plane are 0～30 °.
All the other are with embodiment 1.
A kind of desulfurizing spray gun for pretreating molten iron, the sidewall of vaporizing chamber 5 are provided with 4～8 spray gun sidepiece outlets 6, and spray gun sidepiece outlet 6 is a square opening; Spray gun sidepiece outlet 6 is uniformly distributed in the not equal-height position on top, vaporizing chamber 5 lower surface, and the medullary ray of spray gun sidepiece outlet 6 and the minimum angle of contour plane are 0～30 °.
All the other are with embodiment 1.
This embodiment has vaporizing chamber 5 at transport pipe 4 ends, and outlet is divided into lower part outlet and sidepiece outlet, and gas can be overflowed by lower part outlet and sidepiece outlet 6 simultaneously in the vaporizing chamber 5, and is rational in infrastructure; Gas exports 6 with continuous small bubbles form effusion at sidepiece, reduced the pressure of lower part outlet, bottom gas evolution amount reduces, the effusion bubble volume is little, the bubble floating time is long, specific surface area is big, help the dissolving of magnesium steam in molten iron, help improving sorbent utilization and blowing desulfurization efficient.
Therefore, the utlity model has characteristics rational in infrastructure, that sorbent utilization is high and desulfuration efficiency is high; Gas is in molten iron Overflow evenly, bubble is continuous, so spray gun is stable in the winding-up process, liquid fluctuating is little and spraying state is few, to the production environment shadow Ring little.
Claims (3)
1, a kind of desulfurizing spray gun for pretreating molten iron, it is characterized in that gun body [1] and skeleton [3] are fixedly connected, the outer wall of gun body [1] is cast with refractory materials outer lining [2], skeleton [3] is embedded in the refractory materials outer lining [2], transport pipe [4] places in the gun body [1], and the top of vaporizing chamber [5] communicates with the end of transport pipe [4]; The combined shaped that is shaped as round platform and cylinder of vaporizing chamber [5] or cylindric, the end of vaporizing chamber [5] is the spray gun lower part outlet, the sidewall of vaporizing chamber [5] is provided with 2～12 spray gun sidepiece outlets [6].
2, desulfurizing spray gun for pretreating molten iron according to claim 1, it is characterized in that described spray gun sidepiece outlet [6] is uniformly distributed in the contour of vaporizing chamber [5] top, lower surface or equal-height position not, the medullary ray of spray gun sidepiece outlet [6] and the minimum angle of contour plane are 0～60 °.
3, desulfurizing spray gun for pretreating molten iron according to claim 1 and 2 is characterized in that described spray gun sidepiece outlet [6] or for circular port or for slotted eye or for flared hole or be square opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202305964U CN201351169Y (en) | 2008-12-25 | 2008-12-25 | Hot metal pretreatment desulphurization lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202305964U CN201351169Y (en) | 2008-12-25 | 2008-12-25 | Hot metal pretreatment desulphurization lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201351169Y true CN201351169Y (en) | 2009-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202305964U Expired - Fee Related CN201351169Y (en) | 2008-12-25 | 2008-12-25 | Hot metal pretreatment desulphurization lance |
Country Status (1)
| Country | Link |
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| CN (1) | CN201351169Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642984A (en) * | 2013-12-24 | 2014-03-19 | 辽宁新邦科技有限公司 | Cyclonic side-escaping type desulphurization spraying gun |
| CN103667596A (en) * | 2013-12-24 | 2014-03-26 | 辽宁新邦科技有限公司 | High-thermal-shock-resistant desulfurization device |
-
2008
- 2008-12-25 CN CNU2008202305964U patent/CN201351169Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642984A (en) * | 2013-12-24 | 2014-03-19 | 辽宁新邦科技有限公司 | Cyclonic side-escaping type desulphurization spraying gun |
| CN103667596A (en) * | 2013-12-24 | 2014-03-26 | 辽宁新邦科技有限公司 | High-thermal-shock-resistant desulfurization device |
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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: 20091125 Termination date: 20101225 |