CN201006882Y - Oxygen spray pistol of revolving furnace structure - Google Patents
Oxygen spray pistol of revolving furnace structure Download PDFInfo
- Publication number
- CN201006882Y CN201006882Y CNU2007200670668U CN200720067066U CN201006882Y CN 201006882 Y CN201006882 Y CN 201006882Y CN U2007200670668 U CNU2007200670668 U CN U2007200670668U CN 200720067066 U CN200720067066 U CN 200720067066U CN 201006882 Y CN201006882 Y CN 201006882Y
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- spray orifice
- outlet
- oxygen lance
- little
- oxygen
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Abstract
The utility model discloses a revolving furnace oxygen lance blow head structure. A blow head body is provided with a main oxygen channel, a water containing plate, an end face, big blow holes and small blow holes communicated with the main oxygen channel, wherein the water containing plate and the end face form into an cooling water inlet channel and an outlet channel for the blow head, the big blow holes and the small blow holes are interlacedly arranged and the central line of the holes forms into an angle with the central line of the blow head. The utility model is characterized in that the outlets of the big blow holes and the outlets of the small blow holes are arranged on concentric circles of different radiuses. Compared with prior revolving furnace oxygen lance blow head structures, the revolving furnace oxygen lance blow head structure has the advantages that the oxygen supply strength of a revolving furnace is increased, the dephosphorization and desulfuration ability of the revolving furnace is improved, blowing time is shortened and flashing is decreased.
Description
Technical field
The utility model relates to the affiliated facility that is used for metallurgical converter of smelting, and more specifically refers to a kind of Oxygen Lance Nozzle for Converter structure.
Background technology
In oxygen top blown converter steel making, the oxygen supply situation of Oxygen Lance Nozzle for Converter structure plays crucial effects to metallurgical effect.The Oxygen Lance Nozzle for Converter structure that converter current steel-making is adopted according to differences such as converter tonnages, generally adopt 3～6 hole convergent-divergent channel supersonic flow designs, and each orifice center line all is to become certain included angle with the shower nozzle medullary ray.The shower nozzle principal mode comprises head body 10 as shown in Figure 1 and Figure 2, has several spray orifices 20 on it; Spray orifice 20 is evenly arranged (also have and be provided with a spray orifice on the shower nozzle medullary ray) on head body 10 same circumference, spray orifice 20 becomes identical angle α with shower nozzle 10 body axis.The oxygen lance blow head that uses as existing 300 tons of converters has 5 spray orifices, and a spray orifice is wherein arranged on the medullary ray, and all the other 4 spray orifices are evenly distributed on the same circumference, and spray orifice and head body axis become 12 ° of identical angles.The oxygen flow of this Oxygen Lance Nozzle for Converter has only 60000Nm
3/ h, duration of blast are long partially.
In addition, publication number is that the Chinese utility model specification sheets of CN2366420 discloses a kind of " mammoth conveter oxygen lance blow head structure ".As shown in Figure 3 and Figure 4, this mammoth conveter oxygen lance blow head structure has total oxygen path 1, big spray orifice 4, little spray orifice 5, pocket water plate 6 and end face 7, pocket water plate 6 and end face 7 constitute the water coolant inlet channel 2 and water outlet 3 of shower nozzles, big spray orifice 4 is crisscross arranged, exports on the same circumference that is distributed in end face 7 with little spray orifice 5, big spray orifice 4 medullary rays become β 1=14～16 ° angle with the shower nozzle medullary ray, outlet Mach 2 ship 1.8～2.0, little spray orifice 5 medullary rays become β 2=10～12 ° angle with the shower nozzle medullary ray, outlet Mach 2 ship 2.0～2.2.This spray nozzle reasonable in design can be quickened decarburizing reaction, improvementization slag condition, shortens the heat, smelting process steadily do not have splash.Though this mammoth conveter oxygen lance blow head structure has big or small spray orifice staggered arrangement, its outlet is distributed on the same circumference; Simultaneously, big spray orifice 4 medullary rays of this shower nozzle become 14～16 ° with the shower nozzle medullary ray, and little spray orifice 5 medullary rays become 10～12 ° with the shower nozzle medullary ray, so oxygen flow only is 40000～65000Nm
3/ h, duration of blast is still long partially.
The utility model content
The purpose of this utility model aims to provide and a kind ofly quickens decarburizing reaction, improve converter slag condition, shorten the time of bessemerizing, reduce the Oxygen Lance Nozzle for Converter structure of splash.
To achieve these goals, Oxygen Lance Nozzle for Converter structure of the present utility model has total oxygen path on the head body, pocket water plate, end face, the big spray orifice that is communicated with total oxygen path, little spray orifice; Pocket water plate and end face constitute the water coolant inlet channel and the water outlet of shower nozzle, big spray orifice with little spray orifice is crisscross arranged and the two medullary ray all with shower nozzle medullary ray formation angle, it is characterized in that: the outlet of described big spray orifice and the outlet of little spray orifice lay respectively on the concentric circumferences of different radii.
The residing radius of a circle of the outlet of described big spray orifice is less than the residing radius of a circle of the outlet of little spray orifice.
The angle of described big orifice center line and shower nozzle medullary ray is 9～12 °; The angle of little orifice center line and shower nozzle medullary ray is 12～15 °.
Described big spray orifice throat diameter is 50～54mm, and exit diameter is 68～73mm; Little spray orifice throat diameter is 42～46mm, and exit diameter is 56～61mm.
The outlet Mach 2 ship 2.0～2.2 of described big spray orifice; The outlet Mach 2 ship 1.9～2.1 of little spray orifice.
Described big spray orifice and little spray orifice respectively have three.
Because the outlet of two groups of spray orifices is arranged on the different circumference of shower nozzle end face, big or small orifice center line is different with shower nozzle medullary ray angle, and the Oxygen Flow thigh is staggered, and has reduced the overlapping interference between the Oxygen Flow thigh, and then reduces the splash generation.The outlet of big spray orifice is distributed in the inner ring of shower nozzle end face, and the angle of orifice center line and shower nozzle medullary ray is little, and the outlet Mach number is big, is convenient to improve the penetration depth of Oxygen Flow thigh, helps converter stirring and decarburization.The outlet of little spray orifice is distributed in the outer ring of shower nozzle end face, and the angle of orifice center line and shower nozzle medullary ray is big, and the oxygen jet is in the outer ring of molten steel face, disperses and has enlarged fiery some reaction zone, helps the converter slag.
Therefore, Oxygen Lance Nozzle for Converter structure of the present utility model has oxygen supply intensity, the ability that improves converter dephosphorization and desulfurization that improves converter, the advantage that shortens duration of blast, minimizing splash.
Description of drawings
Fig. 1 is the top cross-sectional view of existing Oxygen Lance Nozzle for Converter structure;
Fig. 2 is the A-A diagrammatic cross-section of Fig. 1;
Fig. 3 is the diagrammatic cross-section of the existing mammoth conveter oxygen lance blow head structure that retrieves;
Fig. 4 is the G-G top cross-sectional view of Fig. 3;
Fig. 5 is a vertical view of the present utility model;
Fig. 6 is the B-B diagrammatic cross-section of Fig. 5;
Fig. 7 is the comparison diagram of the utility model and former Oxygen Lance Nozzle for Converter structure duration of blast, and wherein T is a duration of blast, and A is former Oxygen Lance Nozzle for Converter structure, and B is an Oxygen Lance Nozzle for Converter structure of the present utility model.
Among the figure; 1, total oxygen path 2, inlet channel 3, water outlet 4, big spray orifice 5, little spray orifice 6, pocket water plate 7, end face 10, head body 20, spray orifice
Embodiment
As shown in Figure 5 and Figure 6, Oxygen Lance Nozzle for Converter structure of the present utility model has the big spray orifice of total oxygen path 1, three 4, three little spray orifices 5, pocket water plate 6 and end faces 7 on the head body.Wherein, total oxygen path 1 all is communicated with each big spray orifice 4, each following spray orifice 5, and pocket water plate 6 and end face 7 constitute the water coolant inlet channel 2 and water outlet 3 of shower nozzles, and inlet channel 2 and water outlet 3 are one on the other around three big spray orifices 4 and three little spray orifices 5.Big spray orifice 4 is crisscross arranged with little spray orifice 5 and the outlet of three big spray orifices 4 is positioned on the circumference, and the outlet of three little spray orifices 5 is positioned on another circumference, and two circumference are concentric; The radius R 1 of the outlet circumference of living in of wherein big spray orifice 4 is less than the radius R 2 of little spray orifice 5 circumference of living in.
Large and small spray orifice 4,5 is the Lavalle pass, and wherein big spray orifice 4 throat diameters are 50～54mm, and exit diameter is 68～73mm, and big spray orifice 4 medullary rays become the angle of α=9～12 ° with the shower nozzle medullary ray, export Mach 2 ship 2.0～2.2; Little spray orifice 5 throat diameters are 42～46mm, and exit diameter is 56～61mm, and little spray orifice 5 medullary rays become β=12～15 ° angle with the shower nozzle medullary ray, outlet Mach 2 ship 1.9～2.1.
Because the outlet of large and small spray orifice 4,5 is arranged on the different circumference of shower nozzle end face, large and small spray orifice 4,5 medullary rays are different with shower nozzle medullary ray angle, and the Oxygen Flow thigh is staggered, and reduced the overlapping interference between the Oxygen Flow thigh, and then reduce the splash generation.The outlet of big spray orifice 4 is distributed in the inner ring of shower nozzle end face, and the angle of orifice center line and shower nozzle medullary ray is little, and the outlet Mach number is big, is convenient to improve the penetration depth of Oxygen Flow thigh, helps converter stirring and decarburization.The outlet of little spray orifice 5 is distributed in the outer ring of shower nozzle end face, and the angle of orifice center line and shower nozzle medullary ray is big, and the oxygen jet is in the outer ring of molten steel face, disperses and has enlarged fiery some reaction zone, helps the converter slag.
Use by the scene, the oxygen flow of Oxygen Lance Nozzle for Converter structure of the present utility model reaches 60000～70000Nm3/h, is example with 300 tons converters, and duration of blast has shortened 2 minutes than the duration of blast of former Oxygen Lance Nozzle for Converter structure, as shown in Figure 7.Concrete effect such as embodiment 1 to embodiment 3.
Embodiment 1
Big spray orifice 4 throat diameters of this Oxygen Lance Nozzle for Converter structure are 50mm, and exit diameter is 68mm, and big spray orifice 4 medullary rays and shower nozzle medullary ray angle are 9.5 °, outlet Mach 2 ship 2.15; Little spray orifice 15 throat diameters are 46mm, and exit diameter is 61mm, and little spray orifice 5 medullary rays and shower nozzle medullary ray angle are 13 °, outlet Mach 2 ship 1.95.Use through the scene, total oxygen flow is 63000Nm3/h.
Embodiment 2:
Big spray orifice 4 throat diameters of this Oxygen Lance Nozzle for Converter structure are 53mm, and exit diameter is 72mm, and big spray orifice 4 medullary rays and shower nozzle medullary ray angle are 10 °, outlet Mach 2 ship 2.1; Little spray orifice 5 throat diameters are 43mm, and exit diameter is 57mm, and little spray orifice 5 medullary rays and shower nozzle medullary ray angle are 14 °, outlet Mach 2 ship 2.05.Use through the scene, total oxygen flow is 67000Nm3/h.
Embodiment 3:
Big spray orifice 4 throat diameters of this Oxygen Lance Nozzle for Converter structure are 54mm, and exit diameter is 73mm, and big spray orifice 4 medullary rays and shower nozzle medullary ray angle are 11 °, outlet Mach 2 ship 2.05; Little spray orifice 5 throat diameters are 42.5mm, and exit diameter is 56.5mm, and little spray orifice 5 medullary rays and shower nozzle medullary ray angle are 14.5 °, outlet Mach 2 ship 2.0.Use through the scene, total oxygen flow is 70000Nm3/h.
Therefore, the existing relatively Oxygen Lance Nozzle for Converter structure of Oxygen Lance Nozzle for Converter structure of the present utility model has oxygen supply intensity, the ability that improves converter dephosphorization and desulfurization that improves converter, the advantage that shortens duration of blast, minimizing splash.
But, those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. an Oxygen Lance Nozzle for Converter structure has total oxygen path on the head body, pocket water plate, end face, the big spray orifice that is communicated with total oxygen path, little spray orifice; Pocket water plate and end face constitute the water coolant inlet channel and the water outlet of shower nozzle, big spray orifice with little spray orifice is crisscross arranged and the two medullary ray all with shower nozzle medullary ray formation angle, it is characterized in that: the outlet of described big spray orifice and the outlet of little spray orifice lay respectively on the concentric circumferences of different radii.
2. Oxygen Lance Nozzle for Converter structure according to claim 1 is characterized in that: the radius of the outlet circumference of living in of described big spray orifice is less than the radius of the outlet circumference of living in of little spray orifice.
3. Oxygen Lance Nozzle for Converter structure according to claim 2 is characterized in that: the angle of described big orifice center line and shower nozzle medullary ray is 9～12 °; The angle of little orifice center line and shower nozzle medullary ray is 12～15 °.
4. Oxygen Lance Nozzle for Converter structure according to claim 3 is characterized in that: described big spray orifice throat diameter is 50～54mm, and exit diameter is 68～73mm; Little spray orifice throat diameter is 42～46mm, and exit diameter is 56～61mm.
5. Oxygen Lance Nozzle for Converter structure according to claim 4 is characterized in that: the outlet Mach 2 ship 2.0～2.2 of described big spray orifice; The outlet Mach 2 ship 1.9～2.1 of little spray orifice.
6. Oxygen Lance Nozzle for Converter structure according to claim 1 is characterized in that: described big spray orifice and little spray orifice respectively have three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200670668U CN201006882Y (en) | 2007-02-06 | 2007-02-06 | Oxygen spray pistol of revolving furnace structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200670668U CN201006882Y (en) | 2007-02-06 | 2007-02-06 | Oxygen spray pistol of revolving furnace structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201006882Y true CN201006882Y (en) | 2008-01-16 |
Family
ID=39002826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200670668U Expired - Fee Related CN201006882Y (en) | 2007-02-06 | 2007-02-06 | Oxygen spray pistol of revolving furnace structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531683A (en) * | 2018-07-10 | 2018-09-14 | 山东钢铁股份有限公司 | A kind of different angle oxygen rifle head in six hole of coverter pig |
| CN108642234A (en) * | 2018-07-16 | 2018-10-12 | 辽宁科技大学 | A kind of single channel double structure oxygen lance nozzle and converting process |
| CN108754065A (en) * | 2018-08-01 | 2018-11-06 | 山东钢铁股份有限公司 | A kind of selection system and method for oxygen lance nozzle parameter |
| CN111187873A (en) * | 2020-02-17 | 2020-05-22 | 本钢板材股份有限公司 | Molten steel smelting method of large converter |
-
2007
- 2007-02-06 CN CNU2007200670668U patent/CN201006882Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531683A (en) * | 2018-07-10 | 2018-09-14 | 山东钢铁股份有限公司 | A kind of different angle oxygen rifle head in six hole of coverter pig |
| CN108642234A (en) * | 2018-07-16 | 2018-10-12 | 辽宁科技大学 | A kind of single channel double structure oxygen lance nozzle and converting process |
| CN108754065A (en) * | 2018-08-01 | 2018-11-06 | 山东钢铁股份有限公司 | A kind of selection system and method for oxygen lance nozzle parameter |
| CN111187873A (en) * | 2020-02-17 | 2020-05-22 | 本钢板材股份有限公司 | Molten steel smelting method of large converter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: CO-PATENTEE TO: IRON AND STEEL RESEARCH GEUERAL INST. ¬ |
|
| CU01 | Correction of utility model patent |
Correction item: Co-patentee Correct: General Research Institute of Iron & Steel Number: 03 Page: The title page Volume: 24 |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Co-patentee Correct: General Research Institute of Iron & Steel Number: 03 Volume: 24 |
|
| ERR | Gazette correction |
Free format text: CORRECT: CO-PATENTEE; FROM: NONE ¬ TO: IRON AND STEEL RESEARCH GEUERAL INST. ¬ |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080116 Termination date: 20160206 |