CN1644712A - Double channel cluster fluidic oxygen gun process and nozzle for converter steelmaking - Google Patents
Double channel cluster fluidic oxygen gun process and nozzle for converter steelmaking Download PDFInfo
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- CN1644712A CN1644712A CNA2005100112012A CN200510011201A CN1644712A CN 1644712 A CN1644712 A CN 1644712A CN A2005100112012 A CNA2005100112012 A CN A2005100112012A CN 200510011201 A CN200510011201 A CN 200510011201A CN 1644712 A CN1644712 A CN 1644712A
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- converter steelmaking
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Abstract
A smelting process and sprayer of pneumatic steel making two-flow beaming efflux oxygen shooter. The process divided the oxygen into the centre oxygen efflux and the ring oxygen efflux which is 1.6-2.5 Hz, the speed of ring oxygen efflux is 50-300 m/s, and the flow of it is the 1/10 of the centre efflux which is 50-10000 Nm3/h and 1000-80000 Nm3/h, respectively. The pressure of the oxygen keeps 0.7MPa-1.5 MPa. The high temperature air can release the decaying speed of the oxygen efflux, and improve the penetrating depth, the stirring strength. Also, it can lengthen the life of the sprayer.
Description
Technical field
The invention belongs to the ferrous metallurgy field, particularly a kind of converter steelmaking oxygen rifle blowing technology.
Background technology
At present, the converter steelmaking oxygen blast mainly adopts the supersonic speed water cooled oxygen lance to carry out oxygen decarburization steel-making, promptly from the furnace roof of converter liftable oxygen rifle is installed, and is blown in the molten bath.Because the influence that the oxygen jet of traditional supersonic speed oxygen rifle is entrainmented by gas stream in the stove, the oxygen jet decay is accelerated, reduced penetration depth and the stirring intensity of oxygen jet to the molten bath, simultaneously for remedying the negative effect that the oxygen jet decay brings soon, the blowing position of oxygen rifle need reduce, the working conditions of oxygen rifle is more abominable like this, and the oxygen lance blow head life-span descends.
Summary of the invention
The objective of the invention is to introduce converter steelmaking double channel cluster fluidic oxygen gun smelting technology and equipment, the high temperature rarefied gas parcel center oxygen that the CO burning that produces by reaction between carbon and oxygen in outer oxygen jet and the stove produces, reach and slow down oxygen jet, improve the service efficiency of oxygen, the smelting position of oxygen rifle in stove improved, improve the decarbonization rate and the smelting speed of oxygen jet, prolong the life-span of oxygen nozzle.
A kind of converter steelmaking double channel cluster fluidic oxygen gun smelting technology, it is characterized in that this technology is divided into central oxygen jet and outer annular oxygen jet by the tapping sleeve of oxygen lance blow head with oxygen, wherein the center primary oxygen jets is supersonic jet, and the effusive Mach number is designed to 1.6-2.5; Outer annular oxygen jet, jet speed are 50-300m/s.
The oxygen flow that the present invention sets the center power stream is outer annular effusive 1-10 times.The flow range of center primary oxygen jets is 1000-80000Nm
3/ h.The outer annular jet flow is 50-10000Nm
3/ h.The pipeline oxygen pressure remains on 0.7Mpa-1.5Mpa, and oxygen flow and pressure can be adjusted according to smelting process.
A kind of converter steelmaking cluster fluidic dual channel oxygen lance shower nozzle, constitute by water-in 1, water outlet 2, epoxy inlet 3, main oxygen inlet 5, it is characterized in that oxygen lance blow head has increased oxygen thrust-augmenting nozzle 4, oxygen through thrust-augmenting nozzle 4 shuntings, is divided into power stream oxygen and epoxy from the oxygen house steward.
The jet hole count of oxygen nozzle is 1-8, and the outer tube diameter of oxygen rifle is 20-1100mm.Central oxygen pipe diameter is 10-1000mm, and the diameter of epoxy pipeline is generally 1.01-1.50 times of center main oxygen pipe diameter.Inserting the endless tube outlet is 0-200mm apart from the distance that shower nozzle exports.
The present invention can enlarge the surface-area of oxygen jet to the molten bath stirring reaction by the design of epoxy, improves the change slag speed of smelting, and quickens the carrying out of dephosphorisation reaction.
Adopt converter steelmaking double channel cluster fluidic oxygen gun smelting technology and equipment, can alleviate the rate of decay of oxygen jet, improve penetration depth and the stirring intensity of oxygen jet to the molten bath, simultaneously owing to the jet speed decay delays, can improve the blowing rifle position of oxygen rifle, and do not influence the impact depth of jet to molten steel, prolonged the work-ing life of oxygen nozzle like this.
Description of drawings
Fig. 1 is the sectional view of cluster fluidic dual channel oxygen lance shower nozzle.
1, water-in 2, water outlet 3, epoxy inlet 4, oxygen guiding device 5, main oxygen inlet
Fig. 2 is the upward view of cluster fluidic dual channel oxygen lance shower nozzle.
1.80 the processing parameter of ton converter steelmaking double channel cluster fluidic oxygen gun is:
The design variable of oxygen rifle is: the flow of center primary oxygen jets is 17000Nm
3/ h.The outer annular jet flow is 1000Nm
3/ h.The pipeline oxygen pressure remains on 1.2Mpa.The external diameter of oxygen channel is 219mm, and the shower nozzle hole count is 4, and center main oxygen nozzle diameter is 45mm, Mach 2 ship 2.1.Angle between spray orifices θ is 13 °, and the epoxy diameter is 60mm, oxygen rifle Inlet and outlet water flow 140t/h.
2.150 the processing parameter of ton converter steelmaking double channel cluster fluidic oxygen gun is: oxygen jet adopts supersonic jet, Mach 2 ship 2.2, and the nozzle of oxygen lance number is Lavalle, 5 hole, oxygen flow is 34000Nm
3/ h, oxygen pressure 1.2Mpa.Oxygen rifle Inlet and outlet water flow 200t/h.Oxygen rifle external diameter φ 300, oxygen rifle internal diameter φ 210.Oxygen center main aperture exit diameter 55mm, angle between spray orifices θ is 14 °.Annular oxygen outlet diameter 75mm.
Blowing technology is:
Fs: change the slag stage.0-5 minute, the oxygen rifle was started working, and center master's oxygen adopts the 70% flow winding-up of design oxygen-supplying amount, and annular oxygen adopts 100% winding-up of design oxygen amount.To smelt the first slag fusing fast, slag making speed shortens 1-2min than conventional oxygen rifle, and dephosphorization speed improves 10%, the purpose that reaches quick dephosphorization and smelt low P steel.
Subordinate phase: decarburization stage.5-10min, according to the situation of in-furnace slag, center master's oxygen adopts the 100% flow size winding-up of design oxygen-supplying amount, and annular oxygen adopts 50% winding-up of design oxygen amount.Decarburization intensification decarbonization rate reaches more than the 0.3%/min fast.
Phase III: slag and temperature adjusting stage.According to the situation of in-furnace slag, center master's oxygen adopts the 80% flow size winding-up of design oxygen-supplying amount, and annular oxygen adopts 50% winding-up of design oxygen amount.
Claims (4)
1. converter steelmaking double channel cluster fluidic oxygen gun smelting technology, it is characterized in that technology of the present invention is divided into central oxygen jet and outer annular oxygen jet by the tapping sleeve of oxygen lance blow head with oxygen, wherein the center primary oxygen jets is supersonic jet, and the effusive Mach number is designed to 1.6-2.5; Outer annular oxygen jet, jet speed are 50-300m/s.
2. converter steelmaking cluster fluidic dual channel oxygen lance smelting technology according to claim 1, the oxygen flow that it is characterized in that technique initialization of the present invention center power stream be outer annular effusive 1-10 doubly; The flow range of center primary oxygen jets is 1000-80000Nm
3/ h, outer annular jet flow are 50-10000Nm
3/ h; The pipeline oxygen pressure remains on 0.7Mpa-1.5Mpa.
3. a converter steelmaking cluster fluidic dual channel oxygen lance shower nozzle is made of water-in (1), water outlet (2), epoxy inlet (3), main oxygen inlet (5), it is characterized in that oxygen lance blow head has increased oxygen thrust-augmenting nozzle (4); Oxygen through thrust-augmenting nozzle (4) shunting, is divided into power stream oxygen and epoxy from the oxygen house steward.
4. as converter steelmaking cluster fluidic dual channel oxygen lance shower nozzle as described in the claim 3, the jet hole count that it is characterized in that oxygen nozzle is 1-8, the outer tube diameter of oxygen rifle is 20-1100mm, central oxygen pipe diameter is 10-1000mm, and the diameter of epoxy pipeline is 1.01-1.50 a times of center main oxygen pipe diameter; Inserting the endless tube outlet is 0-100mm apart from the distance that shower nozzle exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100112012A CN1644712A (en) | 2005-01-19 | 2005-01-19 | Double channel cluster fluidic oxygen gun process and nozzle for converter steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100112012A CN1644712A (en) | 2005-01-19 | 2005-01-19 | Double channel cluster fluidic oxygen gun process and nozzle for converter steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1644712A true CN1644712A (en) | 2005-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2005100112012A Pending CN1644712A (en) | 2005-01-19 | 2005-01-19 | Double channel cluster fluidic oxygen gun process and nozzle for converter steelmaking |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993127A (en) * | 2014-05-30 | 2014-08-20 | 河北唐银钢铁有限公司 | Oxygen lance nozzle with concentrated streams |
| CN106834600A (en) * | 2017-03-30 | 2017-06-13 | 山东崇盛冶金氧枪有限公司 | A kind of coherent oxygen lance |
| CN107401930A (en) * | 2017-07-25 | 2017-11-28 | 攀钢集团研究院有限公司 | Jet stirring system for electro-aluminothermic process vanadium titanium smelting furnace |
| CN109628754A (en) * | 2019-02-03 | 2019-04-16 | 包头华鼎铜业发展有限公司 | Copper making continuous-blowing furnace oxygen lance nozzle |
| CN109628686A (en) * | 2019-02-26 | 2019-04-16 | 中冶赛迪技术研究中心有限公司 | Cluster fluidic oxygen gun sprayer |
| CN109680118A (en) * | 2019-02-27 | 2019-04-26 | 中冶赛迪工程技术股份有限公司 | Coaxial double supersonic flows of oxygen coherent oxygen lances |
| CN110643781A (en) * | 2019-10-14 | 2020-01-03 | 北京科技大学 | CO for converter steelmaking2-O2Oxygen lance nozzle and converting method |
-
2005
- 2005-01-19 CN CNA2005100112012A patent/CN1644712A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993127A (en) * | 2014-05-30 | 2014-08-20 | 河北唐银钢铁有限公司 | Oxygen lance nozzle with concentrated streams |
| CN103993127B (en) * | 2014-05-30 | 2016-03-30 | 河北唐银钢铁有限公司 | A kind of oxygen lance blow head with concentrated a fluid stream |
| CN106834600A (en) * | 2017-03-30 | 2017-06-13 | 山东崇盛冶金氧枪有限公司 | A kind of coherent oxygen lance |
| CN106834600B (en) * | 2017-03-30 | 2024-03-26 | 山东崇盛冶金氧枪有限公司 | Bundling oxygen gun |
| CN107401930B (en) * | 2017-07-25 | 2019-04-26 | 攀钢集团研究院有限公司 | Jet stirring system for electro-aluminothermic process vanadium titanium smelting furnace |
| CN107401930A (en) * | 2017-07-25 | 2017-11-28 | 攀钢集团研究院有限公司 | Jet stirring system for electro-aluminothermic process vanadium titanium smelting furnace |
| CN109628754A (en) * | 2019-02-03 | 2019-04-16 | 包头华鼎铜业发展有限公司 | Copper making continuous-blowing furnace oxygen lance nozzle |
| CN109628686A (en) * | 2019-02-26 | 2019-04-16 | 中冶赛迪技术研究中心有限公司 | Cluster fluidic oxygen gun sprayer |
| CN109680118A (en) * | 2019-02-27 | 2019-04-26 | 中冶赛迪工程技术股份有限公司 | Coaxial double supersonic flows of oxygen coherent oxygen lances |
| WO2020173088A1 (en) * | 2019-02-27 | 2020-09-03 | 中冶赛迪工程技术股份有限公司 | Coaxial dual supersonic speed oxygen flow coherent oxygen lance |
| CN109680118B (en) * | 2019-02-27 | 2024-02-06 | 中冶赛迪工程技术股份有限公司 | Coaxial double supersonic oxygen flow bundling oxygen gun |
| CN110643781A (en) * | 2019-10-14 | 2020-01-03 | 北京科技大学 | CO for converter steelmaking2-O2Oxygen lance nozzle and converting method |
| CN110643781B (en) * | 2019-10-14 | 2020-07-10 | 北京科技大学 | CO for converter steelmaking2-O2Oxygen lance nozzle and converting method |
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