CN1485449A - Top-blowing oxygen apparatus for electric-arc steel furnace - Google Patents
Top-blowing oxygen apparatus for electric-arc steel furnace Download PDFInfo
- Publication number
- CN1485449A CN1485449A CNA03131791XA CN03131791A CN1485449A CN 1485449 A CN1485449 A CN 1485449A CN A03131791X A CNA03131791X A CN A03131791XA CN 03131791 A CN03131791 A CN 03131791A CN 1485449 A CN1485449 A CN 1485449A
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- Prior art keywords
- oxygen
- electric
- electric furnace
- electrode
- furnace
- Prior art date
- 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.)
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 61
- 239000001301 oxygen Substances 0.000 title claims abstract description 61
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 30
- 239000010959 steel Substances 0.000 title claims abstract description 30
- 238000007664 blowing Methods 0.000 title claims abstract description 8
- 238000010891 electric arc Methods 0.000 title description 8
- 239000007921 spray Substances 0.000 claims description 9
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009845 electric arc furnace steelmaking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
A top blowing oxygen device for inputting oxygen into arc furnaces. It is characterized in, an electrode hoisting device linking with cross bars of electrodes, electrode oilcylinder and clamping springs, clamping members are on the cross bars of electrodes, oxygen guns are in the clamping members and are inserted into arc furnaces, oxygen pipes are over oxygen guns having nozzle at the bottom thereof. Since oxygen guns are installed over arc furnaces, oxygen could be directly blown into molten steel, which improves the utilization rate of oxygen, speeding up the reaction in molten steel.
Description
Technical field:
The present invention relates to a kind of top blowing oxygen device of electric furnace arrangement for producing steel, in electric furnace, import oxygen when being used in the electric furnace high hot metal ratio, belong to the smelting technical field of tools of electric arc furnace.
Background technology:
Before the present invention made, in existing EAF steelmaking technology, the steel scrap of packing in the electric arc furnace stove inserted electrode in from the electric arc furnace top toward stove, utilizes the heat that discharge generation electric arc sends between electrode and furnace charge to make steel.Modernization electric furnace steel mill adopts electric arc furnace to combine with external refining, has simplified technical process, and electric arc furnace is only as the usefulness of melting batch.Electric-arc furnace steelmaking adopts oxidation style mostly, comes impurity in the oxidation furnace charge with ore or oxygen in the smelting process, removes most of gas in the molten steel by the oxidizing boil process simultaneously, and this is the basic skills of electric arc furnace smelting.Mainly in the fusing of furnace charge and the oxidising process rely on power supply rationally, oxygen blast in good time and slag making as early as possible, quicken to melt and guarantee that molten steel composition and temperature reach the requirement of tapping.Oxygen blast is to utilize the heat of oxidizing reaction to quicken melting batch, gives full play to the effect that oxygen blast is fluxed, and after furnace charge melts substantially, continues the phosphorus in the oxygen blast oxidation removal molten steel, removes the carbon in the molten steel simultaneously.Decarburization and dephosphorization all need oxygen, and contradictory on the demand to oxygen, only when the forced oxidation molten steel, just can satisfy both sides' demand.In recent years, China Steel industry develop rapidly wherein rised appreciably for the Electric furnace steel making throughput of main raw material has had, and caused the shortage of steel scrap source, and price obviously goes up.In order to reduce production costs, to enhance one's market competitiveness, electric furnace adopts the iron and steel stock-molten iron of the comparatively cheap replacement steel scrap of price in a large number.Because oxygen blast is a kind of supplementary means of electrosmelting, oxygen generally is blown into from fire door and furnace wall, therefore no matter on oxygen blown intensity, still on oxygen blown angle, all can not satisfy the requirement of high hot metal ratio, and power consumption height in process of production, cause production cost to increase.
Summary of the invention:
The objective of the invention is to overcome above-mentioned weak point, thereby a kind of compact construction is provided, rationally; Low cost of manufacture can cut down the consumption of energy; Oxygen blast intensity increases, and is blown into oxygen from furnace roof, can accelerate the chemical reaction of molten iron in the electric furnace, makes the composition and the temperature of molten steel in the electric furnace reach set quota very soon, satisfies the top blowing oxygen device of the electric furnace arrangement for producing steel of high hot metal ratio requirement.
Main solution of the present invention is achieved in that
It is mainly by electric-pole horizontal arm 5 connection electrode lifting devices 15, installing electrodes oil cylinder 4 and fastening spring 6 on electric-pole horizontal arm 5, gripping unit 7 is installed on the electric-pole horizontal arm 5, it is characterized in that adopting oxygen rifle 8 to be installed in the gripping unit 7, and in electric furnace 13 tops insertion electric furnace, in oxygen rifle 8 upper ends oxygen hose 9 is housed, its lower end is shaped on spray orifice 14.
Compared with the prior art the present invention has the following advantages:
1. the present invention is simple, compact and reasonable for structure; Low cost of manufacture can cut down the consumption of energy;
2. because the oxygen rifle is installed in the electric furnace top, and oxygen directly is blown into the molten steel from upper vertical, after angle strengthened, oxygen utilization rate improved greatly;
3. Lavalle, 5-15 hole spray orifice is adopted in oxygen rifle lower end, and the intensity of having disperseed single hole oxygen provided very high oxygen supply intensity so in the past in the molten steel, improved production efficiency;
4. because the oxygen that sprays from the spray orifice of Lavalle is ultrasonic, and the supersonic speed oxygen flow is very dark to the penetration depth of molten steel, so oxygen utilization rate improves greatly;
5. can accelerate the chemical reaction of molten iron in the electric furnace, the composition and the temperature of molten steel in the electric furnace are reached the set quota very soon, satisfy the requirement of high hot metal ratio, quicken to finish-the smelting task of stove steel.
Description of drawings:
Fig. 1 is a structural representation of the present invention;
Fig. 2 is that A of the present invention is to view;
Embodiment:
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
The present invention adopts electric-pole horizontal arm 5 fixedly connected electrode lifting devices 15.Electrode lifting device 15 mainly is made up of electrode mast 2, hoist cylinder 1, pulley 3.Hoist cylinder 1 is installed in the electrode mast 2, and pulley 3 is installed on electrode mast 2.On electric-pole horizontal arm 5, settle loose electrode oil cylinder 4 and fastening spring 6, gripping unit 7 is installed on the electric-pole horizontal arm 5, and oxygen rifle 8 is packed in the gripping unit 7, and inserts in the electric furnace from electric furnace 13 tops, oxygen hose 9 is equipped with on oxygen rifle 8 tops, and its oxygen rifle lower end is shaped on 5-15 oxygen Lavalle spray orifice 14.Oxygen rifle cooling water inlet pipe 10 and oxygen rifle cooling rising pipe 11 also are housed on oxygen rifle 8.
The present invention adopts electric-pole horizontal arm 5 and electrode mast 2 to connect together, by the lifting of hoist cylinder 1 control electrode column, thus the lifting of control electrode transverse arm 5.Adopt oxygen rifle 8 to replace original electrode, put into gripping unit 7, clamp by gripping unit 7.Oxygen rifle 8 is inserted in the electric furnace 13, to molten steel 12 tops by hoist cylinder 1 control top.By the clamping of loose electrode oil cylinder 4 and fastening spring 6 control oxygen rifles 8 with unclamp, oxygen rifle 8 enters and carries out water cooling from flowing out of rising pipe of oxygen rifle cooling from oxygen rifle water inlet pipe 10 by water coolant, oxygen is imported from oxygen hose 9, from spray orifice 14 holes, Lavalle, oxygen rifle 8 lower end, spray again, be blown in the molten steel 12 molten steel in the oxidized still.
Claims (3)
1. the top blowing oxygen device of an electric furnace arrangement for producing steel, mainly by electric-pole horizontal arm (5) connection electrode lifting device (15), go up installing electrodes oil cylinder (4) and fastening spring (6) at electric-pole horizontal arm (5), gripping unit (7) is installed on the electric-pole horizontal arm (5), it is characterized in that adopting oxygen rifle (8) to be installed in the gripping unit (7), and in electric furnace (13) top insertion electric furnace, oxygen hose (9) is housed in oxygen rifle (8) upper end, its lower end is shaped on spray orifice (14).
2, the top blowing oxygen device of electric furnace arrangement for producing steel according to claim 1, it is characterized in that described electrode lifting device (15) mainly is made up of electrode mast (2), hoist cylinder (1), pulley (3), hoist cylinder (1) is installed in the electrode mast (2), goes up at electrode mast (2) pulley (3) is installed.
3, the item oxygen blowing device of electric furnace arrangement for producing steel according to claim 1 is characterized in that described spray orifice (14) is 5-15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03131791XA CN1485449A (en) | 2003-07-26 | 2003-07-26 | Top-blowing oxygen apparatus for electric-arc steel furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03131791XA CN1485449A (en) | 2003-07-26 | 2003-07-26 | Top-blowing oxygen apparatus for electric-arc steel furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1485449A true CN1485449A (en) | 2004-03-31 |
Family
ID=34153874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA03131791XA Pending CN1485449A (en) | 2003-07-26 | 2003-07-26 | Top-blowing oxygen apparatus for electric-arc steel furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1485449A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962699A (en) * | 2010-10-30 | 2011-02-02 | 山西太钢不锈钢股份有限公司 | High-iron proportion steel-making method of electric furnace with eccentric bottom |
| CN102634633A (en) * | 2012-03-30 | 2012-08-15 | 山西太钢不锈钢股份有限公司 | Method for preventing materials at bottom of ultra-high power electric furnace from insufficiently melting |
| CN111088413A (en) * | 2019-12-12 | 2020-05-01 | 林益梅 | Steelmaking device capable of achieving sufficient oxidation and low waste residue ratio based on intermittent motion |
| CN112760450A (en) * | 2020-12-21 | 2021-05-07 | 江苏省镔鑫钢铁集团有限公司 | Two-step composite micro-alloying method and device for 400 MPa-grade deformed steel bar |
-
2003
- 2003-07-26 CN CNA03131791XA patent/CN1485449A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962699A (en) * | 2010-10-30 | 2011-02-02 | 山西太钢不锈钢股份有限公司 | High-iron proportion steel-making method of electric furnace with eccentric bottom |
| CN102634633A (en) * | 2012-03-30 | 2012-08-15 | 山西太钢不锈钢股份有限公司 | Method for preventing materials at bottom of ultra-high power electric furnace from insufficiently melting |
| CN111088413A (en) * | 2019-12-12 | 2020-05-01 | 林益梅 | Steelmaking device capable of achieving sufficient oxidation and low waste residue ratio based on intermittent motion |
| CN112760450A (en) * | 2020-12-21 | 2021-05-07 | 江苏省镔鑫钢铁集团有限公司 | Two-step composite micro-alloying method and device for 400 MPa-grade deformed steel bar |
| CN112760450B (en) * | 2020-12-21 | 2022-03-04 | 江苏省镔鑫钢铁集团有限公司 | A two-step composite microalloying method and device for 400MPa grade rebar |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |