CN204111798U - For the bottom blowing layout structure of converter smelting device - Google Patents
For the bottom blowing layout structure of converter smelting device Download PDFInfo
- Publication number
- CN204111798U CN204111798U CN201420635479.1U CN201420635479U CN204111798U CN 204111798 U CN204111798 U CN 204111798U CN 201420635479 U CN201420635479 U CN 201420635479U CN 204111798 U CN204111798 U CN 204111798U
- Authority
- CN
- China
- Prior art keywords
- gas supply
- molten bath
- supply elements
- slag
- layout structure
- 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.)
- Expired - Fee Related
Links
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model discloses a kind of bottom blowing layout structure for converter smelting device, comprise molten bath furnace bottom, molten bath furnace bottom is furnished with six pieces of gas supply elements, and six gas supply elements are symmetrical with the medullary ray of side of tapping, wherein, two gas supply elements are arranged on the intersection that diameter is 0.42D concentric circumferences and gudgeon line, in addition, it is in 0.6D concentric circumferences that four gas supply elements are arranged on diameter, and each gas supply element becomes α angle with the medullary ray of tapping side.The utility model is formed while the end stirs to molten metal and covering slag between Huo Dian district, molten bath and furnace wall, for falling into slag making raw material accumulation area in molten bath and weak stirring area provides Bottom Gas Stirring, improving oxygen supply slag making efficiency, promoting slag-steel reaction; Also adjustable winding-up layout acceleration level flows, forms large circulation to improve mixing dead band, promotes that the separation of foreign impurity in steel is removed.
Description
Technical field
The utility model relates to converter smelting technical field, is specifically related to a kind of bottom blowing layout structure for converter smelting device.
Background technology
The metallurgy industry converter steelmaking stove labour cycle is long, the supplies consumptions such as melting bath stirring deficiency easily appears in production process, slag charge melts slowly, lime are large, slag-steel reacts imbalance etc. problem, not only affect production efficiency, cost and technology stability, also hinder variety and quality upgrading.Under the existing operational condition of steel mill, how to overcome these problems existed in prior art, improve the effect and quality produced, become a restricted link of bottom-blowing of converter technical progress.
Application number be 201220247413.6 Chinese utility model patent disclose a kind of topology layout of top bottom blowing converter bottom blowing air brick, be characterized in that furnace bottom adopts the gas permeable brick of three pieces of asymmetric layout, gas permeable brick is arranged in the concentric circumferences of molten bath furnace bottom diameter 0.45 times, can form molten bath entirety circulation and improve mixing time and metallurgical effect.But for medium-sized and above top and bottom blown converter, the bottom blowing layout structure of small vessel might not adapt to the uniform stirring needed for large molten bath and change slag melting.
At present, when steelworks uses 80 tons of top and bottom blown converter, have employed the bottom blowing layout structure shown in Fig. 1.This molten bath furnace bottom arranges four pieces of gas supply elements, and every block gas supply element is positioned at the intersection that furnace bottom diameter 0.6 times of circumference and tapping side center line become 30 degree of angle lines respectively.This bottom-blowing air feed element layout structure is convenient to safeguard, work-ing life is long.
But also there is following problem in smelting is applied: the slag material fusing that converter steelmaking process adds is not enough, and melting bath stirring is uneven, adds the stirring of Zha Ji drop point district weak, greatly, before tapping, process slag and refractory materials pollute molten steel for lime, flow of oxygen consumption.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, providing a kind of is the bottom blowing layout structure for converter smelting device, this device layout stirs uniformly and effectively for molten bath provides, and improves smelting process slag efficiency of oxygen supply, improves converter molten steel degree of cleaning.
For achieving the above object, a kind of bottom blowing layout structure for converter smelting device designed by the utility model, comprise molten bath furnace bottom, described molten bath furnace bottom is furnished with six pieces of gas supply elements, and six gas supply elements are symmetrical with the medullary ray of side of tapping, wherein, two gas supply elements are arranged on the intersection that diameter is 0.42D concentric circumferences and gudgeon line, and these two gas supply elements provide Bottom Gas Stirring to the slag making raw material accumulation area and weak stirring area that add molten bath; Every block gas supply element flow and pressure Independent adjustable, can judge that whether bottom-blowing air feed element blocks, and stops according to smelting technology or keeps Gas injection voluntarily, bottom blowing inert gas flow degree of amplitude modulation is 0 ~ 0.20Nm
3/ mint.In addition, it is in 0.6D concentric circumferences that four gas supply elements are arranged on diameter, and each gas supply element becomes α angle with the medullary ray of tapping side.These four gas supply elements form bottom blowing stirring to the molten metal between Huo Dian district, molten bath and furnace wall and the slag covered on it.
Further, described α angle=30 °, the angle bottom-blowing air feed element layout structure of this 30 ° is convenient to safeguard, work-ing life is long
The beneficial effects of the utility model:
1) the utility model is formed while the end stirs to molten metal and covering slag between Huo Dian district, molten bath and furnace wall, and for falling into slag making raw material accumulation area in molten bath and weak stirring area provides Bottom Gas Stirring, promote non-slag material to fire point direction mobile slag, improve oxygen supply slag making efficiency, promote slag-steel reaction.
2) the utility model can dynamic conditioning melt fluidised form, and acceleration level flowing and desulphurization upgrade, form three-dimensional large circulation improves mixing dead band, overcome that terminal slag coil of strip mixes, refractory corrosion, in promotion steel the separation of foreign impurity remove.
3) test of the utility model converter smelting shows, ton steel mean consumption before and after improved scheme: lime reduces 5.4Kg, oxygen reduces 195Nm
3, in steel, oxide inclusion total amount reduces by 40%, is applicable to top and bottom blown converter, particularly the converter smelting device of 80 ~ 90 tons.
Accompanying drawing explanation
Fig. 1 is top and bottom blown converter bottom blowing element layout structure figure in prior art;
Fig. 2 is the bottom blowing layout structure for converter smelting device in the utility model;
Fig. 3 is the layout structure figure using 3 pieces of bottom-blowing of converter elements in the utility model;
In figure, gas supply element 1; Diameter is the molten bath furnace bottom 2 of D, and wherein, D is molten bath furnace bottom diameter; Diameter is the concentric circumferences 3 of 0.6D; Diameter is the concentric circumferences 4 of 0.42D; Gudgeon line 5, tapping side 6.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, so that those skilled in the art understand.
Embodiment 1
A kind of bottom blowing layout structure for converter smelting device as described in Figure 2, comprise molten bath furnace bottom 2, molten bath furnace bottom 2 is furnished with six pieces of gas supply elements 1, and six gas supply elements 1 are symmetrical with the medullary ray of side 6 of tapping, wherein, two gas supply elements 1 are arranged on the intersection that diameter is 0.42D concentric circumferences 4 and gudgeon line 5, and these two gas supply elements 1 provide Bottom Gas Stirring to the slag making raw material accumulation area and weak stirring area that add molten bath; Every block gas supply element flow and pressure Independent adjustable, can judge that whether bottom-blowing air feed element blocks, and stops according to smelting technology or keeps Gas injection voluntarily, bottom blowing inert gas flow degree of amplitude modulation is 0 ~ 0.20Nm
3/ mint.In addition, it is in 0.6D concentric circumferences 3 that four gas supply elements 1 are arranged on diameter, and each gas supply element 1 becomes the angle of 30 ° with the medullary ray of tapping side 6, wherein, the molten metal between this four gas supply elements Huo Dian district, 1 pair of molten bath and furnace wall and the slag covered on it form bottom blowing stirring.
Test-results shows, compared with before improvement, and the lime loss per ton steel decreased average 5.4Kg of top and bottom blown converter, oxygen loss per ton steel decreased average 195Nm
3.
Embodiment 2
As shown in Figure 3, after top blast terminates, bottom blowing layout setting becomes following structure of jetting: tapping any side of medullary ray, side 6 furnace bottom gas supply element 1 keeps winding-up state, tapping side 6 medullary ray opposite side furnace bottom gas supply element 1 is set to zero winding-up, bottom blowing inert gas flow≤0.03m3/min.t, there is provided directed circulation to reduce to molten bath and stir dead band, the particle that in cleaning steel, mixed slag, refractory corrosion are brought into.Test-results shows, in converter steel, oxide inclusion content reduces 40% before improving.
Other unspecified part is prior art.Although above-described embodiment has made detailed description to the utility model; but it is only the utility model part embodiment; instead of whole embodiment; people can also according to the present embodiment; under without creative prerequisite, obtain other embodiments, these embodiments all belong to protection domain of the present utility model.
Claims (2)
1. for the bottom blowing layout structure of converter smelting device, comprise molten bath furnace bottom (2), it is characterized in that: described molten bath furnace bottom (2) is furnished with six pieces of gas supply elements (1), and six gas supply elements (1) are symmetrical with the medullary ray of side of tapping (6), wherein, two gas supply elements (1) are arranged on the intersection that diameter is 0.42D concentric circumferences (4) and gudgeon line (5); In addition, it is in 0.6D concentric circumferences (3) that four gas supply elements (1) are arranged on diameter, and each gas supply element (1) becomes α angle with the medullary ray of tapping side (6).
2. according to claim 1 for the bottom blowing layout structure of converter smelting device, it is characterized in that: described α angle=30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635479.1U CN204111798U (en) | 2014-10-29 | 2014-10-29 | For the bottom blowing layout structure of converter smelting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635479.1U CN204111798U (en) | 2014-10-29 | 2014-10-29 | For the bottom blowing layout structure of converter smelting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204111798U true CN204111798U (en) | 2015-01-21 |
Family
ID=52329131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420635479.1U Expired - Fee Related CN204111798U (en) | 2014-10-29 | 2014-10-29 | For the bottom blowing layout structure of converter smelting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204111798U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104673969A (en) * | 2015-01-22 | 2015-06-03 | 河北钢铁股份有限公司承德分公司 | Method and device for promoting slag liquid in half ladle to directionally flow |
| CN105603146A (en) * | 2016-02-25 | 2016-05-25 | 钢铁研究总院 | Converter bottom blowing element air-supply method conducting grouping, timing and rotary switching according to intensity |
| CN107099640A (en) * | 2017-04-10 | 2017-08-29 | 首钢总公司 | A kind of top and bottom combined blown converter and bottom blowing method |
| CN108546797A (en) * | 2018-05-28 | 2018-09-18 | 河南科技大学 | A kind of bottom-blowing of converter method and converter |
| CN110343800A (en) * | 2019-07-03 | 2019-10-18 | 邯郸钢铁集团有限责任公司 | A kind of bottom-blowing of converter technique of bottom blowing brick grouping air blowing control |
| CN110846459A (en) * | 2019-12-17 | 2020-02-28 | 中冶南方工程技术有限公司 | Converter and smelting method thereof |
| CN111041149A (en) * | 2019-12-23 | 2020-04-21 | 河钢股份有限公司承德分公司 | Method for improving bottom blowing effect of converter |
| CN114921610A (en) * | 2022-06-02 | 2022-08-19 | 中天钢铁集团(南通)有限公司 | Converter bottom blowing hole distribution structure and bottom blowing method thereof |
| CN115595398A (en) * | 2021-06-28 | 2023-01-13 | 宝山钢铁股份有限公司（Cn） | Anti-blocking long-life type converter bottom blowing device and application thereof |
| CN118347293A (en) * | 2024-06-14 | 2024-07-16 | 河南瑞德克气力输送设备有限公司 | Intelligent quantitative injection device for nonferrous metal smelting |
-
2014
- 2014-10-29 CN CN201420635479.1U patent/CN204111798U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104673969B (en) * | 2015-01-22 | 2016-08-31 | 河北钢铁股份有限公司承德分公司 | The method and apparatus of slag liquid directed flow in a kind of promotion half ladle |
| CN104673969A (en) * | 2015-01-22 | 2015-06-03 | 河北钢铁股份有限公司承德分公司 | Method and device for promoting slag liquid in half ladle to directionally flow |
| CN105603146A (en) * | 2016-02-25 | 2016-05-25 | 钢铁研究总院 | Converter bottom blowing element air-supply method conducting grouping, timing and rotary switching according to intensity |
| CN107099640A (en) * | 2017-04-10 | 2017-08-29 | 首钢总公司 | A kind of top and bottom combined blown converter and bottom blowing method |
| CN108546797A (en) * | 2018-05-28 | 2018-09-18 | 河南科技大学 | A kind of bottom-blowing of converter method and converter |
| CN110343800B (en) * | 2019-07-03 | 2021-08-20 | 邯郸钢铁集团有限责任公司 | Converter bottom blowing process for bottom blowing brick grouping blowing control |
| CN110343800A (en) * | 2019-07-03 | 2019-10-18 | 邯郸钢铁集团有限责任公司 | A kind of bottom-blowing of converter technique of bottom blowing brick grouping air blowing control |
| CN110846459A (en) * | 2019-12-17 | 2020-02-28 | 中冶南方工程技术有限公司 | Converter and smelting method thereof |
| CN110846459B (en) * | 2019-12-17 | 2023-09-15 | 中冶南方工程技术有限公司 | Converter and smelting method thereof |
| CN111041149A (en) * | 2019-12-23 | 2020-04-21 | 河钢股份有限公司承德分公司 | Method for improving bottom blowing effect of converter |
| CN115595398A (en) * | 2021-06-28 | 2023-01-13 | 宝山钢铁股份有限公司（Cn） | Anti-blocking long-life type converter bottom blowing device and application thereof |
| CN114921610A (en) * | 2022-06-02 | 2022-08-19 | 中天钢铁集团(南通)有限公司 | Converter bottom blowing hole distribution structure and bottom blowing method thereof |
| CN118347293A (en) * | 2024-06-14 | 2024-07-16 | 河南瑞德克气力输送设备有限公司 | Intelligent quantitative injection device for nonferrous metal smelting |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204111798U (en) | For the bottom blowing layout structure of converter smelting device | |
| CN107299181B (en) | The method of converter gasification dephosphorized slag circulation dephosphorization steel-making | |
| KR20180125572A (en) | A method of melting and reducing iron by stirring vortex | |
| CN105132612B (en) | Converter less slag smelting early stage deslagging control method | |
| CN105525055B (en) | A kind of control method of converter less-slag melting carbon period splash | |
| CN104178594B (en) | A kind of method of converter simply connected vanadium extraction steel-making | |
| CN106435086B (en) | A kind of semi-steel making carburetting slagging agent and its application method | |
| CN201176446Y (en) | Bottom bowing layout structure for medium top-bottom combined blown converter | |
| CN102234703A (en) | On-line thermal state cleaning method for accumulated burl on mechanical desulfuration stirring paddle by using knotted reactor (KR) method | |
| CN105177217B (en) | A kind of technique for reducing the converter smelting slag quantity of slag | |
| CN108546797B (en) | Converter bottom blowing method and converter | |
| CN106086314A (en) | A kind of method of refining of low-cost production potassium steel | |
| CN203602649U (en) | Bottom blowing structure for small-sized smelting container | |
| CN207537483U (en) | A kind of ladle rotation spray gun dephosphorization apparatus | |
| CN206721253U (en) | A kind of interim ball pivot device of converter | |
| JP2011111625A (en) | Steel-making method using iron scrap | |
| CN105112598B (en) | A kind of method that converter product bottom slag is directly used in pneumatic steelmaking | |
| CN202595182U (en) | Layout structure of bottom blowing air bricks of small-scale top and bottom combined blown converter | |
| CN202898458U (en) | Liquid iron desulfuration lime discharging pipe | |
| CN202836210U (en) | Smelting furnace tuyere brick | |
| CN216891065U (en) | Passivated magnesium desulfurizing agent | |
| JP5338251B2 (en) | Hot phosphorus dephosphorization method | |
| CN109825667A (en) | A kind of quick converter fettling method | |
| CN205329103U (en) | High -efficiency molten iron desulphurization spraying gun | |
| CN211854865U (en) | Novel furnace for smelting antimony ore side-blown flash mixed molten pool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170726 Address after: 430083, Hubei Wuhan Qingshan District Factory No. 2 Gate joint stock company organs Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Wuhan, Hubei, Wuchang Friendship Avenue, No. 999, block A, layer 15, layer Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| 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: 20150121 Termination date: 20181029 |