CN107906972A - The electric arc furnaces furnace wall cover of flue dust can be reduced - Google Patents
The electric arc furnaces furnace wall cover of flue dust can be reduced Download PDFInfo
- Publication number
- CN107906972A CN107906972A CN201711286260.XA CN201711286260A CN107906972A CN 107906972 A CN107906972 A CN 107906972A CN 201711286260 A CN201711286260 A CN 201711286260A CN 107906972 A CN107906972 A CN 107906972A
- Authority
- CN
- China
- Prior art keywords
- furnace wall
- electric arc
- arc furnaces
- flue dust
- wall cover
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/003—Extraction of waste gases, collection of fumes and hoods used therefor of waste gases emanating from an electric arc furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D2099/0085—Accessories
- F27D2099/0093—Means to collect ashes or dust, e.g. vessels
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The present invention provides a kind of electric arc furnaces furnace wall cover that can reduce flue dust, including：Cover furnace wall, ring is located at outside the furnace wall of electric arc furnaces and can vertically be moved up and down relative to the furnace wall of electric arc furnaces, furnace wall cover is the tubular structure of vertically both ends open, furnace wall cover, which has, forms hollow cavity between inner and outer wall and inner and outer wall, multiple air suction openings are provided with inner wall, each air suction opening is connected with hollow cavity；Dedusting component, on the outer wall, dedusting component is connected with hollow cavity for connection.The invention has the advantages that furnace wall cover can rise to electric arc furnaces inlet vertically when electric arc furnaces adds steel scrap, negative pressure is caused at air suction opening by dedusting component, so that trapping steel scrap occurs flue dust caused by shock, reduces flue dust effusion.Since furnace wall cover is nearer apart from electric arc furnaces entrance, the arresting efficiency of flue dust can be effectively improved, ensures that workshop condition is good.
Description
Technical field
The present invention relates to electric-arc furnace steelmaking field, is specifically a kind of electric arc furnaces furnace wall cover that can reduce flue dust.
Background technology
As Environmental Protection in China requirement is more and more stringenter, electric arc furnaces flue dust also has become the problem of metallargist pays close attention to.
Top charging electric arc furnaces adds steel scrap to need to open bell every time, and overhead traveling crane opens material basket, and steel scrap is fallen into electric furnace from material basket.Due to a large amount of
Steel scrap falls into electric arc furnaces from the material basket in high-altitude, and steel scrap can be hit with electric arc furnaces molten bath etc., produce volume of smoke.
The flue dust produced during reply plus steel scrap, the technology more popularized at present is roof cover dedusting.Due to flue dust temperature
Degree is higher, and flue dust can slowly rise, in addition the negative pressure at roof cover, and flue dust can be trapped by roof cover.However, roof cover dedusting is imitated
Fruit is not ideal, and most domestic electric arc furnaces mill floor, which all falls, a thick layer dust.
The shortcomings that prior art：Roof cover is usually located at the top of workshop, and distance produces distance at the electric arc furnaces of flue dust and far, needs
Dust removing effects can just be reached by configuring Wind Volume dust pelletizing system, and equipment investment is big, and wind turbine power consumption is big, and operation cost is high.
The content of the invention
The present invention provides a kind of electric arc furnaces furnace wall cover that can reduce flue dust, to achieve the purpose that to reduce flue dust effusion.
The technical solution adopted by the present invention to solve the technical problems is：A kind of electric arc furnaces furnace wall cover that can reduce flue dust,
Including：Furnace wall is covered, and ring is located at outside the furnace wall of electric arc furnaces and can vertically be moved up and down relative to the furnace wall of electric arc furnaces, stove
Wall cover is the tubular structure of vertically both ends open, and furnace wall cover is with formation between inner and outer wall and inner and outer wall
Cavity body, is provided with multiple air suction openings on inner wall, each air suction opening is connected with hollow cavity；Dedusting component, is connected to outer wall
On, dedusting component is connected with hollow cavity.
Further, furnace wall cover for vertically both ends open tubular structure, the inner wall of furnace wall cover and electric arc furnaces
There is gap between furnace wall.
Further, gap is more than or equal to 0.2m and is less than or equal to 0.5m.
Further, dedusting component includes dedusting pipeline and dedusting fan, and one end of dedusting pipeline is fixedly connected with outer wall
And connected with hollow cavity, the other end of dedusting pipeline is connected on dedusting fan.
Further, dedusting pipeline is a plurality of that along the circumferentially-spaced uniformly distributed of outer wall, every is removed for one end of a plurality of dedusting pipeline
One end of dirt pipeline is connected with hollow cavity, and the other end of a plurality of dedusting pipeline is both connected on dedusting fan.
Further, the electric arc furnaces furnace wall cover that can reduce flue dust further includes drive component, and fixed setting on the ground, drives
Component connects with furnace wall cover and furnace wall cover can be driven vertically to be moved relative to the furnace wall of electric arc furnaces.
Further, drive component is hydraulic lift.
Further, drive component is Motorized lift device.
Further, air suction opening is rectangular opening, and multiple air suction openings are along the circumferentially-spaced uniformly distributed of inner wall.
The invention has the advantages that furnace wall cover can rise to electric arc furnaces entrance vertically when electric arc furnaces adds steel scrap
Place, negative pressure is caused by dedusting component at air suction opening, so that trapping steel scrap occurs flue dust caused by shock, reduces flue dust ease
Go out.Since furnace wall cover is nearer apart from electric arc furnaces entrance, the arresting efficiency of flue dust can be effectively improved, ensures that workshop condition is good.
Brief description of the drawings
The accompanying drawings which form a part of this application are used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its explanation are used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of the embodiment of the present invention；
Fig. 2 is the section structure diagram that furnace wall is covered in the embodiment of the present invention.
Reference numeral in figure：10th, furnace wall is covered；11st, inner wall；12nd, outer wall；13rd, hollow cavity；14th, air suction opening；20th, dedusting
Pipeline；30th, drive component.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.Below with reference to the accompanying drawings and the present invention will be described in detail in conjunction with the embodiments.
As depicted in figs. 1 and 2, an embodiment of the present invention provides a kind of electric arc furnaces furnace wall cover that can reduce flue dust, including stove
Wall cover 10, dedusting component and drive component 30.Furnace wall cover 10 is located at outside the furnace wall of electric arc furnaces 40, and furnace wall cover 10 is set with interval
The inner wall 11 and outer wall 12 put, form hollow cavity 13, multiple air suction openings are provided with inner wall 11 between inner wall 11 and outer wall 12
14, each air suction opening 14 is connected with hollow cavity 13.Dedusting component is connected on outer wall 12, dedusting component and hollow cavity 13
Connection；Drive component 30 is fixedly installed on the ground, and drive component 30 and furnace wall cover 10 be connected and furnace wall can be driven to cover 10 along erecting
Nogata is moved to relative to the furnace wall of electric arc furnaces 40.
Furnace wall cover 10 in the embodiment of the present invention can rise to electric arc furnaces inlet vertically when electric arc furnaces adds steel scrap,
Negative pressure is caused at air suction opening 14 by dedusting component, so that trapping steel scrap occurs flue dust caused by shock, reduces flue dust ease
Go out.Since furnace wall cover 10 is nearer apart from electric arc furnaces entrance, the arresting efficiency of flue dust can be effectively improved, ensures that workshop condition is good
It is good.
It should be noted that dotted portion rises to the schematic diagram of operating position for furnace wall cover 10 in Fig. 1.Dust suction in Fig. 2
Hole 14 is rectangular opening, and multiple air suction openings 14 are along the circumferentially-spaced uniformly distributed of inner wall 11.The shape of air suction opening 14 in the embodiment of the present invention
Above-mentioned rectangle hole shape is not limited to, can also be round hole or square hole, needs to be chosen with different operating environment.
As shown in Figure 1, furnace wall cover 10 is the tubular structure of vertically both ends open, (both ends that i.e. furnace wall covers 10 are
Opening, lower end can be such that electric arc furnaces 40 is threaded through in furnace wall cover 10, and upper end can add steel scrap to electric arc furnaces 40), furnace wall cover 10
Inner wall 11 and electric arc furnaces 40 furnace wall between there is gap.Specifically, the gap be more than or equal to 0.2m and be less than or
Equal to 0.5m.It will be arranged at intervals between the inner wall 11 and electric arc furnaces 40 of furnace wall cover 10, it is therefore an objective to ensure that furnace wall cover 10 was lifting
It will not be interfered between electric arc furnaces 40 in journey.By the gap setting within the above range, the dust suction of dedusting component can be made
Best results.Meanwhile the gap setting within the above range when, for dedusting component air quantity demand compared with prior art in
Removing roof dust cover is small, can effectively cut operating costs.
Specifically, dedusting component includes dedusting pipeline 20 and dedusting fan (not shown), one end of dedusting pipeline 20 with it is outer
Wall 12 is fixedly connected and is connected with hollow cavity 13, and the other end of dedusting pipeline 20 is connected on dedusting fan.
Dedusting fan in the embodiment of the present invention is the prior art, its structure is not illustrated herein.Above-mentioned dust removing tube
Pipeline valve can be provided with road 20, for controlling the opening and closing of dedusting pipeline 20.
In a kind of embodiment (not shown), dedusting pipeline 20 is a plurality of, and one end of a plurality of dedusting pipeline 20 is along outer wall 12
It is circumferentially-spaced uniformly distributed, one end of every dedusting pipeline 20 is connected with hollow cavity 13, the other end of a plurality of dedusting pipeline 20
It is both connected on dedusting fan.
A plurality of dedusting pipeline 20 is set, it is ensured that the negative-pressure sucking in hollow cavity 13 is basically identical, will not cause to inhale
The non-uniform situation of power.The other end of above-mentioned dedusting pipeline 20 can use connection valve connect, i.e., a plurality of dedusting pipeline 20 it is another
One end is both connected in connection valve, and the port of export of the connection valve is connected on dedusting fan.
Drive component 30 in the embodiment of the present invention is supported on ground, and lower surface and the ground of the drive component are fixed
Connection, the drive component upper end are provided with lifting arm, which is connected with the lower end of furnace wall cover 10, and furnace wall cover 10 can be with liter
Drop arm moves up and down.Specifically, the drive component 30 in the embodiment of the present invention is hydraulic lift or Motorized lift device,
The structure of above-mentioned hydraulic lift and Motorized lift device is with identical in the prior art, and details are not described herein again.
When electric arc furnaces 40 will add steel scrap, electric arc furnaces 40 powers off and lifts bell and electrode, then unscrews bell, crane
After slinging material basket to the top of electric arc furnaces 40 of fully loaded steel scrap, concrete operation step is as follows：
Start drive component 30, furnace wall cover 10 is risen, when furnace wall cover 10 is raised up to setting position, start dedusting group
Part.
, crane, which is opened, expects basket, expects that the steel scrap in basket falls into the molten bath of electric arc furnaces 40 and produces volume of smoke.Due to dedusting
Component has been switched on, and is negative pressure in the air suction opening 14 and hollow cavity 13 of furnace wall cover 10, and the flue dust of generation passes sequentially through furnace wall cover
Enter dedusting fan after air suction opening 14, hollow cavity 13 and dedusting pipeline 20 on 10, achieve the purpose that to remove flue dust collecting.
After adding steel scrap process, dedusting component is closed.It is again started up drive component 30, furnace wall cover 10 is lowered back to original
Position.
The bell of cycle electric arc furnaces 40, falls electrode, prepares to be powered and smelts.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect：
Open bell to add during steel scrap, drive component 30 is opened, and furnace wall cover 10 rises, and steel scrap is hit with molten bath
Caused flue dust can be trapped effectively, is reduced flue dust effusion, is kept good electric furnace shop environment.
Furnace wall cover 10 and distance at flue dust generation are near, and tubular structure can wrap the flue dust of generation, therefore when adding steel scrap
Dust removing effects are far superior to the dust removing effects of roof cover.
Roof cover is located at factory roof, and area is big, and dedusting air quantity is big, therefore equipment investment is high, operation cost is high, the present invention
Furnace wall cover 10 equipment it is compact, institute's required airflow is small, and equipment investment is small, operation cost is low.
The above, is only the specific embodiment of the present invention, it is impossible to the scope implemented with its restriction invention, so it is equivalent
The displacement of component, or the equivalent variations made according to scope of patent protection of the present invention and modification, should all still fall within what this patent was covered
Category.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technical solution, technical solution with
Use can be freely combined between technical solution.
Claims (9)
- A kind of 1. electric arc furnaces furnace wall cover that can reduce flue dust, it is characterised in that including：(10) are covered in furnace wall, and ring is located at outside the furnace wall of electric arc furnaces (40) and can be vertically relative to the furnace wall of electric arc furnaces (40) Move up and down, furnace wall cover (10) is the tubular structure of vertically both ends open, and furnace wall cover (10) is with inner wall (11) and outside Hollow cavity (13) is formed between wall (12) and inner wall (11) and outer wall (12), inner wall is provided with multiple air suction openings on (11) (14), each air suction opening (14) connects with hollow cavity (13)；Dedusting component, is connected on outer wall (12), and the dedusting component is connected with hollow cavity (13).
- 2. the electric arc furnaces furnace wall cover according to claim 1 that flue dust can be reduced, it is characterised in that furnace wall cover (10) is along perpendicular Nogata has gap to the tubular structure of both ends open between the inner wall (11) of furnace wall cover (10) and the furnace wall of electric arc furnaces (40).
- 3. it is according to claim 2 can reduce flue dust electric arc furnaces furnace wall cover, it is characterised in that the gap be more than or Equal to 0.2m, and the gap is less than or equal to 0.5m.
- 4. the electric arc furnaces furnace wall cover according to claim 1 that flue dust can be reduced, it is characterised in that the dedusting component includes Dedusting pipeline (20) and dedusting fan, one end of the dedusting pipeline (20) is fixedly connected with outer wall (12) and and hollow cavity (13) connect, the other end of the dedusting pipeline (20) is connected on the dedusting fan.
- 5. the electric arc furnaces furnace wall cover according to claim 4 that flue dust can be reduced, it is characterised in that the dedusting pipeline (20) To be a plurality of, one end of a plurality of dedusting pipeline (20) is along the circumferentially-spaced uniformly distributed of outer wall (12), one end of every dedusting pipeline (20) Connected with hollow cavity (13), the other end of a plurality of dedusting pipeline (20) is both connected on the dedusting fan.
- 6. the electric arc furnaces furnace wall cover according to claim 1 that flue dust can be reduced, it is characterised in that the electric arc of flue dust can be reduced Stove furnace wall cover further includes drive component (30), and on the ground, drive component (30) is connected with furnace wall cover (10) and energy for fixed setting Furnace wall cover (10) is driven vertically to be moved relative to the furnace wall of electric arc furnaces (40).
- 7. the electric arc furnaces furnace wall cover according to claim 6 that flue dust can be reduced, it is characterised in that the driving component (30) For hydraulic lift.
- 8. the electric arc furnaces furnace wall cover according to claim 6 that flue dust can be reduced, it is characterised in that the driving component (30) For Motorized lift device.
- 9. the electric arc furnaces furnace wall cover according to claim 1 that flue dust can be reduced, it is characterised in that air suction opening (14) is rectangle Hole, multiple air suction openings (14) are along the circumferentially-spaced uniformly distributed of inner wall (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286260.XA CN107906972B (en) | 2017-12-07 | 2017-12-07 | Electric arc furnace wall cover capable of reducing smoke dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711286260.XA CN107906972B (en) | 2017-12-07 | 2017-12-07 | Electric arc furnace wall cover capable of reducing smoke dust |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107906972A true CN107906972A (en) | 2018-04-13 |
| CN107906972B CN107906972B (en) | 2023-01-31 |
Family
ID=61854808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711286260.XA Active CN107906972B (en) | 2017-12-07 | 2017-12-07 | Electric arc furnace wall cover capable of reducing smoke dust |
Country Status (1)
| Country | Link |
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| CN (1) | CN107906972B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833676A (en) * | 2020-12-24 | 2021-05-25 | 北京航星机器制造有限公司 | Annular side suction cover for crucible dust removal and dust collection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599431A1 (en) * | 1992-11-24 | 1994-06-01 | MANNESMANN Aktiengesellschaft | Steel plant incorporating a metallurgical vessel mounted in a circular support ring |
| CN2200806Y (en) * | 1994-11-19 | 1995-06-14 | 重庆康达环保成套设备公司 | Smoke dust collecting device of single-electrode D.C. arc furnace |
| CN2239606Y (en) * | 1995-06-30 | 1996-11-06 | 冶金工业部重庆钢铁设计研究院 | Local fume exhaust cover for d.c electric arc furnace |
| CN201362729Y (en) * | 2009-03-04 | 2009-12-16 | 无锡东雄重型电炉有限公司 | Electric arc furnace semi-sealed cover smoke discharging dedusting system |
| CN201364035Y (en) * | 2009-01-23 | 2009-12-16 | 无锡东雄重型电炉有限公司 | Movable semi-closed guiding cover |
| CN202630689U (en) * | 2012-04-27 | 2012-12-26 | 西安越达环保科技有限公司 | Fixed sealing dust-removal furnace cover and nonmetal smelting furnace |
| CN207763477U (en) * | 2017-12-07 | 2018-08-24 | 中冶京诚工程技术有限公司 | The electric arc furnaces furnace wall cover of flue dust can be reduced |
-
2017
- 2017-12-07 CN CN201711286260.XA patent/CN107906972B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0599431A1 (en) * | 1992-11-24 | 1994-06-01 | MANNESMANN Aktiengesellschaft | Steel plant incorporating a metallurgical vessel mounted in a circular support ring |
| CN2200806Y (en) * | 1994-11-19 | 1995-06-14 | 重庆康达环保成套设备公司 | Smoke dust collecting device of single-electrode D.C. arc furnace |
| CN2239606Y (en) * | 1995-06-30 | 1996-11-06 | 冶金工业部重庆钢铁设计研究院 | Local fume exhaust cover for d.c electric arc furnace |
| CN201364035Y (en) * | 2009-01-23 | 2009-12-16 | 无锡东雄重型电炉有限公司 | Movable semi-closed guiding cover |
| CN201362729Y (en) * | 2009-03-04 | 2009-12-16 | 无锡东雄重型电炉有限公司 | Electric arc furnace semi-sealed cover smoke discharging dedusting system |
| CN202630689U (en) * | 2012-04-27 | 2012-12-26 | 西安越达环保科技有限公司 | Fixed sealing dust-removal furnace cover and nonmetal smelting furnace |
| CN207763477U (en) * | 2017-12-07 | 2018-08-24 | 中冶京诚工程技术有限公司 | The electric arc furnaces furnace wall cover of flue dust can be reduced |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833676A (en) * | 2020-12-24 | 2021-05-25 | 北京航星机器制造有限公司 | Annular side suction cover for crucible dust removal and dust collection method thereof |
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| Publication number | Publication date |
|---|---|
| CN107906972B (en) | 2023-01-31 |
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