CN107906972B - Electric arc furnace wall cover capable of reducing smoke dust - Google Patents
Electric arc furnace wall cover capable of reducing smoke dust Download PDFInfo
- Publication number
- CN107906972B CN107906972B CN201711286260.XA CN201711286260A CN107906972B CN 107906972 B CN107906972 B CN 107906972B CN 201711286260 A CN201711286260 A CN 201711286260A CN 107906972 B CN107906972 B CN 107906972B
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- Prior art keywords
- wall
- dust
- electric arc
- arc furnace
- furnace wall
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- 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
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- 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
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- 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
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- 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
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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
Abstract
The invention provides an electric arc furnace wall cover capable of reducing smoke dust, which comprises: the furnace wall cover is annularly arranged outside the furnace wall of the electric arc furnace and can move up and down relative to the furnace wall of the electric arc furnace along the vertical direction, the furnace wall cover is of a cylindrical structure with two open ends along the vertical direction, the furnace wall cover is provided with an inner wall and an outer wall, a hollow cavity is formed between the inner wall and the outer wall, a plurality of dust collection holes are formed in the inner wall, and each dust collection hole is communicated with the hollow cavity; the dust removal assembly is connected to the outer wall and communicated with the hollow cavity. The invention has the advantages that the furnace wall cover can vertically rise to the inlet of the electric arc furnace when the electric arc furnace is added with the scrap steel, and negative pressure is generated at the dust suction hole through the dust removal component, so that the smoke generated when the scrap steel is collided is collected, and the escape of the smoke is reduced. Because the furnace wall cover is closer to the inlet of the electric arc furnace, the smoke dust collecting efficiency can be effectively improved, and the good workshop environment is ensured.
Description
Technical Field
The invention relates to the field of electric arc furnace steelmaking, in particular to an electric arc furnace wall cover capable of reducing smoke dust.
Background
Along with the more and more strict environmental protection requirements of China, the smoke dust of the electric arc furnace also becomes a concern of metallurgy workers increasingly. The furnace cover is required to be opened when the top charging electric arc furnace is charged with scrap steel each time, the material basket is opened by the crown block, and the scrap steel falls into the electric furnace from the material basket. Because a large amount of steel scraps fall into the electric arc furnace from the basket of high latitude, the steel scraps can take place the striking with electric arc furnace molten bath etc. and produce a large amount of smoke and dust.
The dust generated in the process of adding the scrap steel is dealt with, and the currently popular technology is roof cover dust removal. Because the smoke temperature is higher, the smoke will rise slowly, and the smoke will be caught by the roof cover in addition to the negative pressure at the roof cover. However, the dust removal effect of the roof cover is not ideal, and a layer of thick dust falls on the ground of most electric arc furnace workshops in China.
The prior art has the following disadvantages: the roof cover is usually located the factory building top, and the electric arc furnace department distance that produces the smoke and dust is far away, need dispose big amount of wind dust pelletizing system and just can reach dust removal effect, and equipment investment is big, and fan power consumption is big, and the operation cost is high.
Disclosure of Invention
The invention provides an electric arc furnace wall cover capable of reducing smoke dust, so as to achieve the purpose of reducing the escape of the smoke dust.
The technical scheme adopted by the invention for solving the technical problems is as follows: an electric arc furnace wall covering capable of reducing smoke and dust, comprising: the furnace wall cover is annularly arranged outside the furnace wall of the electric arc furnace and can move up and down relative to the furnace wall of the electric arc furnace along the vertical direction, the furnace wall cover is of a cylindrical structure with two open ends along the vertical direction, the furnace wall cover is provided with an inner wall and an outer wall, a hollow cavity is formed between the inner wall and the outer wall, a plurality of dust collection holes are formed in the inner wall, and each dust collection hole is communicated with the hollow cavity; the dust removal component is connected to the outer wall and communicated with the hollow cavity.
Furthermore, the furnace wall cover is of a cylindrical structure with two open ends in the vertical direction, and a gap is formed between the inner wall of the furnace wall cover and the furnace wall of the electric arc furnace.
Further, the gap is greater than or equal to 0.2m and less than or equal to 0.5m.
Furthermore, the dust removal assembly comprises a dust removal pipeline and a dust removal fan, one end of the dust removal pipeline is fixedly connected with the outer wall and communicated with the hollow cavity, and the other end of the dust removal pipeline is connected to the dust removal fan.
Furtherly, the dust removal pipeline is many, and the circumference interval equipartition of outer wall is followed to the one end of many dust removal pipelines, and the one end of every dust removal pipeline all communicates with the cavity body, and the other end of many dust removal pipelines all is connected on dust exhausting fan.
Further, the electric arc furnace wall cover capable of reducing smoke dust further comprises a driving assembly which is fixedly arranged on the ground, and the driving assembly is connected with the furnace wall cover and can drive the furnace wall cover to move relative to the furnace wall of the electric arc furnace along the vertical direction.
Further, the driving assembly is a hydraulic lifting device.
Further, the driving assembly is an electric lifting device.
Furthermore, the dust absorption hole is the rectangular hole, and a plurality of dust absorption holes are evenly distributed along the circumference of the inner wall at intervals.
The invention has the advantages that the furnace wall cover can vertically rise to the inlet of the electric arc furnace when scrap steel is added into the electric arc furnace, and negative pressure is generated at the dust suction hole through the dust removal assembly, so that smoke generated when the scrap steel is collided is collected, and the escape of the smoke is reduced. Because the furnace wall cover is closer to the inlet of the electric arc furnace, the smoke dust collecting efficiency can be effectively improved, and the good workshop environment is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic sectional view of a furnace wall cover according to an embodiment of the present invention.
Reference numbers in the figures: 10. a furnace wall cover; 11. an inner wall; 12. an outer wall; 13. a hollow cavity; 14. a dust collection hole; 20. a dust removal pipeline; 30. a drive assembly; 40. an electric arc furnace.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 and 2, an embodiment of the present invention provides an electric arc furnace wall mantle capable of reducing smoke, including a wall mantle 10, a dust removing assembly, and a driving assembly 30. The furnace wall cover 10 covers the furnace wall of the electric arc furnace 40, the furnace wall cover 10 is provided with an inner wall 11 and an outer wall 12 which are arranged at intervals, a hollow cavity 13 is formed between the inner wall 11 and the outer wall 12, a plurality of dust suction holes 14 are formed in the inner wall 11, and each dust suction hole 14 is communicated with the hollow cavity 13. The dust removal component is connected to the outer wall 12 and communicated with the hollow cavity 13; the driving assembly 30 is fixedly arranged on the ground, and the driving assembly 30 is connected with the furnace wall covering 10 and can drive the furnace wall covering 10 to move along the vertical direction relative to the furnace wall of the electric arc furnace 40.
The furnace wall cover 10 in the embodiment of the invention can vertically rise to the inlet of the electric arc furnace when the electric arc furnace is added with scrap steel, and negative pressure is generated at the dust suction hole 14 through the dust removal component, so that smoke generated when the scrap steel is collided is collected, and the escape of the smoke is reduced. Because the furnace wall cover 10 is close to the inlet of the electric arc furnace, the smoke dust collecting efficiency can be effectively improved, and the good workshop environment is ensured.
In fig. 1, the dashed part is a schematic view of the furnace wall cover 10 being raised to the operating position. In fig. 2, the dust suction holes 14 are rectangular holes, and a plurality of dust suction holes 14 are uniformly distributed at intervals along the circumferential direction of the inner wall 11. The shape of the dust collection hole 14 in the embodiment of the present invention is not limited to the rectangular hole shape, and may be a circular hole or a square hole, which is selected according to different working environment requirements.
As shown in fig. 1, the furnace wall cover 10 has a cylindrical structure with both ends open in the vertical direction (that is, both ends of the furnace wall cover 10 are open, the lower end enables the electric arc furnace 40 to be inserted into the furnace wall cover 10, and the upper end enables scrap steel to be added to the electric arc furnace 40), and a gap is provided between the inner wall 11 of the furnace wall cover 10 and the furnace wall of the electric arc furnace 40. Specifically, the gap is greater than or equal to 0.2m and less than or equal to 0.5m. The inner wall 11 of the furnace wall mantle 10 is spaced apart from the electric arc furnace 40 in order to ensure that the furnace wall mantle 10 does not interfere with the electric arc furnace 40 during the lifting and lowering. Setting the gap within the above range can optimize the dust collection effect of the dust collection assembly. Simultaneously, when this clearance setting was in above-mentioned within range, it was little to compare the roof dust excluding hood among the prior art to the amount of wind demand of dust removal subassembly, can effectively reduce the operation cost.
Specifically, the dust removing assembly includes a dust removing pipeline 20 and a dust removing fan (not shown), one end of the dust removing pipeline 20 is fixedly connected with the outer wall 12 and is communicated with the hollow cavity 13, and the other end of the dust removing pipeline 20 is connected to the dust removing fan.
The dust removal fan in the embodiment of the invention is the prior art, and the structure of the dust removal fan is not described here. The dust removing pipeline 20 may be provided with a pipeline valve for controlling the opening and closing of the dust removing pipeline 20.
In an embodiment not shown in the drawings, the dust removing pipelines 20 are multiple, one end of each of the multiple dust removing pipelines 20 is uniformly distributed along the circumferential direction of the outer wall 12 at intervals, one end of each of the multiple dust removing pipelines 20 is communicated with the hollow cavity 13, and the other ends of the multiple dust removing pipelines 20 are connected to a dust removing fan.
The plurality of dust removing pipelines 20 are arranged, so that the negative pressure suction force in the hollow cavity 13 can be basically consistent, and the condition of uneven suction force cannot be caused. The other ends of the dust removing pipelines 20 can be connected by a connecting valve, that is, the other ends of the dust removing pipelines 20 are connected to the connecting valve, and the outlet end of the connecting valve is connected to the dust removing fan.
The driving assembly 30 in the embodiment of the invention is supported on the ground, the lower surface of the driving assembly is fixedly connected with the ground, the upper end of the driving assembly is provided with a lifting arm, the lifting arm is connected with the lower end of the furnace wall cover 10, and the furnace wall cover 10 can move up and down along with the lifting arm. Specifically, the driving assembly 30 in the embodiment of the present invention is a hydraulic lifting device or an electric lifting device, and the structures of the hydraulic lifting device and the electric lifting device are the same as those in the prior art, and are not described herein again.
When the electric arc furnace 40 is to add scrap steel, the electric arc furnace 40 is powered off, the furnace cover and the electrode are lifted, then the furnace cover is unscrewed, and after the crane lifts the material basket fully loaded with the scrap steel to the position above the electric arc furnace 40, the specific operation steps are as follows:
the driving assembly 30 is started to lift the furnace wall cover 10, and the dust removing assembly is started when the furnace wall cover 10 is lifted to the set position.
The crane opens the basket and the scrap in the basket falls into the bath of the electric arc furnace 40 and generates a large amount of smoke. Because the dust removing component is opened, negative pressure is formed in the dust suction hole 14 and the hollow cavity 13 of the furnace wall cover 10, and the generated smoke dust sequentially passes through the dust suction hole 14, the hollow cavity 13 and the dust removing pipeline 20 on the furnace wall cover 10 and then enters the dust removing fan, so that the purpose of collecting and removing the smoke dust is achieved.
And after the scrap steel adding process is finished, closing the dust removal assembly. The drive assembly 30 is again activated to lower the furnace wall shell 10 back into position.
The furnace lid of the electric arc furnace 40 is rotated back and the electrode is lowered in preparation for electric smelting.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
in the process of opening the furnace cover and adding the scrap steel, the driving assembly 30 is opened, the furnace wall cover 10 rises, the smoke generated when the scrap steel collides with the molten pool can be effectively collected, the escape of the smoke is reduced, and the good electric furnace workshop environment is kept.
The furnace wall cover 10 is close to the smoke dust generation position, and the generated smoke dust can be wrapped by the cylindrical structure, so that the dust removal effect is far better than that of a roof cover when scrap steel is added.
The roof cover is positioned on the roof of a factory building, has large area and large dust removal air volume, so the equipment investment and the operation cost are high, and the furnace wall cover 10 has small equipment, small required air volume, small equipment investment and low operation cost.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical characteristics can be freely combined with each other, the technical characteristics can be freely combined with the technical scheme, and the technical scheme can be freely combined with the technical scheme.
Claims (9)
1. An electric arc furnace wall mantle capable of reducing smoke and dust, comprising:
the furnace wall cover (10) is annularly arranged outside the furnace wall of the electric arc furnace (40) and can move up and down relative to the furnace wall of the electric arc furnace (40) along the vertical direction, the furnace wall cover (10) is of a cylindrical structure with two open ends along the vertical direction, the furnace wall cover (10) is provided with an inner wall (11) and an outer wall (12), a hollow cavity (13) is formed between the inner wall (11) and the outer wall (12), the inner wall (11) is provided with a plurality of dust suction holes (14), and each dust suction hole (14) is communicated with the hollow cavity (13);
and the dust removal assembly is connected to the outer wall (12) and is communicated with the hollow cavity (13).
2. The electric arc furnace wall mantle capable of reducing smoke and dust according to claim 1, wherein the wall mantle (10) is a cylindrical structure open at both ends in a vertical direction, and a gap is provided between an inner wall (11) of the wall mantle (10) and the wall of the electric arc furnace (40).
3. The electric arc furnace wall cover capable of reducing smoke dust according to claim 2, wherein said gap is greater than or equal to 0.2m and said gap is less than or equal to 0.5m.
4. The electric arc furnace wall cover capable of reducing smoke dust according to claim 1, wherein the dust removing assembly comprises a dust removing pipeline (20) and a dust removing fan, one end of the dust removing pipeline (20) is fixedly connected with the outer wall (12) and is communicated with the hollow cavity (13), and the other end of the dust removing pipeline (20) is connected with the dust removing fan.
5. The electric arc furnace wall cover capable of reducing smoke dust according to claim 4, wherein the dust removing pipeline (20) is provided in a plurality of pieces, one end of each of the plurality of dust removing pipelines (20) is uniformly distributed along the circumferential direction of the outer wall (12) at intervals, one end of each of the plurality of dust removing pipelines (20) is communicated with the hollow cavity (13), and the other end of each of the plurality of dust removing pipelines (20) is connected to the dust removing fan.
6. The electric arc furnace wall mantle capable of reducing smoke and dust as set forth in claim 1, characterized in that the electric arc furnace wall mantle capable of reducing smoke and dust further comprises a driving assembly (30) fixedly arranged on the ground, the driving assembly (30) being connected to the wall mantle (10) and being capable of driving the wall mantle (10) to move in a vertical direction relative to the wall of the electric arc furnace (40).
7. The electric arc furnace wall mantle capable of reducing smoke and dust according to claim 6, wherein said driving assembly (30) is a hydraulic lifting device.
8. The electric arc furnace wall mantle capable of reducing smoke and dust according to claim 6, wherein said driving assembly (30) is an electric lifting device.
9. The electric arc furnace wall cover capable of reducing smoke dust according to claim 1, wherein the dust suction holes (14) are rectangular holes, and a plurality of the dust suction holes (14) are uniformly distributed at intervals along the circumferential direction of the 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 |
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| Publication Number | Publication Date |
|---|---|
| CN107906972A CN107906972A (en) | 2018-04-13 |
| CN107906972B true CN107906972B (en) | 2023-01-31 |
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| 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 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112833676B (en) * | 2020-12-24 | 2023-04-11 | 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 |
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 |
| 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 |
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| CN107906972A (en) | 2018-04-13 |
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