CN108680004B - Electric arc furnace - Google Patents
Electric arc furnace Download PDFInfo
- Publication number
- CN108680004B CN108680004B CN201810730383.6A CN201810730383A CN108680004B CN 108680004 B CN108680004 B CN 108680004B CN 201810730383 A CN201810730383 A CN 201810730383A CN 108680004 B CN108680004 B CN 108680004B
- Authority
- CN
- China
- Prior art keywords
- electrode
- exhaust hood
- fume exhaust
- furnace
- electric arc
- 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.)
- Active
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 34
- 239000003517 fume Substances 0.000 claims abstract description 63
- 239000000428 dust Substances 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 238000009628 steelmaking Methods 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 244000257782 Ipomoea triloba Species 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- 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
- F27B3/28—Arrangement of controlling, monitoring, alarm or the like devices
-
- 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 application discloses an electric arc furnace, which comprises a secondary fume exhaust hood (3), an electrode (4), an electrode small furnace cover (5), an electric arc furnace cover (8) and a hearth, wherein the secondary fume exhaust hood (3) is positioned outside the hearth, the electrode (4), the electrode small furnace cover (5) and the electric arc furnace cover (8) are sequentially sleeved from inside to outside, the secondary fume exhaust hood (3) is in a cylindrical structure, one end of the secondary fume exhaust hood (3) is provided with an inlet (31) and an electrode mounting opening (32), the other end of the secondary fume exhaust hood (3) is provided with an outlet (33), the inlet (31) of the secondary fume exhaust hood (3) is sleeved outside the small furnace cover (5), and the electrode (4) penetrates through the electrode mounting opening (32) of the secondary fume exhaust hood (3). The method realizes that the air outside the electric furnace is prevented from entering the furnace from the electrode hole on the furnace cover of the electric furnace and the flue gas in the furnace is prevented from diffusing outwards from the electrode hole in the steelmaking process of the electric furnace, so that the free lifting of the electrode in the smelting process is not influenced while the sealed electrode hole is achieved.
Description
Technical Field
The application relates to the field of smelting equipment, in particular to an electric arc furnace.
Background
At present, gaps exist between electrode holes and electrodes of an electric furnace cover in the electric furnace steelmaking process, so that the high-temperature electrodes can be conveniently and rapidly lifted freely in the complex melting and smelting process, and stable and efficient production of electric arcs is ensured. However, the existence of the electrode hole gap can cause the flue gas in the furnace to overflow to the outside of the furnace, or the air outside the furnace can enter the furnace. The overflow of flue gas in the furnace can lead to heat loss in the furnace and pollution to the smelting post environment. The outside air enters the furnace, and a large amount of nitrogen and other inert gases are brought in while 21% of oxygen is brought in, so that the oxidation and consumption of electrodes can be increased when the oxygen enters the furnace, the operation load of a dust removal system can be increased when other gases except oxygen enter the electric furnace, and the nitrogen is cracked under a high-temperature electric arc after entering the furnace, so that the smelting process can cause nitrogen increase in molten steel and reduce the purity of the molten steel.
Disclosure of Invention
In order to solve the problem that air outside the furnace can enter the furnace. The application provides an electric arc furnace which can prevent air or furnace gas from freely entering and exiting an electrode hole while rapidly and freely lifting in the high-temperature electrode smelting process of an electric furnace.
The application solves the technical problems that: the utility model provides an electric arc furnace, includes secondary fume extraction hood, electrode, the little bell of electrode, electric arc furnace bell and furnace, and the secondary fume extraction hood is located outside the furnace, electrode, the little bell of electrode and electric arc furnace bell are established from inside to outside cover in proper order, and the secondary fume extraction hood is tubular structure, and the one end of secondary fume extraction hood is equipped with entry and electrode mounting mouth, and the other end of secondary fume extraction hood is equipped with the export, and the entry cover of secondary fume extraction hood is located outside the little bell of electrode, and the electrode passes the electrode mounting mouth of secondary fume extraction hood.
The electric arc furnace also comprises a workshop secondary dust removal pipeline, and an outlet of the secondary fume exhaust hood can be correspondingly connected with an inlet of the workshop secondary dust removal pipeline.
The inlet of the workshop secondary dust removal pipeline is connected with a driving mechanism, and the driving mechanism can enable the inlet of the workshop secondary dust removal pipeline to be close to or far away from the outlet of the secondary fume exhaust hood.
An oxygen concentration measuring instrument is arranged in the secondary fume exhaust hood and is interlocked with the driving mechanism.
The secondary fume exhaust hood is in a horizontal state, flanges are arranged at the outlet of the secondary fume exhaust hood and the inlet of a workshop secondary dust removal pipeline, and the driving mechanism is a hydraulic cylinder.
The secondary fume exhaust hood is formed by connecting a movable pipe section and a fixed frame, an inlet of the secondary fume exhaust hood and an electrode mounting opening are both positioned between the movable pipe section and the fixed frame, and an outlet of the secondary fume exhaust hood is positioned at one end of the movable pipe section.
The movable pipe section and the fixed frame can be separated.
The movable pipe section and the fixed frame are detachably connected with the furnace cover of the electric arc furnace.
The movable pipe section and the fixed frame are both formed by welding water-cooling coils.
The electrode small furnace cover is internally provided with an electrode hole for electrode plug-in connection, and the electrode small furnace cover is in sealed plug-in connection with the electric arc furnace cover.
The beneficial effects of the application are as follows: the electric arc furnace can greatly reduce the air entering the furnace, thereby reducing the smoke quantity entering an electric furnace dust removal system and further reducing the load and energy consumption of electric furnace dust removal; the air entering the furnace is greatly reduced, and the oxidation of the high-temperature hot electrode in the furnace by oxygen in the air can be reduced, so that the consumption is reduced; the air entering the furnace is greatly reduced, and the secondary oxidation or combustion of the reducing gas produced in the furnace by the oxygen brought by the air can be reduced, so that the content of the reducing gas in the flue gas is improved, and the further recovery and the utilization of the reducing gas produced in the furnace are facilitated; has remarkable energy-saving and consumption-reducing effects.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
Fig. 1 is a front view of an arc furnace according to the present application.
FIG. 2 is an enlarged schematic view of the small lid portion of the electrode.
Fig. 3 is a top view of an arc furnace according to the application.
Fig. 4 is a top view of the secondary fume extractor hood.
Fig. 5 is a cross-sectional view taken along A-A in fig. 4.
1. A driving mechanism; 2. a workshop secondary dust removing pipeline; 3. a secondary fume exhaust hood; 4. an electrode; 5. a small electrode furnace cover; 6. a movable pipe section; 7. a fixed frame; 8. a furnace cover of the electric arc furnace;
31. an inlet; 32. an electrode mounting port; 33. and an outlet.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The utility model provides an electric arc furnace, this electric arc furnace includes secondary fume extraction hood 3, electrode 4, electrode little bell 5, electric arc furnace bell 8 and furnace, and secondary fume extraction hood 3 is located outside the furnace, and secondary fume extraction hood 3 is located the top of electric arc furnace bell 8, electrode 4, electrode little bell 5 and electric arc furnace bell 8 cover in proper order from inside to outside establish, secondary fume extraction hood 3 is tubular structure, one end of secondary fume extraction hood 3 is equipped with entry 31 and electrode mounting mouth 32, the other end of secondary fume extraction hood 3 is equipped with export 33, the entry 31 cover of secondary fume extraction hood 3 is located outside the electrode little bell 5, electrode 4 passes the electrode mounting mouth 32 of secondary fume extraction hood 3, as shown in fig. 1 to 3.
By arranging the secondary fume exhaust hood above the electric arc furnace cover 8, the air outside the electric furnace is prevented from entering the furnace from the electrode hole on the electric furnace cover and the fume in the furnace is prevented from diffusing outwards from the electrode hole in the electric furnace steel-making process, so that the free lifting of the electrode in the smelting process is not influenced while the electrode hole is sealed. The application is mainly suitable for sealing the electrode hole of the electric furnace under the normal atmospheric pressure.
In this embodiment, the electric arc furnace further comprises a secondary dust removal pipe 2 for the workshop, and the outlet 33 of the secondary fume exhaust hood 3 can be correspondingly connected with the inlet of the secondary dust removal pipe 2 for the workshop. The inlet of the workshop secondary dust removal pipeline 2 is connected with a driving mechanism 1, and the driving mechanism 1 can enable the inlet of the workshop secondary dust removal pipeline 2 to be close to or far away from the outlet 33 of the secondary fume exhaust hood 3.
When the air outside the furnace enters the inner cavity of the secondary fume exhaust hood 3 through the electrode mounting port 32 at the upper part of the secondary fume exhaust hood 3, the air is pumped to a secondary dust removal system of a workshop through the secondary dust removal pipeline 2 of the workshop for fume purification and treatment. After the smoke in the furnace is discharged from the electrode Kong Waiyi of the electrode small furnace cover 5 to the inner cavity of the secondary smoke exhaust hood 3, the smoke is pumped to a secondary dust removal system of a workshop by the secondary dust removal pipeline 2 of the workshop to be purified and treated, and the distance between the secondary smoke exhaust hood 3 and the secondary dust removal pipeline 2 of the workshop can be adjusted by the driving mechanism 1; the drive mechanism 1 may be a hydraulic cylinder.
In this embodiment, an oxygen concentration meter may be provided in the secondary fume hood 3, which is interlocked with the driving mechanism 1. The inlet of the workshop secondary dust removal pipeline 2 can be close to or far away from the secondary fume exhaust cover 3 to move under the driving of the driving mechanism 1 according to the oxygen concentration in the fume, if the oxygen concentration in the fume is detected to be lower than a set value, the inlet of the workshop secondary dust removal pipeline 2 can be far away from the secondary fume exhaust cover 3 to move, otherwise, the inlet of the workshop secondary dust removal pipeline 2 is close to the secondary fume exhaust cover 3 to move, and thus the actual sealing effect can be quantitatively ensured.
In this embodiment, the secondary fume exhaust hood 3 is in a horizontal state, and the outlet 33 of the secondary fume exhaust hood 3 and the inlet of the secondary dust removal pipe 2 of the workshop are both provided with flange structures so as to be connected. The inlet 31 of the secondary exhaust hood 3 is located at the lower part of the right end of the secondary exhaust hood 3, the electrode mounting opening 32 of the secondary exhaust hood 3 is located at the upper part of the right end of the secondary exhaust hood 3, and the outlet 33 of the secondary exhaust hood 3 is located at the left end of the secondary exhaust hood 3, as shown in fig. 1.
In this embodiment, the secondary fume-exhausting hood 3 is different from the primary fume-exhausting hood of the 4 th hole of the electric arc furnace cover 8, the secondary fume-exhausting hood 3 is of a split structure, the secondary fume-exhausting hood 3 is formed by connecting a movable pipe section 6 and a fixed frame 7, an inlet 31 and an electrode mounting opening 32 of the secondary fume-exhausting hood 3 are both positioned between the movable pipe section 6 and the fixed frame 7, the movable pipe section 6 is of a cylindrical structure, the movable pipe section 6 is in a horizontal state, and an outlet 33 of the secondary fume-exhausting hood 3 is positioned at one end of the movable pipe section 6, as shown in fig. 4 and 5.
In this embodiment, the movable pipe section 6 can be separated from the fixed frame 7. The movable pipe section 6 and the fixed frame 7 are detachably connected with an arc furnace cover 8. The movable tube sections 6 and the fixed frame 7 are each formed by welding a water-cooled coil, which is not actually shown in fig. 4 and 5 for ease of understanding, and it is also understood that the cross-sectional lines in fig. 4 and 5 represent water-cooled coils. The movable tube section 6 can be detached to be lifted by a crane to facilitate replacement of the electrode small furnace cover 5. The electric arc furnace cover 8 is a water-cooled cover, and the fixed frame 7 is connected with the electric arc furnace cover 8 by bolts, so that the electric arc furnace is convenient to detach and overhaul.
In the embodiment, three electrode holes for correspondingly inserting the three electrodes 4 are arranged in the electrode small furnace cover 5, the sizes of the electrode holes are as small as possible on the basis of meeting the lifting of the electrodes, so that the diffusion quantity of smoke in the furnace is reduced, and the electrode small furnace cover 5 is in sealed insertion connection with the electric arc furnace cover 8. The small electrode furnace cover 5 can prevent the fume in the furnace from overflowing and reduce the damage to the water-cooled furnace cover during the arc striking of the electrode.
The foregoing description of the embodiments of the application is not intended to limit the scope of the application, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the application shall fall within the scope of the patent. In addition, the technical features and the technical features, the technical features and the technical application can be freely combined for use.
Claims (2)
1. The electric arc furnace is characterized by comprising a secondary fume exhaust hood (3), an electrode (4), an electrode small furnace cover (5), an electric arc furnace cover (8) and a furnace hearth, wherein the secondary fume exhaust hood (3) is positioned outside the furnace hearth, the electrode (4), the electrode small furnace cover (5) and the electric arc furnace cover (8) are sequentially sleeved from inside to outside, the secondary fume exhaust hood (3) is in a cylindrical structure, one end of the secondary fume exhaust hood (3) is provided with an inlet (31) and an electrode mounting opening (32), the other end of the secondary fume exhaust hood (3) is provided with an outlet (33), the inlet (31) of the secondary fume exhaust hood (3) is sleeved outside the electrode small furnace cover (5), and the electrode (4) penetrates through the electrode mounting opening (32) of the secondary fume exhaust hood (3);
the electric arc furnace also comprises a workshop secondary dust removal pipeline (2), and an outlet (33) of the secondary fume exhaust hood (3) can be correspondingly connected with an inlet of the workshop secondary dust removal pipeline (2);
the inlet of the workshop secondary dust removal pipeline (2) is connected with a driving mechanism (1), and the driving mechanism (1) can enable the inlet of the workshop secondary dust removal pipeline (2) to be close to or far away from an outlet (33) of the secondary fume exhaust hood (3);
an oxygen concentration measuring instrument is arranged in the secondary exhaust hood (3), and the oxygen concentration measuring instrument is interlocked with the driving mechanism (1);
the secondary fume exhaust hood (3) is in a horizontal state, the outlet (33) of the secondary fume exhaust hood (3) and the inlet of the workshop secondary dust removal pipeline (2) are both provided with flanges, and the driving mechanism (1) is a hydraulic cylinder;
the secondary fume exhaust hood (3) is of a split type structure, the secondary fume exhaust hood (3) is formed by connecting a movable pipe section (6) and a fixed frame (7), an inlet (31) and an electrode mounting opening (32) of the secondary fume exhaust hood (3) are both positioned between the movable pipe section (6) and the fixed frame (7), the movable pipe section (6) is of a cylindrical structure, the movable pipe section (6) is in a horizontal state, and an outlet (33) of the secondary fume exhaust hood (3) is positioned at one end of the movable pipe section (6);
the movable pipe section (6) and the fixed frame (7) can be separated;
the movable pipe section (6) and the fixed frame (7) are detachably connected with an arc furnace cover (8);
the movable pipe section (6) and the fixed frame (7) are both formed by welding water-cooling coils.
2. The electric arc furnace as claimed in claim 1, characterized in that electrode holes for plugging the electrodes (4) are provided in the electrode small furnace cover (5), and the electrode small furnace cover (5) is plugged with the electric arc furnace cover (8) in a sealing manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730383.6A CN108680004B (en) | 2018-07-05 | 2018-07-05 | Electric arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730383.6A CN108680004B (en) | 2018-07-05 | 2018-07-05 | Electric arc furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108680004A CN108680004A (en) | 2018-10-19 |
| CN108680004B true CN108680004B (en) | 2023-12-08 |
Family
ID=63813334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810730383.6A Active CN108680004B (en) | 2018-07-05 | 2018-07-05 | Electric arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108680004B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3539692A (en) * | 1969-06-24 | 1970-11-10 | Fuller Co | Furnace hood |
| GB1511845A (en) * | 1974-07-18 | 1978-05-24 | Kent Ltd G | Gas measuring probes |
| US5241559A (en) * | 1992-03-30 | 1993-08-31 | Emc International, Inc. | Electric arc furnace roof |
| CN2514288Y (en) * | 2001-12-21 | 2002-10-02 | 烟台冶金水冷件厂 | Refining furnace cover for smelting steel |
| CN1846127A (en) * | 2003-09-01 | 2006-10-11 | 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 | Method for measuring gaseous species by derivation |
| CN201548055U (en) * | 2009-12-11 | 2010-08-11 | 攀枝花新钢钒股份有限公司 | Cooling furnace cover of LF furnace |
| KR101026515B1 (en) * | 2010-03-19 | 2011-04-01 | 주식회사 엠텍이엔지 | A roof apparatus for ladle furnace |
| CN201834939U (en) * | 2010-11-02 | 2011-05-18 | 河北钢铁股份有限公司承德分公司 | Improved LF (ladle furnace) dedusting electrode center cover |
| CN102401563A (en) * | 2011-12-01 | 2012-04-04 | 宝钢工程技术集团有限公司 | Water-cooling furnace cover of ladle refining furnace with high-temperature camera shooting function |
| CN202543249U (en) * | 2012-03-13 | 2012-11-21 | 河北钢铁股份有限公司承德分公司 | Improved double-layer furnace lid liner of ladle furnace (LF) ladle refining furnace |
| CN104457296A (en) * | 2014-11-25 | 2015-03-25 | 常州市苏三零工具有限公司 | Disengaging type in-core smoke extractor |
| CN205473867U (en) * | 2016-03-08 | 2016-08-17 | 中冶南方工程技术有限公司 | LF stove dust pelletizing system |
| CN106247801A (en) * | 2016-09-29 | 2016-12-21 | 宝钢工程技术集团有限公司 | A kind of water cooled cover of ladle refining furnace |
| CN207294830U (en) * | 2017-10-10 | 2018-05-01 | 舞阳钢铁有限责任公司 | A kind of bell of LF stoves and the combination unit of petticoat pipe |
| CN208475954U (en) * | 2018-07-05 | 2019-02-05 | 中冶京诚工程技术有限公司 | A kind of electric arc furnaces |
-
2018
- 2018-07-05 CN CN201810730383.6A patent/CN108680004B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3539692A (en) * | 1969-06-24 | 1970-11-10 | Fuller Co | Furnace hood |
| GB1511845A (en) * | 1974-07-18 | 1978-05-24 | Kent Ltd G | Gas measuring probes |
| US5241559A (en) * | 1992-03-30 | 1993-08-31 | Emc International, Inc. | Electric arc furnace roof |
| CN2514288Y (en) * | 2001-12-21 | 2002-10-02 | 烟台冶金水冷件厂 | Refining furnace cover for smelting steel |
| CN1846127A (en) * | 2003-09-01 | 2006-10-11 | 液体空气乔治洛德方法利用和研究的具有监督和管理委员会的有限公司 | Method for measuring gaseous species by derivation |
| CN201548055U (en) * | 2009-12-11 | 2010-08-11 | 攀枝花新钢钒股份有限公司 | Cooling furnace cover of LF furnace |
| KR101026515B1 (en) * | 2010-03-19 | 2011-04-01 | 주식회사 엠텍이엔지 | A roof apparatus for ladle furnace |
| CN201834939U (en) * | 2010-11-02 | 2011-05-18 | 河北钢铁股份有限公司承德分公司 | Improved LF (ladle furnace) dedusting electrode center cover |
| CN102401563A (en) * | 2011-12-01 | 2012-04-04 | 宝钢工程技术集团有限公司 | Water-cooling furnace cover of ladle refining furnace with high-temperature camera shooting function |
| CN202543249U (en) * | 2012-03-13 | 2012-11-21 | 河北钢铁股份有限公司承德分公司 | Improved double-layer furnace lid liner of ladle furnace (LF) ladle refining furnace |
| CN104457296A (en) * | 2014-11-25 | 2015-03-25 | 常州市苏三零工具有限公司 | Disengaging type in-core smoke extractor |
| CN205473867U (en) * | 2016-03-08 | 2016-08-17 | 中冶南方工程技术有限公司 | LF stove dust pelletizing system |
| CN106247801A (en) * | 2016-09-29 | 2016-12-21 | 宝钢工程技术集团有限公司 | A kind of water cooled cover of ladle refining furnace |
| CN207294830U (en) * | 2017-10-10 | 2018-05-01 | 舞阳钢铁有限责任公司 | A kind of bell of LF stoves and the combination unit of petticoat pipe |
| CN208475954U (en) * | 2018-07-05 | 2019-02-05 | 中冶京诚工程技术有限公司 | A kind of electric arc furnaces |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108680004A (en) | 2018-10-19 |
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