CN108844371A - Closed furnace door of electric arc furnace - Google Patents
Closed furnace door of electric arc furnace Download PDFInfo
- Publication number
- CN108844371A CN108844371A CN201811060349.9A CN201811060349A CN108844371A CN 108844371 A CN108844371 A CN 108844371A CN 201811060349 A CN201811060349 A CN 201811060349A CN 108844371 A CN108844371 A CN 108844371A
- Authority
- CN
- China
- Prior art keywords
- electric arc
- resistance
- furnace
- plume
- fire door
- 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.)
- Pending
Links
- 238000010891 electric arc Methods 0.000 title claims abstract description 68
- 239000002893 slag Substances 0.000 claims abstract description 41
- 229910001018 Cast iron Inorganic materials 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000009845 electric arc furnace steelmaking Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000003749 cleanliness Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000003447 ipsilateral effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
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
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention provides a closed furnace door of an electric arc furnace, which relates to the field of electric arc furnace steelmaking and comprises a furnace door body arranged outside a furnace opening of the electric arc furnace, wherein the top end and two side edges of the furnace door body are hermetically matched with a furnace shell of the electric arc furnace, the closed furnace door of the electric arc furnace also comprises a first heat-resisting part and a second heat-resisting part which can resist the temperature of slag in the electric arc furnace, the first heat-resisting part is fixedly arranged on the inner side wall of the furnace door body and protrudes out of the furnace door body downwards, the second heat-resisting part is arranged on the lower edge of the furnace opening and is fixedly connected with the outer wall of the furnace shell, and a slag sliding gap can be formed between the first heat-resisting part and the. The invention provides a closed furnace door of an electric arc furnace, which can meet the process requirements of smelting while slag sliding of the electric arc furnace and can prevent air outside the furnace from entering the furnace.
Description
Technical field
The present invention relates to electric-arc furnace steelmaking field, in particular to the closed fire door of a kind of electric arc furnaces.
Background technique
Electric arc furnaces door upper part is made of water cooling coil pipe at present, and such fire door can bear the high temperature from molten steel and clinker
Radiation, but cannot directly be contacted with high temperature furnace slag, otherwise have the danger burnt and exploded.Therefore, it is refined in existing electric furnace
During steel, in order to meet the process requirements for slipping slag when smelting, fire door must open wide and must keep certain with high temperature furnace slag
Gap.
But the gap of fire door and high temperature furnace slag can allow the air outside furnace that can enter in furnace.The outer air of furnace enters in furnace, in band
A large amount of nitrogen and other inert gases are also brought while entering 21% oxygen into.Oxygen enters in furnace the oxygen that will increase electrode
Change and consumption, other gases in addition to oxygen enter in electric furnace the operating load that then will increase dust pelletizing system, nitrogen enters
It is cracked under high-temperature electric arc again after in furnace, will cause molten steel nitrogen pick-up, reduction Molten Steel Cleanliness.
But if fire door and furnace shell are fully sealed, then fire door just loses the function of slipping slag, is not also able to satisfy electric arc
The needs that furnace is smelted.
Summary of the invention
The purpose of the present invention is to provide a kind of closed fire doors of electric arc furnaces, have both been able to satisfy electric arc furnaces and have slipped slag when smelting
Process requirements, and can prevent the outer air of furnace from entering in furnace simultaneously.
In order to achieve the above objectives, the present invention proposes a kind of closed fire door of electric arc furnaces, the furnace including being mounted on electric arc furnaces
Oven door body outside mouthful, wherein the top and two sides of the oven door body, which are sealed with the furnace shell of the electric arc furnaces, to be cooperated, institute
The closed fire door for stating electric arc furnaces further includes being resistant to the first refractory sections of slag temperature in the electric arc furnaces and second heat-resisting
Portion, first refractory sections are installed on the inner sidewall of the oven door body and downwardly projecting in the oven door body, and described
Two refractory sections are located at the lower edge of the fire door and are fixedly connected with the outer wall of the furnace shell, first refractory sections and described second
It is capable of forming between refractory sections and slips slag gap.
The closed fire door of electric arc furnaces as described above, wherein first refractory sections include more than two first resistance to
Plume, the first resistance to plume are horizontally disposed column and are installed on the inner sidewall of the oven door body, described first
The both ends of resistance to plume are flushed with the two sides of the oven door body, more than two first resistance to plumes along the vertical direction sequence
Close-packed arrays, the described first resistance to plume positioned at bottom are downwardly projecting in the oven door body.
The closed fire door of electric arc furnaces as described above, wherein one end of second refractory sections is arranged in the fire door
Lower edge, the other end of second refractory sections tilts down setting.
The closed fire door of electric arc furnaces as described above, wherein second refractory sections include more than two second resistance to
Plume, the second resistance to plume are horizontally disposed column, and more than two second resistance to plumes are along second refractory sections
Inclined direction sequence close-packed arrays.
The closed fire door of electric arc furnaces as described above, wherein more than two second resistance to plumes are successively fixed to be connected
It connects, the described second resistance to plume positioned at the top is fixedly connected on the outer wall of the furnace shell.
The closed fire door of electric arc furnaces as described above, wherein the first resistance to plume and the second resistance to plume are
The resistance to plume of graphite.
The closed fire door of electric arc furnaces as described above, wherein the first resistance to plume and the second resistance to plume are
The resistance to plume of aluminum.
The closed fire door of electric arc furnaces as described above, wherein the cast iron plate that the oven door body is vertically arranged, it is described
First refractory sections are fixedly connected on the inner sidewall of the cast iron plate.
The closed fire door of electric arc furnaces as described above, wherein the closed fire door of the electric arc furnaces further includes fire door liter
Falling unit, the furnace door lifting device be connected with the outer wall of the oven door body and drive the oven door body rise and under
Drop.
The closed fire door of electric arc furnaces as described above, wherein the closed fire door of the electric arc furnaces further includes that fire door is clear
Device is managed, the fire door cleaning plant includes appendix and nozzle, and one end of the appendix is connected with gas source, the gas transmission
The other end ecto-entad of pipe runs through the oven door body, and the nozzle is mounted on the other end of the appendix, the nozzle
Gas outlet towards first refractory sections.
Compared with prior art, the invention has the characteristics that and advantage:
The closed fire door of electric arc furnaces proposed by the present invention is arranged in the first refractory sections in oven door body and is arranged in furnace
It is formed between the second refractory sections at mouth lower edge and slips slag gap, generate high temperature furnace during electric arc furnaces is powered and smelts in this way
Slag can be flowed out from slipping in slag gap, meanwhile, the high temperature furnace slag continuously outflowed will slip the sealing of slag gap filling again, prevent outer
The air on boundary is entered inside electric arc furnaces by slipping slag gap, realizes oven door sealing;First refractory sections and the second refractory sections can
It prevents high temperature furnace slag from contacting with the direct of oven door body, oven door body is avoided to be burnt or exploded.
Detailed description of the invention
Attached drawing described here is only used for task of explanation, limits the scope of the present disclosure without in any way.Separately
Outside, shape and proportional sizes of each component in figure etc. are only schematical, are used to help the understanding of the present invention, are not tool
Body limits the shape and proportional sizes of each component of the present invention.Those skilled in the art under the teachings of the present invention, can basis
Concrete condition selects various possible shapes and proportional sizes to implement the present invention.
Fig. 1 is the structural schematic diagram of the closed fire door of electric arc furnaces proposed by the present invention;
Fig. 2 is the use schematic diagram of the closed fire door of electric arc furnaces proposed by the present invention.
Description of symbols:
100, fire door;110, oven door body;
120, the first refractory sections;121, the first resistance to plume;
130, the second refractory sections;131, the second resistance to plume;
140, lifting device;150, fire door cleaning plant;
160, slag gap is slipped;170, water cooling plant;
400, high temperature furnace slag;200, fire door;
300, furnace shell.
Specific embodiment
With reference to the drawings and the description of the specific embodiments of the present invention, details of the invention can clearly be understood.But
It is the specific embodiment of invention described herein, purpose for explaining only the invention, and cannot understand in any way
At being limitation of the present invention.Under the teachings of the present invention, technical staff is contemplated that based on any possible change of the invention
Shape, these are regarded as belonging to the scope of the present invention.
As shown in Figure 1 and Figure 2, the present invention proposes a kind of closed fire door 100 of electric arc furnaces, is mounted on the fire door of electric arc furnaces
Outside 200, the closed fire door 100 of the electric arc furnaces includes at least oven door body 110, the first refractory sections 120 and the second refractory sections
130, the first refractory sections 120 and the second refractory sections 130 are resistant to the temperature of high temperature furnace slag 400 in electric arc furnaces, oven door body
110 top and two sides, which are sealed with the furnace shell of electric arc furnaces 300, to be cooperated, and the first refractory sections 120 are installed in oven door body 110
On inner sidewall and downwardly projecting in oven door body 110, the second refractory sections 130 are located at the lower edge of fire door 200 and outer with furnace shell 300
Wall is fixedly connected, and is capable of forming between the first refractory sections 120 and the second refractory sections 130 and is slipped slag gap 160.
The first refractory sections 120 in oven door body 110 are arranged in the closed fire door 100 of electric arc furnaces proposed by the present invention
It is formed between the second refractory sections 130 being arranged at 200 lower edge of fire door and slips slag gap 160, in this way in electric arc furnaces energization smelting
High temperature furnace slag 400 is generated during refining to flow out from slipping in slag gap 160, meanwhile, the high temperature furnace slag 400 continuously outflowed
The filling sealing of slag gap 160 will be slipped again, be prevented extraneous air to enter inside electric arc furnaces by slipping slag gap 160, be realized
Oven door sealing;First refractory sections 120 and the second refractory sections 130 can prevent high temperature furnace slag from contacting with the direct of oven door body 110,
Oven door body 110 is avoided to be burnt or exploded.
The closed fire door 100 of electric arc furnaces proposed by the present invention, which had both been able to satisfy electric arc furnaces and slips the technique of slag when smelting, to be wanted
It asks, while being able to achieve oven door sealing again, prevent the outer air of furnace from being entered in furnace by fire door 200, to reduce electric arc furnaces generation
Exhaust gas volumn reduces the load and energy consumption of electric stove dust;It also can be reduced the red-hot electrode of furnace high-temperature by the oxygen in air simultaneously
Oxidation, to reduce consumption.Also, since the air entered in furnace is greatly decreased, decrease the reproducibility gas produced in furnace
The oxygen of body brought by air carries out secondary oxidation or burning, to improve the content of reducing gas in flue gas (CO), favorably
In the further recycling and utilization of the reducibility gas generated in furnace;In addition, since the air entered in furnace is greatly decreased, accordingly
Reduce nitrogen to enter in furnace, reduces the content of nitrogen in molten steel, be obviously improved Molten Steel Cleanliness.
In the present invention, the first refractory sections 120 and the second refractory sections 130 are made of heat-resisting material, heat-resisting material
Refer to the material for being resistant to 1650 DEG C or more high temperature.
In an optional example of the invention, the first refractory sections 120 include the more than two first resistance to plumes 121, the
One resistance to plume 121 is horizontally disposed column and is installed on the inner sidewall of oven door body 110, the two of the first resistance to plume 121
End is flushed with the two sides of oven door body 110, more than two first resistance to plumes 121 sequence close-packed arrays along the vertical direction, position
It is downwardly projecting in oven door body 110 in the first resistance to plume 121 of bottom.More than two compact arranged first resistance to plumes 121
The first refractory sections 120 are constituted, prevent oven door body 110 from directly contacting with high temperature furnace slag 400.
In an optional example of the invention, the both ends of the first resistance to plume 121 are respectively equipped with fixation kit, fixation kit
Including support arm and mounting pin, one end of mounting pin is fixed on the end face of the first resistance to plume 121, and the other end of mounting pin is along
The axis evagination of one resistance to plume 121, support arm is horizontally disposed, and one end of support arm is fixed in oven door body, and mounting pin is set up
On the upper surface of support arm, and the other end of support arm is equipped with the occlusion part upwarped, to prevent falling off for mounting pin.It blocks
Portion is set as at a distance from oven door body, after mounting pin rides upon the upper surface of support arm, the side wall top of the first resistance to plume 121
It is against on the inner sidewall of oven door body, the side wall contact of mounting pin is on occlusion part.
In an optional example of the invention, one end of the second refractory sections 130 is arranged in the lower edge of fire door 200, and second
The other end of refractory sections 130 tilts down setting.In this way, high temperature furnace slag 400 is after slipping the outflow of slag gap 160, it is just resistance to along second
The upper surface in hot portion 130 flows down, and is discharged in time.
In an optional example of the invention, the second refractory sections 130 include the more than two second resistance to plumes 131, the
Two resistance to plumes 131 are horizontally disposed column, and more than two second resistance to plumes 131 are along the inclination side of the second refractory sections 130
To sequence close-packed arrays.
In an optional example of the invention, multiple second resistance to plumes 131 are fixedly connected sequentially, positioned at the of the top
Two resistance to plumes 131 are fixedly connected on the outer wall of furnace shell 300.
In an optional example of the invention, it can also be provided in the lower section of the more than two second resistance to plumes 131
Mounting plate, mounting plate are equipped with more than two installation steps, and the second resistance to plume 131 is installed on its corresponding installation step.
In an optional example of the invention, the length of the second resistance to plume 131 is greater than or equal to the length of the first resistance to plume
Degree, the i.e. width of the second refractory sections 130 are greater than the width of the first refractory sections 120, to prevent from the high temperature for slipping the outflow of slag gap 160
Clinker does not overflow, and guarantees to smelt production safety.
In an optional example of the invention, the second refractory sections 130 are installed on the outer wall of lower furnace shell of electric arc furnaces.
In an optional example of the invention, the first resistance to plume 121 and the second resistance to plume 131 are the resistance to plume of graphite.
The resistance to plume of graphite can use the graphite electrode used when electric arc furnace smelting, be resistant to 1700 DEG C or more of high temperature.
In an optional example of the invention, the first resistance to plume 121 and the second resistance to plume 131 are the resistance to plume of aluminum.
The resistance to plume of aluminum is made of High-Alumina heat proof material, is resistant to high temperature.
In an optional example of the invention, the first resistance to plume 121 and the second resistance to plume 131 are cylindrical body, so as to
In deslagging.Certain first resistance to plume 121 and the second resistance to plume 131 or prism.
In an optional example of the invention, the cast iron plate that oven door body 110 is vertically arranged, the first refractory sections 120
It is fixedly connected on the inner sidewall of cast iron plate.In this way, oven door body 110 has enough mechanical strengths, convenient for it is first heat-resisting
The installation in portion 120 is also convenient for being used cooperatively with other equipment of electric arc furnaces.
In an optional example of the invention, the closed fire door 100 of electric arc furnaces further includes furnace door lifting device 140,
Furnace door lifting device 140 is connected with the outer wall of oven door body 110 and drives 110 raising and lowering of oven door body.In this way, passing through
The height of the adjustable oven door body 110 of furnace door lifting device 140 and the first refractory sections 120, and then adjust and slip slag gap 160
Width (i.e. the aperture of fire door), slag gap 160 will be slipped while guaranteeing that high temperature furnace slag 400 can be flowed out from slag gap 160 is slipped
Sealing.
In an optional example of the invention, furnace door lifting device can use existing furnace door lifting device.
In an optional example of the invention, the closed fire door 100 of electric arc furnaces further includes fire door cleaning plant 150,
Fire door cleaning plant 150 includes appendix and nozzle, and one end of appendix is connected with gas source, and the other end of appendix is by extroversion
Interior to run through oven door body 110, nozzle is mounted on the other end of appendix, gas outlet the first refractory sections 120 of direction of nozzle.Work as furnace
Door dry slag when needing to clear up the first refractory sections 120, is sprayed by appendix and nozzle to the surface of the first refractory sections 120
Oxygen blast gas.
In an optional example of the invention, the top of oven door body 110 is equipped with water cooling plant 170.Water cooling plant packet
Installation liner plate and water cooling coil pipe are included, installation liner plate is L-shaped to have vertical part and the horizontal part, and one end of horizontal part and oven door body connect
It connects, the other end of horizontal part is connect with vertical portion, and the furnace shell outer wall above vertical portion and fire door, which seals, to be cooperated, the setting of water cooling coil pipe
In the upper surface of horizontal part.
In an optional example of the invention, it is separately installed with baffle in the two sides of fire door, baffle is installed in furnace shell
It is vertically arranged on outer wall and with oven door body 110, the two sides of oven door body 110 cooperate with ipsilateral guard seal respectively, peace
The two sides of the horizontal part of fitted lining plate also cooperate with ipsilateral guard seal respectively.
For explaining in detail for the respective embodiments described above, purpose, which is only that, explains the present invention, in order to be able to
More fully understand the present invention, still, these descriptions cannot with any explanation at being limitation of the present invention, in particular,
Each feature described in different embodiments can also mutual any combination, so that other embodiments are formed, in addition to having
Opposite description is specified, these features should be understood to can be applied in any one embodiment, and be not limited merely to
Described embodiment.
Claims (10)
1. the closed fire door of a kind of electric arc furnaces, including the oven door body being mounted on outside the fire door of electric arc furnaces, which is characterized in that institute
The top and two sides for stating oven door body, which are sealed with the furnace shell of the electric arc furnaces, to be cooperated, and the closed fire door of the electric arc furnaces is also
The first refractory sections and the second refractory sections including being resistant to slag temperature in the electric arc furnaces, first refractory sections are installed in
On the inner sidewall of the oven door body and downwardly projecting in the oven door body, second refractory sections are located under the fire door
Edge is simultaneously fixedly connected with the outer wall of the furnace shell, is capable of forming between slipping slag between first refractory sections and second refractory sections
Gap.
2. the closed fire door of electric arc furnaces as described in claim 1, which is characterized in that first refractory sections include two with
On the first resistance to plume, the first resistance to plume is horizontally disposed column and is installed in the inner sidewall of the oven door body
On, the both ends of the first resistance to plume are flushed with the two sides of the oven door body, more than two first resistance to plume edges
Vertical direction sequence close-packed arrays, the described first resistance to plume positioned at bottom are downwardly projecting in the oven door body.
3. the closed fire door of electric arc furnaces as claimed in claim 2, which is characterized in that one end of second refractory sections is arranged
Setting is tilted down in the other end of the lower edge of the fire door, second refractory sections.
4. the closed fire door of electric arc furnaces as claimed in claim 3, which is characterized in that second refractory sections include two with
On the second resistance to plume, the second resistance to plume is horizontally disposed column, and more than two second resistance to plumes are along described the
The inclined direction sequence close-packed arrays of two refractory sections.
5. the closed fire door of electric arc furnaces as claimed in claim 4, which is characterized in that more than two second resistance to plumes
It is fixedly connected sequentially, the described second resistance to plume positioned at the top is fixedly connected on the outer wall of the furnace shell.
6. the closed fire door of electric arc furnaces as claimed in claim 4, which is characterized in that the first resistance to plume and described second
Resistance to plume is the resistance to plume of graphite.
7. the closed fire door of electric arc furnaces as claimed in claim 4, which is characterized in that the first resistance to plume and described second
Resistance to plume is the resistance to plume of aluminum.
8. the closed fire door of electric arc furnaces as described in claim 1, which is characterized in that the oven door body was vertically arranged
Cast iron plate, first refractory sections are fixedly connected on the inner sidewall of the cast iron plate.
9. the closed fire door of electric arc furnaces as described in claim 1, which is characterized in that the closed fire door of the electric arc furnaces is also
Including furnace door lifting device, the furnace door lifting device is connected with the outer wall of the oven door body and drives the oven door body
Raising and lowering.
10. the closed fire door of electric arc furnaces as described in claim 1, which is characterized in that the closed fire door of the electric arc furnaces
It further include fire door cleaning plant, the fire door cleaning plant includes appendix and nozzle, one end and the gas source phase of the appendix
The other end ecto-entad of connection, the appendix runs through the oven door body, and the nozzle is mounted on the another of the appendix
One end, the gas outlet of the nozzle is towards first refractory sections.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811060349.9A CN108844371A (en) | 2018-09-12 | 2018-09-12 | Closed furnace door of electric arc furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201811060349.9A CN108844371A (en) | 2018-09-12 | 2018-09-12 | Closed furnace door of electric arc furnace |
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Publication Number | Publication Date |
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CN108844371A true CN108844371A (en) | 2018-11-20 |
Family
ID=64188189
Family Applications (1)
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CN201811060349.9A Pending CN108844371A (en) | 2018-09-12 | 2018-09-12 | Closed furnace door of electric arc furnace |
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Cited By (1)
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CN111750673A (en) * | 2019-03-29 | 2020-10-09 | 达涅利机械设备股份公司 | Slag door for melting furnace |
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CN111750673A (en) * | 2019-03-29 | 2020-10-09 | 达涅利机械设备股份公司 | Slag door for melting furnace |
CN111750673B (en) * | 2019-03-29 | 2022-07-22 | 达涅利机械设备股份公司 | Slag door for melting furnace |
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