CN220818542U - Integrated electric furnace for melting and steelmaking - Google Patents
Integrated electric furnace for melting and steelmaking Download PDFInfo
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- CN220818542U CN220818542U CN202322598227.8U CN202322598227U CN220818542U CN 220818542 U CN220818542 U CN 220818542U CN 202322598227 U CN202322598227 U CN 202322598227U CN 220818542 U CN220818542 U CN 220818542U
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- 238000009628 steelmaking Methods 0.000 title claims abstract description 89
- 238000002844 melting Methods 0.000 title claims abstract description 29
- 230000008018 melting Effects 0.000 title claims abstract description 29
- 238000003723 Smelting Methods 0.000 claims abstract description 157
- 239000002184 metal Substances 0.000 claims abstract description 44
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002893 slag Substances 0.000 claims abstract description 23
- 238000005192 partition Methods 0.000 claims abstract description 21
- 239000000428 dust Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 9
- 230000004927 fusion Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 45
- 229910052742 iron Inorganic materials 0.000 description 19
- 238000000034 method Methods 0.000 description 15
- 230000008569 process Effects 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005261 decarburization Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000009842 primary steelmaking Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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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 utility model provides a melting and steelmaking integrated electric furnace, which comprises a lower furnace body, an upper furnace body, a furnace cover and an electrode assembly, wherein the upper furnace body is provided with a furnace cover; wherein, a partition wall is arranged in the lower furnace body, and the partition wall divides the lower furnace body into at least two smelting areas which are arranged side by side; the bottom of the partition wall is provided with a connecting channel for circulating molten metal in the adjacent smelting area, and the partition wall is used for separating slag liquid and flue gas in the adjacent smelting area; at least one smelting area is used for smelting, at least one smelting area is used for steelmaking, and each smelting area is provided with a corresponding upper furnace body, a furnace cover and an electrode assembly; each smelting area is provided with a feeding device and a dust removal port. The utility model separates and forms smelting areas for melting and steelmaking on the lower furnace body, reduces the transfer of molten metal, shortens the smelting flow, reduces the heat dissipation and environmental pollution in the production process, improves the production efficiency, reduces the energy consumption and saves the energy.
Description
Technical Field
The utility model belongs to the technical field of metallurgy, and particularly relates to a melting and steelmaking integrated electric furnace.
Background
The development of the steel industry in a low-carbon background faces huge carbon reduction pressure, and in addition, the limitation of resource conditions also presents higher challenges for energy conservation and emission reduction of steel. A typical carbon reduction technology path for avoiding a blast furnace in the steel industry at present is a hydrogen-based (or gas-based) shaft furnace-direct iron-electric furnace steelmaking process. However, the technology is limited by the global fine iron ore resource amount and the iron ore grade, and the direct iron produced by the shaft furnace generally has the ferrite content of about 80 percent and contains a large amount of gangue (main components of SiO2 and AL2O 3). The method brings great challenges to the subsequent electric furnace steelmaking process, slag quantity is increased, power consumption is increased sharply, theoretical power consumption of the reduced iron smelting reaches 700kwh/t or higher, and how to smelt low-quality direct-return iron with low cost, green and low carbon becomes a great challenge.
In a typical method for smelting low-quality direct-return iron, direct-return iron slag is melted and separated by a melting electric furnace, molten iron or metal liquid with high specific gravity is deposited on the bottom of the furnace, slag liquid with lower density floats on the upper layer of the molten iron, slag liquid is discharged through a high-level slag outlet, molten iron is discharged through a low-level iron outlet, and the obtained molten iron is transferred to an electric arc furnace or other equipment to be smelted into molten steel.
However, the transfer of molten iron after melting can lead to the prolongation of the whole production process flow, the increase of heat dissipation in the production process, the increase of environmental pollution, lower production efficiency, the increase of labor cost and the like.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide an integrated electric furnace for melting and steelmaking, which reduces the process of molten metal transportation, reduces heat dissipation in the process, shortens the process flow, and improves the production efficiency.
To achieve the above object and other related objects, the present invention provides the following technical solutions:
an integrated electric furnace for melting and steelmaking comprises a lower furnace body, an upper furnace body, a furnace cover and an electrode assembly;
A partition wall is arranged in the lower furnace body, the partition wall divides the lower furnace body into at least two smelting areas which are arranged side by side, a connecting channel for circulating molten metal in each smelting area is arranged at the bottom of the partition wall, and the partition wall is used for separating slag liquid and flue gas in each smelting area; wherein, at least one smelting area is used for smelting in a smelting way, and at least one smelting area is used for steelmaking;
Each smelting area is correspondingly provided with an upper furnace body, a furnace cover and an electrode assembly, and the electrode assembly penetrates through the furnace cover and then stretches into the smelting area;
each smelting area is provided with a feeding device and a dust removal port.
Optionally, the lower furnace body is long, the smelting area positioned in the first smelting position is a smelting area, and the rest smelting areas are steelmaking areas.
Optionally, the feeding device and the dust removing opening are arranged on the furnace cover or the furnace body.
Optionally, slag outlets are formed in the lower furnace body of each smelting zone, and at least the smelting zone of the last stage is provided with a molten metal outlet.
Optionally, the smelting areas are two, including the smelting area and the steelmaking area of intercommunication, be provided with the side wall rifle on the last furnace body of steelmaking area or be provided with the top-blown rifle on the bell of steelmaking area, the steelmaking area is provided with the molten metal export.
Optionally, the smelting areas are three, including the smelting area and two steelmaking areas that communicate in proper order, be provided with the side wall rifle on the last furnace body of steelmaking area or be provided with the top-blown rifle on the bell of steelmaking area, be provided with the molten metal export in the steelmaking area that is kept away from the smelting area at least.
Optionally, the two smelting areas comprise a smelting area and a steelmaking area which are communicated, wherein the steelmaking area comprises a first smelting area and a second smelting area which are arranged side by side, and the first smelting area is communicated with molten metal and slag in the second smelting area and has the same atmosphere; the first smelting area is communicated with the smelting area through a connecting channel, and the first smelting area and the second smelting area are both provided with an electrode assembly, a feeding device and a dust removing opening.
Alternatively, the electrode assembly may be an ac electrode or a dc electrode, and the electrode assembly may include one or more electrodes.
Optionally, the melting zone is further provided with a preheating device for heating the material.
Optionally, the upper furnace body has a longitudinally extending stacking space, the feeding device is arranged at the top of the upper furnace body, the dust removing opening is arranged at the top or the side surface of the upper furnace body, the lower end of the upper furnace body is communicated with the smelting area, and a plurality of air openings or burners are circumferentially arranged at the lower part of the upper furnace body.
As described above, the invention has the beneficial effects that: the smelting areas for melting and steelmaking are formed on the lower furnace body separately, molten metal after melting can flow into the next smelting area through the connecting channel for steelmaking, so that the transfer of the molten metal is reduced, the smelting flow is shortened, the heat dissipation and the environmental pollution in the production process are reduced, the production efficiency is improved, the energy consumption is reduced, and the energy is saved; and each smelting area is independently provided with an electrode assembly, so that energy can be supplemented for heat dissipation in the smelting process of the furnace, and molten metal can be heated to maintain the temperature or raise the temperature to reach the required temperature.
Drawings
FIG. 1 is a schematic diagram of a fusion and steelmaking integrated furnace in one embodiment;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic view of a fusion and steelmaking integrated furnace in yet another embodiment;
FIG. 4 is a top view of FIG. 3 (upper furnace, furnace lid, electrode assembly omitted);
FIG. 5 is a schematic view of a melting and steelmaking integrated furnace in yet another embodiment;
FIG. 6 is a top view of FIG. 5 (upper furnace, furnace lid, electrode assembly omitted);
FIG. 7 is a schematic view of a fusion and steelmaking integrated furnace with a preheating device;
fig. 8 is a schematic top view of fig. 7.
Part number description:
The device comprises a 1-electrode assembly, a 2-feeding device, a 3-dust removal port, a 4-top blowing gun, a 5-upper furnace body, a 6-slag outlet, a 7-lower furnace body, an 8-molten metal outlet, a 9-side wall gun, a 10-bottom discharge port, an 11-partition wall, a 12-molten metal, a 13-slag liquid, a 14-material, a 15-air port, a 16-spray gun, a 17-connecting channel, an 18-furnace cover, a 100-smelting zone, a 200-steelmaking zone, a 201-first smelting zone and a 202-second smelting zone.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Examples
As shown in fig. 1 to 8, the integrated electric melting and steelmaking furnace exemplified in this example includes a lower furnace body 7, an upper furnace body 5, a furnace cover 18, an electrode assembly 1, and the like; wherein, a partition wall 11 is arranged in the lower furnace body 7, and the partition wall 11 divides the lower furnace body 7 into at least two smelting areas which are arranged side by side; the smelting areas can be used for smelting, steelmaking and the like, wherein the bottom of the partition wall 11 is provided with a connecting channel 17 for the circulation of the molten metal 12 in the adjacent smelting areas, so that the molten metal 12 in the adjacent smelting areas can circulate mutually or the molten metal 12 in the previous smelting area flows to the next smelting area through the connecting channel 17; the partition wall 11 is used for separating slag liquid 13 and flue gas of adjacent smelting areas, namely, only metal liquid 12 can circulate between the adjacent smelting areas; wherein, in all smelting areas, at least one smelting area is used for smelting, at least one smelting area is used for steelmaking, and the smelting area of smelting is adjacent to the smelting area of steelmaking and is communicated with the smelting area of steelmaking through a connecting channel 17; usually, the first-stage smelting area is used for smelting in a smelting way, the rest-stage smelting areas are used for steelmaking, and all stages are communicated in sequence.
Each smelting area is provided with a corresponding upper furnace body 5, a furnace cover 18 and an electrode assembly 1, and the electrode assembly 1 passes through the furnace cover 18 and then stretches into the smelting area;
Each smelting zone is provided with a charging device 2 and a dust removal port 3, so that corresponding materials 14 are added into the smelting zone through the charging device 2, and smelting flue gas is discharged through the dust removal port 3 to be connected with the dust removal device.
According to the structure, the smelting areas for melting and steelmaking are formed on the lower furnace body 7 in a separated mode, molten metal 12 after melting can flow into the next smelting area through the connecting channel 17 for steelmaking, transfer of the molten metal 12 is reduced, the smelting flow is shortened, heat dissipation and environmental pollution in the production process are reduced, the production efficiency is improved, the energy consumption is reduced, and the energy is saved; and each smelting area is separately provided with an electrode assembly 1, so that energy can be supplemented for heat dissipation in the smelting process of the furnace, and molten metal can be heated to maintain the temperature or raise the temperature to reach the required temperature.
The process of direct reduced iron smelting for melting requires that the furnace atmosphere be maintained in a reducing atmosphere and that the furnace atmosphere be maintained in an oxygen-free state. The direct iron is a porous loose solid, is extremely easy to oxidize and spontaneous combustion, and is extremely easy to cause oxidation loss of the reduced iron in an aerobic high-temperature environment in the furnace, so that the metal yield is reduced. Therefore, reducing atmosphere such as CO, H2 and CO2 in flue gas is maintained, and O2 is as low as possible; in the steelmaking process, C in molten iron is oxidized, and oxygen blowing decarburization is generally adopted. The structure of the upper furnace body 5, the furnace cover 18 and the partition wall 11 ensures that the molten metal 12 flows from the melting zone 100 (reduction zone) to the steelmaking zone 200 (oxidation zone), and the mutual flow of the flue gas and the slag is successfully blocked, so that the respective required smelting atmosphere is maintained.
As shown in fig. 1, 3 and 5, the lower furnace body 7 is long, the smelting areas are sequentially arranged according to smelting sequence, the smelting area positioned at the first smelting position is a smelting area 100, the rest smelting areas are steelmaking areas 200, the steelmaking areas 200 adjacent to the smelting area 100 are communicated with the smelting area 100, and the steelmaking areas 200 are sequentially communicated.
In this example, the feeding device 2 and the dust removing opening 3 are arranged on the furnace cover 18, and in other embodiments, the feeding device and the dust removing opening may also be arranged on the upper furnace body 5. The materials 14 added by the charging device 2 of each smelting zone can be different, and the charging device 2 of the smelting zone 100 mainly completes charging of raw materials (direct reduced iron, direct reduced iron and scrap steel or metal ore) and ingredients, and the charging device 2 of the steelmaking zone 200 mainly completes charging of auxiliary materials in the steelmaking process.
In some embodiments, at least one slag tap 6 is provided on the lower vessel 7 of each smelting zone for discharging slag 13, at least the last stage smelting zone is provided with a molten metal outlet 8 for tapping molten steel, and the location of the molten metal outlet 8 may be arranged on the side of the steelmaking zone 200 remote from the smelting zone 100. A bottom drain 10 may be provided on the lower furnace body 7 as required to empty the electric furnace for equipment overhaul.
As shown in fig. 1 and 2, in some embodiments, the smelting areas are two, including a smelting area 100 and a steelmaking area 200 which are communicated, a side wall gun 9 is arranged on an upper furnace body 5 of the steelmaking area 200 or a top blowing gun 4 is arranged on a furnace cover 18 of the steelmaking area 200, and the side wall gun 9 and the top blowing gun 4 are used for oxygen blowing decarburization; the steelmaking area 200 is provided with a molten metal outlet 8, the molten metal outlet 8 being located below the tap hole 6.
As shown in fig. 3 and 4, in some embodiments, the smelting areas are three, including a smelting area 100 and two steelmaking areas 200 which are sequentially communicated, a side wall gun 9 is arranged on an upper furnace body 5 of the steelmaking area 200, or a top blowing gun 4 is arranged on a furnace cover 18 of the steelmaking area 200, at least the steelmaking area 200 far from the smelting area 100 is provided with a molten metal outlet 8, and of course, both steelmaking areas 200 can be provided with the molten metal outlet 8.
When the molten metal 12 (such as tapping) is discharged from the molten metal outlet 8, molten iron in the molten metal zone 100 flows to the steelmaking region 200, the molten iron and the molten steel are mixed, and the carbon content and the like of the molten steel are reduced; however, if the primary steelmaking area 200 is provided, the carbon content and other components of the molten metal 12 of the next stage are further improved, so that high-quality molten steel is obtained, and progressive refinement can be realized.
Providing one melt zone 100 and at least two steelmaking zones 200 in series can achieve progressive steelmaking and improve the quality of the steel.
As shown in fig. 5 and 6, in some embodiments, the smelting areas are two, including a smelting area 100 and a steelmaking area 200 which are communicated, the steelmaking area 200 includes a first smelting area 201 and a second smelting area 202 which are arranged side by side, a space is arranged between the first smelting area 201 and the second smelting area 202, no barrier is arranged, and the molten metal 12, slag 13 and flue gas between the first smelting area 201 and the second smelting area 202 are all communicated, and the atmospheres are the same, namely the oxidizing atmosphere; the first smelting zone 201 is communicated with the smelting zone 100 through a connecting channel 17, and the first smelting zone 201 and the second smelting zone 202 are both provided with an electrode assembly 1, a feeding device 2 and a dust removal port 3. The partition wall 11 may be omitted from two smelting areas of the same atmosphere to reduce refractory wear.
As shown in fig. 7 and 8, in some embodiments, a preheating device for heating the material 14 is further disposed on the melt zone 100.
Wherein, the upper furnace body 5 is provided with a longitudinally extending stacking space, the feeding device 2 is arranged at the top of the upper furnace body 5, the top or the side surface of the upper furnace body 5 is also provided with the dust removing opening 3, the lower end of the upper furnace body 5 is communicated with the melting zone 100, the lower part of the upper furnace body 5 is circumferentially provided with a plurality of air openings 15/burners, so that hot air is blown into the stacking space through the air openings 15, or the material 14 is heated through the burners.
The hot air introduced through the air port 15 and the smelting flue gas of the smelting zone 100 preheat the material 14 piled in the piling space in the upward process, and are discharged through the dust removal port 3 after heat exchange, and the dust removal port 3 can be connected with a dust removal device and the like.
In some embodiments, the melt zone 100 may be configured with a lance 16 to blow carbon powder or the like.
The integrated electric furnace is suitable for a direct current electric furnace and an alternating current electric furnace, so that the electrode assembly 1 can adopt an alternating current electrode or a direct current electrode device with a bottom electrode. Generally, the electrode assembly 1 of the melting zone 100 will be more powerful than the electrode assembly of the steelmaking zone 200 because the steelmaking zone 200 is mainly a bath temperature rise, and the electric energy requirement of the steelmaking zone 200 is lower (similar to electric furnace full smelting molten iron smelting, low power consumption operation can be realized) due to the energy input of oxygen lance injection and the like. The electrode assembly 1 includes one to a plurality of electrodes.
During electric furnace smelting, a material 14 is added into a smelting zone 100, an electrode assembly 1 heats and melts the material 14 in an arc, a reducing atmosphere is maintained in the zone, a metal liquid 12 sinks into a bottom layer, a slag liquid 13 floats on the metal liquid 12, and the slag liquid 13 is discharged periodically through a slag hole 6 of the smelting zone 100; the molten metal 12 at the bottom of the furnace enters the adjacent steelmaking region 200 through the connection channel 17 at the bottom region of the partition wall 11, is heated by the electrode assembly 1 of the steelmaking region 200 to further raise the temperature, and is subjected to a specific process (for example, decarburization of molten iron) at the top lance 4, the side lance 9 and the top lance side, the partition wall 11, the upper furnace body 5, and the furnace cover 18 to separate the furnace atmosphere and the slag liquid 13 of the adjacent steelmaking region. The electric furnace can melt low-quality direct-return iron, and also can smelt reduced iron/scrap steel mixed ingredients, metal ores and the like.
In summary, the steelmaking energy-saving link is a multi-process and multi-technology path, and the embodiment integrates different processes and different technology paths of electric furnace smelting, shortens the process, and comprehensively saves energy and reduces emission. Taking direct reduced iron as an example: the electric energy consumption of the melting and separating process section is reduced and the energy efficiency of the melting and separating section is improved by combining chemical energy (blowing hot air at an air port or burning a burner); after the melting is completed, the energy loss caused by tapping and transporting of the melting furnace is reduced, the direct steel making and tapping is realized, the flow is shortened, the operation is reduced to realize the optimized emission reduction in the flow process, the operators are reduced, and the production automation level is improved.
Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. An integrated electric furnace for melting and steelmaking is characterized in that: comprises a lower furnace body, an upper furnace body, a furnace cover and an electrode assembly;
A partition wall is arranged in the lower furnace body, the partition wall divides the lower furnace body into at least two smelting areas which are arranged side by side, a connecting channel for circulating molten metal in each smelting area is arranged at the bottom of the partition wall, and the partition wall is used for separating slag liquid and flue gas in each smelting area; wherein, at least one smelting area is used for smelting in a smelting way, and at least one smelting area is used for steelmaking;
Each smelting area is correspondingly provided with an upper furnace body, a furnace cover and an electrode assembly, and the electrode assembly penetrates through the furnace cover and then stretches into the smelting area;
each smelting area is provided with a feeding device and a dust removal port.
2. The integrated melting and steelmaking furnace as claimed in claim 1, wherein: the lower furnace body is long, the smelting area positioned in the first smelting position is a smelting area, and the rest smelting areas are steelmaking areas.
3. The integrated melting and steelmaking furnace as claimed in claim 1, wherein: the feeding device and the dust removing opening are arranged on the furnace cover or the furnace body.
4. The integrated melting and steelmaking furnace as claimed in claim 1, wherein: the lower furnace body of each smelting zone is provided with a slag outlet, and at least the smelting zone of the last stage is provided with a molten metal outlet.
5. The integrated fusion and steelmaking furnace according to any one of claims 1-4, wherein: the two smelting areas comprise a smelting area and a steelmaking area which are communicated, wherein a side wall gun is arranged on an upper furnace body of the steelmaking area or a top blowing gun is arranged on a furnace cover of the steelmaking area, and a molten metal outlet is arranged in the steelmaking area.
6. The integrated fusion and steelmaking furnace according to any one of claims 1-4, wherein: the smelting areas are three, each smelting area comprises a smelting area and two steelmaking areas which are sequentially communicated, a side wall gun is arranged on an upper furnace body of each steelmaking area, a top blowing gun is arranged on a furnace cover of each steelmaking area, and a molten metal outlet is arranged at least in the steelmaking area far away from each smelting area.
7. The integrated fusion and steelmaking furnace according to any one of claims 1-4, wherein: the two smelting areas comprise a smelting area and a steelmaking area which are communicated, wherein the steelmaking area comprises a first smelting area and a second smelting area which are arranged side by side, and the first smelting area is communicated with molten metal and slag in the second smelting area and has the same atmosphere; the first smelting area is communicated with the smelting area through a connecting channel, and the first smelting area and the second smelting area are both provided with an electrode assembly, a feeding device and a dust removing opening.
8. The integrated fusion and steelmaking furnace according to any one of claims 1-4, wherein: the electrode assembly adopts an alternating current electrode or a direct current electrode, and comprises one electrode to a plurality of electrodes.
9. The integrated fusion and steelmaking furnace according to any one of claims 1-4, wherein: the melting zone is also provided with a preheating device for heating the materials.
10. The fusion and steelmaking integrated furnace as defined in claim 9 wherein: the upper furnace body is provided with a longitudinally extending stacking space, the feeding device is arranged at the top of the upper furnace body, the dust removing opening is arranged at the top or the side surface of the upper furnace body, the lower end of the upper furnace body is communicated with the smelting area, and a plurality of air openings or burners are circumferentially arranged at the lower part of the upper furnace body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322598227.8U CN220818542U (en) | 2023-09-22 | 2023-09-22 | Integrated electric furnace for melting and steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322598227.8U CN220818542U (en) | 2023-09-22 | 2023-09-22 | Integrated electric furnace for melting and steelmaking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220818542U true CN220818542U (en) | 2024-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322598227.8U Active CN220818542U (en) | 2023-09-22 | 2023-09-22 | Integrated electric furnace for melting and steelmaking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220818542U (en) |
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2023
- 2023-09-22 CN CN202322598227.8U patent/CN220818542U/en active Active
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