CN115289832A - Energy-saving and environment-friendly direct-current electric smelting submerged arc furnace - Google Patents
Energy-saving and environment-friendly direct-current electric smelting submerged arc furnace Download PDFInfo
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- CN115289832A CN115289832A CN202210891824.7A CN202210891824A CN115289832A CN 115289832 A CN115289832 A CN 115289832A CN 202210891824 A CN202210891824 A CN 202210891824A CN 115289832 A CN115289832 A CN 115289832A
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- 238000003723 Smelting Methods 0.000 title claims abstract description 19
- 238000001816 cooling Methods 0.000 claims abstract description 49
- 238000003825 pressing Methods 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 23
- 239000010949 copper Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 241001275902 Parabramis pekinensis Species 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000010030 laminating Methods 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000002500 effect on skin Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/08—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces heated electrically, with or without any other source of heat
- F27B3/085—Arc furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/20—Arrangements of heating devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
- F27B3/24—Cooling arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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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
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention relates to an energy-saving environment-friendly direct current smelting submerged arc furnace, which comprises a furnace body, a furnace cover and an even number of electrodes, and further comprises a feeding system, a smoke hood, an electrode lifting system, a cooling water circulating system and a power supply system, wherein copper tiles electrically connected with the power supply system are attached to the outer sides of the electrodes, the even number of electrodes comprise cathodes and anodes with the same number, and the cathodes and the anodes are arranged in a staggered manner; the power supply system comprises an alternating current power supply, and a rectifier transformer and an alternating current-direct current converter are sequentially connected in series between the alternating current power supply and the copper tile; the periphery of the electrode is also provided with a pressing ring, the pressing ring is provided with a plurality of pressing mechanisms, the pressing mechanisms are used for pressing the copper tiles on the periphery of the electrode, the pressing ring is also internally provided with a cooling cavity, the pressing ring is provided with a water inlet and a water outlet which are communicated with the cooling cavity, and the water inlet and the water outlet are both connected with the cooling water circulation system. The invention can realize direct current power supply to the electrode, and is beneficial to reducing harmonic loss and improving the stability of the electric arc.
Description
Technical Field
The invention relates to the technical field of submerged arc furnaces, in particular to an energy-saving and environment-friendly direct current smelting submerged arc furnace.
Background
The current power frequency submerged arc furnace is a large energy consumer, and the cost of electric energy accounts for more than half of the total cost. The traditional power frequency submerged arc furnace is technically improved, the electric energy consumption is reduced, and the green production becomes the important factor for related enterprises to survive and develop in a new form.
The traditional submerged arc furnace production process is that three-phase 50Hz high-voltage alternating current of a power grid is directly reduced to low voltage by a transformer and then supplied to three-phase electrodes in the submerged arc furnace, and because the submerged arc furnace operates at low voltage and high current during operation, the voltage drop of reactance on a short network reaches about 10-15% of rated output voltage. On one hand, the actual furnace entering power is reduced, so that the voltage fluctuation on the electrode is increased, the furnace condition is difficult to master, the production efficiency is reduced, meanwhile, the power factor of a power grid is reduced, the lowest power factor is only about 0.6, and the power consumption is serious in long-term work; on the other hand, because the voltage between the three-phase electrodes is difficult to control and balance, and circulation exists, the graphite electrodes are easy to damage, the electrode consumption is very large, the burden of each production enterprise is heavy, and the benefit is seriously influenced.
In the domestic small and large submerged arc furnace, an electric furnace transformer is adopted to directly reduce the high voltage (10 kV, 35kV and 110 kV) to 140V-200V required by the submerged arc furnace, a crude transformer is adopted to reduce the voltage and then supply power to the submerged arc furnace by three electrodes according to the size of the capacity, the power factor is between 0.6 and 0.85 along with the difference of the production products and the capacity of the submerged arc furnace, three single-phase transformers are additionally used for supplying power for the submerged arc furnace with larger capacity (such as 27000 kVA), the primary voltages of the three electric furnace transformers are respectively UAB, UBC and UCA for reducing the length of a short network, and the problems of unbalanced load and larger harmonic wave of a three-phase power grid are more prominent.
Disclosure of Invention
Aiming at the defects in the prior art, the technical problem to be solved by the invention is to provide the energy-saving and environment-friendly direct current smelting ore furnace, which is powered by direct current and is more energy-saving and environment-friendly.
In order to solve the technical problems, the invention provides an energy-saving and environment-friendly direct current electric smelting submerged arc furnace, which comprises a furnace body, a furnace cover and an even number of electrodes, wherein the electrodes penetrate through the furnace cover and extend into the furnace body; the power supply system comprises an alternating current power supply, and a rectifier transformer and an alternating current-direct current converter are sequentially connected in series between the alternating current power supply and the copper tile; the periphery of the electrode is also provided with a pressing ring, the pressing ring is provided with a plurality of pressing mechanisms, the pressing mechanisms are used for pressing the copper tiles on the periphery of the electrode, a cooling cavity is also arranged in the pressing ring, the pressing ring is provided with a water inlet and a water outlet which are communicated with the cooling cavity, and the water inlet and the water outlet are both connected with the cooling water circulation system.
In the invention, the number of the electrodes is even, the electrodes comprise the same number of cathodes and anodes, one cathode and one anode form an electrode pair, and an alternating current power supply is converted into direct current through the rectifier transformer and the alternating current-direct current converter, so that the direct current power supply of the electrodes can be realized, the harmonic loss is reduced, the arc stability is improved, the network power factor is improved, the skin effect is eliminated, and the short network installation cost is saved.
Preferably, the compression ring comprises a first split body and a second split body, and the first split body and the second split body are connected through a bolt; the cooling structure is characterized in that a first cooling cavity is arranged in the first division body, a second cooling cavity is arranged in the second division body, and the first cooling cavity and the second cooling cavity form the cooling cavity after being in butt joint.
Preferably, two butt ends of the first split body are provided with sockets communicated with the first cooling cavity; the two butt joint ends of the second split body are respectively provided with a plug-in column in a protruding mode, the outer periphery of the plug-in column is matched with the inner periphery of the socket, and the inner periphery of the plug-in column is provided with a through hole communicated with the second cooling cavity; the inserting columns are inserted into the inserting openings in a one-to-one corresponding mode, and first sealing rings are embedded in the peripheries of the inserting columns. Traditional clamp ring also includes a plurality of components of a whole that can function independently, but the cooling chamber of its every components of a whole that can function independently, in-service use, need set up water inlet and delivery port alone on every components of a whole that can function independently, in manufacturing, the inside of components of a whole that can function independently has confined cooling chamber, unable integrated into one piece, only can adopt the weld forming technology, then its surface will probably form the welding seam, in the hot stove in ore deposit of high temperature, the condition of welding seam fracture appears easily, influences the normal use of hot stove in ore deposit. In the invention, the first cooling cavity of the first split body and the second cooling cavity of the second split body are both in an open form, so that the first cooling cavity and the second cooling cavity of the first split body can be integrally formed by adopting a casting process during manufacturing, no welding seam exists on the surface, the safety is higher, in addition, the first cooling cavity and the second cooling cavity are mutually communicated, only one water inlet and one water outlet can be arranged on the compression ring, and the structure is simplified.
Preferably, the second split body is provided with a slot around the insertion column, the first split body is provided with an annular boss, and the annular boss is matched with the slot; the annular bosses are inserted into the slots in a one-to-one corresponding mode, and second sealing rings are embedded in the peripheries of the annular bosses. The annular boss and the slot are matched to realize secondary sealing of butt joint of the first split body and the second split body so as to prevent the leakage of cooling water.
Preferably, the cooling cavity is provided with an inner side wall and an outer side wall which are coaxially arranged, a plurality of connecting sections are connected between the inner side wall and the outer side wall, and the connecting sections are uniformly distributed around the circumference of the axis of the compression ring; and mounting holes are formed in the inner periphery of the connecting section, penetrate through the inner side and the outer side of the compression ring along the radial direction, correspond to the copper tiles one to one, and are internally provided with the compression mechanisms. With this structure, the connecting section does not affect the mutual communication of the cooling chambers.
Preferably, the mounting hole is a threaded hole, the pressing mechanism comprises a screw rod in threaded connection with the threaded hole, a handle is arranged at one end, away from the pressing ring, of the screw rod, a pressing plate is connected to the other end of the screw rod, the pressing plate and the screw rod are axially and relatively fixed and can rotate in the circumferential direction, and the inner side of the pressing plate is matched with the outer side of the copper tile. The pressing plate is additionally arranged to be matched with the copper tile, the contact area of the pressing plate and the copper tile is large, pressure can be uniformly applied to the copper tile, and the condition that the traditional copper tile is locally pressed is effectively improved.
Preferably, one end of the screw rod close to the pressure plate is fixedly connected with a clamping plate, and the clamping plate is in contact with the pressure plate; the clamping plate is characterized in that a fixing piece is detachably and fixedly connected to one side, close to the screw rod, of the clamping plate, a containing cavity capable of containing the clamping plate is formed in the inner periphery of the fixing piece, a baffle is arranged on the fixing piece and can limit the position of the clamping plate, the clamping plate is enabled to be located in the containing cavity all the time, and the outer periphery of the clamping plate is separated from the inner periphery of the containing cavity. Then when rotating the screw rod, the screw rod can be rotating and be close to or keep away from the copper tile, and when the screw rod rotated, cardboard simultaneous movement to drive the clamp plate and be close to or keep away from the copper tile, because the cardboard has the distance with holding between the lateral wall in chamber, then when the cardboard rotated, can not drive the clamp plate and rotate, prevent to appear rubbing between clamp plate and the copper tile.
Preferably, a plurality of first balls are arranged between the clamping plate and the baffle, a plurality of second balls are arranged between the clamping plate and the pressing plate, a first rail and a second rail are arranged on two sides of the clamping plate, and the first balls and the second balls are respectively arranged in the first rail and the second rail.
Preferably, a plurality of groups of fins are further arranged on the inner periphery of the compression ring, and a group of fins is arranged between two adjacent pressure plates and does not protrude out of the inner periphery of the pressure plates in the radial direction. The fins are arranged, so that heat on the electrode can be rapidly transferred to the compression ring, and the electrode is cooled more effectively.
Preferably, the number of said electrodes is four.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural diagram of an energy-saving and environment-friendly direct current smelting submerged arc furnace according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a clamp ring according to an embodiment of the present invention;
FIG. 3 is a partial enlarged view A of FIG. 2;
FIG. 4 is a partial enlarged view B of FIG. 2;
fig. 5 is a block diagram of an electrode power supply according to an embodiment of the present invention.
Reference numerals:
1-furnace body; 2-furnace cover; 3-an electrode; 4-a feeding system; 5-smoke hood; 6-an electrode lifting system; 7-a compression ring; 71-a first split; 711-a first cooling chamber; 712-a socket; 713-an annular boss; 72-a second body; 721-a second cooling chamber; 722-plug columns; 723-slot; 73-a connecting segment; 74-a fin; 8-a pressing mechanism; 81-screw rod; 82-a handle; 83-catch plate; 84-a platen; 85-a fixing piece; 851-baffles.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the embodiment discloses an energy-saving and environment-friendly dc smelting submerged arc furnace, which comprises a furnace body 1, a furnace cover 2 and an even number of electrodes 3, wherein the electrodes 3 penetrate through the furnace cover 2 and extend into the furnace body 1, and the energy-saving and environment-friendly dc smelting submerged arc furnace further comprises a feeding system 4, a smoke hood 5, an electrode lifting system 6, a cooling water circulation system and a power supply system. It should be noted that the feeding system 4, the smoke hood 5, the electrode lifting system 6 and the cooling water circulation system are all in the prior art.
In this embodiment, the number of the electrodes 3 is 4, and the electrodes include two cathodes and two anodes, the cathodes and the anodes are arranged in a staggered manner, and the adjacent cathodes and anodes form an electrode pair to release electric arcs; referring to fig. 3, the power supply system includes an ac power supply, and a rectifier transformer and an ac-dc converter are sequentially connected in series between the ac power supply and the copper shoe, so as to implement dc power supply to the electrode 3, which is beneficial to reduce harmonic loss, improve arc stability, improve grid power factor, eliminate skin effect, and save short grid installation cost.
The copper tile electrically connected with a power supply system is attached to the outer side of the electrode 3, a compression ring 7 is further arranged on the periphery of the electrode 3, a plurality of compression mechanisms 8 are arranged on the compression ring 7, and the compression mechanisms 8 are used for compressing the copper tile on the periphery of the electrode 3.
A cooling cavity is further arranged in the clamp ring 7, a water inlet and a water outlet which are communicated with the cooling cavity are formed in the clamp ring 7, and the water inlet and the water outlet are both connected with a cooling water circulation system. Specifically, the compression ring 7 includes a first split body 71 and a second split body 72, and the first split body 71 and the second split body 72 are connected by a bolt; a first cooling chamber 711 is provided in the first section 71, a second cooling chamber 721 is provided in the second section 72, and the first cooling chamber 711 and the second cooling chamber 721 are joined to form a cooling chamber.
Furthermore, two abutting ends of the first split body 71 are both provided with a socket 712 communicated with the first cooling cavity 711; two butt ends of the second section 72 are respectively provided with a plug column 722 in a protruding manner, the outer periphery of the plug column 722 is matched with the inner periphery of the socket 712, and the inner periphery of the plug column 722 is provided with a through hole communicated with the second cooling cavity 721; the inserting columns 722 are inserted into the inserting holes 712 in a one-to-one correspondence manner, and a first sealing ring is embedded on the periphery of the inserting columns 722. In this embodiment, the first cooling cavity 711 of the first sub-body 71 and the second cooling cavity 721 of the second sub-body 72 are both in an open form, and therefore, during manufacturing, the first cooling cavity 711 and the second cooling cavity 721 can be integrally formed by a casting process, no weld is formed on the surfaces, and the safety is higher.
Furthermore, a slot 723 is formed in the second split body 72 around the insertion column 722, an annular boss 713 is arranged on the first split body 71, and the annular boss 713 is matched with the slot 723; the annular bosses 713 are inserted into the slots 723 in a one-to-one correspondence, and second seal rings are embedded on the outer peripheries of the annular bosses 713. Annular boss 713 and slot 723 cooperate to effect a secondary seal of the interface of first body 7 and second body 72 to prevent a cooling water leak.
Further, the cooling cavity is provided with an inner side wall and an outer side wall which are coaxially arranged, a plurality of connecting sections 73 are connected between the inner side wall and the outer side wall, and the connecting sections 73 are uniformly distributed around the circumference of the axis of the compression ring 7; the inner periphery of the connecting section 7 is formed with a mounting hole, the mounting hole is specifically a threaded hole, the mounting hole penetrates through the inner side and the outer side of the compression ring 7 along the radial direction, the mounting hole corresponds to the copper tiles in a one-to-one manner, the compression mechanism 8 is mounted in the mounting hole, the compression mechanism 8 comprises a screw 81 which is in threaded connection with the mounting hole, one end, far away from the compression ring 7, of the screw 81 is provided with a handle 82, the other end of the screw 81 is fixedly connected with a clamping plate 83, the clamping plate 83 is provided with a stud, the inner periphery of the end portion of the screw 81 is provided with a threaded hole in threaded connection with the stud, so that the clamping plate 83 and the screw 81 are fixedly connected, one side, far away from the screw 81, of the clamping plate 83 is in contact connection with a pressing plate 84, the inner side of the pressing plate 84 is matched with the outer side of the copper tiles, one side, near the screw 81, of the pressing plate 84 is detachably and fixedly connected with a fixing piece 85 through the screw, the inner periphery of the fixing piece 85 is formed with a containing cavity capable of containing the clamping plate 83, the clamping plate 85 is provided with a baffle 851, the baffle 851 capable of limiting the position of the clamping plate 83, so that the clamping plate 83 is always located in the containing cavity, and the fixing piece 83 is located in a distance. With this structure, the pressure plate 84 and the screw 81 are axially fixed relative to each other and can rotate relative to each other in the circumferential direction. Add clamp plate 84 and the cooperation of brasses, clamp plate 84 and brasses area of contact are great, can apply pressure to the brasses uniformly, effectively improve the local pressurized condition of traditional brasses, and when rotating screw rod 81, screw rod 81 can be rotatory being close to or keeping away from the brasses, when screw rod 81 rotates, cardboard 83 synchronous motion, and drive clamp plate 84 and be close to or keep away from the brasses, because cardboard 83 has the distance with between the lateral wall that holds the chamber, then when cardboard 83 rotates, can not drive clamp plate 84 and rotate, prevent to appear the friction between clamp plate 84 and the brasses.
Further, a plurality of first balls are arranged between the blocking plate 83 and the blocking plate 851, a plurality of second balls are arranged between the blocking plate 83 and the pressing plate 84, a first rail and a second rail are arranged on two sides of the blocking plate 83, and the first balls and the second balls are respectively arranged in the first rail and the second rail to reduce the friction force among the blocking plate 851, the blocking plate 83 and the pressing plate 84.
Further, a plurality of sets of fins 74 are disposed on the inner periphery of the clamp ring 7, and a set of fins 74 is disposed between two adjacent pressure plates 84, the fins 74 do not protrude from the inner periphery of the pressure plates 84 in the radial direction, and the fins 74 can rapidly transfer heat on the electrode 3 to the clamp ring 7 to more effectively cool the electrode 3.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, systems, and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, system, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, systems, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of the embodiments of the present invention, and are intended to be covered by the claims and the specification of the present invention.
Claims (10)
1. The utility model provides an energy-concerving and environment-protective direct current electric smelting submerged arc furnace, includes furnace body, bell and an even number electrode, the electrode passes the bell stretches into in the furnace body, still include feeding system, petticoat pipe, electrode operating system, cooling water circulation system and power supply system, the outside laminating of electrode have with the brasses that the power supply system electricity is connected, its characterized in that:
the even number of the electrodes comprises the same number of cathodes and anodes, and the cathodes and the anodes are arranged in a staggered mode;
the power supply system comprises an alternating current power supply, and a rectifier transformer and an alternating current-direct current converter are sequentially connected in series between the alternating current power supply and the copper tile;
the periphery of the electrode is also provided with a pressing ring, the pressing ring is provided with a plurality of pressing mechanisms, the pressing mechanisms are used for pressing the copper tiles on the periphery of the electrode, a cooling cavity is also arranged in the pressing ring, a water inlet and a water outlet which are communicated with the cooling cavity are arranged on the pressing ring, and the water inlet and the water outlet are both connected with the cooling water circulation system.
2. The energy-saving environment-friendly direct current smelting ore furnace according to claim 1, characterized in that:
the compression ring comprises a first split body and a second split body, and the first split body is connected with the second split body through a bolt;
the cooling structure is characterized in that a first cooling cavity is arranged in the first division body, a second cooling cavity is arranged in the second division body, and the first cooling cavity and the second cooling cavity form the cooling cavity after being in butt joint.
3. The energy-saving environment-friendly direct current smelting submerged arc furnace according to claim 2, characterized in that:
two butt-joint ends of the first split body are respectively provided with a socket communicated with the first cooling cavity;
the two butt joint ends of the second split body are respectively provided with a plug column in a protruding mode, the outer periphery of the plug column is matched with the inner periphery of the socket, and the inner periphery of the plug column is provided with a through hole communicated with the second cooling cavity;
the inserting columns are inserted into the sockets in a one-to-one correspondence mode, and first sealing rings are embedded in the peripheries of the inserting columns.
4. The energy-saving environment-friendly direct current smelting ore furnace according to claim 3, characterized in that:
a slot is formed in the second split body around the insertion column, an annular boss is arranged on the first split body, and the annular boss is matched with the slot;
the annular bosses are correspondingly inserted into the slots one by one, and second sealing rings are embedded on the peripheries of the annular bosses.
5. The energy-saving environment-friendly direct current smelting ore furnace according to claim 1, characterized in that:
the cooling cavity is provided with an inner side wall and an outer side wall which are coaxially arranged, a plurality of connecting sections are connected between the inner side wall and the outer side wall, and the connecting sections are uniformly distributed around the circumference of the axis of the compression ring;
and the inner periphery of the connecting section is provided with a mounting hole which penetrates through the inner side and the outer side of the compression ring along the radial direction, the mounting holes correspond to the copper tiles one by one, and the compression mechanism is arranged in the mounting holes.
6. The energy-saving environment-friendly direct current smelting submerged arc furnace according to claim 5, characterized in that:
the mounting hole is a threaded hole, the pressing mechanism comprises a screw rod in threaded connection with the threaded hole, a handle is arranged at one end, away from the pressing ring, of the screw rod, a pressing plate is connected to the other end of the screw rod, the pressing plate and the screw rod are axially and relatively fixed and can rotate in the circumferential direction, and the inner side of the pressing plate is matched with the outer side of the copper tile.
7. The energy-saving environment-friendly direct current smelting submerged arc furnace according to claim 6, characterized in that:
one end of the screw rod, which is close to the pressure plate, is fixedly connected with a clamping plate, and the clamping plate is contacted with the pressure plate;
the clamping plate is characterized in that a fixing piece is detachably and fixedly connected to one side, close to the screw rod, of the clamping plate, a containing cavity capable of containing the clamping plate is formed in the inner periphery of the fixing piece, a baffle is arranged on the fixing piece and can limit the position of the clamping plate, the clamping plate is enabled to be located in the containing cavity all the time, and the outer periphery of the clamping plate is separated from the inner periphery of the containing cavity.
8. The energy-saving environment-friendly direct current smelting submerged arc furnace according to claim 7, characterized in that:
the clamping plate is characterized in that a plurality of first balls are arranged between the clamping plate and the baffle, a plurality of second balls are arranged between the clamping plate and the pressing plate, a first rail and a second rail are arranged on two sides of the clamping plate, and the first balls and the second balls are respectively arranged in the first rail and the second rail.
9. The energy-saving environment-friendly direct current smelting ore furnace according to claim 6, characterized in that:
the inner periphery of the compression ring is also provided with a plurality of groups of fins, a group of fins are arranged between every two adjacent pressure plates, and the fins do not protrude out of the inner periphery of the pressure plates in the radial direction.
10. The energy-saving environment-friendly direct current smelting ore furnace according to claim 1, characterized in that:
the number of the electrodes is four.
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| CN202210891824.7A CN115289832A (en) | 2022-07-27 | 2022-07-27 | Energy-saving and environment-friendly direct-current electric smelting submerged arc furnace |
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| CN202210891824.7A CN115289832A (en) | 2022-07-27 | 2022-07-27 | Energy-saving and environment-friendly direct-current electric smelting submerged arc furnace |
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| CN202005006U (en) * | 2011-03-24 | 2011-10-05 | 西安电炉研究所有限公司 | Novel water-cooled pressure ring for ore-smelting electric furnace |
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Inventor after: Jia Daran Inventor after: Bai Yin Inventor after: Huang Liwei Inventor after: Liu Jingxia Inventor after: Li Yingchao Inventor after: Wang Shengfa Inventor after: Qi Guoxin Inventor after: Ma Yousufu Inventor after: Ma Jilin Inventor after: Wang Haicun Inventor after: Shang Menghe Inventor after: Sun Deqiang Inventor after: Wang Fu Inventor after: Jia Xin Inventor after: Jia Shuhan Inventor after: Tian Fenglin Inventor after: Hou Quanqiang Inventor after: Yin Huiping Inventor after: Ma Zhanlong Inventor before: Jia Daran Inventor before: Bai Yin Inventor before: Huang Liwei Inventor before: Liu Jingxia Inventor before: Li Yingchao Inventor before: Wang Shengfa Inventor before: Qi Guoxin Inventor before: Ma Yousufu Inventor before: Ma Jilin Inventor before: Wang Haicun Inventor before: Sun Deqiang Inventor before: Wang Fu Inventor before: Jia Xin Inventor before: Jia Shuhan Inventor before: Tian Fenglin Inventor before: Hou Quanqiang Inventor before: Yin Huiping Inventor before: Ma Zhanlong |