CN217483267U - Furnace charge preheating device for submerged arc furnace - Google Patents
Furnace charge preheating device for submerged arc furnace Download PDFInfo
- Publication number
- CN217483267U CN217483267U CN202221035316.0U CN202221035316U CN217483267U CN 217483267 U CN217483267 U CN 217483267U CN 202221035316 U CN202221035316 U CN 202221035316U CN 217483267 U CN217483267 U CN 217483267U
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- Prior art keywords
- submerged arc
- arc furnace
- preheating device
- fence
- blanking
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- 238000009423 ventilation Methods 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000002918 waste heat Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 9
- 238000003723 Smelting Methods 0.000 description 8
- 239000003034 coal gas Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000616 Ferromanganese Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910001145 Ferrotungsten Inorganic materials 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 1
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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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- Furnace Details (AREA)
Abstract
The utility model provides a furnace charge preheating device of an ore heating furnace, which comprises a blanking disc, a separation plate and a ventilation fence, wherein the separation plate and the ventilation fence are fixed at the bottom end of the blanking disc; the isolation plate surrounds the outer side of the furnace electrode and is positioned on the inner side of the discharging hole; the air permeable fence is arranged around the outer side of the blanking hole, so that a preheating channel is formed on the inner side of the air permeable fence. The utility model discloses a hot stove furnace charge preheating device in ore deposit improves harmful substance's utilization, reduces harmful substance's emission, improves thermal utilization efficiency, reduces the heat loss of heat in the emission process.
Description
Technical Field
The utility model relates to a hot stove equipment field in ore deposit, in particular to hot stove furnace charge preheating device in ore deposit.
Background
The submerged arc furnace is also called electric arc furnace or resistance furnace. It is mainly used for reducing and smelting raw materials such as ore, carbonaceous reducing agent and solvent. The method is mainly used for producing ferrosilicon, ferromanganese, ferrochromium, ferrotungsten, silicomanganese and other ferroalloys, and is an important industrial raw material in the metallurgical industry and a chemical raw material such as calcium carbide and the like. The submerged arc furnace can be divided into a semi-closed submerged arc furnace and a fully-closed submerged arc furnace. The flue gas of the totally enclosed submerged arc furnace has very high physical sensible heat and chemical energy, the temperature of the flue gas is up to above 850 ℃, the CO content in the flue gas is about 60-80%, and other substances such as coal gas with higher heat value and the like are also contained. At present, the waste heat utilization of the totally enclosed submerged arc furnace is mainly based on recovery, the utilization mode only can utilize part of flue gas, and cannot utilize other substances such as coal gas with higher heat value, and the energy is wasted after the recovery.
SUMMERY OF THE UTILITY MODEL
For solving the problem of the waste heat utilization of the submerged arc furnace in the prior art, the utility model provides a hot furnace charge preheating device of submerged arc furnace.
The technical scheme of the utility model is realized like this:
a furnace burden preheating device of an ore-smelting furnace comprises a feeding disc, a partition plate and a ventilating fence, wherein the partition plate and the ventilating fence are fixed at the bottom end of the feeding disc; the isolation plate surrounds the outer side of the furnace electrode and is positioned on the inner side of the discharging hole; the air permeable fence is arranged around the outer side of the blanking hole, so that a preheating channel is formed on the inner side of the air permeable fence.
Preferably, a smoke exhaust pipeline is arranged on the blanking mechanism and communicated with a blanking port of the blanking mechanism, and the smoke exhaust pipeline is connected to the waste heat recovery device.
Preferably, the isolation plate is a heat insulation plate.
Preferably, a flue gas hood is fixed at the bottom end of the blanking disc and is in sealing connection with the submerged arc furnace body.
Preferably, the shape of the isolation plate surrounding the furnace electrode is arranged to be petal-shaped.
Preferably, the smoke exhaust pipeline comprises branch pipelines and an annular main pipeline, a plurality of branch pipelines are arranged on the blanking mechanism, the tops of all the branch pipelines are communicated with the annular main pipeline, and the annular main pipeline is connected to the recovery device.
Preferably, the air permeable fence is provided with a first air permeable net which is closed end to end and is in a regular shape and more than one second air permeable net which is independent and in a circular shape.
Preferably, the bottoms of the first breathable net and the second breathable net are respectively hinged with a plurality of bottom plates, the top of each bottom plate is provided with a hoisting rope, and the hoisting ropes are fixed on the hoisting device; all the bottom plates close the interval between the ventilating fence and the isolating plate.
The beneficial effects of the utility model are that: the utility model discloses a hot stove furnace charge preheating device in ore deposit, in the sealed cavity between the hot stove body of ore deposit's unloading mechanism, division board and ventilative fence are fixed on the charging tray down, form the preheating channel between division board and the ventilative fence, the unloading hole on the charging tray surrounds in preheating the passageway, preheat the passageway and extend to the unloading hole, the high-temperature gas that produces in the hot stove in ore deposit rises and gets into preheating the passageway from preheating the bottom of passageway and all around earlier, preheats the material in preheating the passageway; and part of harmful substances on part of high-temperature gas passing through the preheating channel are adsorbed on the material, and the part of high-temperature gas continuously rises to preheat the material in each blanking hole along with the material entering the submerged arc furnace body for smelting, so that the utilization of the harmful substances is improved, and the emission of the harmful substances is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of an overall structure of a furnace charge preheating device of a submerged arc furnace according to the present invention;
FIG. 2 is a schematic view of a part of the structure of a furnace charge preheating device of a submerged arc furnace according to the present invention;
FIG. 3 is a schematic bottom structure view of a furnace charge preheating device of a submerged arc furnace according to the present invention;
fig. 4 is a schematic structural view of the air permeable fence and the isolation board shown in fig. 3.
In the figure:
1. a blanking mechanism; 2. a submerged arc furnace body; 3. a preheating channel; 4. discharging a material tray; 5. a smoke exhaust duct; 6. a separator plate; 7. a ventilation fence; 8. a base plate; 9. hoisting a rope; 41. and (7) discharging holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 3, a furnace charge preheating device for a submerged arc furnace is arranged in a sealed cavity between a feeding mechanism 1 and a submerged arc furnace body 2 of the submerged arc furnace, and comprises a feeding disc 4, a partition plate 6 and a ventilation fence 7, wherein the feeding disc is fixed at the bottom end of the feeding mechanism and forms a sealed cavity with the submerged arc furnace body, the feeding disc 4 is provided with corresponding feeding holes 41, and a plurality of feeding holes are communicated with a feeding port of the feeding mechanism; the partition plate 6 and the ventilation fence 7 are fixed at the bottom end of the blanking disc, the partition plate 6 surrounds the outer side of the furnace electrode and is positioned on the inner side of the blanking hole, the ventilation fence 7 is positioned on the outer side of the blanking hole, and the preheating channel 3 is formed between the ventilation fence 7 and the partition plate 6.
The discharging mechanism 1 is provided with a smoke exhaust pipeline 5, the smoke exhaust pipeline 5 is communicated with a discharging port of the discharging mechanism, and the smoke exhaust pipeline is connected to the waste heat recovery device. And a flue gas hood is fixed at the bottom end of the blanking disc and is connected with the submerged arc furnace body in a sealing manner. Preheating channel 3 is located the top of ore smelting furnace body, and the high-temperature gas that produces in the ore smelting furnace body rises earlier from the bottom of preheating the passageway and gets into preheating channel 3 all around, preheats the material in preheating channel 3, through the exhaust pipe in rising to unloading mechanism, preheats the material in the unloading mechanism, and the passageway is preheated in the extension, effectively utilizes the heat of emission, reduces the heat loss of heat in the emission process.
The division board 6 is used for separating the electrode in the stove and the preheating channel, and the ventilation fence 7 is positioned in a sealing cavity between the blanking mechanism 1 and the submerged arc furnace body 2, so that high-temperature gas and other substances in the submerged arc furnace enter the preheating channel through the ventilation fence, enter the blanking hole through the preheating channel, and enter the smoke exhaust pipeline through the blanking mechanism after passing through the blanking hole to be recovered. The division board sets up to the heated board, has the heat preservation function to preheating the passageway.
As shown in fig. 4, the bottom of the ventilation fence 7 is hinged with a plurality of bottom plates 8, the top of each bottom plate 8 is provided with a hoisting rope 9, and the hoisting ropes 9 are fixed on the hoisting device; all the bottom plates close to close the preheating channel between the ventilating fence and the isolating plate. When the ore-smelting furnace does not need to be fed into the ore-smelting furnace body through the preheating channel, the preheating channel is closed, and the using versatility of the preheating channel is improved.
As shown in fig. 4, the air-permeable fence 7 is provided as a first air-permeable net of a regular shape closed end to end and one or more second air-permeable nets of an independent circular shape. When peripheral blanking hole has on the blanking plate, adopt this kind of structure, can enough increase the contact surface of preheating the passageway, the installation of being convenient for simultaneously also dwindles the occupation space rate, use in the closed ore deposit of being convenient for very much is hot.
As shown in fig. 3, the smoke exhaust duct 5 includes branch ducts and an annular header duct, a plurality of branch ducts are arranged on the blanking mechanism, the tops of all the branch ducts are communicated with the annular header duct, and the annular header duct is connected to the waste heat recovery device. A plurality of branch pipelines on the unloading mechanism to make the high-temperature gas omnidirectional fully preheat the material in the unloading mechanism, more efficient utilization hot-gas in the ore smelting furnace body other high temperature material such as.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Claims (8)
1. The preheating device for the furnace burden of the submerged arc furnace is characterized by comprising a blanking disc, a partition plate and a ventilation fence, wherein the partition plate and the ventilation fence are fixed at the bottom end of the blanking disc; the isolation plate surrounds the outer side of the furnace electrode and is positioned on the inner side of the discharging hole; the air permeable fence is arranged around the outer side of the blanking hole, so that a preheating channel is formed on the inner side of the air permeable fence.
2. The submerged arc furnace charge preheating device of claim 1, wherein the blanking mechanism is provided with a smoke exhaust duct, the smoke exhaust duct is communicated with a blanking port of the blanking mechanism, and the smoke exhaust duct is connected to the waste heat recovery device.
3. The submerged arc furnace charge preheating device according to claim 1, characterized in that the partition plate is provided as a heat insulation plate.
4. The submerged arc furnace charge preheating device of claim 1, wherein a flue gas hood is fixed at the bottom end of the blanking tray and is connected with the submerged arc furnace body in a sealing manner.
5. The submerged arc furnace charge preheating device according to claim 1, characterized in that the shape of the partition plate surrounding the inner electrode of the furnace is arranged to be petal-shaped.
6. The submerged arc furnace charge preheating device according to claim 2, characterized in that the flue gas discharge duct comprises branch ducts and an annular main duct, a plurality of branch ducts are arranged on the blanking mechanism, the top of all the branch ducts is communicated with the annular main duct, and the annular main duct is connected to the recovery device.
7. The submerged arc furnace charge preheating device according to claim 1, characterized in that the gas permeable fence is provided as a first gas permeable net of regular shape closed end to end and more than one second gas permeable net of independent circular shape.
8. The submerged arc furnace burden preheating device according to claim 7, characterized in that the bottoms of the first gas permeable net and the second gas permeable net are respectively hinged with a plurality of bottom plates, the top of each bottom plate is provided with a hoisting rope, and the hoisting ropes are fixed on the hoisting device; all the bottom plates close the interval between the ventilating fence and the isolating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221035316.0U CN217483267U (en) | 2022-05-02 | 2022-05-02 | Furnace charge preheating device for submerged arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221035316.0U CN217483267U (en) | 2022-05-02 | 2022-05-02 | Furnace charge preheating device for submerged arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217483267U true CN217483267U (en) | 2022-09-23 |
Family
ID=83308950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221035316.0U Active CN217483267U (en) | 2022-05-02 | 2022-05-02 | Furnace charge preheating device for submerged arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217483267U (en) |
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2022
- 2022-05-02 CN CN202221035316.0U patent/CN217483267U/en active Active
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