CN220520538U - Coarse ash feeding device for converter - Google Patents
Coarse ash feeding device for converter Download PDFInfo
- Publication number
- CN220520538U CN220520538U CN202322300361.5U CN202322300361U CN220520538U CN 220520538 U CN220520538 U CN 220520538U CN 202322300361 U CN202322300361 U CN 202322300361U CN 220520538 U CN220520538 U CN 220520538U
- Authority
- CN
- China
- Prior art keywords
- converter
- coarse ash
- communicated
- ash
- coarse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 38
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims description 26
- 238000003860 storage Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 15
- 239000010959 steel Substances 0.000 abstract description 15
- 239000002184 metal Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002893 slag Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 62
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 238000003723 Smelting Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The application discloses converter coarse ash goes into stove device includes: the device comprises a converter evaporative cooler, a bucket elevator, a coarse ash collecting tank, an ash conveying chute, a nitrogen sealing assembly and a blanking chute; the cavity of the converter evaporative cooler is communicated with a bucket elevator pipeline; the bucket elevator is arranged at one side of the coarse ash collection tank and is communicated with a feed inlet at the top of the coarse ash collection tank; the coarse ash collecting tank is communicated with a feed inlet of the converter body through an ash conveying chute, a nitrogen sealing assembly and a blanking chute. After the device is implemented, the effects of energy saving, synergy and environmental protection can be achieved. After the coarse ash of the converter is fed into the converter, the cycle times of the motor vehicle are reduced, the metal receiving rate is improved, early slag melting of the converter is facilitated, and development of a steel mill to a green factory is facilitated.
Description
Technical Field
The application relates to the technical field of steelmaking, in particular to a coarse ash feeding device of a converter.
Background
In the existing steelmaking process, the amount of dust is large, redundant dust is collected by wet dust removal, and although the wet dust removal efficiency is high, the energy consumption is increased in the subsequent sintering link after the dust is wetted. To collecting the dust, the tank car and the transfer carrier are required to be used in the existing transfer process, so that the energy consumption is high, the dust loss is easy to cause in the transfer process, the dust is required to be transferred, and the dust cannot be recycled in situ.
After analysis, a large amount of iron elements contained in the dust are found, the iron elements cannot be effectively utilized and recycled after direct sintering, and additionally purchased iron elements are required to be added in the production of the converter, so that the production cost is increased.
Disclosure of Invention
The application provides a converter coarse ash goes into stove device to above-mentioned problem, need not long-range transportation fly ash, reduces the energy consumption to realize the effective recycle of the iron element that contains in the fly ash.
The application provides a converter coarse ash goes into stove device, include: the device comprises a converter evaporative cooler, a bucket elevator, a coarse ash collecting tank, an ash conveying chute, a nitrogen sealing assembly and a blanking chute; the cavity of the converter evaporative cooler is communicated with a bucket elevator pipeline through a bag-type dust remover; the bucket elevator is arranged at one side of the coarse ash collection tank and is communicated with a feed inlet at the top of the coarse ash collection tank;
the coarse ash collecting tank is communicated with a feed inlet of the converter body through an ash conveying chute, a nitrogen sealing assembly and a blanking chute.
Preferably, it comprises: a gate valve; the gate valve is arranged on an interface of the coarse ash collection tank communicated with the ash conveying chute.
Preferably, it comprises: a material conveying pipe; the bucket elevator and the coarse ash collecting tank are communicated through a conveying pipe.
Preferably, a discharging cone is arranged on the bottom surface of the coarse ash collecting tank; and a gate valve is arranged on the bottom surface of the blanking cone.
Preferably, the nitrogen seal assembly comprises: the device comprises a nitrogen storage tank, a pipe body, a first gate valve and a pressure gauge; two ends of the pipe body are respectively communicated with a blanking chute and an ash conveying chute; a first gate valve is arranged in the tube body in a accommodated manner; the nitrogen storage tank and the pipe body are communicated through pipelines; the side wall of the pipe body is provided with a pressure gauge.
Preferably, the nitrogen seal assembly comprises: a nitrogen pump and an air valve; the nitrogen pump and the air valve are arranged on a pipeline which is communicated with the nitrogen storage tank and the pipeline at intervals.
The beneficial effects that this application can produce include:
1) The device for feeding the coarse ash into the converter can achieve the effects of energy conservation, synergy and environmental protection after being implemented by the device. After the coarse ash of the converter is fed into the converter, the cycle times of the motor vehicle are reduced, the metal receiving rate is improved, early slag melting of the converter is facilitated, and development of a steel mill to a green factory is facilitated.
2) The device for feeding the converter coarse ash provided by the application reduces the transportation times of motor vehicles and the energy consumption of the motor vehicles after feeding the converter coarse ash. The consumption of steel materials is effectively reduced, crude ash containing a large amount of ferric oxide is put into the smelting process again for slag melting operation, the consumption of iron can be effectively reduced, and through practice, the crude ash produced by each converter is about 500-700 kg after the crude ash is directly put into the converter, the iron content is 59.82%, the yield of 255-357 kg molten steel per steel can be obtained, and the cost can be reduced by about 7 yuan per ton of steel calculated according to the scrap price of 3318 yuan per ton. According to 5000t of daily steel production, the annual production day is 300 days, and the annual economic benefit is 1050 ten thousand yuan.
3) The device is gone into to the thick ash of converter that this application provided, realizes through the device that the converter evaporation cooler is interior to contain the dust return converter initial stage sediment formation by original 3 minutes 30 seconds, reduces to 1 minute 50 seconds now, improves earlier stage dephosphorization efficiency, because converter initial stage sediment formation is early, has reduced the furnace lining erosion, is favorable to dephosphorizing, has improved molten steel quality, improves the recycle rate to the ferrous metal that contains in the thick ash.
Drawings
FIG. 1 is a schematic diagram of a converter coarse ash charging device provided by the application;
FIG. 2 is a schematic diagram of a partial enlarged structure of a converter coarse ash feeding device provided by the application;
FIG. 3 is a schematic diagram of a front view of a bucket elevator and a converter evaporative cooler provided by the application;
FIG. 4 is an enlarged schematic view of a portion of a nitrogen seal assembly provided herein;
legend description:
the device comprises a coarse ash collection tank 1, a blanking cone 12, an ash conveying chute 3, a nitrogen seal assembly 4, a converter body 5, a blanking chute 6, a supporting frame 7, a gate valve 2, a conveying pipe 11, a powder conveying pump 231, a converter evaporative cooler 23, a second gate valve 232, a nitrogen pump 41, a first gate valve 411, a nitrogen storage tank 412, a pressure gauge 421, a pipe body 42, a bucket elevator 21, a base 211, a lifting motor 221, a blanking cylinder 212 and a blanking hopper 213; a bag-type dust collector 235.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.
Technical means which are not described in detail in the application and are not used for solving the technical problems of the application are all arranged according to common general knowledge in the field, and various common general knowledge arrangement modes can be realized.
Referring to fig. 1 to 4, the converter coarse ash feeding device provided by the application comprises: the device comprises a coarse ash collection tank 1, a blanking cone 12, an ash conveying chute 3, a nitrogen seal assembly 4, a converter body 5, a blanking chute 6, a supporting frame 7, a gate valve 2, a material conveying pipe 11, a powder conveying pump 231, a converter evaporative cooler 23, a second gate valve 232, a nitrogen pump 41, a first gate valve 411, a nitrogen storage tank 412, a pressure gauge 421, a pipe body 42, a bucket elevator 21, a base 211, a lifting motor 221, a blanking cylinder 212, a blanking hopper 213 and a bag-type dust remover 235.
The coarse ash collection tank 1 is arranged at a relatively high position of the converter body 5, the recovered ash automatically falls into the converter body 5 by utilizing gravity, and meanwhile, the coarse ash collection tank 1 and the converter body 5 are communicated through the ash conveying chute 3, the nitrogen seal assembly 4 and the blanking chute 6. The bottom surface of the coarse ash collection tank 1 is provided with a discharging cone 12, which is beneficial to improving the flow rate of the discharged ash. The ash conveying chute 3 can be set to be long according to the distance, and the inclined angle is set according to the height so as to realize automatic falling of ash.
The gas outlet of the converter evaporative cooler 23 is communicated with a pipeline of a bag-type dust remover 235, the bag-type dust remover 235 is communicated with a pipeline of a feed inlet of the bucket elevator 21, and a powder conveying pump 231 and a second gate valve 232 are arranged on the communicating pipeline to realize the pushing and conveying control of dust.
The bucket elevator 21 used is a commercially available product, and the specific structure is not described here. For example, the bucket elevator 21 used includes: a base 211, a lifting motor 221, a discharging barrel 212, a discharging hopper 213 and a lifting barrel; the lifting cylinder is arranged on the ground through a base 211; the lifting motor 221 is arranged on the top surface of the lifting cylinder; a discharge hole is formed in the side wall of the upper part of the lifting cylinder, and a discharging cylinder 212 is arranged on the discharge hole; the bottom surface of the blanking barrel 212 is provided with a blanking hopper 213, the bottom surface of the blanking hopper 213 is communicated with the conveying pipe 11, automatic blanking of recovered dust is realized, and the dust stored in the coarse ash collecting tank 1 can be opened according to production and use requirements.
In one embodiment, the nitrogen seal assembly 4 comprises: the nitrogen pump 41, the first gate valve 411, the nitrogen storage tank 412, the pressure gauge 421 and the pipe body 42; the pipe body 42 is communicated with the ash conveying chute 3 and the blanking chute 6; the side wall of the pipe body 42 is communicated with a nitrogen storage tank 412 through a pipeline, a nitrogen pump 41 and an air valve are arranged on the communicating pipeline, so that air sealing of the converter body 5 is realized when nitrogen is conveyed to lower powder, gas in a furnace chamber in the converter smelting process is prevented from flowing backwards into a coarse ash converter feeding device, and the safety of the coarse ash converter feeding device and the surrounding environment in the converter smelting process is ensured.
In order to ensure the production safety during the gas filling, a pressure gauge 421 is arranged on the side wall of the pipe body 42, the pressure value in the pipe is read, and the gas filling amount is controlled according to the pressure value. When nitrogen is introduced, the tube 42 is closed, which can be achieved by a first gate valve 411 disposed on the top surface of the tube 42.
In one embodiment, the method comprises the following steps: a support frame 7; the coarse ash collecting tank 1 is erected to a predetermined height by a supporting frame 7.
In one embodiment, the coarse ash collection tank 1 is funnel-shaped, so that coarse ash in the coarse ash collection tank 1 enters the blanking cone 12. The pipe orifice of the ash conveying chute 3, which is provided with the nitrogen seal component 4, is connected to one end pipe orifice of a discharging chute 6 of the auxiliary material feeding system, and the other end pipe orifice of the discharging chute 6 is connected into a furnace chamber of the converter body 5. Through the nitrogen seal assembly 4, nitrogen seal protection can be carried out when coarse ash is added into the converter furnace chamber of the converter body 5, so that gas in the furnace chamber in the converter smelting process is prevented from flowing backwards into the coarse ash feeding device of the converter, and the safety of the coarse ash feeding device and the surrounding environment in the converter smelting process is ensured.
The feed inlet of the bucket elevator 21 is communicated with the cavity of the evaporative cooler of the converter body 5 through a bag-type dust remover 235, so that coarse ash is collected in the coarse ash collection tank 1 on line. The throughput of the bag-type dust collector 235 used can be adjusted according to the air quantity.
The supporting frame 7 is supported below the coarse ash collecting tank 1, and the coarse ash collecting tank I is fixed on the supporting frame 7.
The dry dedusting is used, so that the coarse ash of the converter is fed into the converter, the energy consumption caused by vehicle transportation is reduced, and the consumption of steel materials is reduced. The dust removal effect is obviously improved.
The device has the following use effect description:
1. after the coarse ash is put into the furnace, the initial slag formation of the converter is reduced from original 3 minutes and 30 seconds to the current 1 minute and 50 seconds, and the early dephosphorization efficiency is improved.
2. After the coarse ash is put into the furnace, the transportation cost of the tank car and the pollution of fuel oil to the atmosphere are reduced.
3. After the coarse ash is put into the furnace, the coarse ash contains a large amount of ferric oxide, so that the metal receiving rate is improved.
The crude ash composition used is as follows:
| converter dust | Ai 2 O 3 | CaO | MgO | MnO | P | S | SiO 2 | TFe |
| Coarse dust for steelmaking | 1.19 | 16.29 | 1.74 | 0.39 | 0.149 | 0.068 | 3.51 | 59.82 |
| Fine dust for steelmaking | 0.59 | 12.16 | 1.93 | 0.28 | 0.109 | 0.147 | 1.91 | 63.83 |
Economic benefit
1. Direct economic benefit:
1) As the early slag formation of the converter is early, the corrosion of the furnace lining is reduced, the dephosphorization is facilitated, and the quality of molten steel is improved.
2) The cost of tank truck transportation is reduced.
3) The coarse ash produced by each converter is about 500-700 kg, and the iron content is 59.82%, so that 255-357 kg of molten steel can be produced per steel per converter, and the price of the molten steel per converter is 3318 yuan/ton. The cost can be reduced by about 7 yuan/ton of steel. According to 5000t of daily steel production, the annual production day is 300 days, and the annual economic benefit is 1050 ten thousand yuan.
2. Indirect benefit: reducing the maintenance cost of furnace lining. The fuel consumption is reduced. And the metal receiving rate is improved.
Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.
Claims (6)
1. A converter coarse ash charging device, characterized by comprising: the device comprises a converter evaporative cooler, a bucket elevator, a coarse ash collecting tank, an ash conveying chute, a nitrogen sealing assembly and a blanking chute; the cavity of the converter evaporative cooler is communicated with a bucket elevator pipeline through a bag-type dust remover; the bucket elevator is arranged at one side of the coarse ash collection tank and is communicated with a feed inlet at the top of the coarse ash collection tank;
the coarse ash collecting tank is communicated with a feed inlet of the converter body through an ash conveying chute, a nitrogen sealing assembly and a blanking chute.
2. The converter coarse ash charging device according to claim 1, comprising: a gate valve; the gate valve is arranged on an interface of the coarse ash collection tank communicated with the ash conveying chute.
3. The converter coarse ash charging device according to claim 1, comprising: a material conveying pipe; the bucket elevator and the coarse ash collecting tank are communicated through a conveying pipe.
4. The converter coarse ash charging device according to claim 1, wherein a discharging cone is arranged on the bottom surface of the coarse ash collecting tank; and a gate valve is arranged on the bottom surface of the blanking cone.
5. The converter coarse ash charging apparatus of claim 1, wherein the nitrogen seal assembly comprises: the device comprises a nitrogen storage tank, a pipe body, a first gate valve and a pressure gauge; two ends of the pipe body are respectively communicated with a blanking chute and an ash conveying chute; a first gate valve is arranged in the tube body in a accommodated manner; the nitrogen storage tank and the pipe body are communicated through pipelines; the side wall of the pipe body is provided with a pressure gauge.
6. The converter coarse ash charging apparatus of claim 5, wherein the nitrogen seal assembly comprises: a nitrogen pump and an air valve; the nitrogen pump and the air valve are arranged on a pipeline which is communicated with the nitrogen storage tank and the pipeline at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322300361.5U CN220520538U (en) | 2023-08-25 | 2023-08-25 | Coarse ash feeding device for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322300361.5U CN220520538U (en) | 2023-08-25 | 2023-08-25 | Coarse ash feeding device for converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220520538U true CN220520538U (en) | 2024-02-23 |
Family
ID=89923025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322300361.5U Active CN220520538U (en) | 2023-08-25 | 2023-08-25 | Coarse ash feeding device for converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220520538U (en) |
-
2023
- 2023-08-25 CN CN202322300361.5U patent/CN220520538U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201485071U (en) | Pneumatic ash conveying system for blast furnace gas by dry dedusting method | |
| CN104561560B (en) | Copper ashes slow cooling handling process | |
| CN103194561B (en) | Device for directly adding sintering returned dust into ladle | |
| CN220520538U (en) | Coarse ash feeding device for converter | |
| CN101875988A (en) | Pressure-equalizing and discharging process for J-shaped sealing water pipe type blast furnace top | |
| CN214779271U (en) | High-order feed bin steel scrap adding system | |
| CN102277463A (en) | Reduction furnace and device for producing direct reduced iron | |
| CN103332458A (en) | Pneumatic conveying system for removing dust and fine ash in dry process of converter gas | |
| Maczek et al. | Recovery of zinc and lead from electric-furnace steelmaking dust at Berzelius | |
| CN203095975U (en) | Recycling device for dry-quenching secondary dust-removal coke powder | |
| CN202201915U (en) | Reduction furnace and directly reduced iron production device | |
| CN103332493A (en) | Pneumatic conveying method for removing dust and crude ash in dry process of converter gas | |
| CN114703332B (en) | System and method for preheating metallurgical furnace burden and slag treatment by utilizing high-temperature slag | |
| CN215506640U (en) | Material feeding mechanism for spheroidizing automobile axle castings | |
| CN217026012U (en) | Processing system of electric arc furnace steelmaking fly ash | |
| CN115303821A (en) | Semi coke end forming treatment system | |
| CN213010836U (en) | Finished pellet storage and temporary outward transportation device for pellets | |
| CN2170951Y (en) | Conveying device for puddling furnace material dust jetting | |
| CN104550892B (en) | It is applicable to the welding cinder ladle of copper ashes retarded cooling process | |
| CN201817500U (en) | 'J-shaped' sealing water pipe type blast furnace top pressure-equalizing bleeding device | |
| CN203320031U (en) | Short-process magnetic separation steel slag recovering device | |
| CN218026187U (en) | Converter dry dedusting coarse ash device for molten iron desulphurization | |
| CN214766274U (en) | Material water spray dust suppression device on car | |
| CN220624938U (en) | Ash conveying device for dust removal of sintering machine smoke circulation multi-pipe dust remover | |
| CN212418704U (en) | Filter equipment suitable for powder charge-in system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |