CN220643164U - Blast furnace feeding system utilizing old ore coke tank - Google Patents
Blast furnace feeding system utilizing old ore coke tank Download PDFInfo
- Publication number
- CN220643164U CN220643164U CN202321973417.7U CN202321973417U CN220643164U CN 220643164 U CN220643164 U CN 220643164U CN 202321973417 U CN202321973417 U CN 202321973417U CN 220643164 U CN220643164 U CN 220643164U
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- coke
- ore
- blast furnace
- belt conveyor
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- 239000000571 coke Substances 0.000 title claims abstract description 242
- 238000004064 recycling Methods 0.000 claims abstract description 14
- 238000005303 weighing Methods 0.000 claims description 61
- 239000000463 material Substances 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 4
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 7
- 238000011084 recovery Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 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
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- Blast Furnaces (AREA)
Abstract
A blast furnace charging system utilizing an old ore coke tank relates to the field of feeding devices. The blast furnace charging system of the utilized old ore coke tank comprises a blast furnace centralized transfer station, at least two utilized old ore coke tanks, a coke supply belt conveyor and an ore supply belt conveyor; a feeding device is arranged in the blast furnace centralized transfer station; the utilized ore coke tank comprises an ore tank body and a coke tank body, wherein an ore hopper, an ore vibrating screen positioned below the ore hopper and a return ore belt conveyor for receiving undersize of the ore vibrating screen are arranged at the bottom of the ore tank body; the bottom of the coke tank body is provided with a coke hopper, a coke vibrating screen positioned below the coke hopper and a crushed coke belt conveyor for receiving undersize of the coke vibrating screen, and the ore feeding belt conveyor and the coke feeding belt conveyor are respectively used for conveying oversize of each ore vibrating screen and the coke vibrating screen to the feeding device for receiving. The blast furnace charging system utilizing the old ore coke tank is used for storing and conveying ores and coke when the blast furnace is overhauled and replaced, and has the advantages of short construction period, resource recycling, low investment and small occupied area.
Description
Technical Field
The application relates to the field of feeding devices, in particular to a blast furnace feeding system utilizing an old ore coke tank.
Background
The ore coke tank is a part of a raw material system of the blast furnace smelting equipment, and is responsible for storing, batching, screening and weighing various ores and cokes required by the blast furnace smelting, and sending the ores and the cokes to a skip car and a main leather car for storing the ores and the cokes.
When the blast furnace is overhauled and replaced, the ore coke tank of the old blast furnace needs to be removed and the ore coke tank of the new blast furnace needs to be newly set, so that the construction period is long, the resource waste is caused, and the problems of high investment and large occupied area are solved.
Disclosure of Invention
The utility model aims to provide a blast furnace charging system utilizing an old ore coke tank, which is used for storing and conveying ores and cokes by utilizing the old ore coke tank during the major repair and the replacement of the blast furnace and has the advantages of short construction period, resource recycling, low investment and small occupied area.
The application is realized in such a way that:
the application provides a blast furnace feeding system of an utilized old ore coke tank, which comprises a blast furnace centralized transfer station, at least two utilized old ore coke tanks, a coke supply belt conveyor and an ore supply belt conveyor; a feeding device is arranged in the blast furnace centralized transfer station and is used for receiving coke and ore conveyed by the coke supply belt conveyor and the ore supply belt conveyor and conveying the coke and ore to the blast furnace; the ore feeding belt conveyor is used for conveying oversize products of the ore vibrating screens of each of the utilized ore coke tanks to the feeding device for receiving; the bottom of the coke tank body is provided with a coke hopper, a coke vibrating screen positioned below the coke hopper and a crushed coke belt conveyor for receiving undersize of the coke vibrating screen, and the coke supply belt conveyor is used for conveying oversize of each coke vibrating screen to the feeding device for receiving.
In some alternative embodiments, the feeding device comprises an inclined bridge with one end extending out of the blast furnace centralized transfer station, a blast furnace double skip arranged on the inclined bridge, a skip winch for driving the blast furnace double skip to move along the inclined bridge, two ore centralized weighing hoppers for weighing ore and conveying the ore to the blast furnace double skip, two coke centralized weighing hoppers for weighing coke and conveying the coke to the blast furnace double skip, an ore three-way distributor for uniformly distributing the ore to the two ore centralized weighing hoppers and a coke three-way distributor for uniformly distributing the coke to the two coke centralized weighing hoppers; the coke supply belt conveyor is used for conveying the coke in each utilized ore coke tank to the coke three-way distributor for receiving, and the ore supply belt conveyor is used for conveying the ore in each utilized ore coke tank to the ore three-way distributor for receiving.
In some alternative embodiments, the charging device comprises a charging belt conveyor for conveying materials to the blast furnace, an ore concentration weighing hopper for receiving ore conveyed by the ore supply belt conveyor and weighing and then conveying the ore to the charging belt conveyor, and a coke concentration weighing hopper for receiving coke conveyed by the coke supply belt conveyor and weighing and then conveying the coke to the charging belt conveyor.
In some alternative embodiments, the apparatus further comprises a diced coke recycling station into which one end of the diced coke conveyor extends.
In some alternative embodiments, a coke oven vibrating screen for receiving and screening the materials conveyed by the crushed coke conveyor is arranged in the coke oven recycling station, and one end of the ore feeding belt conveyor extends to the oversize product received by the coke oven vibrating screen in the coke oven recycling station.
In some alternative embodiments, each of the utilized ore coke tanks shares a return ore belt conveyor.
In some alternative embodiments, the blast furnace centralized transfer station is disposed above ground, below ground, or semi-below ground.
The beneficial effects of this application are: the blast furnace feeding system of the utilized ore coke tank comprises a blast furnace centralized transfer station, at least two utilized ore coke tanks, a coke supply belt conveyor and an ore supply belt conveyor; a feeding device is arranged in the blast furnace centralized transfer station and is used for receiving coke and ore conveyed by the coke supply belt conveyor and the ore supply belt conveyor and conveying the coke and ore to the blast furnace; the ore feeding belt conveyor is used for conveying oversize products of the ore vibrating screens of each of the utilized ore coke tanks to the feeding device for receiving; the bottom of the coke tank body is provided with a coke hopper, a coke vibrating screen positioned below the coke hopper and a crushed coke belt conveyor for receiving undersize of the coke vibrating screen, and the coke supply belt conveyor is used for conveying oversize of each coke vibrating screen to the feeding device for receiving. The blast furnace feeding system utilizing the old ore coke tank provided by the application stores and conveys ores and cokes by utilizing the old ore coke tank when the blast furnace is overhauled and replaced, the old ore coke tank does not need to be dismantled, a new ore coke tank does not need to be newly built, and the blast furnace feeding system has the advantages of short construction period, resource recycling, low investment and small occupied area.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic plan view of a blast furnace charging system for an utilized old ore coke tank according to embodiment 1 of the present application;
FIG. 2 is a cross-sectional view taken along section line A-A of FIG. 1;
fig. 3 is a schematic plan view of a blast furnace charging system for an utilized old ore coke tank according to embodiment 2 of the present application;
fig. 4 is a cross-sectional view taken along section line B-B of fig. 3.
In the figure: 100. a blast furnace centralized transfer station; 110. an inclined bridge; 120. blast furnace double skip; 130. a skip hoist; 140. Ore centralized weighing hopper; 150. Coke centralized weighing hopper; 160. an ore three-way distributor; 170. A coke three-way distributor; 180. A feeding belt conveyor; 200. an old ore coke tank is utilized; 210. a mine trough body; 220. a coke oven body; 230. an ore hopper; 240. an ore vibrating screen; 250. a return ore belt conveyor; 260. a coke hopper; 270. a coke vibrating screen; 280. a coke crushing belt conveyor; 300. a coke supply belt conveyor; 400. a mineral feeding belt conveyor; 500. a diced coke recycling station; 510. a coke oven vibrating screen.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are 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 present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships that are conventionally put in use of the product of the application, are merely for convenience of description of the present application and simplification of description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The characteristics and properties of the blast furnace charging system of the utilized coke breeze tank of the present application are described in further detail below in connection with the examples.
Example 1
As shown in fig. 1 and 2, the present application provides a blast furnace charging system of an utilized ore coke tank, which comprises a blast furnace centralized transfer station 100, two utilized ore coke tanks 200, a coke feeding belt conveyor 300, an ore feeding belt conveyor 400 and a coke recycling station 500 which are arranged on the ground, wherein the blast furnace centralized transfer station 100, the two utilized ore coke tanks 200 and the coke recycling station 500 are sequentially arranged along a linear direction;
wherein, a feeding device is arranged in the blast furnace centralized transfer station 100 and is used for receiving coke and ore conveyed by the coke-feeding belt conveyor 300 and the ore-feeding belt conveyor 400 and conveying the coke and the ore to the blast furnace, the feeding device comprises a feeding belt conveyor 180, an ore centralized weighing hopper 140 and a coke centralized weighing hopper 150, the ore centralized weighing hopper 140 is used for receiving and conveying the ore conveyed by the ore-feeding belt conveyor 400 and weighing the ore and then conveying the ore to the feeding belt conveyor 180, and the coke centralized weighing hopper 150 is used for receiving and conveying the coke conveyed by the coke-feeding belt conveyor 300 and weighing the coke and then conveying the coke to the feeding belt conveyor 180; a feeding belt conveyor driving device for driving the feeding belt conveyor 180 to operate is arranged in the blast furnace centralized transfer station 100, and gates capable of being opened and closed are respectively arranged at the bottoms of the ore centralized weighing hopper 140 and the coke centralized weighing hopper 150.
Each of the utilized ore coke tanks 200 comprises an ore tank body 210 and a coke tank body 220 which are arranged in parallel, wherein an ore hopper 230, an ore vibrating screen 240 positioned below the ore hopper 230 and a return ore belt conveyor 250 for receiving undersize of the ore vibrating screen 240 are arranged at the bottom of the ore tank body 210, and the ore belt conveyor 400 is used for conveying oversize of the ore vibrating screen 240 of each utilized ore coke tank 200 to the ore concentration weighing hopper 140 for receiving; the bottom of the coke tank body 220 is provided with a coke hopper 260, a coke vibrating screen 270 positioned below the coke hopper 260 and a crushed coke belt conveyor 280 for receiving undersize materials of the coke vibrating screen 270, and the coke supply belt conveyor 300 is used for conveying oversize materials of the coke vibrating screen 270 of each utilized coke tank 200 to a feeding device for receiving; a feeding belt conveyor driving device for driving the feeding belt conveyor 400 to operate is arranged in the blast furnace centralized transfer station 100, and a coke feeding belt conveyor driving device for driving the coke feeding belt conveyor 300 to operate is arranged outside the blast furnace centralized transfer station 100.
One end of the crushed coke belt conveyor 280 extends into the crushed coke recycling station 500, a crushed coke vibrating screen 510 for receiving and screening materials conveyed by the crushed coke belt conveyor 280 is arranged in the crushed coke recycling station 500, one end of the ore feeding belt conveyor 400 extends into a screen-upper object of the crushed coke belt conveyor 280 received in the crushed coke recycling station 500, and each utilized ore coke tank 200 shares one ore returning belt conveyor 250.
According to the blast furnace charging system for the utilized old ore coke tank, the utilized old ore coke tank 200 of two old blast furnaces is transformed during blast furnace overhaul and generation, and the blast furnace centralized transfer station 100 and the coke butyl recovery station 500 are arranged to be matched with the utilized old ore coke tank 200 for ore and coke storage and conveying, so that the utilized old utilized ore coke tank 200 is utilized for ore and coke storage and conveying of a new blast furnace, and the old ore coke tank is not required to be removed and a new ore coke tank is not required to be built.
Specifically, by controlling the ores in the ore tank bodies 210 of the two old and used ore coke tanks 200 to fall into the corresponding ore hoppers 230 and flow down onto the ore vibrating screen 240 for screening, qualified granularity ores on the ore vibrating screen 240 are received by the same ore feeding belt conveyor 400 and conveyed to the ore centralized weighing hopper 140 in the blast furnace centralized transfer station 100 for weighing, the ore centralized weighing hopper 140 opens a valve at the bottom after weighing ores with preset weight, so that the ores fall onto the feeding belt conveyor 180 and are conveyed to the top of the blast furnace, and the ores screened by the ore vibrating screen 240 fall onto the same ore returning belt conveyor 250 for centralized processing; simultaneously, the coke in the coke drum bodies 220 of the two old and used ore coke drums 200 is controlled to fall into the corresponding coke hoppers 260 and flow down onto the coke vibrating screens 270 for screening, and qualified granularity coke on the two coke vibrating screens 270 is received by the same coke supply belt conveyor 300 and conveyed to the coke centralized weighing hopper 150 in the blast furnace centralized transfer station 100 for weighing, the coke centralized weighing hopper 150 opens a valve at the bottom after weighing the coke with preset weight, the coke falls onto the feeding belt conveyor 180 for conveying to the top of the blast furnace, and the coke from the two coke vibrating screens 270 falls onto the same crushing belt conveyor 280 for conveying to the coke butyl vibrating screen 510 in the coke butyl recovery station 500 for screening, and qualified coke on the coke butyl vibrating screen 510 falls onto the ore centralized weighing hopper 140 and is conveyed to the top of the blast furnace through the feeding belt conveyor 180, so that ore and coke are stored, screened and conveyed into the blast furnace centralized weighing hopper 100 by the two old ore drums 210, and the coke is conveyed to the blast furnace centralized weighing hopper 100 through the ore centralized weighing hopper 180, and the coke centralized weighing hopper system is moved to the blast furnace 150 after passing through the ore weighing hopper 180.
The crushed coke belt conveyor 280 is used for collecting the coke screened by the coke vibrating screen 270 to the coke butyl vibrating screen 510 in the coke butyl recovery station 500 for screening treatment, and the qualified coke screened by the coke butyl vibrating screen 510 is recovered in the ore feeding belt conveyor 400 and conveyed into the blast furnace centralized transfer station 100 for use, so that the coke with qualified granularity can be effectively recovered and used.
Example 2
As shown in fig. 3 and 4, the embodiment of the present application provides a blast furnace charging system for an utilized coke tank, which is substantially the same as the structure of the blast furnace charging system for the utilized coke tank provided in embodiment 1, except that in the present embodiment, the charging device includes an inclined bridge 110 having one end extended out of the blast furnace centralized transfer station 100, a blast furnace double skip 120 provided on the inclined bridge 110, a skip hoist 130 for driving the blast furnace double skip 120 to move along the inclined bridge 110, two ore centralized weighing hoppers 140 for weighing ore and delivering to the blast furnace double skip 120, two coke centralized weighing hoppers 150 for weighing coke and delivering to the blast furnace double skip 120, an ore three-way distributor 160 for equally dividing ore to the two ore centralized weighing hoppers 140, and a coke three-way distributor 170 for equally dividing coke to the two coke centralized weighing hoppers 150, and the blast furnace double skip 120 includes two charging trolleys; the coke feed belt 300 is used for conveying the coke in each of the utilized ore coke tanks 200 to the coke three-way distributor 170 for receiving, and the ore feed belt 400 is used for conveying the ore in each of the utilized ore coke tanks 200 to the ore three-way distributor 160 for receiving.
In the blast furnace charging system for the old ore coke tank provided in this embodiment, a skip hoist 130 is disposed in the blast furnace centralized transfer station 100 to drive the blast furnace double skip 120 to move ore and coke charging operation, so that the ore feeding belt conveyor 400 receives the screened ore of the two old ore coke tanks 200 and conveys the screened ore to the ore tee distributor 160 in the blast furnace centralized transfer station 100 for receiving, the ore tee distributor 160 uniformly distributes the received ore to the two ore centralized weighing hoppers 140 for weighing respectively, the two ore centralized weighing hoppers 140 open valves at bottoms after weighing the ore with preset weight to enable the ore to fall into the two charging trolleys of the blast furnace double skip 120 respectively, and meanwhile, the coke feeding belt conveyor 300 receives the screened coke of the two old ore coke tanks 200 and conveys the screened coke to the coke tee distributor 170 in the blast furnace centralized transfer station 100 for receiving, the coke tee distributor 170 uniformly distributes the received coke to the two coke centralized weighing hoppers 150 for weighing, and the two coke centralized weighing hoppers 150 open valves at bottoms after weighing the coke with preset weight to enable the two ore centralized weighing hoppers to fall into the two charging trolleys of the blast furnace double skip 120 respectively, and then the coke double skip 120 can be driven to move to the blast furnace double skip 120.
The embodiments described above are some, but not all, of the embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Claims (7)
1. The blast furnace charging system of the utilized ore coke tank is characterized by comprising a blast furnace centralized transfer station, at least two utilized ore coke tanks, a coke supply belt conveyor and an ore supply belt conveyor; a feeding device is arranged in the blast furnace centralized transfer station and is used for receiving coke and ore conveyed by the coke supply belt conveyor and the ore supply belt conveyor and conveying the coke and ore to the blast furnace; the ore feeding belt conveyor is used for conveying oversize products of the ore vibrating screens of each of the utilized old ore coke tanks to the feeding device for receiving; the coke tank body bottom is equipped with the coke hopper, is located coke shale shaker of coke hopper below and be used for receiving coke shale shaker screen lower thing's crushed coke belt feeder, supply the burnt belt feeder to be used for each coke shale shaker's oversize thing is carried to loading attachment receives.
2. The blast furnace charging system of an utilized coke chute according to claim 1, wherein said charging device comprises an inclined bridge with one end extending out of said blast furnace centralized transfer station, a blast furnace double car arranged on said inclined bridge, a car hoist for driving said blast furnace double car to move along said inclined bridge, two ore centralized weighing hoppers for weighing ore and delivering to said blast furnace double car, two coke centralized weighing hoppers for weighing coke and delivering to said blast furnace double car, an ore three-way distributor for equally dividing ore to both said ore centralized weighing hoppers, and a coke three-way distributor for equally dividing coke to both said coke centralized weighing hoppers; the coke supply belt conveyor is used for conveying the coke in each utilized old ore coke tank to the coke three-way distributor for receiving, and the ore supply belt conveyor is used for conveying the ore in each utilized old ore coke tank to the ore three-way distributor for receiving.
3. The blast furnace charging system of an utilized ore coke chute according to claim 1, wherein the charging device comprises a charging belt conveyor for conveying materials to the blast furnace, an ore centralized weighing hopper for receiving ore conveyed by the ore supply belt conveyor and weighing and then conveying to the charging belt conveyor, and a coke centralized weighing hopper for receiving coke conveyed by the coke supply belt conveyor and weighing and then conveying to the charging belt conveyor.
4. The blast furnace charging system of an utilized ore coke chute according to claim 1, further comprising a coke breeze recycle bin, wherein one end of the crushed coke conveyor extends into the coke breeze recycle bin.
5. The blast furnace charging system of the utilized old ore coke tank according to claim 4, wherein a coke breeze vibrating screen for receiving and screening the crushed coke conveyor conveying materials is arranged in the coke breeze recycling station, and one end of the ore feeding belt conveyor extends to a screen surface material for receiving the coke breeze vibrating screen in the coke breeze recycling station.
6. The blast furnace charging system for an utilized ore coke tank according to claim 1, wherein each utilized ore coke tank shares one of said return belt conveyors.
7. The blast furnace charging system of an utilized ore coke chute according to claim 1, wherein the blast furnace centralized transfer station is disposed above ground, below ground or semi-below ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321973417.7U CN220643164U (en) | 2023-07-25 | 2023-07-25 | Blast furnace feeding system utilizing old ore coke tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321973417.7U CN220643164U (en) | 2023-07-25 | 2023-07-25 | Blast furnace feeding system utilizing old ore coke tank |
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| Publication Number | Publication Date |
|---|---|
| CN220643164U true CN220643164U (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321973417.7U Active CN220643164U (en) | 2023-07-25 | 2023-07-25 | Blast furnace feeding system utilizing old ore coke tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220643164U (en) |
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2023
- 2023-07-25 CN CN202321973417.7U patent/CN220643164U/en active Active
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