CN219995937U - Novel dust collecting system of ferromolybdenum smelting furnace - Google Patents
Novel dust collecting system of ferromolybdenum smelting furnace Download PDFInfo
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- CN219995937U CN219995937U CN202321099136.3U CN202321099136U CN219995937U CN 219995937 U CN219995937 U CN 219995937U CN 202321099136 U CN202321099136 U CN 202321099136U CN 219995937 U CN219995937 U CN 219995937U
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- 239000000428 dust Substances 0.000 title claims abstract description 63
- 238000003723 Smelting Methods 0.000 title claims abstract description 32
- 229910001309 Ferromolybdenum Inorganic materials 0.000 title claims abstract description 17
- 238000005507 spraying Methods 0.000 claims description 31
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000006477 desulfuration reaction Methods 0.000 claims description 27
- 230000023556 desulfurization Effects 0.000 claims description 27
- 230000018044 dehydration Effects 0.000 claims description 12
- 238000006297 dehydration reaction Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000007921 spray Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 239000002893 slag Substances 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims 4
- 239000007924 injection Substances 0.000 claims 4
- 239000002912 waste gas Substances 0.000 abstract description 19
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003546 flue gas Substances 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007664 blowing Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 239000000779 smoke Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000003009 desulfurizing effect Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 241000276425 Xiphophorus maculatus Species 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
A novel dust collecting system of ferromolybdenum smelting furnace includes: smelting furnace, dust collecting cover, wet processing apparatus, dry processing apparatus, pipeline A, pipeline B and pipeline C, the smelting furnace set up on the kiln car to remove on the rail through below kiln car, smelting furnace top be equipped with the dust collecting cover, the dust collecting cover wholly be the funnel-shaped structure of inversion, the dust collecting cover upper end is connected with pipeline A's one end, pipeline A other end be linked together with wet processing apparatus bottom, wet processing apparatus upper end be linked together with pipeline B's one end, pipeline B other end be linked together with dry processing apparatus's middle part, dry processing apparatus top be connected with pipeline C. The beneficial effects of the utility model are as follows: the wet dust removing device and the dry dust removing device are matched, so that the flue gas purifying effect is better; the dust and sulfur dioxide in the waste gas pollutants are effectively recovered, the dust removal effect is improved, the pollution is reduced, and the economic benefit is improved.
Description
Technical Field
The utility model belongs to the technical field of dust removal equipment, and particularly relates to a dust collection system of a novel ferromolybdenum smelting furnace.
Background
In the ferromolybdenum smelting process, the discharged waste gas pollutants mainly comprise smoke (dust) dust and sulfur dioxide gas. The ferromolybdenum smelting is characterized by high smelting temperature (more than 1500 ℃), large smoke quantity and short smoke discharging time; the flue gas temperature is higher; the main characteristic of the waste gas is that the concentration of smoke (powder) dust and sulfur dioxide gas is high, the emission concentration of sulfur dioxide gas is 10000-11500 mg/m in the usual case, and the concentration of smoke (powder) dust is 2400-2600 mg/m. At present, dust removal devices such as cyclone, washing and inertia are mainly adopted, but the effect is not ideal, and the smoke (powder) dust concentration and the emission of sulfur dioxide gas still exceed the standard by several times, so that the pollution control of a plurality of ferromolybdenum smelting enterprises is trapped. Therefore, a special dust removal system is necessary to recycle dust and sulfur dioxide gas in the flue gas, so that the dust removal effect is ensured, the pollution is reduced, and the economic benefit is improved.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to design a novel dust collection system of a ferromolybdenum smelting furnace, and aims to recover dust and sulfur dioxide in waste gas pollutants, improve the dust removal effect and reduce pollution.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: a novel dust collecting system of ferromolybdenum smelting furnace includes: smelting furnace, dust collecting cover, wet processing apparatus, dry processing apparatus, pipeline A, pipeline B and pipeline C, the smelting furnace set up on the kiln car to remove on the rail through below kiln car, smelting furnace top be equipped with the dust collecting cover, the dust collecting cover wholly be the funnel-shaped structure of inversion, the dust collecting cover upper end is connected with pipeline A's one end, pipeline A other end be linked together with wet processing apparatus bottom, wet processing apparatus upper end be linked together with pipeline B's one end, pipeline B other end be linked together with dry processing apparatus's middle part, dry processing apparatus top be connected with pipeline C.
The wet processing apparatus includes: jar body, top cap, guide plate A, guide plate B, desulfurization pond, one-level spraying mechanism, second grade spraying mechanism, condenser, dry layer and dehydration board, jar body wholly be cylindrical barrel structure, jar body upper portion is connected with the top cap, the top cap be the funnel-shaped structure of inversion, the top cap lower edge is matched with jar body upper edge and is even as an organic whole, jar internal bottom be equipped with the desulfurization pond, jar internal middle part interval is equipped with guide plate A and guide plate B, guide plate A and guide plate B between be equipped with one-level spraying mechanism, guide plate B top be equipped with second grade spraying mechanism, second grade spraying mechanism top be equipped with the condenser, the condenser wholly be cylindrical structure, its lateral wall cooperatees with jar internal wall, the condenser top is equipped with the dehydration board, the dehydration board be circular platy structure, its quantity is two, two dehydration board interval settings are equipped with the dry layer between two dehydration boards.
The air guide device is characterized in that the air guide plate A and the air guide plate B are of oval plate-shaped structures with notches at one ends, the air guide plate A and the air guide plate B are obliquely arranged, one ends with notches are in opposite directions, the oblique directions of the air guide plate A and the oblique directions of the air guide plate B are opposite, and one ends with notches of the air guide plate A and the air guide plate B are opposite to one ends below.
The primary spraying mechanism and the secondary spraying mechanism are composed of a guide pipe, a booster pump and a spray header, one end of the guide pipe of the primary spraying mechanism is connected with a desulfurization tank arranged in the tank body, and the other end of the guide pipe is connected with the spray header after passing through the booster pump; one end of a conduit of the secondary spraying mechanism is connected with a water source, and the other end of the conduit is connected with a spray header after passing through a booster pump.
An observation window A for observing the condition of the desulfurization pond is arranged in the middle of the outer wall of the tank body, and the observation window A is an openable glass sealing window; an observation window B for observing the condition of the drying layer is arranged at the upper part of the outer wall of the tank body, and the observation window B is a openable glass sealing window; the bottom of the outer wall of the tank body is provided with a blow-down hole which can be opened and closed.
The dry processing apparatus includes: the device comprises a bracket, a box body, an ash bin, a filter bag frame, filter bags, blowing pipes, electromagnetic pulse valves and slag discharging holes, wherein the box body is arranged above the bracket, the cross section of the box body is of a rectangular structure, the lower part of the box body is connected with the ash bin, the cross section of the ash bin is of an inverted isosceles triangle structure, the filter bag frame is arranged in the box body and is connected with the inner wall of the box body, a plurality of filter bags are arranged between the filter bag frames, a plurality of blowing pipes for reversely blowing compressed air to the filter bags are arranged above the filter bag frame, the main body of each blowing pipe is arranged in the box body, two ends of the main body penetrate through two sides of the box body, and one end of the main body is provided with the electromagnetic pulse valves; the lower part of the ash bin is provided with a slag discharging hole which is used for cleaning dust and can be opened and closed.
A fan A is arranged at the joint of the pipeline A and the wet treatment device; and a fan B is arranged at the joint of the pipeline C and the dry treatment device.
The beneficial effects of the utility model are as follows: the wet dust removing device and the dry dust removing device are matched, so that the flue gas purifying effect is better; the dust and sulfur dioxide in the waste gas pollutants are effectively recovered, the dust removal effect is improved, the pollution is reduced, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic top cross-sectional view of a dry processing apparatus.
In the figure: 1. smelting furnace, 2, kiln car, 3, rail, 4, dust collecting cover, 5, pipeline A,6, jar body, 7, top cap, 8, guide plate A,9, guide plate B,10, first-level spraying mechanism, 11, second-level spraying mechanism, 12, desulfurization pond, 13, condenser, 14, dewatering plate, 15, dry layer, 16, pipeline B,17, support, 18, box, 19, ash bin, 20, filter bag frame, 21, filter bag, 22, blowing pipe, 23, electromagnetic pulse valve, 24, pipeline C,25, fan A,26, fan B,27, observation window A,28, observation window B,29, blowdown hole, 30, slag hole.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is to be noted that the embodiments described are merely some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 and 2, a dust collecting system of a novel ferromolybdenum smelting furnace includes: smelting furnace 1, dust collecting cover 4, wet processing apparatus, dry processing apparatus, pipeline A5, pipeline B16 and pipeline C24, smelting furnace 1 set up on kiln car 2 to remove on rail 3 through below kiln car 2, smelting furnace 1 top be equipped with dust collecting cover 4, dust collecting cover 4 wholly be the funnel-shaped structure of inversion, dust collecting cover 4 upper end is connected with the one end of pipeline A5, pipeline A5 other end be linked together with wet processing apparatus bottom, wet processing apparatus upper end be linked together with the one end of pipeline B16, the other end of pipeline B16 be linked together with dry processing apparatus's middle part, dry processing apparatus top be connected with pipeline C24. The wet processing apparatus includes: tank body 6, top cap 7, guide plate A8, guide plate B9, desulfurization pond 12, one-level spraying mechanism 10, second grade spraying mechanism 11, condenser 13, dry layer 15 and dehydration board 14, tank body 6 wholly be cylindrical barrel structure, tank body 6 upper portion be connected with top cap 7, top cap 7 be the funnel-shaped structure of inversion, the top cap 7 lower edge and tank body 6 upper edge match and link as an organic whole, tank body 6 in the bottom be equipped with desulfurization pond 12, the middle part interval is equipped with guide plate A8 and guide plate B9 in the tank body 6, guide plate A8 and guide plate B9 between be equipped with one-level spraying mechanism 10, guide plate B9 top be equipped with second grade spraying mechanism 11, second grade spraying mechanism 11 top be equipped with condenser 13, condenser 13 wholly be cylindrical structure, its lateral wall cooperatees with tank body 6 inner wall, condenser 13 top is equipped with dehydration board 14, dehydration board 14 be circular structure, its quantity is two platy, two dehydration board 14 interval sets up and is equipped with between two drying layer 15. The air deflector A8 and the air deflector B9 are of oval plate-shaped structures with notches at one ends, the air deflector A8 and the air deflector B9 are obliquely arranged, one ends with notches are in opposite directions, the direction of the inclination of the air deflector A8 and the direction of the inclination of the air deflector B9 are opposite, and one ends with notches of the air deflector A8 and the air deflector B9 are all opposite lower ends. The primary spraying mechanism 10 and the secondary spraying mechanism 11 are composed of a guide pipe, a booster pump and a spray header, one end of the guide pipe of the primary spraying mechanism 10 is connected with a desulfurization tank 12 arranged in the tank body 6, and the other end of the guide pipe is connected with the spray header after passing through the booster pump; one end of a conduit of the secondary spraying mechanism 11 is connected with a water source, and the other end of the conduit is connected with a spray header after passing through a booster pump. An observation window A27 for observing the condition of the desulfurization tank 12 is arranged in the middle of the outer wall of the tank body 6, and the observation window A27 is a glass sealing window which can be opened and closed; an observation window B28 for observing the condition of the drying layer 15 is arranged at the upper part of the outer wall of the tank body 6, and the observation window B28 is a openable glass sealing window; the bottom of the outer wall of the tank body 6 is provided with a blow-down hole 29 which can be opened and closed. The dry processing apparatus includes: the device comprises a bracket 17, a box body 18, an ash bin 19, a filter bag frame 20, filter bags 21, blowing pipes 22, electromagnetic pulse valves 23 and slag discharging holes 30, wherein the ash bin 19 is arranged above the bracket 17, the cross section of the ash bin 19 is of an inverted isosceles triangle structure, the upper part of the ash bin 19 is connected with the box body 18, the cross section of the box body 18 is of a rectangular structure, the filter bag frame 20 is arranged in the box body 18 and is connected with the inner wall of the box body 18, a plurality of filter bags 21 are arranged between the filter bag frames 20, a plurality of blowing pipes 22 for reversely blowing compressed air to the filter bags 21 are arranged above the filter bag frame 20, the main body of each blowing pipe 22 is arranged in the box body 18, two ends of the blowing pipe penetrate through two sides of the box body 18, one end of the blowing pipe is provided with the electromagnetic pulse valve 23, and the electromagnetic pulse valve 23 is controlled by a program controller; the lower part of the ash bin 19 is provided with an openable slag discharging hole 30 for cleaning dust. A fan A25 is arranged at the joint of the pipeline A5 and the wet treatment device; and a fan B26 is arranged at the joint of the pipeline C24 and the dry treatment device.
The utility model is used when in use: under the action of a fan A25, dust-containing gas generated by a smelting furnace 1 is sucked into a desulfurization tank 12 at the bottom of a wet treatment device from a dust collection cover 4 through a pipeline A5, a desulfurizing agent is added into the desulfurization tank 12, and in the desulfurization process, flue gas enters the desulfurization tank 12, and acid gas is wetted by desulfurizing liquid to be trapped and reacted, so that the purpose of primary desulfurization is achieved; the purified waste gas flows from bottom to top and passes through the notch of the guide plate A8, and is mixed with vaporific desulfurization liquid sprayed by the primary spraying system 10 in a countercurrent manner when entering between the guide plate A8 and the guide plate B9, so that the aim of secondary desulfurization is fulfilled, the sprayed desulfurization liquid flows back into the desulfurization tank 12 through the guide plate A8, and after the purified waste gas continuously flows from bottom to top and passes through the notch of the guide plate B9 and then enters the upper part of the guide plate B9, the purified waste gas meets with purified water mist sprayed by the spray head of the secondary spraying system 11, so that the flue gas subjected to secondary desulfurization is purified, the notch of the guide plate A8 is arranged in a reverse manner with the notch of the guide plate B9, the waste gas flowing path is lengthened, the sprayed water mist is more convenient to mix with the vaporific liquid sprayed by the primary spraying mechanism 10 and the waste gas, and the sprayed water mist naturally settles into the guide plate B9 and flows into the desulfurization tank 12 after passing through the notch of the guide plate B9 and the notch of the guide plate A8; the desulfurized waste gas containing water vapor flows upwards, the temperature of the waste gas can be effectively reduced through the condenser 13 by using the condenser 13, most of the water vapor can be condensed and then drop down to the guide plate B9, the waste gas after passing through the condenser 13 upwards enters the drying layer 15 through the dewatering plate 14, the drying layer 15 is filled by drying balls, the drying balls are used for sucking water in the waste gas, a foundation is laid for the next step of entering the dry treatment device, the drying balls have a color changing function, and the waste gas is observed and replaced through the openable observation window B28; the observation window A27 is used for observing the condition of the desulfurization tank 12, and can be opened for adding a desulfurizing agent, so that wastewater and sediment in the desulfurization tank 12 can be cleaned regularly through the sewage draining holes 29; the waste gas after desulfurization and drying enters the top cover 7 upwards and enters the dry treatment device through the pipeline B16, the waste gas is filtered by the filter bag 21 under the action of the fan B26, dust is blocked on the surface of the filter bag 21, purified gas is discharged into the atmosphere through the pipeline C24, when the dust on the surface of the filter bag 21 is continuously increased, the program control instrument starts to work, the electromagnetic pulse valves 23 are opened one by one, compressed air is blown to clean the filter bag 21 through the blowing pipe 22, the filter bag 21 is suddenly expanded, dust attached to the surface of the filter bag is quickly separated from the filter bag 21 and falls into the dust bin 19 under the action of reverse airflow, the dust can be regularly cleaned through the slag discharging holes 30, the waste gas discharged into the atmosphere after dust removal of the wet and dry treatment device of the system reduces pollution, sulfur dioxide and dust in the waste gas are effectively controlled, and the requirement of environmental protection standard is met.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
The utility model is not described in detail in the prior art.
Claims (7)
1. A novel dust collecting system of ferromolybdenum smelting furnace includes: smelting furnace (1), dust collecting cover (4), wet processing apparatus, dry processing apparatus, pipeline A (5), pipeline B (16) and pipeline C (24), characterized by: smelting furnace (1) set up on kiln car (2) to move on rail (3) through below kiln car (2), smelting furnace (1) top be equipped with dust cap (4), dust cap (4) wholly be the funnel-shaped structure of inversion, dust cap (4) upper end is connected with the one end of pipeline A (5), pipeline A (5) other end be linked together with wet processing apparatus bottom, wet processing apparatus upper end link to each other with the one end of pipeline B (16), pipeline B (16) other end be linked together with dry processing apparatus's middle part, dry processing apparatus top be connected with pipeline C (24).
2. The dust collection system of the novel ferromolybdenum smelting furnace according to claim 1, which is characterized in that: the wet processing apparatus includes: tank body (6), top cap (7), guide plate A (8), guide plate B (9), desulfurization pond (12), one-level spraying mechanism (10), second grade spraying mechanism (11), condenser (13), dry layer (15) and dehydration board (14), tank body (6) wholly be cylindrical barrel structure, tank body (6) upper portion is connected with top cap (7), top cap (7) be the funnel-shaped structure of inversion, top cap (7) lower edge and tank body (6) are gone up along the cooperation and are linked as an organic wholely, tank body (6) in bottom be equipped with desulfurization pond (12), middle part interval is equipped with guide plate A (8) and guide plate B (9) in tank body (6), guide plate A (8) and guide plate B (9) between be equipped with one-level spraying mechanism (10), guide plate B (9) top be equipped with second grade spraying mechanism (11), second grade mechanism (11) top be equipped with condenser (13), condenser (13) wholly be cylindrical structure, its lateral wall (6) and two dehydration boards (14) are that are two are equipped with, two dehydration boards (14) are circular structures on the lateral wall (6), a drying layer (15) is arranged between the two dewatering plates (14).
3. The dust collection system of the novel ferromolybdenum smelting furnace according to claim 2, which is characterized in that: the air deflector A (8) and the air deflector B (9) are of oval plate-shaped structures with notches at one ends, the air deflector A (8) and the air deflector B (9) are obliquely arranged, one ends with notches are in opposite directions, the direction of the inclination of the air deflector A (8) and the direction of the inclination of the air deflector B (9) are opposite, and one ends with notches of the air deflector A (8) and the air deflector B (9) are opposite to one ends below.
4. The dust collection system of the novel ferromolybdenum smelting furnace according to claim 2, which is characterized in that: the primary spraying mechanism (10) and the secondary spraying mechanism (11) are composed of a guide pipe, a booster pump and a spray header, one end of the guide pipe of the primary spraying mechanism (10) is connected with a desulfurization tank (12) arranged in the tank body (6), and the other end of the guide pipe is connected with the spray header after passing through the booster pump; one end of a conduit of the secondary spraying mechanism (11) is connected with a water source, and the other end of the conduit is connected with a spray header after passing through a booster pump.
5. The dust collection system of the novel ferromolybdenum smelting furnace according to claim 2, which is characterized in that: an observation window A (27) for observing the condition of the desulfurization pond (12) is arranged in the middle of the outer wall of the tank body (6), and the observation window A (27) is an openable glass sealing window; an observation window B (28) for observing the condition of the drying layer (15) is arranged at the upper part of the outer wall of the tank body (6), and the observation window B (28) is an openable glass sealing window; the bottom of the outer wall of the tank body (6) is provided with a blow-down hole (29) which can be opened and closed.
6. The dust collection system of the novel ferromolybdenum smelting furnace according to claim 1, which is characterized in that: the dry processing apparatus includes: the device comprises a bracket (17), a box body (18), an ash bin (19), a filter bag frame (20), filter bags (21), injection pipes (22), electromagnetic pulse valves (23) and slag discharging holes (30), wherein the ash bin (19) is arranged above the bracket (17), the cross section of the ash bin (19) is of an inverted isosceles triangle structure, the upper part of the ash bin (19) is connected with the box body (18), the cross section of the box body (18) is of a rectangular structure, the filter bag frame (20) is arranged in the box body (18) and connected with the inner wall of the box body (18), a plurality of filter bags (21) are arranged between the filter bag frames (20), a plurality of injection pipes (22) for reversely injecting compressed air to the filter bags (21) are arranged above the filter bag frames (20), the main body of each injection pipe (22) is arranged in the box body (18), two ends of the box body penetrate through two sides of the box body (18), and one end of each injection pipe is provided with the electromagnetic pulse valve (23); the lower part of the ash bin (19) is provided with an openable slag discharging hole (30) for cleaning dust.
7. The dust collection system of the novel ferromolybdenum smelting furnace according to claim 1, which is characterized in that: a fan A (25) is arranged at the joint of the pipeline A (5) and the wet treatment device; a fan B (26) is arranged at the joint of the pipeline C (24) and the dry treatment device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321099136.3U CN219995937U (en) | 2023-05-09 | 2023-05-09 | Novel dust collecting system of ferromolybdenum smelting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321099136.3U CN219995937U (en) | 2023-05-09 | 2023-05-09 | Novel dust collecting system of ferromolybdenum smelting furnace |
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| Publication Number | Publication Date |
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| CN219995937U true CN219995937U (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321099136.3U Active CN219995937U (en) | 2023-05-09 | 2023-05-09 | Novel dust collecting system of ferromolybdenum smelting furnace |
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| Country | Link |
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| CN (1) | CN219995937U (en) |
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2023
- 2023-05-09 CN CN202321099136.3U patent/CN219995937U/en active Active
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