CN108397224B - Dirty wind purification treatment system of broken region of ore deposit swift current - Google Patents
Dirty wind purification treatment system of broken region of ore deposit swift current Download PDFInfo
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- CN108397224B CN108397224B CN201810236346.XA CN201810236346A CN108397224B CN 108397224 B CN108397224 B CN 108397224B CN 201810236346 A CN201810236346 A CN 201810236346A CN 108397224 B CN108397224 B CN 108397224B
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- 238000000746 purification Methods 0.000 title claims description 26
- 239000003570 air Substances 0.000 claims description 182
- 238000004140 cleaning Methods 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000012080 ambient air Substances 0.000 claims description 9
- 230000001442 anti-mosquito Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000010865 sewage Substances 0.000 claims description 7
- 238000005065 mining Methods 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 description 5
- 238000004887 air purification Methods 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 3
- 241000255925 Diptera Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The utility model provides a swift current broken region's dirty wind purification treatment system in ore deposit, includes the second return air courtyard that upwards extends to the chamber from swift current broken region, and the chamber is formed from the side extension of purifying the horizontal tunnel, and purifying the horizontal tunnel is higher than the height in return air horizontal tunnel be provided with air purification device in the chamber, air purification device includes first air purifier, air purification passageway, pipeline fan, and purifying the horizontal tunnel and passing through pipeline fan and purifying the air passageway intercommunication, and air purification passageway includes first air outlet, and the dirty wind in swift current region gets into the chamber along the second return air courtyard, gets into after the filtration purification of first air purifier and purifies the air purification passageway, and follow first air outlet discharges, is carried in the horizontal tunnel of purifying by pipeline fan. The invention only needs to drive the depth from the breaking area to the purification horizontal tunnel provided with the air purification device, thereby saving the cost and increasing the ventilation air quantity of other working surfaces.
Description
Technical Field
The invention relates to the field of mining, in particular to a sewage wind purifying treatment system for an in-mine sliding-breaking area.
Background
At present, the air purification of a sliding region in a mine is mainly solved by ventilation of a system, and the air containing dust is discharged by pressing in fresh air, so that the aim of purifying the air of a working face is fulfilled, the fresh air becomes dirty air after passing through the working face, and the dirty air is required to be discharged to the ground surface through a return air courtyard. For example, as shown in fig. 1, a schematic diagram of a ventilation system of a mine (only development projects related to air intake and return in a breaking area are shown in the drawing, and complete system air paths are not shown), -420m is a broken horizontal tunnel, -460m is a belt horizontal tunnel, -540m is a powder ore cleaning horizontal tunnel, +40m is a return air horizontal tunnel, fresh air passes through the horizontal tunnels downwards from a secondary well in the arrow direction to become dirty air, and is discharged to the return air horizontal tunnel of +40m through a first return air patio 100 (shown by a bold solid line in fig. 1), and the return air horizontal tunnel discharges the dirty air to the ground through a return air general well. However, the exhausted dirty air is returned to the ground and requires further purification to be exhausted, and the cost of digging a return air patio extending up to the return air level tunnel is also required. There is no better solution to these problems at the present stage.
Disclosure of Invention
In order to solve the problems, the invention provides a sewage wind purifying treatment system for an in-mine breaking area, which is used for purifying and reutilizing sewage wind discharged from the breaking area.
The utility model provides a swift current broken regional dirty wind purification treatment system in ore deposit, includes follow swift current broken regional second return air courtyard that upwards extends to the chamber, the chamber is the side extension formation of follow purification level tunnel, purification level tunnel is higher than return air level tunnel be provided with air purification device in the chamber, air purification device includes first air purifier, purification air passageway, pipeline fan, purification level tunnel passes through pipeline fan and purification air passageway intercommunication, purification air passageway includes first air outlet, and the dirty wind in swift current broken region gets into the chamber along the second return air courtyard, gets into purification air passageway after the filtration of first air purifier is purified to follow first air outlet discharges, is carried to in the purification level tunnel by the pipeline fan.
Preferably, the air purifying device further comprises a control terminal, a gas detector, a first shutter, a second shutter and a second air purifier, wherein the first shutter is arranged on the first air outlet, the purified air channel further comprises a second air outlet, the second shutter and the second air purifier are sequentially arranged on the second air outlet, and the gas detector is connected with the control terminal, wherein the gas detector detects that the purified air reaches the requirement of ambient air, the control terminal controls to open the first shutter and close the second shutter, the purified air is discharged through the first air outlet of the purified air channel and is sent to the purification level roadway by the pipeline fan, the gas detector detects that the purified air does not reach the requirement of ambient air, the control terminal controls to close the first shutter and open the second shutter, the purified air is filtered and purified again by the second air purifier, and the purified secondary purified air is discharged through the second air outlet of the purified air channel and is sent to the purification level roadway by the pipeline fan.
Preferably, the purification level roadway is a drainage level roadway.
Preferably, the pipeline fan comprises an anti-mosquito net arranged at an air inlet of the pipeline fan, a fan and a louver air inlet arranged at an air outlet of the pipeline fan.
Preferably, the air cleaning device further comprises a water inlet provided on the purified air passage for cleaning the filter screens of the first air cleaner and the second air cleaner.
Preferably, a first reducing pipe is connected between the anti-mosquito net and the fan, and the diameter of the first reducing pipe gradually reduces from the anti-mosquito net to the direction of the fan.
Preferably, the duct fan is further provided with a compensator to absorb vibration.
Preferably, the compensator is arranged between the fan and the louver air port, a second reducing pipe is connected between the compensator and the louver air port, one end of the second reducing pipe connected with the compensator is of a circular section, and one end of the second reducing pipe connected with the louver air port is of a square section.
Compared with the prior art, the invention has the following beneficial effects:
(1) Compared with the prior art that the return air courtyard is required to be excavated from the sliding and breaking area to the return air horizontal tunnel, the invention only needs to excavate the tunneling depth from the sliding and breaking area to the purification horizontal tunnel provided with the air purification device, thereby saving the cost to a great extent.
(2) The ventilation air quantity of other working surfaces can be increased by utilizing the air discharged and purified by the sliding region, so that the ventilation system is optimized, and the cost is saved.
(3) Through adding air detector and second air purifier, can ensure that the air after the purification can reach the ambient air requirement.
Drawings
The above-mentioned features and technical advantages of the present invention will become more apparent and readily appreciated from the following description of the embodiments thereof, taken in conjunction with the accompanying drawings.
FIG. 1 is a view of a prior art dirty air return system for an in-mine fracking area;
FIG. 2 is a diagram of a system for purifying a contaminated air in a mine to illustrate an in-mine break zone in accordance with an embodiment of the present invention;
FIG. 3 is a schematic plan view of a chamber having a first air cleaner in accordance with an embodiment of the present invention;
FIG. 4 is a schematic plan view of a chamber having a first air cleaner and a second air cleaner in accordance with an embodiment of the present invention;
FIG. 5 is a B-B cross-sectional view of FIG. 4;
FIG. 6 is a plan view of a filter assembly of the air purifier;
fig. 7 is a cross-sectional view taken along A-A of fig. 4.
Detailed Description
Embodiments of a sewage wind purification treatment system for an in-mine break-through region according to the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope. Furthermore, in the present specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
A sewage wind purifying treatment system of a mining breaking area comprises a second return air courtyard 200 (shown by a thick solid line in fig. 2) arranged between the breaking area and a purifying horizontal roadway above the breaking area. As shown in fig. 2, a chamber 300 (which is a horizontal tunnel of relatively large cross-section and relatively short length without passing through the surface exit) extends horizontally from the sides of the purged horizontal tunnel, as shown by the area surrounded by the thick solid lines in fig. 3 and 4. The secondary return air courtyard 200 extends upwardly from the break-away area into communication with the chamber. And an air purifying device is arranged in the chamber. The air purifying device comprises a first air purifier 1, a pipeline fan 3 and a purified air channel 4. The purification horizontal roadway is communicated with the purification air channel through a pipeline fan 3, and the purification air channel 4 comprises a first air outlet. The pipeline fan 3 comprises a fan 13, an anti-mosquito net 11 arranged at an air inlet of the fan 13 and a louver air inlet 16 arranged at an air outlet of the fan 13, and the pipeline fan 3 is used for sending fresh air into all communicated tunnels. Fresh air enters the burst area from the secondary well to become dirty air, which enters the clean horizontal tunnel from the burst area along the secondary return air patio 200. As shown in fig. 3, the polluted air is filtered and purified by the first air purifier 1 to be purified air, the purified air enters the purified air channel 4 along the arrow direction, is discharged from the first air outlet of the purified air channel 4 to reach the pipeline fan 3, and is sent to the purification horizontal roadway by the pipeline fan 3 for use.
In an alternative embodiment, as shown in fig. 4, the air cleaning apparatus further comprises a control terminal, a gas detector 2, a first louver 5, a second louver 6, and a second air cleaner 7. The gas detector 2 is connected with a control terminal, and the closing of the shutter 5 and the shutter 6 is controlled according to the monitoring signal. The clean air channel 4 is also provided with a second air outlet. And, the second air cleaner 7 and the second louver are sequentially installed on the second air outlet. And the first louver 5 is installed on the first air outlet. The processed air is detected by the gas detector 2 to determine whether the air can be utilized, if the air meets the requirement of the ambient air, the first louver 5 is controlled to be opened and the second louver 6 is controlled to be closed, purified air is sent to all communicated roadways for utilization by the pipeline fans 3 through the purified air channels 4, if the air does not meet the requirement of the ambient air, the first louver 5 is automatically closed, the second louver 6 is opened, the air continues to be filtered and purified by the second air purifier 7, and the purified secondary purified air is sent to the purification level roadway for utilization by the pipeline fans 3.
In an alternative embodiment, as shown in fig. 4, to ensure the cleanliness of the air cleaning device, the air cleaning device further comprises a water inlet 8 provided on the clean air channel 4. The water inlet 8 can continuously spray water to clean the filter screens of the first air purifier 1 and the second air purifier 7, and dust on the filter screens is discharged to a drainage ditch in a roadway after being cleaned by water.
In an alternative embodiment, as shown in fig. 7, the first reducing pipe 12 is used to connect the mosquito net 11 and the blower 13, and the diameter of the first reducing pipe 12 gradually decreases from the mosquito net 11 to the blower 13.
In an alternative embodiment, as shown in fig. 7, the pipeline fan 3 is further provided with a compensator 14 for absorbing vibration, reducing the influence of vibration on the pipeline, and compensating the axial, transverse and angular cold and heat deformation of the absorption pipeline.
In an alternative embodiment, as shown in FIG. 7, a second reducer pipe 15 is used to connect the compensator 14 and the louvres 16. One end of the second reducer pipe 15 has a circular cross section, and the other end has a square cross section.
The following is a specific example. As shown in FIG. 2, -420m is a broken horizontal roadway, -460m is a belt horizontal roadway, -540m is a fine ore cleaning horizontal roadway. And arranging a second return air courtyard 200 between the breaking area and the-360 m drainage horizontal roadway, namely, the second return air courtyard 200 extends upwards from the-540 m fine ore cleaning horizontal roadway to the-360 m drainage horizontal roadway. And discharging the sewage wind in the breaking area to a drainage horizontal roadway of-360 m. And a chamber with the width of 5m and the length of 16m is increased at one side of the drainage horizontal tunnel with the length of-360 m, and the height of the chamber is the same as that of the drainage horizontal tunnel. As shown in fig. 2, the second return air patio 200 in fig. 2 only needs to be driven from a-540 m fine ore cleaning horizontal roadway to a-360 m drainage horizontal roadway, with a driving distance of 180m. Whereas the first return air patio 100 in fig. 1 is a return air horizontal tunnel from-540 m of fine ore cleaning horizontal tunnel to +40m, and the tunneling distance is 580m. In comparison, the second return air patio 200 has a 400m reduced tunneling length compared to the first return air patio 100.
As shown in fig. 3, the polluted air discharged from the breaking area is discharged to the drainage horizontal tunnel of-360 m through the second return air patio 200, and then the polluted air is purified by the first air purifier 1. The first air purifier 1 and the second air purifier 7 are 14m×2.2m, and as shown in fig. 5, the filtering surfaces thereof include not less than 100 filter elements 9. As shown in fig. 6, each filter element 9 has a size of 0.55m by 0.046m, and the filter elements are assembled by rivets 10 to form a filter surface.
The first louver 5 has a size of 2.2×2.405m, and the second louver 6 has a size of 14m×2.2m. The processed air is detected by the gas detector 2 to determine whether the air can be utilized, if the air meets the requirement of the ambient air, the first louver 5 is controlled to be opened, the second louver 6 is controlled to be closed, fresh air is sent to a drainage horizontal roadway of-360 m by the pipeline fan 3 through the purified air channel 4 to be utilized, if the air does not meet the requirement of the ambient air, the first louver 5 is automatically closed, the second louver 6 is opened, the air continues to be filtered and purified by the second air purifier 7, and the purified secondary purified air is sent to the drainage horizontal roadway of-360 m by the pipeline fan 3 to be utilized. The total ventilation quantity can reach 20m 3 And/s. A ladder compartment is installed in the second return air courtyard 200 as a second safety exit for the break-away area.
To ensure the cleaning of the air cleaner, the water inlet 8 is continuously sprayed with water for cleaning.
The model 3 of the pipeline fan is DTF-I-13, and the wind speed is 75536m 3 And/h, two pipeline fans work simultaneously, the total length of one pipeline fan is 5.4m, and vibration and heat can be generated when the fans run due to the difference of the sizes in the width direction, so as to be shown in the figure, a first reducer pipe 12 is adopted at the joint of the pipeline fans, the first reducer pipe 12 is connected with an anti-mosquito net 11 and a fan 13, the diameter of the anti-mosquito net 11 is 2.25m, the diameter of the fan 13 is 1.968m, and the diameters of two ends of the first reducer pipe 12 are 2.250m and 1.968m respectively.
To dampen vibrations, a compensator 14 is installed between the fan 13 and the louvered air 16. The compensator 14 and the louver 16 are connected by the second reducer pipe 15, and the louver 16 has a size of 3m, so that the second reducer pipe 15 has a circular shape with a diameter of 1.968m and a square shape with a side length of 3m at both ends.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A sewage wind purifying treatment system of an in-mine breaking area is characterized by comprising a second return air courtyard extending upwards from the breaking area to a chamber, wherein the chamber is formed by extending from the side surface of a purifying horizontal roadway,
the purifying horizontal tunnel is lower than the air return horizontal tunnel in height, an air purifying device is arranged in the chamber and comprises a first air purifier, a purifying air channel and a pipeline fan, the purifying horizontal tunnel is communicated with the purifying air channel through the pipeline fan, the purifying air channel comprises a first air outlet,
the polluted air in the sliding breaking area enters the chamber along the second return air courtyard, enters the purified air channel after being filtered and purified by the first air purifier, is discharged from the first air outlet and is conveyed into the purifying horizontal tunnel by the pipeline fan,
the air purifying device also comprises a control terminal, a gas detector, a first shutter, a second shutter and a second air purifier,
the first shutter is arranged on the first air outlet, the purified air channel further comprises a second air outlet, the second shutter and the second air purifier are sequentially arranged on the second air outlet, the gas detector is connected with the control terminal,
wherein, when the gas detector detects that the purified air meets the requirement of the ambient air, the control terminal controls the first shutter to be opened and the second shutter to be closed, the purified air is discharged through the first air outlet of the purified air channel and is sent to the purification horizontal roadway by the pipeline fan,
the gas detector detects that the purified air does not meet the requirement of ambient air, the control terminal controls the first shutter to be closed and the second shutter to be opened, the purified air is filtered and purified again through the second air purifier, and the purified secondary purified air is discharged through the second air outlet of the purified air channel and is sent to the purification horizontal roadway through the pipeline fan.
2. The system for purifying and treating the polluted air in the mining area according to claim 1, wherein,
the purification horizontal roadway is a drainage horizontal roadway.
3. The system for purifying and treating the polluted air in the mining area according to claim 1, wherein,
the pipeline fan comprises an anti-mosquito net arranged at an air inlet of the pipeline fan, a fan and a shutter air inlet arranged at an air outlet of the pipeline fan.
4. The system of claim 2, wherein the air cleaning device further comprises a water inlet provided in the clean air channel for cleaning the screens of the first air cleaner and the second air cleaner.
5. The system for purifying and treating the polluted air in the mining area according to claim 3, wherein a first reducing pipe is connected between the anti-mosquito net and the fan, and the diameter of the first reducing pipe gradually decreases from the anti-mosquito net to the fan.
6. A system for purifying a contaminated air in a mine fracking area according to claim 3, wherein the duct fan is further provided with a compensator to absorb vibration.
7. The system for purifying the polluted air in the mining area according to claim 6, wherein the compensator is arranged between the fan and the louver, a second reducer pipe is connected between the compensator and the louver, one end of the second reducer pipe connected with the compensator is of a circular section, and one end of the second reducer pipe connected with the louver is of a square section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810236346.XA CN108397224B (en) | 2018-03-21 | 2018-03-21 | Dirty wind purification treatment system of broken region of ore deposit swift current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810236346.XA CN108397224B (en) | 2018-03-21 | 2018-03-21 | Dirty wind purification treatment system of broken region of ore deposit swift current |
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| Publication Number | Publication Date |
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| CN108397224A CN108397224A (en) | 2018-08-14 |
| CN108397224B true CN108397224B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810236346.XA Active CN108397224B (en) | 2018-03-21 | 2018-03-21 | Dirty wind purification treatment system of broken region of ore deposit swift current |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112412518B (en) * | 2020-10-16 | 2023-06-09 | 湖南长院悦诚装备有限公司 | Tunnel face circulation air supply system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1087518A (en) * | 1977-02-14 | 1980-10-14 | Eugene A. Mills | Gas withdrawal from an in situ oil shale retort |
| CN102477868A (en) * | 2010-11-22 | 2012-05-30 | 大连兆阳软件科技有限公司 | Drilling dustproof equipment for underground coal bed of coal mine |
| CN203201579U (en) * | 2013-03-01 | 2013-09-18 | 玉溪大红山矿业有限公司 | Efficient ventilation structure suitable for slope mine channel |
| CN203441516U (en) * | 2013-05-10 | 2014-02-19 | 玉溪大红山矿业有限公司 | Ventilation structure of sliding and blasting system and capable of effectively removing dust and cooling |
| CN106837405A (en) * | 2017-03-13 | 2017-06-13 | 中钢集团马鞍山矿山研究院有限公司 | A kind of underground mine returnairshaft dirt wind demisting dust falling system |
| CN208024388U (en) * | 2018-03-21 | 2018-10-30 | 中冶北方（大连）工程技术有限公司 | The waste air cleaning treatment system in region is slipped brokenly in a kind of mine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2856435A1 (en) * | 2014-07-10 | 2016-01-10 | Cementation Canada Inc. | Hydraulic hoisting system and method |
-
2018
- 2018-03-21 CN CN201810236346.XA patent/CN108397224B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1087518A (en) * | 1977-02-14 | 1980-10-14 | Eugene A. Mills | Gas withdrawal from an in situ oil shale retort |
| CN102477868A (en) * | 2010-11-22 | 2012-05-30 | 大连兆阳软件科技有限公司 | Drilling dustproof equipment for underground coal bed of coal mine |
| CN203201579U (en) * | 2013-03-01 | 2013-09-18 | 玉溪大红山矿业有限公司 | Efficient ventilation structure suitable for slope mine channel |
| CN203441516U (en) * | 2013-05-10 | 2014-02-19 | 玉溪大红山矿业有限公司 | Ventilation structure of sliding and blasting system and capable of effectively removing dust and cooling |
| CN106837405A (en) * | 2017-03-13 | 2017-06-13 | 中钢集团马鞍山矿山研究院有限公司 | A kind of underground mine returnairshaft dirt wind demisting dust falling system |
| CN208024388U (en) * | 2018-03-21 | 2018-10-30 | 中冶北方（大连）工程技术有限公司 | The waste air cleaning treatment system in region is slipped brokenly in a kind of mine |
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| CN108397224A (en) | 2018-08-14 |
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