CN203494634U - Underground coal mine gangue discharging system using flowing current separation technology - Google Patents
Underground coal mine gangue discharging system using flowing current separation technology Download PDFInfo
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- CN203494634U CN203494634U CN201320596959.7U CN201320596959U CN203494634U CN 203494634 U CN203494634 U CN 203494634U CN 201320596959 U CN201320596959 U CN 201320596959U CN 203494634 U CN203494634 U CN 203494634U
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- 239000003245 coal Substances 0.000 title claims abstract description 82
- 238000000926 separation method Methods 0.000 title claims abstract description 48
- 238000005516 engineering process Methods 0.000 title abstract description 7
- 238000007599 discharging Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002699 waste material Substances 0.000 claims description 25
- 239000004575 stone Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012216 screening Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 9
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- 239000000463 material Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
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- 238000012423 maintenance Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000008235 industrial water Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
The utility model relates to an underground coal mine gangue discharging system using the flowing current separation technology. According to the technical scheme, a run-of-mine coal conveyor is installed on one side of the feeding end of a roller screen. The two ends of a plus screen selected feed coal conveyor are connected with a before-screening chute of the roller screen and a feeding port of a flowing current separation machine respectively. A lump coal outlet of the flowing current separation machine is connected with a dewatering screen. The oversize discharging end of the dewatering screen is sequentially connected with a lump coal conveyor, a lump coal transferring conveyor and a small conveyor. A high-frequency screen is installed in the middle of the lump coal conveyor. Backwater of the dewatering screen is connected with a concentration tank through a pipeline. The concentration tank is connected with the high-frequency screen through a concentration underflow pump. A gangue outlet of the flowing current separation machine is connected with a bucket elevator. The discharging end of the bucket elevator is connected with a gangue conveyor, a gangue transferring conveyor and a gangue warehousing conveyor in sequence. The backwater of the high-frequency screen and overflow of the concentrating tank are connected with a circulating water tank through a pipeline. The circulating water tank is connected with a water inlet of the flowing current separation machine through a circulating water pump and a pipeline. The underground coal mine gangue discharging system using the flowing current separation technology has the advantages that the creating technology is simple, the separation effect is good, power consumption is small, and operating cost is low.
Description
Technical field
The invention relates to the down-hole discharge refuse process system of a kind of coal mining (coal separation) industry, be specifically related to a kind of under coal mine by run-of-mine coal (ROM coal) sorting cleaned coal and spoil system.
Background technology
A large amount of visible refuse in the run-of-mine coal (ROM coal) of coal mining (not passing through the coal of any process), generally run-of-mine coal (ROM coal) is not treated is directly transported to ground by mine skip or rubber conveyer and carries out discharge refuse operation.First, produce a large amount of Gangues and be placed on ground formation " hillock ".According to interrelated data introduction: more than 1900 of the current big-and-middle-sized Gangue Hill in the whole nation, approximately there is the hillock of 10% left and right just in spontaneous combustion, the hillock of spontaneous combustion not only discharges a large amount of SO
2, CO, H
2the toxic and harmfuls such as S, destroy ecological environment, cause personnel poisoning or suffocate, and even bring out explosion accident.Secondly, if the spoil in this part run-of-mine coal (ROM coal) can be got rid of on the spot and is filled to goaf in down-hole, both can prevent or reduce land subsidence, reduce the damage of surface structures, down-hole adopts the coal-mining techniques such as gob side entry retaining to replace coal column simultaneously, can also improve the rate of extraction, realize and change coal with cash, reclaim to greatest extent useful resources.The 3rd, in underground coal streaming system, the transportation of spoil belongs to invalid transportation, and the invalid freight volume of this part can reduce the actual production capacity of mine greatly.With in run-of-mine coal (ROM coal)+50mm spoil content presses 10-15% and calculates, for the mine that is 5.0Mt/a for production capacity, the annual invalid freight volume that just has ten thousand tons of 50-75, be equivalent to a medium-sized ore deposit well yield, if this part spoil is emitted on to down-hole, just can how the Coal Transport (lifting) of ten thousand tons of 50-75 be arrived to ground.The benefit that increases enterprise reaches 2-3 hundred million more than.
At present domestic have dense-medium shallow-tank separator down-hole waste stone exhaust system, movable-sieve jig down-hole waste stone exhaust system and determine three kinds of sieve jig (single stage jigging machine) down-hole waste stone exhaust systems.Because of dense-medium shallow-tank waste stone exhaust system complex process, jigging machine waste stone exhaust system corollary equipment is many, and the bulky and power consumption of separator is large etc. is subject to certain limitation in the use.
Summary of the invention
In order to address the above problem, the invention provides waste stone exhaust system under the flowing current separation motor-pumped well that a kind of technique is simple, separating effect is better, power consumption is few, operation cost is low.
To achieve these goals, the technical scheme that the invention adopts is: waste stone exhaust system under flowing current separation technique coal mine, run-of-mine coal (ROM coal) conveyer is arranged on roller picker feeding end one side, on sieve, the two ends of selected feed coal conveyer connect respectively the charging aperture in roller picker oversize discharge end and flowing current separation machine stage casing, the lump coal outlet of flowing current separation machine is connected with dewatering screen, dewatering screen oversize discharge end connects lump coal conveyer successively, lump coal redoiming conveyor and the smalls conveyer that is installed on roller picker below, high-frequency screen is installed in the middle of lump coal conveyer, dewatering screen backwater is connected with concentration basin by the road, concentration basin is connected with high-frequency screen by concentrated underflow pump, the spoil outlet of flowing current separation machine is connected with bucket elevator, and the discharge end of bucket elevator connects waste conveyor, gangue reprint conveyer and the spoil conveyer that puts in storage successively, the backwater of high-frequency screen is connected with circulating water pool respectively by the road with concentration basin overflow, and circulating water pool is connected with the water inlet of flowing current separation machine with pipeline by water circulating pump.
Waste stone exhaust system under above-mentioned flowing current separation technique coal mine, is provided with adjustable plate and lower adjustable plate in described flowing current separation machine, on upper adjustable plate and lower adjustable plate, be respectively equipped with baffle plate.
The beneficial effect of the invention is:
1. improve production capacity and economic benefit.Adopt the invention directly in down-hole, on the spot spoil to be discharged and do not need to be transported to ground.As previously mentioned, if will transport spoil quantitative change for transportation coal amount (referring generally to vertical shaft hoisting amount or inclined shaft Belt Conveying amount), a medium-sized mine can increase production 500,000 tons of coals every year, at least increases income hundred million yuan of 2-3.
2. reduce kinetic energy consumption and cost of transportation, due to spoil gug not, can cancel invalid transportation, minimize transport costs, reduce cost of transportation.
3. protection of the environment and land resource.Spoil comes down-hole, can save Gangue and be placed on the place that ground takies, and avoids the environmental disaster of bringing because of ground spontaneous combus tion of waste heap.Spoil not gug fundamentally solves hillock occupation of land and destroys ecological environment problem, has huge social benefit.
4. effectively utilize discarded object changing waste into valuable.The spoil that down-hole is got rid of can be used as the backfill charges in goaf, and spoil can be at the reserved coal column of the replacements such as down-hole masonry wall, and spoil can be used as the aggregate of down-hole gunning concrete etc. after pulverizing, reduce sinking and drifting maintenance cost, accomplishes twice laid.
5. waste shaft retrofilling, prevent surface collapse, implementing the raw material of underground filling gathers materials on the spot in the rear spoil of choosing, waste filling is to goaf, can reduce the damage of above ground structure, the application of waste filling technology can solve " three times " (under building, under railway, under water body) difficult problem of exploitation, improves the rate of extraction and reclaims to greatest extent useful resources.
6. flowing current separation machine is without power, water be medium without adding dense media, operation post, without staff on duty, only needs an operator and on-the-spot tours of inspection personnel.
7. process system is simple, and power consumption is few, production cost is low, automaticity is high, reliable, easy to maintenance.
In the invention, be first flowing current separation machine to be applied to waste stone exhaust system under coal mine, filled up in the waste stone exhaust system of down-hole main separation process equipment without the blank of power; The simple structure of flowing current separation machine is more suitable for technology arrangement, equipment installation, production run and the regular maintenance in underworkings, can reach desirable separating effect.Separating density can reach 1.8g/cm
3, recovery efficiency 95% left and right, imperfection I value 0.12-0.16.
Accompanying drawing explanation
Fig. 1 is the general structure schematic diagram of the invention.
Fig. 2 is the A-A view of Fig. 1.
Fig. 3 is the B-B view of Fig. 1.
Fig. 4 is the C-C view of Fig. 1.
Fig. 5 is the D-D view of Fig. 1.
Fig. 6 is the structural representation of the invention flowing current separation machine.
Fig. 7 is process chart.
The specific embodiment
As shown in Fig. 1-6, a waste stone exhaust system under flowing current separation technique coal mine, comprises and on run-of-mine coal (ROM coal) conveyer (1), roller picker (2), flowing current separation machine (3), dewatering screen (4), bucket elevator (5), concentration basin (6), high-frequency screen (7), concentrated underflow pump (8), water circulating pump (9), circulating water pool (10), sieve, is selected in feed coal conveyer (11), lump coal conveyer (12), lump coal redoiming conveyor (13), smalls conveyer (14), waste conveyor (15), gangue reprint conveyer (16) and the spoil conveyer (17) that puts in storage.
Run-of-mine coal (ROM coal) conveyer (1) is arranged on roller picker (2) feeding end one side, on sieve, the two ends of selected feed coal conveyer (11) connect respectively the charging aperture (3-1) in roller picker (2) oversize discharge end and flowing current separation machine (3) stage casing, pan feeding is controlled feeding by the gate of drain hole and is entered flowing current separation machine (3), the lump coal outlet (3-2) of flowing current separation machine (3) is connected with dewatering screen (4), dewatering screen (4) oversize discharge end connects lump coal conveyer (12) successively, lump coal redoiming conveyor (13) and be installed on the smalls conveyer (14) of roller picker (2) below, high-frequency screen (7) is installed in the middle of lump coal conveyer (12), dewatering screen (4) backwater is connected with concentration basin (6) by the road, concentration basin (6) is connected with high-frequency screen (7) by concentrated underflow pump (8), the spoil outlet (3-3) of flowing current separation machine (3) is connected with bucket elevator (5), and the discharge end of bucket elevator (5) connects waste conveyor (15), gangue reprint conveyer (16) and the spoil conveyer (17) that puts in storage successively, the backwater of high-frequency screen (7) is connected with circulating water pool (10) respectively by the road with concentration basin (6) overflow, and circulating water pool (10) is connected with the water inlet (3-4) of flowing current separation machine (3) with pipeline by water circulating pump (9).
In described flowing current separation machine (3), be provided with adjustable plate (3-5) and lower adjustable plate (3-6), on upper adjustable plate (3-5) and lower adjustable plate (3-6), be respectively equipped with baffle plate (3-7).
The operation principle of the invention is: the invention is arranged in each several part in underworkings from top to bottom successively according to coal stream.Technological process as shown in Figure 7.
1) screening: run-of-mine coal (ROM coal) is transported to roller picker (2) (sieve aperture is that 13-200mm is optional) through run-of-mine coal (ROM coal) conveyer (1) upper, carries out screening operation.Sifting out the material that is less than sieve aperture enters on smalls conveyer (14).
2) sorting: the oversize on roller picker (2), through sieving upper selected feed coal conveyer (11) and charging aperture (3-1) enters in flowing current separation machine (3), carries out separation operation.Water circulating pump (9) feeds water water from the water inlet (3-4) of the cell body bottom of flowing current separation machine (3) with certain pressure and flow in flowing current separation machine, sorted materials enters from the charging aperture (3-1) at cell body middle part, under reverse ascending current effect, particle motion depends on the rate of climb of current and the decrease speed of particle.The particle decrease speed that density is large is greater than the rate of climb of current, so sedimentation is downwards got rid of by bucket elevator (5).The particle decrease speed that density is little is less than the rate of climb of current, and result is held up on current direction, from upper mass coal export (3-2), discharges.
The cell body section of flowing current separation machine (3) is that rectangle inclination installation (being 48 °-52 ° with level) integral plate is welded, and is divided into upper, middle and lower segment, also referred to as light product section, pan feeding section and heavy product section.In the cell body of upper and lower side, respectively establish one with the adjustable plate of some baffle plates (3-7), the position of every adjustable plate can be adjusted by governor motion (handwheel) according to technological requirement.The length of cell body depends primarily on effective separation length, is generally 5m left and right, enters the ascending current pressure 50-70kpa of flowing current separation machine, and coal per ton needs recirculated water 4-6m
3.
3) product: the particle that density is little is held up on current direction, from upper mass coal export (3-2), discharge and enter dewatering screen (4) dehydration, on-the-sieve material enters lump coal transporter (12), via lump coal redoiming conveyor (13), send into smalls conveyer (14) upper, promote (transportation) to ground after being transported to Bunker together with the screenings of roller picker (2).
The backwater of dewatering screen (4) (doped with part coal slime), enter by the road concentration basin (6), after precipitation, the concentrated coal slime in bottom is squeezed into the further dehydration of high-frequency screen (7) through concentrated underflow pump (8) and is reclaimed, and oversize is finally sent on smalls conveyer (14).
4) de-spoil: in flowing current separation machine (3), the large particle of density moves downward, from spoil outlet (3-3) enters bucket elevator (5) dehydration, be promoted to waste conveyor (15), through gangue reprint conveyer (16), sending into spoil puts in storage on conveyer (17), be transported to downhole gangue storehouse, as the filler of underground goaf or the material of other purposes.
5) at roller picker (2) feeding end place, bypass is set, when the invention flowing current separation machine waste stone exhaust system breaks down, run-of-mine coal (ROM coal), guarantees normally to produce under coal mine directly from bypass transportation without washing discharge refuse.
6) utilization of recirculated water: the overflow water of high-frequency screen backwater and concentration basin enters circulating water pool (10), by water circulating pump (9), will there is the feedwater of certain pressure and flow to squeeze into flowing current separation machine as coal washing industrial water from water inlet (3-4), whole discharge refuse process system is realized closed water circuit, coal slime reclaims (letting out) washing industrial water that do not outflow in system, economizes on resources.
Claims (2)
1. waste stone exhaust system under flowing current separation technique coal mine, it is characterized in that: run-of-mine coal (ROM coal) conveyer (1) is arranged on roller picker (2) feeding end one side, on sieve, the two ends of selected feed coal conveyer (11) connect respectively the charging aperture (3-1) in roller picker (2) oversize discharge end and flowing current separation machine (3) stage casing, the lump coal outlet (3-2) of flowing current separation machine (3) is connected with dewatering screen (4), dewatering screen (4) oversize discharge end connects lump coal conveyer (12) successively, lump coal redoiming conveyor (13) and be installed on the smalls conveyer (14) of roller picker (2) below, high-frequency screen (7) is installed in the middle of lump coal conveyer (12), dewatering screen (4) backwater is connected with concentration basin (6) by the road, concentration basin (6) is connected with high-frequency screen (7) by concentrated underflow pump (8), the spoil outlet (3-3) of flowing current separation machine (3) is connected with bucket elevator (5), and the discharge end of bucket elevator (5) connects waste conveyor (15), gangue reprint conveyer (16) and the spoil conveyer (17) that puts in storage successively, the backwater of high-frequency screen (7) is connected with circulating water pool (10) respectively by the road with concentration basin (6) overflow, and circulating water pool (10) is connected with the water inlet (3-4) of flowing current separation machine (3) with pipeline by water circulating pump (9).
2. waste stone exhaust system under flowing current separation technique coal mine as claimed in claim 1, it is characterized in that: in described flowing current separation machine (3), be provided with adjustable plate (3-5) and lower adjustable plate (3-6), on upper adjustable plate (3-5) and lower adjustable plate (3-6), be respectively equipped with baffle plate (3-7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320596959.7U CN203494634U (en) | 2013-09-26 | 2013-09-26 | Underground coal mine gangue discharging system using flowing current separation technology |
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|---|---|---|---|
| CN201320596959.7U CN203494634U (en) | 2013-09-26 | 2013-09-26 | Underground coal mine gangue discharging system using flowing current separation technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480482A (en) * | 2013-09-26 | 2014-01-01 | 王迪业 | Flowing current separation process coal mine underground gangue dumping system |
| CN107020201A (en) * | 2017-06-14 | 2017-08-08 | 淮南矿业(集团)有限责任公司 | A kind of thickener underflow coarse slime recovery system |
| CN107127051A (en) * | 2017-05-16 | 2017-09-05 | 中煤能源研究院有限责任公司 | A kind of underground coal separation production method and system |
-
2013
- 2013-09-26 CN CN201320596959.7U patent/CN203494634U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480482A (en) * | 2013-09-26 | 2014-01-01 | 王迪业 | Flowing current separation process coal mine underground gangue dumping system |
| CN103480482B (en) * | 2013-09-26 | 2015-06-17 | 沈阳科迪通达工程技术有限公司 | Flowing current separation process coal mine underground gangue dumping system |
| CN107127051A (en) * | 2017-05-16 | 2017-09-05 | 中煤能源研究院有限责任公司 | A kind of underground coal separation production method and system |
| CN107020201A (en) * | 2017-06-14 | 2017-08-08 | 淮南矿业(集团)有限责任公司 | A kind of thickener underflow coarse slime recovery system |
| CN107020201B (en) * | 2017-06-14 | 2023-07-25 | 淮南矿业(集团)有限责任公司 | Thickener underflow coarse slime recovery system |
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Owner name: SHENYANG KEDITONG ENGINEERING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WANG DIYE Effective date: 20140725 |
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Effective date of registration: 20140725 Address after: 110000, 5-9-3, Washington building, 9 solidarity Road, Shenhe District, Liaoning, Shenyang Patentee after: Shenyang Keditong Engineering Technology Co., Ltd. Address before: 110000, 5-9-3, Washington building, 9 solidarity Road, Shenhe District, Liaoning, Shenyang Patentee before: Wang Diye |
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