CN222174394U - A thermal coal wet slime processing system - Google Patents
A thermal coal wet slime processing system Download PDFInfo
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- CN222174394U CN222174394U CN202420247394.XU CN202420247394U CN222174394U CN 222174394 U CN222174394 U CN 222174394U CN 202420247394 U CN202420247394 U CN 202420247394U CN 222174394 U CN222174394 U CN 222174394U
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- flotation
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- coal
- feed inlet
- coal slime
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- 239000003245 coal Substances 0.000 title claims abstract description 59
- 238000005188 flotation Methods 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000002562 thickening agent Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 230000004048 modification Effects 0.000 claims description 10
- 238000012986 modification Methods 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 10
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000000706 filtrate Substances 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000005496 tempering Methods 0.000 abstract description 2
- 239000003250 coal slurry Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000008396 flotation agent Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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Abstract
The utility model discloses a power coal wet coal slime treatment system which comprises a hydrocyclone, an arc screen, a centrifuge, a buffer box, a surface modifying machine, a flotation feeding tank, a primary flotation machine, an ultrahigh pressure filter press, a secondary flotation machine, a thickener and a slurry mixing tank; the utility model has the advantages that the wet coal slime of the power coal can be reused after being treated by the hydrocyclone, the arc screen and the centrifuge, the liquid separated by the hydrocyclone, the arc screen and the centrifuge can be used for obtaining the flotation clean coal through tempering, flotation and filter pressing, the clean coal can be mixed into the clean coal for sale or be directly sold separately, the filter press filtrate and the thickener overflow are used as the subsequent circulating water for continuous use, the waste of water resources is reduced, the flotation tailings are concentrated and then are pumped into a slurry mixing tank in a gangue separation layer grouting system, and the separation layer space above an underground goaf and below a main key layer is filled by using a downhole filling technology, so that the wet coal slime is finally and effectively utilized, and the wet coal slime is not discharged.
Description
Technical field:
The utility model relates to the technical field of wet coal slime treatment, in particular to a power coal wet coal slime treatment system.
The background technology is as follows:
Wet coal slime is usually produced after washing and selecting the power coal, and is difficult to sell due to high moisture and low heat productivity of the wet coal slime and low price of the wet coal slime. The coal can be directly sold when the market of the coal is good, and the wet coal slime can not be sold when the market is bad.
Meanwhile, the wet coal slime is difficult to settle and the moisture is difficult to remove, if the wet coal slime is used as circulating water, the problem of too high content of the coal slime in the circulating water exists, so that the sorting operation is influenced, and the normal operation of a production process system of a coal preparation plant is further influenced; meanwhile, the coal slime in the circulating water is not effectively utilized, and most of the coal slime is treated in a discharging mode.
Therefore, a treatment scheme that can effectively utilize wet coal slurry is required.
The utility model comprises the following steps:
the utility model aims to provide a power coal wet coal slime treatment system for solving the problems in the background technology.
The utility model is implemented by the following technical scheme:
A power coal wet coal slime treatment system comprises a hydrocyclone, an arc screen, a centrifuge, a buffer tank, a surface modifying machine, a flotation feeding tank, a primary flotation machine, an ultra-high pressure filter press, a secondary flotation machine, a thickener and a slurry mixing tank;
The overflow port of the hydrocyclone, the undersize water outlet of the sieve and the water outlet of the centrifuge are respectively communicated with a buffer box through pipelines, the buffer box is fixedly arranged above the feed port of the surface modifying machine, the discharge port of the surface modifying machine is communicated with a flotation feeding pool, the flotation feeding pool is communicated with the feed port of a first section of flotation machine through a pulp pump, the foam outlet of the first section of flotation machine is communicated with the feed port of the ultrahigh pressure filter press, the tailing drain port of the first section of flotation machine is communicated with the feed port of a second section of flotation machine, the foam outlet of the second section of flotation machine is communicated with the feed port of the ultrahigh pressure filter press, the tailing drain port of the second section of flotation machine is communicated with the feed port of the concentrating machine, and the discharge port of the concentrating machine is communicated with the pulp mixing pool.
Preferably, the bottom of the buffer tank is provided with an electric gate which is just above the feed inlet of the surface modifying machine.
Preferably, the overflow port of the ultra-high pressure filter press is communicated with the circulating water system through a pipeline.
Preferably, the overflow port of the thickener is communicated with the circulating water system through a pipeline.
Preferably, a stirring device is arranged in the size mixing tank.
The method has the advantages that the wet coal slime of the power coal can be reused after being treated by the hydrocyclone, the arc screen and the centrifugal machine, the separated liquid of the hydrocyclone, the arc screen and the centrifugal machine can be subjected to tempering, secondary flotation and filter pressing to obtain the flotation clean coal, the flotation clean coal can be blended into the clean coal for sale or be directly and independently sold, the filter press filtrate and the overflow of the concentrator are used as the subsequent circulating water for continuous use, the waste of water resources is reduced, the flotation tailings are concentrated and then are pumped into a slurry mixing tank in a gangue separation layer grouting system, the underground filling technology is utilized to fill a separation layer space above an underground goaf and below a main key layer, so that the wet coal slime is finally and effectively utilized, and the wet coal slime is not discharged.
Description of the drawings:
fig. 1 is a system connection diagram of the present utility model.
In the figure, 1, a hydrocyclone, 2, an arc screen, 3, a centrifuge, 4, a buffer box, 5, a surface modifying machine, 6, a flotation feeding tank, 7, a primary flotation machine, 8, an ultra-high pressure filter press, 9, a secondary flotation machine, 10, a thickener, 11 and a pulp mixing tank.
The specific embodiment is as follows:
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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, the utility model provides a technical scheme of a power coal wet coal slurry treatment system, which comprises the following steps:
A power coal wet coal slime treatment system comprises a hydrocyclone 1, an arc screen 2, a centrifuge 3, a buffer tank 4, a surface modifying machine 5, a flotation feeding tank 6, a primary flotation machine 7, an ultrahigh pressure filter press 8, a secondary flotation machine 9, a thickener 10 and a slurry mixing tank 11;
The bottom flow port of the hydrocyclone 1 is communicated with the feed inlet of the sieve bend 2, the discharge port of the oversize material of the sieve bend 2 is communicated with the feed inlet of the centrifuge 3, the overflow port of the hydrocyclone 1, the undersize water outlet of the sieve bend 2 and the water outlet of the centrifuge 3 are respectively communicated with the buffer tank 4 through pipelines, the buffer tank 4 is fixedly arranged above the feed inlet of the surface modification machine 5, the discharge port of the surface modification machine 5 is communicated with the flotation feeding pool 6, the flotation feeding pool 6 is communicated with the feed inlet of the first stage flotation machine 7 through a pulp pump, the foam outlet of the first stage flotation machine 7 is communicated with the feed inlet of the ultra-high pressure filter 8, the tailing liquid outlet of the first stage flotation machine 7 is communicated with the feed inlet of the second stage flotation machine 9, the foam outlet of the second stage flotation machine 9 is communicated with the feed inlet of the ultra-high pressure filter 8, the tailing liquid outlet of the second stage flotation machine 9 is communicated with the feed inlet of the thickener 10, the discharge port of the thickener 10 is communicated with the pulp mixing pool 11, and a stirring device is arranged in the pulp mixing pool 11.
The bottom of the buffer tank 4 is provided with an electric gate which is just above the feed inlet of the surface modifying machine 5.
And an overflow port of the ultra-high pressure filter press 8 is communicated with a circulating water system through a pipeline. The overflow port of the thickener 10 is communicated with the circulating water system through a pipeline, filtrate of the filter press and overflow of the thickener are used as subsequent circulating water for continuous use, and waste of water resources is reduced.
The working principle is that wet coal slime of a power coal separation plant is classified by a hydrocyclone 1, underflow classified by the hydrocyclone 1 is screened by an arc screen 2, and oversize materials of the arc screen 2 enter a centrifuge 3 to be subjected to centrifugal dehydration continuously, so that a coarse coal slime product is obtained after dehydration.
Meanwhile, overflow water of the hydrocyclone 1, undersize water of the arc screen 2 and centrifugal liquid separated by the centrifugal machine 3 flow into the buffer tank 4 through pipelines respectively, liquid flows into the surface modification machine 5 through opening an electric gate at the bottom of the buffer tank 4, flotation agents are added into the surface modification machine 5, some substances in the liquid are subjected to surface adsorption through the agents under the action of the flotation agents, the hydrophobicity difference among minerals is increased, the floatability of minerals is improved, the liquid in the surface modification machine 5 is enabled to be quickly flocculated and suspended, flocculated liquid in the surface modification machine 5 is led into the flotation feed pool 6 through a pulp suction pump, flocculated liquid in the flotation feed pool 6 is sucked into the primary flotation machine 7 through a pulp suction pump, secondary flotation is carried out through the secondary flotation machine 9, the cleaned coal selected by the primary flotation machine 7 and the secondary flotation machine 9 enters the ultra-high pressure filter press 8, the cleaned coal is finally mixed into the fine coal to be sold or directly and independently sold, the flocculated bottom flow in the primary flotation machine 7 and the secondary flotation machine 9 enters the bottom flow suction pump to be concentrated and pumped into the bottom flow layer 11, the bottom flow is pumped into the bottom flow mixing pool, and the bottom flow is pumped into the bottom flow mixing pool 11 to be more in the bottom of the coal layer, and the bottom mixing pool is pumped into the bottom of the slurry mixing pool by the key system, and the bottom flow mixing pool is pumped into the bottom of the slurry mixing pool 11.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (5)
1. The power coal wet coal slime treatment system is characterized by comprising a hydrocyclone (1), an arc screen (2), a centrifuge (3), a buffer tank (4), a surface modifying machine (5), a flotation feeding tank (6), a primary flotation machine (7), an ultra-high pressure filter press (8), a secondary flotation machine (9), a thickener (10) and a slurry mixing tank (11);
The utility model provides a flotation device, including sieve, sieve inlet, buffer tank (4), surface modification machine (5), sieve inlet and flotation pan feeding pond (6) intercommunication, sieve inlet and the feed inlet intercommunication of first section flotation machine (7) of sieve (2), overflow mouth, sieve outlet and the delivery port of centrifuge (3) of sieve (1) are respectively through pipeline and buffer tank (4) intercommunication, buffer tank (4) are fixed to be set up in the feed inlet top of surface modification machine (5), the feed inlet intercommunication of surface modification machine (5) and flotation pan feeding pond (6), flotation pan feeding pond (6) is through the feed inlet intercommunication of pulp pump with first section flotation machine (7), the foam outlet of first section flotation machine (7) with the feed inlet intercommunication of ultra-high pressure filter press (8), the tailing fluid-discharge opening of first section flotation machine (7) with the feed inlet intercommunication of second section flotation machine (9), the foam outlet of second section flotation machine (9) with the feed inlet intercommunication of ultra-high pressure filter press (8), the fluid-discharge opening of second section flotation machine (10) and concentration machine (10) intercommunication.
2. The system for treating the wet coal slime of the power coal, as claimed in claim 1, is characterized in that an electric gate is arranged at the bottom of the buffer box (4) and is just above a feed inlet of the surface modifying machine (5).
3. The system for treating the wet coal slime of the power coal, as claimed in claim 1, wherein the overflow port of the ultra-high pressure filter press (8) is communicated with a circulating water system through a pipeline.
4. The system for treating wet coal slime of power coal according to claim 1, wherein the overflow port of the concentrator (10) is communicated with the circulating water system through a pipeline.
5. The system for treating the wet coal slime of the power coal, as claimed in claim 1, wherein a stirring device is arranged in the slurry mixing tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420247394.XU CN222174394U (en) | 2024-01-30 | 2024-01-30 | A thermal coal wet slime processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420247394.XU CN222174394U (en) | 2024-01-30 | 2024-01-30 | A thermal coal wet slime processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222174394U true CN222174394U (en) | 2024-12-17 |
Family
ID=93822816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420247394.XU Active CN222174394U (en) | 2024-01-30 | 2024-01-30 | A thermal coal wet slime processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222174394U (en) |
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2024
- 2024-01-30 CN CN202420247394.XU patent/CN222174394U/en active Active
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