CN215313107U - Preparation system of coal dressing dense medium - Google Patents
Preparation system of coal dressing dense medium Download PDFInfo
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- CN215313107U CN215313107U CN202120494260.4U CN202120494260U CN215313107U CN 215313107 U CN215313107 U CN 215313107U CN 202120494260 U CN202120494260 U CN 202120494260U CN 215313107 U CN215313107 U CN 215313107U
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Abstract
The application discloses a preparation system of coal dressing dense media, which comprises a desliming sieve, sorting equipment, a dense medium barrel, a magnetic tail barrel, a medium combining barrel, a first magnetizing device and a medium powder storage bin; the magnetic tail barrel is connected with the desliming sieve, and the medium combining barrel is connected with the sorting equipment; the medium storage bin is arranged above the concentrated medium barrel, the magnetic tail barrel is connected with the concentrated medium barrel, the concentrated medium barrel is connected with the medium combining barrel, the first magnetizing device is arranged between the concentrated medium barrel and the medium combining barrel, and the magnetic tail in the magnetic tail barrel and the medium powder in the medium powder storage bin flow into the medium combining barrel through the first magnetizing device after being mixed. The magnetic tail in the magnetic tail barrel is conveyed to the concentrated medium barrel to be mixed with the medium powder to serve as concentrated medium, the concentrated medium is magnetized through the first magnetizing device in the process of being conveyed to the medium combining barrel, the magnetism of the medium powder which is newly added and the weak magnetic iron powder in the magnetic tail is further improved, the density of the medium which is added into the medium combining barrel is guaranteed, and the recycling of the magnetic tail is realized.
Description
Technical Field
The application relates to the technical field of coal dressing, in particular to a preparation system of a coal dressing dense medium.
Background
Coal washing refers to the process of removing gangue or other impurities from coal. Coal washing is performed by utilizing the difference of physical properties between coal and impurities such as gangue, and the coal and the impurities are separated in media with different densities or characteristics. The main washing process at present is a dense medium separation process, the dense medium separation process adopts magnetite powder as a separation medium, a suspension with a certain density is prepared by using a mixture of water, coal slime and the magnetite powder, coarse-grained coal and gangue are layered in the suspension according to the Archimedes principle, clean coal with lower density floats upwards, gangue with higher density sinks, and thus separation of the coal and the gangue is realized, and as a product takes away a part of the medium, magnetic decay and a weakly magnetic mineral magnetic separator cannot recover, a system needs to add a new medium to make up for reduction of the density. Because the raw coal washing amount is huge, the consumption of the separation medium is also extremely large, the recovery rate of the magnetic tail after washing is lower at present, and the coal separation cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the shortcoming that the low coal dressing cost that causes of medium recovery rate is high among the prior art, provides a preparation system of coal dressing dense medium that can effectively improve medium recovery rate.
The technical scheme of the application provides a preparation system of coal dressing dense medium, which comprises a desliming sieve, sorting equipment, a dense medium barrel, a magnetic tail barrel, a medium combining barrel, a first magnetizing device and a medium powder storage bin;
the magnetic tail barrel is connected with the desliming sieve, and the medium combining barrel is connected with the sorting equipment;
the medium storage bin is arranged above the concentrated medium barrel, the magnetic tail barrel is connected with the concentrated medium barrel, the concentrated medium barrel is connected with the medium combining barrel, the first magnetizing device is arranged between the concentrated medium barrel and the medium combining barrel, and the magnetic tail in the magnetic tail barrel and the medium powder in the medium powder storage bin flow into the medium combining barrel through the first magnetizing device after being mixed.
The medium-adding magnetic separator is provided with a medium-adding feed port, a medium-adding concentrate feed port and a medium-adding tailing feed port;
the concentrated medium barrel is communicated with the feeding inlet, the first magnetizing device is arranged between the concentrated medium barrel and the feeding inlet, the feeding concentrate feed opening is communicated with the feeding inlet, and the feeding tailing feed opening is communicated with the magnetic tailing barrel.
Furthermore, the magnetic separator also comprises a concentrated medium pump which is connected between the concentrated medium barrel and the medium feeding port and used for pumping the concentrated medium in the concentrated medium barrel into the medium feeding magnetic separator.
Further, still include the magnetic tail pump, the feed liquor pipe of magnetic tail pump with the magnetic tail bucket intercommunication, the drain pipe of magnetic tail pump with dense medium bucket with desliming sieve intercommunication, the magnetic tail pump be used for with the magnetic tail in the magnetic tail bucket extract to dense medium bucket or desliming sieve.
Further, still include the three-way valve, the three-way valve has entry, first export and second export, the drain pipe of magnetic tail pump with the entry intercommunication, first export with dense medium bucket intercommunication, the second export with desliming sieve intercommunication.
Further, the device also comprises a medium combining pump which is connected between the medium combining barrel and the sorting equipment and is used for pumping the mixed medium in the medium combining barrel into the sorting equipment.
Furthermore, the device also comprises a dense medium valve, a magnetic tail valve and a medium combining valve;
the dense medium valve is connected between the dense medium barrel and the dense medium pump, the magnetic tail valve is connected between the magnetic tail barrel and the magnetic tail pump, and the medium combining valve is connected between the medium combining barrel and the medium combining pump.
The medium removing sieve is provided with a medium combining discharge hole, and the medium combining discharge hole is connected with the medium combining barrel.
Furthermore, the medium removing sieve is further provided with a dilute medium discharge port and a split medium discharge port, and the dilute medium discharge port and the split medium discharge port are both connected with the medium combining barrel through the second magnetizing device.
Further, still include and take off the medium magnet separator, it has takes off the medium pan feeding mouth, takes off the medium concentrate feed opening and takes off the medium tailing feed opening to take off the medium magnet separator, take off the medium pan feeding mouth with dilute medium discharge gate with the reposition of redundant personnel closes the medium discharge gate intercommunication, take off the medium concentrate feed opening with close the medium bucket intercommunication, take off the medium tailing feed opening with magnetism tail bucket intercommunication.
After adopting above-mentioned technical scheme, have following beneficial effect:
the magnetic tail barrel is connected with the dense medium barrel, medium powder is added into magnetic tail liquid in the magnetic tail barrel and is mixed to serve as the dense medium, the dense medium is magnetized through the first magnetizing device in the process of transferring the dense medium to the medium combining barrel, magnetism of the medium powder which is newly added and weak magnetic iron powder in the magnetic tail is further improved, density of the medium which is added into the medium combining barrel is guaranteed, and recycling of the magnetic tail is achieved.
Drawings
The disclosure of the present application will become more readily understood by reference to the drawings. It should be understood that: these drawings are for illustrative purposes only and are not intended to limit the scope of the present application. In the figure:
FIG. 1 is a schematic diagram of a system for preparing coal preparation dense media according to an embodiment of the present application.
Detailed Description
Embodiments of the present application are further described below with reference to the accompanying drawings.
It is easily understood that according to the technical solutions of the present application, those skilled in the art can substitute various structures and implementations without changing the spirit of the present application. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical solutions of the present application, and should not be construed as limiting or restricting the technical solutions of the present application in their entirety.
The terms of orientation of up, down, left, right, front, back, top, bottom, and the like referred to or may be referred to in this specification are defined relative to the configuration shown in the drawings, and are relative terms, and thus may be changed correspondingly according to the position and the use state of the device. Therefore, these and other directional terms should not be construed as limiting terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Throughout the description of the present application, it is to be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The foregoing is to be understood as belonging to the specific meanings in the present application as appropriate to the person of ordinary skill in the art.
The preparation system of the coal dressing dense medium in the embodiment of the application is shown in fig. 1 and comprises a desliming sieve 010, a separation device 011, a concentrated medium barrel 03, a magnetic tail barrel 02, a medium combining barrel 01, a first magnetizing device 04 and a medium powder storage bin 09;
the magnetic tail barrel 02 is connected with a desliming screen 010, and the medium combining barrel 01 is connected with a sorting device 011;
the medium storage bin 09 is arranged above the concentrated medium barrel 03, the magnetic tail barrel 02 is connected with the concentrated medium barrel 03, the concentrated medium barrel 03 is connected with the medium combining barrel 01, the first magnetizing device 04 is arranged between the concentrated medium barrel 03 and the medium combining barrel 01, and the magnetic tail in the magnetic tail barrel 02 and the medium powder in the medium powder storage bin 09 flow into the medium combining barrel 01 through the first magnetizing device 04 after being mixed.
Specifically, the high-concentration tank 03 is used for disposing a high-concentration medium; the magnetic tail barrel 02 is used for storing the magnetic tail with lower density after coal washing, and because the magnetic tail can not be completely recovered, the magnetic tail barrel 02 is connected with the desliming screen 010, and the redundant magnetic tail which can not be recovered is conveyed to the desliming screen 010 to be treated as waste; the medium combining barrel 01 is used for storing the configured dense media, the medium combining barrel 01 is communicated with the sorting equipment 011, and the dense media are conveyed to the sorting equipment 011 to be subjected to raw coal sorting.
In the embodiment of the application, the magnetic tail barrel 02 is connected with the concentrated medium barrel 03, the magnetic tail in the magnetic tail barrel 02 is conveyed into the concentrated medium barrel 03 to be used as the liquid for concentrated medium configuration, medium powder is added into the concentrated medium barrel 03 to be mixed to prepare the concentrated medium, and the magnetic tail is recycled; and in the pipeline that dense medium shifts to closing in the medium bucket 01, set up first magnetization device 04 and magnetize to dense medium, strengthen the magnetism of the medium powder of newly adding and the weak magnetism iron powder in the magnetic tail, guarantee to add the density of the medium that closes in the medium bucket 01, improved the recovery efficiency of magnetic tail.
Further, the preparation system of the coal dressing dense medium further comprises a medium adding magnetic separator 05, wherein the medium adding magnetic separator 05 is provided with a medium adding feed port 51, a medium adding concentrate feed port 52 and a medium adding tailing feed port 53;
the concentrated medium barrel 03 is communicated with the medium feeding port 51, the first magnetizing device 04 is arranged between the concentrated medium barrel 03 and the medium feeding port 51, the medium feeding concentrate port 52 is communicated with the medium combining barrel 01, and the medium feeding tailing port 53 is communicated with the magnetic tailing barrel 02.
Specifically, the medium adding magnetic separator 05 is used for carrying out magnetic separation on the concentrated medium conveyed to the medium combining barrel 01 by the concentrated medium barrel 03, separating the concentrated medium into concentrate with stronger magnetism and tailings with weaker magnetism according to the strength of the magnetism, enabling the concentrate to flow into the medium combining barrel 01 from the medium adding concentrate feed opening 52, and enabling the tailings to flow into the magnetic tailing barrel 02 from the medium adding tailing feed opening 53.
The concentrated medium barrel 03 conveys the concentrated medium into the medium combining barrel 01, and the concentrated medium is further concentrated through magnetic separation of the medium adding magnetic separator 05, so that the density of the medium in the medium combining barrel 01 can meet the coal dressing requirement.
Further, the preparation system for the coal dressing dense medium further comprises a dense medium pump 014, and the dense medium pump 014 is connected between the dense medium barrel 03 and the feeding port 51 and is used for pumping the dense medium in the dense medium barrel 03 to the feeding magnetic separator 05.
Specifically, a liquid inlet pipe of the concentrated medium pump 014 is communicated with the concentrated medium barrel 03, a liquid outlet pipe is communicated with the medium feeding inlet 51, and concentrated medium in the concentrated medium barrel 03 is extracted into the medium feeding magnetic separator 05. The first magnetizing apparatus 04 may be installed outside the pipe between the liquid inlet pipe of the concentrated medium pump 014 and the feeding inlet 51, and may be magnetized when the concentrated medium flows through the region where the first magnetizing apparatus 04 is located, or may be connected to the pipe between the liquid inlet pipe of the concentrated medium pump 014 and the feeding inlet 51, and the concentrated medium may flow through the first magnetizing apparatus 04 to be magnetized.
A dense medium valve 017 is connected between the liquid inlet pipe of the dense medium pump 014 and the dense medium barrel 03, and the dense medium pump 014 is communicated with the dense medium barrel 03 when the dense medium valve 017 is opened, so that the dense medium can be pumped.
Further, the preparation system of the coal dressing dense medium further comprises a magnetic tail pump 013, a liquid inlet pipe of the magnetic tail pump 013 is communicated with the magnetic tail barrel 02, a liquid outlet pipe of the magnetic tail pump 013 is communicated with the dense medium barrel 03 and the desliming screen 010, and the magnetic tail pump 013 is used for pumping magnetic tails in the magnetic tail barrel 02 to the dense medium barrel 03 or the desliming screen 010.
Specifically, the drain pipe of magnetic tail pump 013 is connected with the three-way valve (not shown), and the three-way valve has entry, first export and second export, and the drain pipe and the entry intercommunication of magnetic tail pump 013, first export and dense medium bucket 03 intercommunication, second export and desliming sieve 010 intercommunication.
The drain pipe of magnetic tail pump 013 is through setting up the tee bend valve and dense medium bucket 03 and desliming sieve 010 intercommunication, when adjusting the tee bend valve and making entry and first export intercommunication, start magnetic tail pump 013 carry the magnetic tail to dense medium bucket 03 from magnetic tail bucket 02 in, when adjusting the tee bend valve and making entry and second export intercommunication, start magnetic tail pump 013 and carry the magnetic tail to desliming sieve 010 from magnetic tail bucket 02.
A magnetic tail valve 016 is further connected between a liquid inlet pipe of the magnetic tail pump 013 and the magnetic tail barrel 02, when the magnetic tail valve 016 is opened, the magnetic tail pump 013 is communicated with the magnetic tail barrel 02, and magnetic tails in the magnetic tail barrel 02 can be pumped.
Further, the preparation system of the coal dressing dense medium further comprises a mixing pump 012, and the mixing pump 012 is connected between the mixing barrel 01 and the sorting equipment 011 and is used for pumping the mixed medium in the mixing barrel 01 to the sorting equipment 011.
Specifically, a liquid inlet pipe of the medium combining pump 012 is communicated with the medium combining barrel 01, a liquid outlet pipe is communicated with the sorting equipment 011, and a medium in the medium combining barrel 01 is pumped into the sorting equipment 011. A medium combining valve 015 is further connected between the liquid inlet pipe of the medium combining pump 012 and the medium combining barrel 01, and the medium combining pump 012 is communicated with the medium combining barrel 01 when the medium combining valve 015 is opened so as to pump the medium in the medium combining barrel 01.
Further, the preparation system of the coal dressing dense medium further comprises a medium removing sieve 06, the medium removing sieve 06 is provided with a medium combining discharge port 61, and the medium combining discharge port 61 is connected with the medium combining barrel 01.
The medium removing screen 06 is used for processing the medium after coal separation, and the screened combined medium with the density meeting the requirement flows into the combined medium barrel 01 from the combined medium discharge port 61, so that the recovery of the coal separation medium is realized.
Further, the preparation system of the coal dressing dense medium further comprises a second magnetizing device 07, the medium removing sieve 06 is further provided with a dilute medium discharge port 62 and a split combined medium discharge port 63, and the dilute medium discharge port 62 and the split combined medium discharge port 63 are both connected with the medium combining barrel 01 through the second magnetizing device 07.
The medium removing screen 06 also screens out dilute medium and shunt medium with lower magnetism and density, which flow out from the dilute medium discharge port 62 and the shunt medium discharge port 63 respectively, and the second magnetizing device 07 magnetizes the dilute medium and the shunt medium and then recycles the dilute medium and the shunt medium to the medium combining barrel 01, thereby further improving the recovery rate of the coal dressing medium. The dilute medium discharge port 62 and the split medium discharge port 63 can be merged into a common pipeline, and the second magnetizing device 07 is installed on the common pipeline.
Furthermore, the preparation system of the coal dressing dense medium also comprises a medium removing magnetic separator 08, wherein the medium removing magnetic separator 08 is provided with a medium removing feeding port 81, a medium removing concentrate feed opening 82 and a medium removing tailing feed opening 83, the medium removing feeding port 81 is communicated with a dilute medium discharge port 62 and a shunt medium combining discharge port 63, the medium removing concentrate feed opening 82 is communicated with a medium combining barrel 01, and the medium removing tailing feed opening 83 is communicated with a magnetic tailing barrel 02.
Specifically, the medium-removing magnetic separator 08 is used for magnetically separating dilute medium and mixed medium separated by the medium-removing sieve 06, and the dilute medium and the mixed medium are separated into concentrate with strong magnetism and tailings with weak magnetism according to the strength of the magnetism, the concentrate flows into the medium-combining barrel 01 from a medium-removing concentrate feed opening 82, and the tailings flow into the magnetic tailing barrel 02 from a medium-removing tailing feed opening 83.
The medium-removing magnetic separator 08 performs magnetic separation and further concentration on the magnetized dilute medium and the shunt medium to ensure that the density of the medium in the medium combining barrel 01 meets the requirement of coal dressing.
In the preparation system of the coal dressing dense medium in the embodiment of the application, the dense medium is provided with two channels, firstly, the magnetic tail in the magnetic tail barrel 02 is extracted into the dense medium barrel 03, medium powder 09 is added and mixed into the dense medium, the dense medium is magnetized through the first magnetizing device 04 and then conveyed to the medium adding magnetic separator 05 for magnetic separation, concentrate with strong magnetism is stored in the medium combining barrel 01, and tailings with weak magnetism are recovered to the magnetic tail barrel 02; secondly, the medium after magnetic separation is screened by a medium removing screen 06, the screened combined medium is stored in a medium combining barrel 01, the dilute medium and the shunt combined medium are mixed and then are magnetized by a second magnetizing device 07, and then are magnetically separated by a medium removing magnetic separator 08, the concentrate with stronger magnetism is stored in the medium combining barrel 01, and the tailings with weaker magnetism are recycled to a magnetic tailing barrel 02.
The preparation system of coal dressing dense medium in this application embodiment recycles the magnetic tail to carry out the magnetic separation after magnetizing the magnetic tail through magnetization device, improved the rate of recovery of magnetic tail, reduced medium configuration cost to a certain extent.
What has been described above is merely the principles and preferred embodiments of the present application. It should be noted that, for those skilled in the art, the embodiments obtained by appropriately combining the technical solutions respectively disclosed in the different embodiments are also included in the technical scope of the present invention, and several other modifications may be made on the basis of the principle of the present application and should be regarded as the protective scope of the present application.
Claims (10)
1. A preparation system of coal dressing dense media is characterized by comprising a desliming sieve, sorting equipment, a dense medium barrel, a magnetic tail barrel, a medium combining barrel, a first magnetizing device and a medium powder storage bin;
the magnetic tail barrel is connected with the desliming sieve, and the medium combining barrel is connected with the sorting equipment;
the medium storage bin is arranged above the concentrated medium barrel, the magnetic tail barrel is connected with the concentrated medium barrel, the concentrated medium barrel is connected with the medium combining barrel, the first magnetizing device is arranged between the concentrated medium barrel and the medium combining barrel, and the magnetic tail in the magnetic tail barrel and the medium powder in the medium powder storage bin flow into the medium combining barrel through the first magnetizing device after being mixed.
2. The preparation system of the coal dressing dense medium according to claim 1, characterized by further comprising a medium feeding magnetic separator, wherein the medium feeding magnetic separator is provided with a medium feeding port, a medium feeding concentrate feed port and a medium feeding tailing feed port;
the concentrated medium barrel is communicated with the feeding inlet, the first magnetizing device is arranged between the concentrated medium barrel and the feeding inlet, the feeding concentrate feed opening is communicated with the feeding inlet, and the feeding tailing feed opening is communicated with the magnetic tailing barrel.
3. The system for preparing coal dressing dense medium according to claim 2, characterized by further comprising a dense medium pump connected between the dense medium barrel and the feeding port for pumping the dense medium in the dense medium barrel to the feeding magnetic separator.
4. The system for preparing coal dressing heavy medium according to claim 3, further comprising a magnetic tail pump, wherein a liquid inlet pipe of the magnetic tail pump is communicated with the magnetic tail barrel, a liquid outlet pipe of the magnetic tail pump is communicated with the concentrated medium barrel and the desliming screen, and the magnetic tail pump is used for pumping the magnetic tail in the magnetic tail barrel to the concentrated medium barrel or the desliming screen.
5. The system for preparing a coal dressing dense medium according to claim 4, further comprising a three-way valve having an inlet, a first outlet and a second outlet, wherein a liquid outlet of the magnetic tail pump is in communication with the inlet, the first outlet is in communication with the dense medium barrel, and the second outlet is in communication with the desliming screen.
6. The coal preparation heavy medium preparation system according to claim 4, further comprising a mixing pump connected between the mixing barrel and the separation device for pumping the mixed medium in the mixing barrel into the separation device.
7. The preparation system of coal dressing heavy medium according to claim 6, characterized by further comprising a dense medium valve, a magnetic tail valve and a medium combining valve;
the dense medium valve is connected between the dense medium barrel and the dense medium pump, the magnetic tail valve is connected between the magnetic tail barrel and the magnetic tail pump, and the medium combining valve is connected between the medium combining barrel and the medium combining pump.
8. The system for preparing coal dressing dense medium according to any one of claims 1-7, characterized by further comprising a medium removing sieve, wherein the medium removing sieve is provided with a medium combining outlet, and the medium combining outlet is connected with the medium combining barrel.
9. The preparation system of coal dressing dense medium according to claim 8, further comprising a second magnetizing device, wherein the medium removing sieve is further provided with a dilute medium discharge port and a split medium combining discharge port, and the dilute medium discharge port and the split medium combining discharge port are both connected with the medium combining barrel through the second magnetizing device.
10. The system for preparing coal dressing dense medium according to claim 9, characterized by further comprising a medium-removing magnetic separator, wherein the medium-removing magnetic separator is provided with a medium-removing feeding port, a medium-removing concentrate feeding port and a medium-removing tailing feeding port, the medium-removing feeding port is communicated with the dilute medium discharging port and the split medium-combining discharging port, the medium-removing concentrate feeding port is communicated with the medium-combining barrel, and the medium-removing tailing feeding port is communicated with the magnetic tailing barrel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120494260.4U CN215313107U (en) | 2021-03-08 | 2021-03-08 | Preparation system of coal dressing dense medium |
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| CN202120494260.4U CN215313107U (en) | 2021-03-08 | 2021-03-08 | Preparation system of coal dressing dense medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114515647A (en) * | 2022-02-23 | 2022-05-20 | 中国神华能源股份有限公司哈尔乌素露天煤矿 | Control method and equipment for magnetic separator system |
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2021
- 2021-03-08 CN CN202120494260.4U patent/CN215313107U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114515647A (en) * | 2022-02-23 | 2022-05-20 | 中国神华能源股份有限公司哈尔乌素露天煤矿 | Control method and equipment for magnetic separator system |
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