CN212916098U - Dry and wet dual-purpose grading and sorting treatment system - Google Patents
Dry and wet dual-purpose grading and sorting treatment system Download PDFInfo
- Publication number
- CN212916098U CN212916098U CN202021063058.8U CN202021063058U CN212916098U CN 212916098 U CN212916098 U CN 212916098U CN 202021063058 U CN202021063058 U CN 202021063058U CN 212916098 U CN212916098 U CN 212916098U
- Authority
- CN
- China
- Prior art keywords
- coal
- sieve
- double
- path
- barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to a colliery sorting system specifically is a dry, wet dual-purpose classification sorting processing system, has solved the technical problem among the background art, and it includes equipment such as double-deck relaxation sieve, and the material export is connected to heavy meson shallow slot system on the upper screen of double-deck relaxation sieve, and the material export is connected to heavy meson swirler system on the lower floor of double-deck relaxation sieve, and the pan feeding section undersize material export of double-deck relaxation sieve divides A, B two tunnel settings, and A way is transported to the coal mixing belt through end coal transshipment scraper conveyor, end coal transshipment conveyer, and B way is transported the material to the coal slime bucket through the pipeline; the undersize material outlets of the discharging section of the double-layer relaxation sieve are arranged in C, D two ways, the path C is connected to a dense medium cyclone system through a desliming sieve, and the path D conveys the material to a coal slurry barrel through a pipeline; the entrances of the path A, the path B, the path C and the path D are all provided with gates. The utility model discloses can realize the nimble conversion of dry screening and wet screening, can satisfy the sorting of the current coal quality of mine.
Description
Technical Field
The utility model relates to a colliery is selected separately the system, specifically is a processing system is selected separately in grades to dry, wet dual-purpose.
Background
Along with coal mine annual mining, underground coal quality is greatly changed, the ash content of raw coal is increased to 45% from 35%, the recovery rate of clean coal is reduced to about 60% from 70% of the original design, the content of fine coal slime is increased to 10% from 6%, the existing all-in-washing treatment system is unchanged for years and cannot meet the existing coal quality sorting, the moisture content of product coal processed by the existing all-in-washing treatment system is increased to 11.6% from 10.2%, and the moisture content of individual train number exceeds 12%. The increase of the moisture of the product coal brings a series of problems of freezing in the transportation process, difficult port unloading and the like to the product coal, and meanwhile, the coal slime amount is increased, and the high moisture of the product causes little trouble to the operation of a coal preparation plant, thereby seriously affecting the production and the sale.
Disclosure of Invention
The utility model aims at solving the technical problem in the background art and provides a dry and wet dual-purpose grading and sorting treatment system.
The utility model provides a technical means that its technical problem adopted is: a dry and wet dual-purpose classification and separation treatment system comprises a heavy medium shallow slot system, a heavy medium cyclone system, a fine coal slurry treatment system, a raw coal entering plant belt, a coal mixing belt and a gangue belt, and further comprises a double-layer relaxation sieve, a coal slurry barrel, a classification cyclone, a spiral separator and a transfer barrel, wherein a feeding end of the double-layer relaxation sieve is connected with an output end of the raw coal entering plant belt, an upper-layer sieve material outlet of the double-layer relaxation sieve is connected to the heavy medium shallow slot system, a lower-layer sieve material outlet of the double-layer relaxation sieve is connected to the heavy medium cyclone system, a feeding section sieve material outlet of the double-layer relaxation sieve is arranged in A, B two ways, an A way is transmitted to the coal mixing belt through a tail coal transfer scraper machine and a tail coal transfer conveyor, and a B way is used for transmitting materials to the coal slurry barrel through a pipeline; the undersize material outlets of the discharging section of the double-layer relaxation sieve are arranged in C, D two ways, the path C is connected to a dense medium cyclone system through a desliming sieve, and the path D conveys the material to a coal slurry barrel through a pipeline; gates are arranged at the inlets of the path A, the path B, the path C and the path D; a material outlet of the coal slime barrel is connected to a feeding port of a grading cyclone through a pump, a discharging port of the grading cyclone is connected to a feeding port of a spiral separator, and a clean coal discharging port of the spiral separator is connected to a coal mixing belt through a pre-dewatering arc sieve and a coal slime centrifuge in sequence; a gangue discharge port of the spiral separator is connected to a gangue belt through a high-frequency screen; an undersize material outlet of the pre-dewatering arc-shaped sieve, a centrifugate outlet of the coal slime centrifugal machine and an undersize material outlet of the high-frequency sieve are connected to an input port of the rotary discharge barrel; and an overflow outlet of the grading cyclone and a material outlet of the rotary discharge barrel are connected to a fine coal slime treatment system. The heavy-medium shallow slot system, the heavy-medium swirler system, the fine coal slurry treatment system, the raw coal entering plant belt, the coal mixing belt and the gangue belt are all devices in the existing full-entering washing treatment system.
A dry, wet dual-purpose hierarchical sorting processing system carry out the flow of dry process screening do, take off the powder flow promptly and be:
raw coal is conveyed to a double-layer relaxation sieve through a raw coal entering belt, a feeding section of the double-layer relaxation sieve adopts dry screening, and a discharging section of the double-layer relaxation sieve sprays water, so that desliming preparation before washing is realized; lump coal on an upper layer screen of the double-layer flip-flow screen enters a dense medium shallow slot system for sorting through an upper material outlet of the upper layer screen, and oversize slack coal on a lower layer screen of the double-layer flip-flow screen enters a dense medium cyclone system for sorting through an upper material outlet of the lower layer screen; the gate A of the undersize material outlet of the feeding section of the double-layer relaxation sieve is opened, the gate B is closed, and the undersize material of the feeding section is transmitted to the coal mixing belt from the path A through the slack coal transfer scraper and the slack coal transfer conveyor to realize the powder removal; the gate of the C way of the material outlet under the sieve at the discharging section of the double-layer relaxation sieve is opened, the gate of the D way is closed, and the material under the sieve at the discharging section of the double-layer relaxation sieve is transmitted to the heavy medium cyclone system for separation from the C way through the desliming sieve. The feeding section of the double-layer flip-flow screen is the front half part of the screen body, and the discharging section is the rear half part of the screen body.
A dry, wet dual-purpose is selected separately processing system in grades and is carried out wet screening's flow do, go into promptly and wash the flow for totally:
the feeding section and the discharging section of the double-layer relaxation sieve are all sprayed with water, lump coal of the upper-layer sieve enters the dense-medium shallow slot system through the upper material outlet of the upper-layer sieve for separation, oversize slack coal of the lower-layer sieve enters the dense-medium cyclone system from the upper material outlet of the lower-layer sieve for separation, an A-way gate of the undersize material outlet of the feeding section of the double-layer relaxation sieve is closed, a B-way gate is opened, and undersize materials of the feeding section are transmitted to the coal mud bucket from a B-way; the gate of the C way of the undersize material outlet of the discharging section of the double-layer relaxation sieve is closed, the gate of the D way is opened, and the undersize material of the discharging section is transmitted to the coal slurry barrel from the D way; finally, the materials in the coal slime barrel are conveyed to a grading cyclone through a pump from a material outlet of the coal slime barrel, the materials are conveyed to a spiral sorting machine after being processed by the grading cyclone, and cleaned coal is output from a cleaned coal discharge port of the spiral sorting machine and is conveyed to a coal mixing belt through a pre-dewatering sieve bend and a coal slime centrifuge in sequence; waste rock is transmitted to a waste rock belt from a waste rock discharge port of the spiral sorting machine through the high-frequency sieve; undersize materials of the pre-dewatering arc-shaped sieve are transmitted to the rotary discharge barrel from an undersize material outlet, centrifugate of the coal slime centrifugal machine is transmitted to the rotary discharge barrel from a centrifugate outlet, and undersize materials of the high-frequency sieve are transmitted to the rotary discharge barrel from an undersize material outlet; the overflow upper layer coal slime of the grading cyclone is transmitted to a fine coal slime treatment system through an overflow outlet; the materials in the rotary discharging barrel are output from the material outlet and are transmitted to the fine coal slime processing system through the pump.
The utility model has the advantages that: the method can realize flexible conversion of dry screening and wet screening, when the content of the pulverized coal in the raw coal is high, the dry screening is selected, the pulverized coal can be prevented from entering a washing system to be soaked and argillized to generate more fine coal slime, the total coal slime amount in the system is reduced, and the concentration and the viscosity of the suspension liquid are reduced; the quality fluctuation of the power coal product caused by product blending is avoided to a great extent, and the moisture in the power coal product is reduced; the input amount of a slack coal system is reduced, the load of a coal slime water system is reduced, and the production cost is reduced; the pulverized coal screened by the dry method can be directly used as a product, so that the yield of commercial coal is increased, the sales income is increased, the occurrence frequency of the problems of freezing in the transportation process, difficult port unloading and the like is effectively reduced, the discharge amount of gangue is reduced, and the discharge amount of the gangue is reduced; when the content of the coal dust in the raw coal is low, the device can be directly converted into wet screening; through the utility model discloses not only can improve the separation flexibility ratio of selecting separately processing system, reduce the coal slime product to the influence of power coal product quality, but also can satisfy the separation of the current coal quality of mine, reduce the running cost of coal preparation factory, improve the economic benefits of coal preparation factory.
Drawings
Fig. 1 is a schematic structural diagram of a dry/wet classification and separation processing system according to the present invention.
In the figure: 1-heavy medium shallow slot system; 2-heavy medium cyclone system; 3-fine coal slime treatment system; 4-raw coal entering a factory belt; 5-coal mixing belt; 6-a gangue belt; 7-double layer flip-flow screen; 8-a coal slime barrel; 9-a classifying cyclone; 10-a spiral classifier; 11-rotating a discharge barrel; 12-an upper screen material outlet; 13-material outlet on the lower layer screen; 14-a material outlet below the screen of the feeding section; 15-transfer of the slack coal to a scraper conveyor; 16-a slack coal transfer conveyor; 17-a material outlet below the screen at the discharging section; 18-desliming sieve; 19-pre-dewatering sieve bend; 20-coal slurry centrifuge; 21-high frequency sieve; 22-pump.
Detailed Description
Referring to fig. 1, a dry and wet classification and separation system according to the present invention will be described in detail.
A dry and wet dual-purpose classification and separation treatment system comprises a heavy medium shallow slot system 1, a heavy medium cyclone system 2, a fine coal slurry treatment system 3, a raw coal entering plant belt 4, a coal mixing belt 5 and a waste rock belt 6, and further comprises a double-layer relaxation sieve 7, a coal slurry barrel 8, a classification cyclone 9, a spiral separator 10 and a transfer barrel 11, wherein a feeding end of the double-layer relaxation sieve 7 is connected with an output end of the raw coal entering plant belt 4, an upper-layer on-sieve material outlet 12 of the double-layer relaxation sieve 7 is connected to the heavy medium shallow slot system 1, a lower-layer on-sieve material outlet 13 of the double-layer relaxation sieve 7 is connected to the heavy medium cyclone system 2, a feeding section under-sieve material outlet 14 of the double-layer relaxation sieve 7 is arranged in A, B two ways, the A way is transmitted to the coal mixing belt 5 through a tail coal transfer conveyor 15 and a tail coal transfer conveyor 16, and the B way is transmitted to the coal slurry barrel 8 through a pipeline; the undersize material outlet 17 of the discharging section of the double-layer relaxation sieve 7 is arranged in C, D two ways, the path C is connected to the dense medium cyclone system 2 through the desliming sieve 18, and the path D conveys the material to the coal slurry barrel 8 through the pipeline; gates are arranged at the inlets of the path A, the path B, the path C and the path D; a material outlet of the coal slime barrel 8 is connected to a feeding port of a grading cyclone 9 through a pump 22, a discharging port of the grading cyclone 9 is connected to a feeding port of a spiral separator 10, and a clean coal discharging port of the spiral separator 10 is connected to a coal mixing belt 5 through a pre-dewatering arc-shaped screen 19 and a coal slime centrifugal machine 20 in sequence; a gangue discharge port of the spiral separator 10 is connected to a gangue belt 6 through a high-frequency screen 21; an undersize material outlet of the pre-dewatering curved screen 19, a centrifugate outlet of the coal slime centrifugal machine 20 and an undersize material outlet of the high-frequency screen 21 are connected to an input port of the rotary discharge barrel 11; the overflow outlet of the classifying cyclone 9 and the material outlet of the rotary discharge barrel 11 are connected to the fine coal slurry treatment system 3 by a pump 22. The heavy-medium shallow slot system 1, the heavy-medium cyclone system 2, the fine coal slime treatment system 3, the raw coal entering plant belt 4, the coal mixing belt 5 and the gangue belt 6 are all devices in the existing full-entering washing treatment system.
A dry, wet dual-purpose hierarchical sorting processing system carry out the flow of dry process screening do, take off the powder flow promptly and be:
raw coal is conveyed to a double-layer relaxation sieve 7 through a raw coal entering belt 4, a feeding section of the double-layer relaxation sieve 7 is screened by a dry method, and a discharging section of the double-layer relaxation sieve 7 is sprayed with water, so that desliming preparation before washing is realized; lump coal on an upper layer screen of the double-layer flip-flow screen 7 enters the dense-medium shallow slot system 1 for sorting through an upper layer screen upper material outlet 12, and oversize slack coal on a lower layer screen of the double-layer flip-flow screen 7 enters the dense-medium cyclone system 2 for sorting through a lower layer screen upper material outlet 13; the gate A of the undersize material outlet 14 of the feeding section of the double-layer relaxation sieve 7 is opened, the gate B is closed, and the undersize material of the feeding section is transmitted to the coal mixing belt 5 from the path A through the slack coal transfer scraper 15 and the slack coal transfer conveyor 16 to realize powder removal; the gate of the C way of the undersize material outlet 17 of the discharging section of the double-layer relaxation sieve 7 is opened, the gate of the D way is closed, and the undersize material of the discharging section of the double-layer relaxation sieve 7 is transmitted to the dense medium cyclone system 2 for separation from the C way through the desliming sieve 18. The feeding section of the double-layer flip-flow screen 7 is the front half part of the screen body, and the discharging section is the rear half part of the screen body.
A dry, wet dual-purpose is selected separately processing system in grades and is carried out wet screening's flow do, go into promptly and wash the flow for totally:
the feeding section and the discharging section of the double-layer relaxation sieve 7 are all sprayed with water, lump coal of an upper-layer sieve enters the dense-medium shallow slot system 1 through an upper-layer sieve material outlet 12 for sorting, oversize slack coal of a lower-layer sieve enters the dense-medium cyclone system 2 from a lower-layer sieve material outlet 13 for sorting, an A-way gate of a lower-layer sieve material outlet 14 of the feeding section of the double-layer relaxation sieve 7 is closed, a B-way gate is opened, and undersize materials of the feeding section are transmitted to the coal slurry barrel 8 from a B-way; the gate of the C way of the undersize material outlet 17 of the discharging section of the double-layer relaxation sieve 7 is closed, the gate of the D way is opened, and the undersize material of the discharging section is transmitted to the coal slurry barrel 8 from the D way; finally, the materials in the coal slime barrel 8 are conveyed to a grading cyclone 9 from a material outlet of the coal slime barrel 8 through a pump 22, the materials are conveyed to a spiral sorting machine 10 after being processed by the grading cyclone 9, and cleaned coal is output from a cleaned coal discharge port of the spiral sorting machine 10 and is conveyed to a coal mixing belt 5 through a pre-dewatering arc-shaped sieve 19 and a coal slime centrifugal machine 20 in sequence after being sorted by the spiral sorting machine 10; waste rock is transmitted to a waste rock belt 6 from a waste rock discharge port of the spiral separator 10 through a high-frequency screen 21; undersize materials of the pre-dewatering curved screen 19 are transmitted to the rotary discharge barrel 11 from an undersize material outlet, centrifugate of the coal slime centrifugal machine 20 is transmitted to the rotary discharge barrel 11 from a centrifugate outlet, and undersize materials of the high-frequency screen 21 are transmitted to the rotary discharge barrel 11 from an undersize material outlet; the overflow upper layer coal slime of the grading cyclone 9 is transmitted to the fine coal slime treatment system 3 through an overflow outlet; the material in the rotary discharging barrel 11 is output from the material outlet and is transmitted to the fine coal slurry processing system 3 through the pump 22.
If the coal washery goes into to wash raw coal every year and is 12Mt/a, utilize a dry, wet dual-purpose grading sorting processing system select separately the back, through the production operational aspect analysis of four seasons, clean coal rate of recovery has improved more than 10%, calorific capacity has reduced 300 big calorie/kg, and the volume of discharging waste rock has reduced more than 10%, and the totality is calculated, and annual increase is about 1 hundred million yuan.
While the invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. A dry and wet dual-purpose classification and separation treatment system comprises a heavy-medium shallow slot system (1), a heavy-medium cyclone system (2), a fine coal slurry treatment system (3), a raw coal entering plant belt (4), a coal mixing belt (5) and a gangue belt (6), and is characterized by further comprising a double-layer relaxation sieve (7), a coal slurry barrel (8), a classification cyclone (9), a spiral separator (10) and a transfer barrel (11), wherein the feeding end of the double-layer relaxation sieve (7) is connected with the output end of the raw coal entering plant belt (4), an upper-layer-sieve material outlet (12) of the double-layer relaxation sieve (7) is connected to the heavy-medium shallow slot system (1), a lower-layer-sieve material outlet (13) of the double-layer relaxation sieve (7) is connected to the heavy-medium cyclone system (2), and a lower-sieve material outlet (14) of a feeding section of the double-layer relaxation sieve (7) is arranged in A, B ways, the A path is transmitted to a coal mixing belt (5) through a slack coal transfer scraper (15) and a slack coal transfer conveyor (16), and the B path transmits the materials to a coal slime barrel (8) through a pipeline; a material outlet (17) below the screen of the discharging section of the double-layer flip-flow screen (7) is arranged in C, D two ways, a C way is connected to the dense medium cyclone system (2) through a desliming screen (18), and a D way is used for conveying the material to a coal mud barrel (8) through a pipeline; gates are arranged at the inlets of the path A, the path B, the path C and the path D; a material outlet of the coal slime barrel (8) is connected to a feeding port of a grading cyclone (9), a discharging port of the grading cyclone (9) is connected to a feeding port of a spiral separator (10), and a clean coal discharging port of the spiral separator (10) is connected to the coal mixing belt (5) through a pre-dewatering arc-shaped screen (19) and a coal slime centrifugal machine (20) in sequence; a gangue discharge port of the spiral separator (10) is connected to a gangue belt (6) through a high-frequency screen (21); an undersize material outlet of the pre-dewatering arc-shaped sieve (19), a centrifugate outlet of the coal slime centrifugal machine (20) and an undersize material outlet of the high-frequency sieve (21) are connected to an input port of the rotary discharge barrel (11); an overflow outlet of the grading cyclone (9) and a material outlet of the rotary discharge barrel (11) are connected to the fine coal slime treatment system (3).
2. The dry and wet dual-purpose classifying and sorting treatment system according to claim 1, wherein a pump (22) is connected between the coal slurry barrel (8) and the classifying cyclone (9), and a pump (22) is connected between the rotary discharging barrel (11) and the fine coal slurry treatment system (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021063058.8U CN212916098U (en) | 2020-06-11 | 2020-06-11 | Dry and wet dual-purpose grading and sorting treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021063058.8U CN212916098U (en) | 2020-06-11 | 2020-06-11 | Dry and wet dual-purpose grading and sorting treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212916098U true CN212916098U (en) | 2021-04-09 |
Family
ID=75322542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021063058.8U Active CN212916098U (en) | 2020-06-11 | 2020-06-11 | Dry and wet dual-purpose grading and sorting treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212916098U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700168A (en) * | 2021-09-30 | 2022-07-05 | 中国矿业大学 | Dry-wet combined desliming and sorting system and sorting method |
-
2020
- 2020-06-11 CN CN202021063058.8U patent/CN212916098U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700168A (en) * | 2021-09-30 | 2022-07-05 | 中国矿业大学 | Dry-wet combined desliming and sorting system and sorting method |
| CN114700168B (en) * | 2021-09-30 | 2023-07-14 | 中国矿业大学 | Dry-wet combined desliming sorting system and sorting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109718944B (en) | A kind of aqueous medium underground coal preparation technique | |
| US4364822A (en) | Autogenous heavy medium process and apparatus for separating coal from refuse | |
| WO2018145512A1 (en) | Modular high-density coal measures oil shale quality improvement process and quality improvement system | |
| CN110523524B (en) | Simplified sorting process for full-grade sorting of anthracite | |
| CN104549710A (en) | Three-stage opening compounding separation process and three-stage opening compounding separation system for coarse slime | |
| CN112844763A (en) | Ore X-ray preselection-crushing system and process thereof | |
| CN105126994B (en) | A kind of washing appliance for the high high high spoil coal of mud of ash | |
| CN105597914A (en) | Dense medium jamming bed coarse slime separation system | |
| CN212916098U (en) | Dry and wet dual-purpose grading and sorting treatment system | |
| CN107020200A (en) | Floatation clean coal mixing with technique in wholegrain level cleaned coal | |
| CN105964392A (en) | Coal dressing and desliming system | |
| CN101486014B (en) | Helical flow trough coal separation device by gravity separation and gravity separation method for clean coal using helical flow trough | |
| CN104437832A (en) | Dry-method fines removal dense medium sorting process for slack coal flip-flow screen | |
| CN105537120B (en) | The system and method for handling low-order coal | |
| CN104722390B (en) | Coal floats combined sorting technique again in a kind of coking | |
| CN203862375U (en) | Washing and selecting device targeted for high-ash high-mud high-gangue coal | |
| CN109158202A (en) | Broken-screening-washup the technique of the high high water earth's surface mixing bloodstone of mud | |
| CN103785529B (en) | A kind of washing appliance for high grey high mud height spoil coal | |
| CN205413332U (en) | Dense media disturbs bed coarse coal mud to select separately system | |
| CN105536961A (en) | Integrated device system used for grinding and classifying mineral separation of mineral | |
| CN205613555U (en) | Low -grade iron ore wet separation system | |
| CN209005944U (en) | A kind of processing system of high ash spoil mud | |
| CN218132497U (en) | High-ash-content low-calorific-value lignite coal slime production device | |
| CN114950715B (en) | Coarse and refined coal classification and crushing equipment system in main re-selection system of heavy medium cyclone | |
| CN114950713B (en) | Dense medium cyclone main recleaning coal preparation process capable of improving recovery rate of cleaned coal of difficult coal preparation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |