CN105583068A - Magnetic tailings disposal system for middlings and gangue - Google Patents
Magnetic tailings disposal system for middlings and gangue Download PDFInfo
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- CN105583068A CN105583068A CN201410558982.6A CN201410558982A CN105583068A CN 105583068 A CN105583068 A CN 105583068A CN 201410558982 A CN201410558982 A CN 201410558982A CN 105583068 A CN105583068 A CN 105583068A
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- tailing
- flow direction
- coal
- selecting
- cluster cyclone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Filters For Electric Vacuum Cleaners (AREA)
Abstract
The invention discloses a magnetic tailings disposal system for middlings and gangue capable of recovering more clean coal out of middlings and gangue coarse slime. The disposal system comprises a cyclone group, a screening device, a floating device and a supporting material conveying device. The screening device, the floating device and the material-conveying device are connected with the cyclone group. The material direction of the cyclone group comprises following steps: selecting material for the screening device and selecting tailing for the floating device. The material direction of the screening device comprises following steps: selecting material for collection, returning tailing to the cyclone group. The material direction of the floating device comprises following steps selecting material for collection and selecting tailing to a compression filter-press device. The screening device comprises an arc sieve and a high frequency sieve matching the size of the floating device. The material direction of the arc sieve comprises following steps: selecting material to flow into the high frequency sieve, and returning tailing to the cyclone group. The material direction of the e high frequency sieve comprises following steps: selecting material to middlings products for collection and returning tailing to the cyclone group. As a result, the discharge of coal slime is reduced and utilization rate of coal resources is improved so as to effectively protect the environment.
Description
Technical field
The present invention relates to middle coal and gangue treatment system in a kind of coal preparation plant washing process flow process.
Background technology
At present, heavy-media coal preparation process has become the main flow technique of coal preparation plant. The main screening installation of the Ba Guan of cleaned coal branch company of Sichuan Huarong Energy Co., Ltd. river coal preparation plant adopts 3SNWX Φ 1300/920 with no pressure two to Jie's three products dense medium cyclone, dense medium cyclone cleaned coal, middle coal and spoil out enters respectively magnetic separator and carries out de-mediated, middle cash magnetic tailing is after a cluster cyclone sorting, coarse slime filters out middle coal through high-frequency screen, and tailing is directly delivered to concentrated filter-pressing device and processed.
Due in not having in this dense medium separation system, cash coarse slime recovery system, a large amount of coarse slimes enter subsequent technique link, not only part cleaned coal fails effectively to utilize, and also affects flotation device operation, causes thickener to press rake.
Summary of the invention
Technical problem to be solved by this invention is to provide in a kind of can recovery more the middle cash magnetic tailing treatment system of cleaned coal in cash coarse slime.
The technical solution adopted for the present invention to solve the technical problems is: middle cash magnetic tailing treatment system, comprise a cluster cyclone and the screening plant being connected with a cluster cyclone respectively, concentrated filter-pressing device, and supporting device for transporting objects, the flow direction of material of a cluster cyclone is: select material and remove screening plant, tailing removes concentrated filter-pressing device; The flow direction of material of screening plant bag is: select material and collect, tailing returns to a cluster cyclone, between described a cluster cyclone and concentrated filter-pressing device, is provided with flotation unit, and the flow direction of material of flotation unit is: select material and collect, tailing enters concentrated filter-pressing device.
Described screening plant comprises high-frequency screen, and the flow direction of material of high-frequency screen is: selecting material is the middle product of coal collecting, and tailing returns to a cluster cyclone.
Described screening plant also comprises the sieve bend that the specification of specification and flotation unit matches, and the flow direction of material of sieve bend is: select flow direction of material high-frequency screen, tailing returns to a cluster cyclone.
Described concentrated filter-pressing device comprises tail coal concentration basin and filter press, and the flow direction of material of tail coal concentration basin is: select material and enter filter press, tailing is recirculated water; The flow direction of material of filter press is: selecting material is the coal slime collecting, and tailing returns to tail coal concentration basin.
The invention has the beneficial effects as follows: according to the improvement to coal slurry water processing flow process, the cleaned coal of middle cash concentrate cyclone group overflow is reclaimed by flotation unit, reduced coal slime discharge, improve coal resources utilization rate, effectively protected environment.
Brief description of the drawings
Fig. 1 is the schematic diagram of existing middle cash magnetic tailing treatment system.
Fig. 2 is the schematic diagram of cash magnetic tailing treatment system in the present invention.
In figure, be labeled as 1-a cluster cyclone, 2-flotation unit, 3-sieve bend, 4-high-frequency screen, 5-tail coal concentration basin, 6-filter press.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 2, middle cash magnetic tailing treatment system of the present invention comprises a cluster cyclone 1 and the screening plant being connected with a cluster cyclone 1 respectively, concentrated filter-pressing device, and supporting device for transporting objects, the flow direction of material of a cluster cyclone 1 is: select material and remove screening plant, tailing removes flotation unit 2, and the flow direction of material of screening plant is: select material and collect, tailing returns to a cluster cyclone 1, the flow direction of material of flotation unit 2 is: select material and collect, tailing enters concentrated filter-pressing device. The cleaned coal particle that utilizes flotation unit to contain in cash magnetic tailing in can better reclaiming, not only avoid the thickener of tail coal concentration basin 5 to press rake, make system operation more smooth and easy, also make the slime content that finally enters concentrated filter-pressing device reduce simultaneously, reduced coal slime discharge.
In treatment system of the present invention, between each device, connect by corresponding device for transporting objects, described device for transporting objects can adopt the conventional device for transporting objects of this area, flow direction of material has clearly reflected the direction of motion of material between each device, defines the import and export annexation between each device.
Preferably, described screening plant comprises high-frequency screen 4, and the flow direction of material of high-frequency screen 4 is: selecting material is the middle product of coal collecting, and tailing returns to a cluster cyclone 1, utilize the middle coal composition in cash magnetic tailing in high-frequency screen 4 collections, improved the utilization rate of coal resources.
Better scheme is: described screening plant also comprises the sieve bend 3 that the specification of specification and flotation unit 2 matches, the flow direction of material of sieve bend 3 is: select flow direction of material high-frequency screen 4, tailing returns to a cluster cyclone 1, utilize sieve bend 3 to reclaim thicker coal slime, guarantee to enter the material specification of flotation unit and the design parameter of flotation unit is suitable, ensure that flotation unit works in optimum state, to reclaim more cleaned coal.
Conventionally described concentrated filter-pressing device can adopt tail coal concentration basin 5 and filter press 6, and the flow direction of material of tail coal concentration basin 5 is: select material and enter filter press 6, tailing is recirculated water; The flow direction of material of filter press 6 is: selecting material is the coal slime collecting, and tailing returns to tail coal concentration basin 5.
Embodiment:
The original middle cash magnetic tailing treatment system of certain coal preparation plant as shown in Figure 2, middle cash magnetic tailing treatment system, comprise a cluster cyclone 1 and the screening plant and the concentrated filter-pressing device that are connected with a cluster cyclone 1 respectively, what wherein screening plant adopted is high-frequency screen 4, concentrated filter-pressing device is made up of the tail coal concentration basin 5 connecting successively and filter press 6, filter-pressing coal slime ash content is on the low side, is about 42%, and tail coal reclaims difficulty.
As shown in Figure 2, after utilizing the present invention to the middle cash magnetic tailing treatment system transformation of this coal preparation plant, the flow direction of material of a cluster cyclone 1 is: select material and remove screening plant, tailing removes flotation unit 2; The flow direction of material of flotation unit 2 is: select material and collect, tailing enters concentrated filter-pressing device, the sieve bend 3 that described screening plant comprises high-frequency screen 4 and matches with the specification of flotation unit 2, the flow direction of material of sieve bend 3 is: select flow direction of material high-frequency screen 4, tailing returns to a cluster cyclone 1, the flow direction of material of high-frequency screen 4 is: selecting material is the middle product of coal collecting, tailing returns to a cluster cyclone 1, concentrated filter-pressing device comprises tail coal concentration basin 5 and filter press 6, the flow direction of material of tail coal concentration basin 5 is: select material and enter filter press 6, tailing is recirculated water; The flow direction of material of filter press 6 is: selecting material is the coal slime collecting, and tailing returns to tail coal concentration basin 5. 42% left and right of filter-pressing coal slime ash content from transformation rises to 56% left and right, and every annual sales revenue can increase approximately 1658.07 ten thousand yuan.
Claims (4)
1. cash magnetic tailing treatment system in, comprise a cluster cyclone (1) and the screening plant being connected with a cluster cyclone (1) respectively, concentrated filter-pressing device, and supporting device for transporting objects, the flow direction of material of a cluster cyclone (1) is: select material and remove screening plant, tailing removes concentrated filter-pressing device; The flow direction of material of screening plant is: select material and collect, tailing returns to a cluster cyclone (1), it is characterized in that: between described a cluster cyclone (1) and concentrated filter-pressing device, be provided with flotation unit (2), the flow direction of material of flotation unit (2) is: select material and collect, tailing enters concentrated filter-pressing device.
2. middle cash magnetic tailing treatment system as claimed in claim 1, is characterized in that: described screening plant comprises high-frequency screen (4), and the flow direction of material of high-frequency screen (4) is: selecting material is the middle product of coal collecting, and tailing returns to a cluster cyclone (1).
3. middle cash magnetic tailing treatment system as claimed in claim 2, it is characterized in that: described screening plant also comprises the sieve bend (3) that the specification of specification and flotation unit (2) matches, the flow direction of material of sieve bend (3) is: select flow direction of material high-frequency screen (4), tailing returns to a cluster cyclone (1).
4. the middle cash magnetic tailing treatment system as described in claim 1,2 or 3, it is characterized in that: described concentrated filter-pressing device comprises tail coal concentration basin (5) and filter press (6), the flow direction of material of tail coal concentration basin (5) is: select material and enter filter press (6), tailing is recirculated water; The flow direction of material of filter press (6) is: selecting material is the coal slime collecting, and tailing returns to tail coal concentration basin (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558982.6A CN105583068A (en) | 2014-10-21 | 2014-10-21 | Magnetic tailings disposal system for middlings and gangue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558982.6A CN105583068A (en) | 2014-10-21 | 2014-10-21 | Magnetic tailings disposal system for middlings and gangue |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105583068A true CN105583068A (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410558982.6A Pending CN105583068A (en) | 2014-10-21 | 2014-10-21 | Magnetic tailings disposal system for middlings and gangue |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105583068A (en) |
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2014
- 2014-10-21 CN CN201410558982.6A patent/CN105583068A/en active Pending
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Application publication date: 20160518 |