CN109092550A - A kind of coarse-fine coal centrifugate recovery system and its recovery method - Google Patents
A kind of coarse-fine coal centrifugate recovery system and its recovery method Download PDFInfo
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- CN109092550A CN109092550A CN201811013056.5A CN201811013056A CN109092550A CN 109092550 A CN109092550 A CN 109092550A CN 201811013056 A CN201811013056 A CN 201811013056A CN 109092550 A CN109092550 A CN 109092550A
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- centrifugate
- hopper
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- fine coal
- flotation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
Abstract
A kind of coarse-fine coal centrifugate recovery system of the present invention and its recovery method, it will be via thickening and classifying cyclone group by set hopper, TBS hindered bed separator, sieve bend, the screenings and centrifugate that horizontal type scraper centrifuger and kaskad apparatus for pre-flotation pulp conditioning stepwise disposal obtain are collected, the screenings being collected into and centrifugate are delivered to classifying cyclone group overflow pipe by Pulp pump by hopper, kaskad apparatus for pre-flotation pulp conditioning is mixed into overflow material, the cleaned coal in screenings and centrifugate is selected by flotation, high ash thin mud drains into concentration basin by flotation tailing case, realize open circuit, prevent undersize material and centrifugate to recycle in systems repeatedly, coal slime is caused to gather, the problem of influencing grading and dehydration.
Description
Technical field
The invention belongs to Coal Washing Techniques fields, and in particular to a kind of coarse-fine coal centrifugate recovery system and its recycling side
Method.
Background technique
Coarse-fine coal recovery system is by thickening and classifying cyclone group, TBS hindered bed separator, desliming dehydration sieve bend, horizontal
Scraper centrifugal machine composition.Kaskad apparatus for pre-flotation pulp conditioning is removed in thickening and classifying cyclone group overflow, and TBS is removed in underflow；TBS hindered bed separator overflow
Into desliming dewatering screen, kaskad apparatus for pre-flotation pulp conditioning is removed in underflow；Dehydration desliming sieve bend oversize removes horizontal type scraper centrifuger, screenings into
Enter cleaned coal magnetic tail bucket and recycles sorting again；Horizontal type scraper centrifuger material does coarse-fine product of coal, and centrifugate enters cleaned coal magnetic tail bucket
Circulation sorting again, centrifugate and screenings turn row, the concentration of cyclone, the friction of the mechanical collision of impeller, pipeline pump
And under the action of the high centrifugal force inside cyclone, secondary slime amount is increased.And when extending the immersion of coal in water
Between, be further exacerbated by the argillization of coal slime, furthermore, this process generate coal slime be typically all superfine particle coal slime, it is not easily settled and
Filters pressing recycling, it is larger to harm to the system, seriously affect the sorting of the grading effect, TBS hindered bed separator of concentrate cyclone group
The dehydrating effect of effect, the separating effect of flotation device and subsequent product.
Summary of the invention
The purpose of the present invention is to provide a kind of coarse-fine coal centrifugate recovery system and its recovery methods, carry out to centrifugate
Recycling, with solve because centrifugate repetitive cycling caused by secondary mud amount increase, argillization phenomenon aggravation and to caused by system
Influence.
To achieve the goals above, the technical scheme adopted by the invention is as follows: a kind of coarse-fine coal centrifugate recovery system, packet
Hopper is included, centrifugate of the input terminal of the hopper respectively with the outlet of the screenings of sieve bend and horizontal type scraper centrifuger exports
End connection, for collecting obtained screenings and centrifugate；The output end of hopper is connected to the input terminal of kaskad apparatus for pre-flotation pulp conditioning.
Further, the output end of the hopper is connected to the overflow pipe of thickening and classifying cyclone group, connects via overflow pipe
Pass to kaskad apparatus for pre-flotation pulp conditioning.
Further, the hopper is arranged in back taper, and the top of hopper is arranged in input terminal, and output end setting is being expected
The bottom of case.
It further, further include the Pulp pump that the output end of hopper is set, the output end of Pulp pump is connected to concentration point
The overflow pipe of grade cyclone group.
Further, the input terminal of the sieve bend is connected to the overflow port of TBS hindered bed separator, for coming from
The coarse-fine coal of TBS hindered bed separator is carried out dehydrating；The input terminal of TBS hindered bed separator is connected to concentration classification eddy flow
The lower port of device group, wherein thickening and classifying cyclone group be used for cleaned coal magnetic tail carry out classification processing with obtain overflow product and
Underflow product, TBS hindered bed separator is for sorting the underflow product, to obtain coarse-fine coal and tail coal.
Further, the input terminal of the horizontal type scraper centrifuger is connected to the oversize outlet of sieve bend, for arc
The oversize of shape sieve is handled to obtain coarse-fine product of coal and centrifugate.
A kind of recovery method of coarse-fine coal centrifugate, comprising the following steps:
Step 1, by the hopper screenings that is obtained after sieve bend is handled of recycling and after horizontal type scraper centrifuger is handled
Obtained centrifugate, and the material of recycling is deposited to obtain deposit；
Step 2, the deposition material in step 1 in hopper is delivered to kaskad apparatus for pre-flotation pulp conditioning；
Step 3, the mixed material in kaskad apparatus for pre-flotation pulp conditioning is handled to obtain high ash thin mud and is recycled.
Further, the step 2 method particularly includes: by the way that the Pulp pump of hopper bottom is arranged in by object in hopper
Material is first delivered to the overflow pipe of thickening and classifying cyclone group, and material is delivered to ore pulp standard again after mixing with the overflow substance in overflow pipe
Standby device.
Further, the step 3 method particularly includes: the mixed material in kaskad apparatus for pre-flotation pulp conditioning is carried out by flotation device
Processing obtains high ash thin mud and is recycled by concentration basin.
Further, further include in the step 3, to the waste material obtained after the material processing in kaskad apparatus for pre-flotation pulp conditioning by adding
Pressure filter discharge system avoids waste material from being again introduced into cleaned coal magnetic tail bucket.
Compared with prior art, the present invention at least has following the utility model has the advantages that the present invention is by being arranged hopper to sieve bend
Screenings and the centrifugate of horizontal type scraper centrifuger recycled, the diameter in centrifugate is less than to the solid particle of 0.5mm
It is recycled, is transported to flotation device after recycling and is handled, so as to avoid the fine solid particles in centrifugate
The problem of entering system repeatedly circulation again by thickening and classifying cyclone group, coal slime caused to gather.
Further, the material in hopper is delivered to the overflow property management of thickening and classifying cyclone group, is mixed with overflow substance
Enter kaskad apparatus for pre-flotation pulp conditioning afterwards, it is ensured that the stabilization of flotation device pan feeding.
Further, hopper is arranged using back taper, and the material mixture liquid that can be will go into hopper is all delivered to
Kaskad apparatus for pre-flotation pulp conditioning avoids residual of the material in hopper and causes the blocking of hopper and be not thorough to material processing.
Detailed description of the invention
Fig. 1 is system structure diagram of the invention.
In figure: 1, thickening and classifying cyclone group, 2, TBS hindered bed separator, 3, sieve bend, 4, horizontal type scraper centrifuger,
5, kaskad apparatus for pre-flotation pulp conditioning, 6, flotation device, 7, hopper, 8, pressing filter, 9, concentration basin, 10, coarse-fine product of coal.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing.
As shown in Figure 1, a kind of coarse-fine coal centrifugate recovery system of the present invention, including thickening and classifying cyclone group 1, TBS are dry
Disturb a sorting machine 2, sieve bend 3, horizontal type scraper centrifuger 4, kaskad apparatus for pre-flotation pulp conditioning 5, Pulp pump, hopper 7, thickening and classifying cyclone group
1 upper port and lower port is respectively communicated with kaskad apparatus for pre-flotation pulp conditioning 5 and TBS hindered bed separator 2, TBS hindered bed separator 2
Overflow port and underflow port are respectively communicated with sieve bend 3 and kaskad apparatus for pre-flotation pulp conditioning 5, and the oversize outlet of sieve bend 3 and screenings go out
Mouth is respectively communicated with horizontal type scraper centrifuger 4 and hopper 7, and the centrifugate output end of horizontal type scraper centrifuger 4 is also connected to hopper 7, material
The bottom delivery outlet of case 7 is connected to kaskad apparatus for pre-flotation pulp conditioning 5 by Pulp pump, and the output end of kaskad apparatus for pre-flotation pulp conditioning 5 is connected separately with concentration basin 9
With pressing filter 8.
In a preferred embodiment of the invention, the model Xingren 150ZJ-I-A60 of Pulp pump, thickening and classifying cyclone group
The model 2400 of model FX500-CJTX4, TBS hindered bed separator, sieve bend model VSB162045, horizontal
The model WL1000 of scraper centrifugal machine, the model XY-3.5 of kaskad apparatus for pre-flotation pulp conditioning, flotation device model XJM-S16.
It is introduced below to the function of each component, the screening process of material and to the recovery method of centrifugate.
Thickening and classifying cyclone group 1 is classified slurries, and overflow product and underflow product, overflow product are obtained after classification
Into kaskad apparatus for pre-flotation pulp conditioning 5, underflow product enters TBS hindered bed separator 2, and TBS hindered bed separator 2 divides underflow product
Coarse-fine coal and tail coal are obtained after choosing, wherein tail coal is sent to kaskad apparatus for pre-flotation pulp conditioning 5, and the part pan feeding as flotation device 6 is sorted,
Flotation device 6 is the material that will be less than 0.5mm, will be hydrophobic by addition medicament according to the difference of coal and spoil surface nature
Cleaned coal closes hydrophilic spoil；Coarse-fine coal is sent to sieve bend 3 and is carried out dehydrating, and obtains oversize and screenings, obtains
Oversize is dehydrated by the horizontal type scraper centrifuger 4 of next stage, finally obtains coarse-fine product of coal；And pass through at sieve bend 3
The screenings obtained after reason and the centrifugate obtained after the processing of horizontal type scraper centrifuger 4 are sent to hopper 7, wherein centrifugate
The black water being made of the solids and water that are less than 0.5mm, since the solids granularity in centrifugate is respectively less than 0.5mm,
In routine techniques, centrifugate is sent to thickening and classifying cyclone group 1 and carries out the processing of classification again, constantly recycles, wherein being centrifuged
Solid particulate matter in liquid becomes smaller and smaller after multiple circulation, to be increasingly difficult to finally aggravate to separate and recycle
Argillization, to system causes biggish harm.In the present invention, a hopper 7 is arranged in this link to recycle centrifugate,
After hopper 7, the Pulp pump that the material in hopper 7 is connected 7 bottom of hopper is delivered to overflowing for thickening and classifying cyclone group 1
Flow tube, material enter kaskad apparatus for pre-flotation pulp conditioning 5 after mixing with the overflow substance in overflow pipe.Mixed material in kaskad apparatus for pre-flotation pulp conditioning 5 is sent
It is handled to flotation device 6, wherein the high ash thin mud in mixed material drains into concentration basin 9 by flotation tailing case and is recycled,
Other wastes are expelled directly out processing by pressing filter 8, setting in this way, so that centrifugate has exited original big follow
Ring has prevented thin mud aggregation phenomenon caused by internal circulation to realize open circuit, thus fundamentally having prevented because of centrifugation
Damage of the circulation of liquid to system.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than limitation ot it, for
For those skilled in the art, without departing from the inventive concept of the premise, several deformations, replacement can also be made and improved,
These are all within the scope of protection of the present invention.
Claims (10)
1. a kind of coarse-fine coal centrifugate recovery system, which is characterized in that including hopper (7), the input terminal of the hopper (7) is distinguished
It is connected to the centrifugate output end of the outlet of the screenings of sieve bend (3) and horizontal type scraper centrifuger (4), for obtained by collecting
Screenings and centrifugate；The output end of hopper (7) is connected to the input terminal of kaskad apparatus for pre-flotation pulp conditioning (5).
2. a kind of coarse-fine coal centrifugate recovery system as described in claim 1, which is characterized in that the output of the hopper (7)
End is connected to the overflow pipe of thickening and classifying cyclone group (1), is connected to kaskad apparatus for pre-flotation pulp conditioning (5) via overflow pipe.
3. a kind of coarse-fine coal centrifugate recovery system as described in claim 1, which is characterized in that the hopper (7) is in back taper
Shape setting, input terminal setting are arranged in the top of hopper (7), output end in the bottom of hopper (7).
4. a kind of coarse-fine coal centrifugate recovery system as claimed in claim 2, which is characterized in that further include being arranged in hopper
(7) Pulp pump of output end, the output end of Pulp pump are connected to the overflow pipe of thickening and classifying cyclone group (1).
5. a kind of coarse-fine coal centrifugate recovery system as described in claim 1, which is characterized in that the sieve bend (3) it is defeated
Enter the overflow port that end is connected to TBS hindered bed separator (2), for from TBS hindered bed separator (2) coarse-fine coal into
Row dehydration；The input terminal of TBS hindered bed separator (2) is connected to the lower port of thickening and classifying cyclone group (1), wherein
Thickening and classifying cyclone group (1) is used to carry out cleaned coal magnetic tail classification processing to obtain overflow product and underflow product, TBS interference
Bed sorting machine (2) is for sorting the underflow product, to obtain coarse-fine coal and tail coal.
6. a kind of coarse-fine coal centrifugate recovery system as described in claim 1, which is characterized in that the horizontal type scraper centrifuger
(4) input terminal is connected to the oversize outlet of sieve bend (3), thick for being handled to obtain to the oversize of sieve bend (3)
Head coal product and centrifugate.
7. a kind of recovery method based on coarse-fine coal centrifugate recovery system as claimed in any one of claims 1 to 6, feature exist
In, comprising the following steps:
Step 1, by hopper (7) recycle after sieve bend (3) processing obtained screenings and through horizontal type scraper centrifuger (4) at
The centrifugate obtained after reason, and the material of recycling is deposited to obtain deposit；
Step 2, the deposition material in hopper in step 1 (7) is delivered to kaskad apparatus for pre-flotation pulp conditioning (5)；
Step 3, the mixed material in kaskad apparatus for pre-flotation pulp conditioning (5) is handled to obtain high ash thin mud and is recycled by flotation device (6)
It utilizes.
8. a kind of recovery method of coarse-fine coal centrifugate as claimed in claim 7, which is characterized in that the step 2 it is specific
Method are as follows: the material in hopper (7) is first delivered to thickening and classifying cyclone group by the Pulp pump by setting in hopper (7) bottom
(1) overflow pipe, material are delivered to kaskad apparatus for pre-flotation pulp conditioning (5) again after mixing with the overflow substance in overflow pipe.
9. a kind of recovery method of coarse-fine coal centrifugate as claimed in claim 7, which is characterized in that the step 3 it is specific
Method are as follows: the mixed material in kaskad apparatus for pre-flotation pulp conditioning (5) is handled to obtain high ash thin mud by flotation device (6) and passes through concentration
Pond (9) recycling.
10. a kind of recovery method of coarse-fine coal centrifugate as claimed in claim 7, which is characterized in that also wrapped in the step 3
It includes, pressing filter (8) discharge system is passed through to the waste material obtained after the material processing in kaskad apparatus for pre-flotation pulp conditioning (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811013056.5A CN109092550A (en) | 2018-08-31 | 2018-08-31 | A kind of coarse-fine coal centrifugate recovery system and its recovery method |
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| CN201811013056.5A CN109092550A (en) | 2018-08-31 | 2018-08-31 | A kind of coarse-fine coal centrifugate recovery system and its recovery method |
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| CN103143432A (en) * | 2013-02-28 | 2013-06-12 | 中国矿业大学 | Efficient crushing and three-section type screening method of coking coal gravity middings |
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| CN103464272A (en) * | 2013-09-02 | 2013-12-25 | 山东科技大学 | Coarse coal slime two-section water medium sorting method |
| CN103639077A (en) * | 2013-11-28 | 2014-03-19 | 唐山森普工程设计有限公司 | Middings magnetic separator tailings classifying separation recovery system and middings magnetic separatortailings classifying separation recovery technology for dense medium coal preparation plant |
| CN104722389A (en) * | 2015-03-02 | 2015-06-24 | 中国矿业大学 | Dissociating, independent slurry mixing and bulk floatation process for fine grain middings |
| CN205851094U (en) * | 2016-06-24 | 2017-01-04 | 陕西陕煤黄陵矿业有限公司 | A kind of dehydration equipment of fine slime |
-
2018
- 2018-08-31 CN CN201811013056.5A patent/CN109092550A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143432A (en) * | 2013-02-28 | 2013-06-12 | 中国矿业大学 | Efficient crushing and three-section type screening method of coking coal gravity middings |
| CN103350027A (en) * | 2013-08-06 | 2013-10-16 | 煤炭科学研究总院唐山研究院 | Classified-desliming pressurized-feeding three-product dense medium cyclone coal preparation process |
| CN103464272A (en) * | 2013-09-02 | 2013-12-25 | 山东科技大学 | Coarse coal slime two-section water medium sorting method |
| CN103639077A (en) * | 2013-11-28 | 2014-03-19 | 唐山森普工程设计有限公司 | Middings magnetic separator tailings classifying separation recovery system and middings magnetic separatortailings classifying separation recovery technology for dense medium coal preparation plant |
| CN104722389A (en) * | 2015-03-02 | 2015-06-24 | 中国矿业大学 | Dissociating, independent slurry mixing and bulk floatation process for fine grain middings |
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Application publication date: 20181228 |