CN109092547A - Slime separation method and slime separation system - Google Patents
Slime separation method and slime separation system Download PDFInfo
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- CN109092547A CN109092547A CN201810924738.5A CN201810924738A CN109092547A CN 109092547 A CN109092547 A CN 109092547A CN 201810924738 A CN201810924738 A CN 201810924738A CN 109092547 A CN109092547 A CN 109092547A
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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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Abstract
The invention discloses a kind of slime separation method and slime separation system, slime separation method includes: classification and sorting, coarse medium slime sorting and coarse coal slurry sorting;Coal slime raw material cyclonic separation is gone out into small grain size coal slime and big granularity coal slime, the big granularity coal slime respectively obtain big density coal slime and small density coal slime after liquid fluidizes sorting admittedly;Big density coal slime is screened through high-frequency vibration, obtains coarse medium slime on sieve, screenings is dehydrated, filters pressing, finally obtains tail coal mud and recirculated water;Small density coal slime is concentrated, the solid obtained after concentration is screened, coarse coal slurry is obtained on sieve.Thus, not only coal slime raw material is sorted at least the above three kinds of coal slime products, and keep the granularity of coarse medium slime, coarse coal slurry density range more reasonable, so that be able to satisfy requirement, quality higher for coal slime product, and during slime separation, water flow constantly recycles, it is possible to reduce pollution of the slime separation to environment.
Description
Technical field
The present invention relates to slime separation technical fields, in particular to a kind of slime separation method and slime separation
System.
Background technique
In the related technology, it in order to be sorted to coal slime, needs more by classification and sorting, rough coal sorting, cleaned coal sorting etc.
To process, the coal slime for meeting requirement has been obtained.
But in above-mentioned operation, to the grading effect (screening i.e. in granularity) and separating effect (i.e. density of coal slime
On screening) it is poor, the quality of the coal slime after sorting is low, is unable to satisfy requirement.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of coal
Mud method for separating, the slime separation method are more preferable to coal slime raw material separating effect.
The present invention also proposes a kind of slime separation system using above-mentioned slime separation method.
According to a first aspect of the present invention the slime separation method of embodiment include: classification and sorting, coarse medium slime sorting and
Coarse coal slurry sorting;Coal slime raw material cyclonic separation is gone out small grain size coal slime and big granularity coal slime, the big granularity coal slime to consolidate through liquid
Big density coal slime and small density coal slime are respectively obtained after fluidisation sorting;Big density coal slime is screened through high-frequency vibration, is obtained on sieve
Coarse medium slime, screenings is dehydrated, filters pressing, finally obtains tail coal mud and recirculated water;Small density coal slime is concentrated, it is right
The solid obtained after concentration is screened, and coarse coal slurry is obtained on sieve.
Coal slime raw material is first carried out classification and sorting by slime separation method according to an embodiment of the present invention, and by classification and sorting
For coal slime raw material screening afterwards at coarse medium slime and coarse coal slurry and tail coal mud, and in assorting room, the water for sorting can
To recycle.In this way, not only by coal slime raw material sort at least the above three kinds of coal slime products, and make coarse medium slime granularity,
Coarse coal slurry density range is more reasonable, so as to be able to satisfy requirement, quality higher for coal slime product, and in coal slime point
During choosing, water flow is constantly recycled, it is possible to reduce pollution of the slime separation to environment.
It according to some embodiments of the present invention, will be in screenings obtained in coarse coal slurry sorting step and enrichment process
The liquid of generation sends to flotation.
In some embodiments, the slime separation method further includes cleaned coal flotation: will be obtained in classification and sorting step
Screenings obtained in small grain size coal slime, coarse coal slurry sorting step and the liquid of the generation in enrichment process are mixed together, and
Flotation is carried out, carries out filters pressing later, to obtain floatation clean coal after filters pressing, by the liquid reflux of filters pressing generation to mixed processes.
Further, it in coarse medium slime sorting step, is screened using high frequency shale shaker, is taken off using concentrator
Water carries out filters pressing using the first filter press;In coarse coal slurry sorting step, using concentrate cyclone to small density coal slime into
Row thickening screens the solid after concentration using linear vibrating screen;In flotation step, in kaskad apparatus for pre-flotation pulp conditioning
Screenings obtained in small grain size coal slime, coarse coal slurry sorting step is mixed with the liquid of the generation in enrichment process, is used
Column flotation carries out filters pressing using the second filter press.
According to some embodiments of the present invention, in classification and sorting step, using classifying and sorting device to coal slime raw material into
Row processing, classifying and sorting device includes: classifying cyclone, liquid-solid fluid bed, pan feeding pallet and decelerating barrier, the classification
Cyclone has classifying cyclone underflow opening, and the classifying cyclone underflow opening protrudes into feed chute, the liquid-solid fluid bed packet
The lamina tecti of lathe bed and the cover on the lathe bed is included, described liquid-solid fluid bed with sorting chamber, the pan feeding pallet is in institute
State liquid-solid fluid bed top and the liquid-solid fluid bed connection, the pan feeding pallet is located in the sorting chamber room, it is described enter
Material torr disk has the feed chute with the sorting chamber, common between the lamina tecti and the roof of the pan feeding pallet
Internal discharge gate is limited, is connected between the feed chute and the sorting chamber by internal discharge gate, the sorting chamber
Cross section be annular, the side wall of the lathe bed includes inner sidewall and lateral wall, and the pan feeding pallet is connected to the lathe bed
Inner sidewall, the decelerating barrier are protruded into the feed chute and are spaced apart with the bottom wall of the feed chute, and the decelerating barrier connects
Be connected to the lamina tecti, the decelerating barrier be radially positioned the classifying cyclone and the pan feeding pallet side wall it
Between.
Further, it is described it is liquid-solid fluid bed further include water supply pipe, the water supply pipe have be located at the sorting chamber
Indoor outlet pipe, the number of the outlet pipe be it is multiple, each outlet pipe along the lathe bed radially extend and it is multiple
The outlet pipe is uniformly distributed along the circumferential direction of the lathe bed, has multiple radial directions along the lathe bed successively on each outlet pipe
The water jet of distribution, distribution density is gradually increased the water jet on the outlet pipe from inside to outside.
According to some embodiments of the present invention, in classification and sorting step, using classifying and sorting device to coal slime raw material into
Row processing, classifying and sorting device include: classifying cyclone, conversion head and liquid-solid fluid bed, and the classifying cyclone has
There is conversion head import and conversion head to export for classifying cyclone underflow opening positioned at bottom, the conversion head, and the conversion head goes out
Mouth is connect with the classifying cyclone underflow opening, and the liquid-solid fluid bed lower part has water inlet, described liquid-solid fluid bed
Bottom has liquid-solid fluid bed underflow opening, and the liquid-solid fluid bed top has liquid-solid fluid bed overflow port, the classification rotation
Flow device and the conversion head described liquid-solid fluid bed and described classifying cyclone through the liquid-solid fluid bed overflow port insertion
Underflow opening, the conversion head import, the conversion head outlet be respectively positioned on it is described it is liquid-solid fluid bed in.
Further, conversion head is equipped with below the classifying cyclone underflow opening, the conversion head is including expansion pipe and only
Block piece, the stop part and expansion pipe limit conversion head outlet jointly, and the conversion head outlet is generally perpendicular to described
The axial direction of classifying cyclone, the stop part and the classifying cyclone and described any of liquid-solid fluid bed connect.
Further, the cross section of the conversion head outlet is in first increases and then decreases trend from up to down.
According to a second aspect of the present invention the slime separation system of embodiment include: coal slime storage device, classifying and sorting device,
Coarse medium slime screening plant, coarse coal slurry screening plant and cleaned coal flotation unit, the coal slime storage device is for storing coal
The discharge port of mud raw material, the coal slime storage device is connect with the feed inlet of the classifying cyclone, the classifying cyclone tool
There is discharger, the liquid-solid fluid bed bottom has underflow outlet, and the coarse medium slime screening plant includes high-frequency vibration
Sieve, concentrator and the first filter press, the high frequency shale shaker are suitable for sifting out coarse medium slime and supplying liquid after sieve to dense
Machine, the solid outlet of concentrator are connect with the first filter press, and the liquid outlet of the liquid outlet of concentrator and the first filter press
Connection, the solid outlet of the first filter press are suitable for discharge tail coal mud, the coarse coal slurry screening plant include concentrate cyclone with
And the linear vibrating screen connecting with the underflow opening of concentrate cyclone, the underflow opening of concentrate cyclone are connect with linear vibrating screen, directly
Linearly coupled sieve is suitable for sifting out coarse coal slurry, and the cleaned coal flotation unit includes kaskad apparatus for pre-flotation pulp conditioning, flotation column and the second filters pressing
Machine, the overflow port of liquid and concentrate cyclone, the discharger convergence of classifying cyclone and and ore pulp after the linear vibrating screen sieves
Prepare the feed inlet connection of device, the outlet of the kaskad apparatus for pre-flotation pulp conditioning connect with flotation column, the bottom outlet of the flotation column with it is described
The feed inlet of concentrator connects, and the overflow port of the flotation column is connected to the feed inlet of second filter press, second pressure
The solid outlet of filter is suitable for discharge floatation clean coal, the liquid outlet of second filter press be suitable for kaskad apparatus for pre-flotation pulp conditioning into
Material mouth connection.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the flow chart of slime separation method according to an embodiment of the present invention;
Fig. 2 is the cross-sectional view of classifying and sorting device according to a first embodiment of the present invention;
Fig. 3 is the top view of classifying and sorting device according to a first embodiment of the present invention;
Fig. 4 is the signal of the classifying cyclone and pan feeding pallet of classifying and sorting device according to a first embodiment of the present invention
Figure;
Fig. 5 is the signal of the liquid-solid fluid bed water supply pipe of classifying and sorting device according to a first embodiment of the present invention
Figure;
Fig. 6 is the schematic diagram of the liquid-solid fluid bed lathe bed of classifying and sorting device according to a first embodiment of the present invention;
Fig. 7 is the enlarged diagram of a-quadrant in Fig. 6;
Fig. 8 is the schematic diagram of the conical bottom wall of the lathe bed of classifying and sorting device according to a first embodiment of the present invention;
Fig. 9 is the device connection figure of slime separation system according to a first embodiment of the present invention;
Figure 10 is a kind of schematic diagram of classifying cyclone according to a second embodiment of the present invention;
Figure 11 is a kind of schematic diagram of the conversion head of classifying cyclone according to a second embodiment of the present invention;
Figure 12 is the partial enlargement diagram of B area in Figure 11;
Figure 13 is the main view of classifying and sorting device according to a second embodiment of the present invention;
Figure 14 is the top view of classifying and sorting device according to a second embodiment of the present invention;
Figure 15 is the device connection figure of slime separation system according to a second embodiment of the present invention.
Appended drawing reference:
In first embodiment:
Classifying and sorting device 100, classifying cyclone 110, liquid-solid fluid bed 120, pan feeding pallet 130, decelerating barrier 140,
Grafting protrusion 150, discharger 111, classifying cyclone underflow opening 112, classifying cyclone feed inlet 113, lathe bed 121, overflow launder
1211, conical bottom wall 1212, controller 122, pressure sensor 123, executing agency 124, compression bar 1241, water supply pipe 125,
Outlet pipe 1251, water jet 12511, lamina tecti 126, sorting chamber 127, underflow outlet 128, feed chute 131,
Coal slime storage device 200,
Coarse medium slime screening plant 300, high frequency shale shaker 310, concentrator 320, the first filter press 330,
Coarse coal slurry screening plant 400, concentrate cyclone 410, linear vibrating screen 420,
Cleaned coal flotation unit 500, kaskad apparatus for pre-flotation pulp conditioning 510, flotation column 520, the second filter press 530,
Pulp pump 600,
Coarse medium slime a, coarse coal slurry b, tail coal mud c, floatation clean coal d, recirculated water e.
In second embodiment:
Classifying and sorting device 100a, classifying cyclone 110a, cyclone body 111a, classifying cyclone underflow opening 112a,
Classifying cyclone overflow port 113a, classifying cyclone feed inlet 114a, liquid-solid fluid bed 120a, liquid-solid fluid bed underflow opening
121a, liquid-solid fluid bed overflow port 122a, conversion head 130a, stop part 131a, overhead gage 1311a, grafting protrusion 13111a,
Upper swivel nut 13112a, lower baffle plate 1312a, lower swivel nut 13121a expand pipe 132a, expansion end 1321a, conversion head import 133a,
Conversion head exports 134a, executing agency 140a, pressure sensor 141a, compression bar 142a,
Coal slime storage device 200,
Coarse medium slime screening plant 300, high frequency shale shaker 310, concentrator 320, the first filter press 330,
Coarse coal slurry screening plant 400, concentrate cyclone 410, linear vibrating screen 420,
Cleaned coal flotation unit 500, kaskad apparatus for pre-flotation pulp conditioning 510, flotation column 520, the second filter press 530,
Pulp pump 600,
Coarse medium slime a, coarse coal slurry b, tail coal mud c, floatation clean coal d, recirculated water e.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar unit or unit with the same or similar functions.Below with reference to
The embodiment of attached drawing description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
Slime separation method according to an embodiment of the present invention is described below with reference to Fig. 1 to Figure 15.
As shown in Figure 1, the slime separation method of embodiment includes: classification and sorting, thick middle coal according to a first aspect of the present invention
Mud a sorting and coarse coal slurry b sorting;Coal slime raw material cyclonic separation is gone out into small grain size coal slime and big granularity coal slime, big granularity coal
Mud respectively obtains big density coal slime and small density coal slime after liquid fluidizes sorting admittedly;Big density coal slime is screened through high-frequency vibration,
Obtain coarse medium slime a on sieve, screenings is dehydrated, filters pressing, finally obtains tail coal mud c and recirculated water;By small density coal slime into
Row concentration, screens the solid obtained after concentration, coarse coal slurry b is obtained on sieve.
Coal slime raw material is first carried out classification and sorting by slime separation method according to an embodiment of the present invention, and by classification and sorting
Coal slime raw material screening afterwards is at coarse medium slime a and coarse coal slurry b and tail coal mud c, and in assorting room, for sorting
Water can recycle.In this way, not only sorting coal slime raw material at least the above three kinds of coal slime products, and make coarse medium slime a's
Granularity, coarse coal slurry b density range are smaller, so as to be able to satisfy requirement, quality higher for coal slime product, and in coal slime
In assorting room, water flow is constantly recycled, it is possible to reduce pollution of the slime separation to environment.
In specific embodiment shown in Fig. 1, by screenings obtained in coarse coal slurry sorting step and enrichment process
In the liquid of generation send to flotation.In this way, the screenings in coarse coal slurry b sorting step is sent in flotation circuit, is incited somebody to action
Liquid in enrichment process is sent again makes the sorting of coal slime raw material more abundant to flotation circuit, to reduce the wave of coal slime raw material
Take.
Further, slime separation method further includes cleaned coal flotation: by small grain size coal slime obtained in classification and sorting step,
Screenings obtained in coarse coal slurry b sorting step and the liquid of the generation in enrichment process are mixed together, and carry out flotation,
Filters pressing is carried out, later to obtain floatation clean coal d, the liquid reflux that filters pressing generates to mixed processes after filters pressing.
That is, in cleaned coal floatation process, by coarse coal slurry b sorting step screenings, small grain size coal slime with
And the recirculated water generated during floatation clean coal is injected into kaskad apparatus for pre-flotation pulp conditioning 510 (i.e. mixed processes) together, and completes to mix
After conjunction, ore pulp is injected into filter press, to obtain floatation clean coal d.
In this way, stock utilization not only can be improved, allows coal slime raw material by sufficient classification, utilizes, and cleaned coal
The water generated in flotation step can directly be back to mixed processes, improve the utilization rate of water, reduce the wave of water resource
Take.
As shown in Figure 1, being screened using high frequency shale shaker 310, in coarse medium slime sorting step using concentrator
320 are dehydrated, and carry out filters pressing using the first filter press 330;In coarse coal slurry sorting step, using concentrate cyclone 410
Thickening is carried out to small density coal slime, is screened using the solid after 420 pairs of linear vibrating screen concentrations;In flotation step
In, it will be in screenings and enrichment process obtained in small grain size coal slime, coarse coal slurry sorting step in kaskad apparatus for pre-flotation pulp conditioning 510
The liquid mixing of generation utilize the second filter press 530 to carry out filters pressing using 520 flotation of flotation column.
In this way, through the above steps, available coarse medium slime a, tail coal mud c, coarse coal slurry b and flotation are smart respectively
Coal d keeps the classification of coal slime raw material more abundant, and the quality of various coal slimes and cleaned coal after classification is higher.
The slime separation method of the embodiment of the present invention is described in detail referring to Fig. 1 to Figure 15 with two specific embodiments.
In the first embodiment:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, according to some embodiments of the present invention, it in classification and sorting step, uses
Classifying and sorting device 100 handles coal slime raw material, and classifying and sorting device 100 includes: that classifying cyclone 110, liquid fluidize admittedly
Bed 120, pan feeding pallet 130 and decelerating barrier 140, classifying cyclone 110 have classifying cyclone underflow opening 112, classification rotation
Stream device underflow opening 112 protrudes into feed chute 131, and liquid-solid fluid bed 120 include the top cover of lathe bed 121 and the cover on lathe bed 121
Plate 126, liquid-solid fluid bed 120 have sorting chamber 127, and pan feeding pallet 130 flows on liquid-solid fluid bed 120 top with liquid admittedly
Change bed 120 connects, and pan feeding pallet 130 is located in sorting chamber 127, and pan feeding pallet 130 has and sorts what chamber 127 was connected to
Feed chute 131, limits internal discharge gate jointly between lamina tecti 126 and the roof of pan feeding pallet 130, feed chute 131 with point
It selects and is connected between chamber 127 by internal discharge gate;The cross section for sorting chamber 127 is annular, and the side wall of lathe bed 121 includes
Inner sidewall and lateral wall, pan feeding pallet 120 are connected to the inner sidewall of lathe bed 121, decelerating barrier 140 protrude into feed chute 131 and
It is spaced apart with the bottom wall of feed chute 131, decelerating barrier 140 is connected to lamina tecti 126, and decelerating barrier 140 is radially positioned point
Between grade cyclone 110 and the side wall of pan feeding pallet 130.
Specifically, classifying cyclone 110 is directly anchored to liquid-solid fluid bed 120 top by pan feeding pallet 130, with
It flows out coal slime raw material directly by classifying cyclone 110, and is flowed into liquid-solid fluid bed 120 by pan feeding pallet 130
In, conveyance conduit is set up to avoid between classifying cyclone 110 and liquid-solid fluid bed 120, reduces classifying and sorting device
100 space hold, and power consumption and material consumption are saved, reduce the sorting cost of a variety of coal slime products.
Wherein, classifying and sorting device 100 includes classifying cyclone 110, pan feeding pallet 130 and liquid-solid fluid bed 120.
Coal slime raw material is transported in classifying cyclone 110 by Pulp pump 600, in classifying cyclone 110, is realized to coal slime raw material
Centrifugal sedimentation so that small grain size coal slime is overflowed above classifying cyclone 110, big granularity coal slime is under classifying cyclone 110
Side's outflow, to be accommodated in pan feeding pallet 130 by the big granularity coal slime flowed out below classifying cyclone 110, and then by entering
Material torr disk 130 is flowed into liquid-solid fluid bed 120, and is sorted in liquid-solid fluid bed 120 as small density coal slime and big density
Coal slime.
It should be noted that in the assorting room of coal slime, the granularity (i.e. the granularity of coal slime particle) and coal slime of coal slime
Density have large effect to the sorting of coal slime.Therefore, the present invention by classifying cyclone 110 to the granularity of coal slime into
Coal slime raw material is classified into big granularity coal slime and small grain size coal slime two parts, and then passes through liquid-solid fluid bed 120 by row classification
Big granularity coal slime is further sorted, and by sorting at small density coal slime and big density coal slime two parts so that liquid
The particle size range of big granularity coal slime in solid fluid bed 120 is more concentrated, and is reduced granularity and is done to coal slime raw material effect of settling
It disturbs, keeps the delaminating deposition effect of the coal slime raw material in liquid-solid fluid bed 120 more preferable.
In specific embodiment shown in Fig. 4, classifying cyclone underflow opening 112 is protruded into feed chute 131.Exist as a result,
In the course of work of classifying and sorting device 100, the liquid higher than classifying cyclone underflow opening 112 could be formed in feed chute 131
Face forms air column to prevent air from entering in classifying cyclone 110, and then improves the former to coal slime of classifying cyclone 110
The grading effect of material.
It should be noted that classifying cyclone 110 generates vortex by rotation, to make coal slime former under the influence of centrifugal force
Material is graded, and in classification process, nearby pressure is lower than external atmosphere pressure, outside air to the central axis of classifying cyclone 110
Classifying cyclone 110 can be reduced by entering in classifying cyclone 110 through classifying cyclone underflow opening 112 and being formed as air column
Grading effect.
As shown in Figure 2 and Figure 4, grafting protrusion 150 is additionally provided in pan feeding pallet 130, grafting protrusion 150 is through being classified eddy flow
Device underflow opening 112 protrudes into classifying cyclone underflow opening 112 partially to stop classifying cyclone underflow opening 112.Specifically,
Multiple grafting protrusions 150 are provided in the circumferential direction of pan feeding pallet 130, grafting protrusion 150 passes through classifying cyclone underflow opening 112
To extend into classifying cyclone 110.The setting for passing through grafting protrusion 150 as a result, not only can further prevent air
The formation of column, and the big granularity coal slime being located in pan feeding pallet 130 can be prevented in classifying cyclone 110 and extraneous pressure
It under the action of power difference, flows back into classifying cyclone 110, to be effectively prevented from the appearance of suck-back phenomenon, improves classifying cyclone
110 job stability.
In Fig. 2, Fig. 3, specific embodiment shown in Fig. 4, classifying and sorting device 100 further includes decelerating barrier 150,
Decelerating barrier 150 is protruded into feed chute 131 and is spaced apart with the bottom wall of feed chute 131, and decelerating barrier 150 is radially positioned
Between classifying cyclone 110 and the side wall of pan feeding pallet 130.
Specifically, the top of feed chute 131, the bottom wall of decelerating barrier 150 and feed chute 131 is arranged in decelerating barrier 150
Between the space that limits and the region where decelerating barrier 150 and classifying cyclone 110 be formed as being decelerated baffle 150
Two layers of the feed chute 131 of separation, and be connection between two layers.
It can not only be held as a result, by pan feeding pallet 130 and buffer the big grain flowed out by classifying cyclone underflow opening 112
Coal slime is spent, and preliminary flow velocity can be carried out to big granularity coal slime by decelerating barrier 150 and cut down, and pass through feed chute 131
Outer wall the flow velocity of big granularity coal slime is further cut down, so as to be flowed into through pan feeding pallet 130 liquid-solid fluid bed
The flow velocity of big granularity coal slime in 120 is lower, and enters big granularity coal slime level stream in liquid-solid fluid bed 120, big to reduce
Impact of the granularity coal slime to liquid-solid fluid bed 120.
It is existing to the pan feeding mode for adding big granularity coal slime in liquid-solid fluid bed 120 to be here it is possible to understand
Big granularity coal slime (is directly added to liquid in liquid-solid fluid bed 120 top to fluidize admittedly in a manner of near vertical by heart pan feeding
In bed 120), it will lead to big granularity coal slime to liquid-solid fluid bed 120 impact, and then reduce liquid-solid fluid bed 120 sorting effect
Fruit.
As shown in figure 4, liquid-solid fluid bed 120 include lathe bed 121 and lamina tecti 126, pan feeding pallet 130 is located at sorting
In chamber 127, internal discharge gate, feed chute 131 and sorting chamber are limited between lamina tecti 126 and pan feeding pallet 130 jointly
It is connected between 127 by internal discharge gate.In this way, can not only pass through the top of 126 the cover of lamina tecti liquid-solid fluid bed 120
Entrance to prevent small grain size coal slime or unassorted coal slime from entering in liquid-solid fluid bed 120, and can pass through top cover
Plate 126 keeps the flow for the big granularity coal slime being drained into liquid-solid fluid bed 120 in feed chute 131 more stable.
Further, the axial direction for extending perpendicularly to sorting chamber 127 of internal discharge gate.It is liquid-solid fluid bed as a result,
120 intermediate region limits internal discharge gate, to facilitate the arrangement of feed chute 131, makes each in classifying and sorting device 100
The spatial distribution of component is more reasonable.
As shown in Fig. 2, the number of classifying cyclone 110 be it is multiple, decelerating barrier 150 be annular, multiple classifying cyclones
110 are distributed in the inside of decelerating barrier 150.Thus, it is possible to according to the production needs of classifying and sorting device 100, in decelerating barrier
Multiple classifying cyclones 110 are arranged in 150 inside so that the productivity of classifying cyclone 110 with liquid-solid fluid bed 120 life
Force of labor matches, and then production capacity is avoided to waste, and improves production efficiency, reduces cost.
As shown in figure 3, the number of classifying cyclone 110 be it is multiple, decelerating barrier 150 be annular, multiple classifying cyclones
110 is uniformly distributed on the inside of decelerating barrier 150.In this way, can be arranged in the annular region that the decelerating barrier 150 of annular limits
Multiple classifying cyclones 110, so that the coal slime product that multiple classifying cyclones 110 are classified can satisfy liquid-solid fluid bed 120
Production need so that between multiple classifying cyclones 110 and liquid-solid fluid bed 120 productivity collocation it is more reasonable, improve
The production efficiency of unit time internal classification sorting unit 100.
As shown in Fig. 2, Fig. 6, Fig. 7 and Fig. 8, liquid-solid fluid bed 120 include: lathe bed 121, and sorting is limited in lathe bed 121
Chamber 127, the open top of lathe bed 121 are simultaneously formed with overflow launder 1211, and overflow launder 1211 has material overflow port, pan feeding pallet 130
It is connect in the inner wall of lathe bed 121 with lathe bed 121, lathe bed 121 includes annular inner sidewall, lateral wall and is connected to interior
Multiple conical bottom walls 1212 between side wall and lateral wall, multiple conical bottom walls 1212 are uniformly distributed along the circumferential direction of lathe bed 121, each
The bottom of conical bottom wall 1212 has underflow outlet 128.
Specifically, big granularity coal slime is sorted into small density coal slime and big density coal slime two in liquid-solid fluid bed 120
Part, small density coal slime are flowed into overflow launder 1211 along the upper end of lathe bed 121, and are discharged by material overflow port, big density coal
Mud is deposited in the centrum that multiple conical bottom walls 1212 limit.In this way, being deposited on big density coal slime in multiple centrums, no
Only make the deposition effect of big density coal slime more preferable, and increase the dehydration area of the big density coal slime in unit volume, makes big
Faster, dehydrating effect is more preferable for density coal slime dewatering, to improve liquid-solid fluid bed 120 dehydration efficiency.
As shown in Figures 2 and 3, liquid-solid fluid bed 120 further include: controller 122, pressure sensor 123 and execution machine
Structure 124, pressure sensor 123 are set in sorting chamber 127, and pressure sensor 123 is electrically connected with by pressure with controller 122
Information is sent to controller 122, and executing agency 124 has compression bar 1241, and a part of compression bar 1241 protrudes into sorting chamber 127
Interior and block underflow outlet 128, controller 122 is electrically connected with executing agency 124, with when pressure is more than preset value driving hold
Row mechanism 124 acts and lifts compression bar 1241 from underflow outlet 128.
In this way, can by multiple pressure sensors 123 with to sorting chamber 127 in pressure carry out real-time measurement, with
When sorting 127 some region of hypertonia of chamber, make the accordingly unlatching of underflow outlet 128, so that in sorting chamber 127
Pressure distribution it is more uniform, and then keep the distribution of big density coal slime liquid-solid fluid bed 120 inside more uniform, reduction bed
It is laminated fluctuation, keeps liquid-solid fluid bed 120 separating effect more ideal.
In specific embodiment shown in Fig. 5, liquid-solid fluid bed 120 further include water supply pipe 125, water supply pipe 125
With the outlet pipe 1251 being located in sorting chamber 127, the number of outlet pipe 1251 be it is multiple, each outlet pipe 1251 is along bed
Body 121 radially extend and multiple outlet pipes 1251 are uniformly distributed along the circumferential direction of lathe bed 121, have on each outlet pipe 1251 multiple
The water jet 12511 being sequentially distributed along the radial direction of lathe bed 121, the water jet 12511 on outlet pipe 1251 are distributed close from inside to outside
Degree is gradually increased.
In this way, not only outlet pipe 1251 radially distributed in sorting chamber 127 makes to be formed in sorting chamber 127
Even ascending current, and the water jet 12511 that density is gradually increased from inside to outside can effectively buffer pan feeding impact, into
And keep the flow velocity of the ascending current in liquid-solid fluid bed 120 pan feeding region consistent with the ascending current flow velocity in remaining region, in turn
Keep liquid-solid fluid bed 120 efficiency of separation more stable, job stability is higher.
To sum up, pass through the setting of the classifying and sorting device in first embodiment, the slime separation method of the embodiment of the present invention
It can achieve following beneficial effect.
(1) make to form good working environment inside classifying cyclone 110, be effectively prevented the generation of air column, and prevent
The only appearance of suck-back phenomenon improves the grading effect of classifying cyclone 110.
(2) flow velocity that coal slime flows to liquid-solid fluid bed 120 is reduced by pan feeding pallet 130 and decelerating barrier 150, and
It is allowed to flow into liquid-solid fluid bed 120 in the horizontal direction, to reduce impact of the big granularity coal slime to liquid-solid fluid bed 120, improves liquid
Solid fluid bed 120 separating effect.
(3) multiple classifying cyclones 110 can be arranged, so that liquid flows admittedly according to liquid-solid fluid bed 120 separation velocity
Change bed 120 and the production collocation of classifying cyclone 110 is more reasonable, improves production efficiency, reduce production capacity waste.
(4) multiple pressure sensors 123, compression bar 1241 and the setting of executing agency 124 make the pressure for sorting chamber 127
Power distribution is more uniform, and then the material for making to sort in chamber 127 is distributed more uniform, the bed density phase one of each region
It causes, so that liquid-solid fluid bed 120 separating effect keeps stable, reliable.
(5) by the setting of multiple conical bottom walls 1212 below sorting chamber 127, make big density coal slime unit volume
Interior dehydration area is bigger, to effectively improve the dehydration efficiency of big density coal slime.
In a second embodiment:
As shown in Figure 13 and Figure 14, according to some embodiments of the present invention, in classification and sorting step, using classification point
Screening device handles coal slime raw material, and classifying and sorting device 100a includes: classifying cyclone 110a, liquid-solid fluid bed 120a
And conversion head 130a, classifying cyclone 110a have classifying cyclone underflow opening 112a, conversion head the 130a tool positioned at bottom
There are conversion head import 133a and conversion head outlet 134a, conversion head outlet 134a is connect with classifying cyclone underflow opening 112a, liquid
The lower part of solid fluid bed 120a has water inlet, and the bottom of liquid-solid fluid bed 120a has liquid-solid fluid bed underflow opening 121a, liquid
The top of solid fluid bed 120a has liquid-solid fluid bed overflow port 122a, and classifying cyclone 110a and conversion head 130a are passed through
Liquid-solid fluid bed overflow port 122a is inserted into liquid-solid fluid bed 120a and classifying cyclone underflow opening 111a, conversion head import 133a
And conversion head outlet 134a is respectively positioned in liquid-solid fluid bed 120a.
Specifically, the assorting room of classifying and sorting device 100a is as follows, and classifying cyclone 110a carries out grain to coal slime raw material
Classification on degree, the lesser coal slime raw material of granularity are flowed via the classifying cyclone overflow port 113a above classifying cyclone 110a
Classifying cyclone 110a out, the biggish coal slime raw material of granularity are flowed into liquid-solid fluid bed by classifying cyclone underflow opening 112a
In 120a, and the classification in liquid-solid fluid bed 120a in progress density, the lower coal slime raw material of density is via liquid-solid fluid bed
Overflow port 122a overflows, and the higher coal slime deposits materials of density are in the liquid-solid fluid bed bottom 120a, and liquid-solid fluid bed 120
When base pressure is larger, under the action of executing agency 140a, make the coal slime raw material warp for being deposited on the liquid-solid fluid bed bottom 120a
It is flowed out by liquid-solid fluid bed underflow opening 121a.
In turn, existing classifying and sorting device 100a is in the assorting room of above-mentioned coal slime raw material, firstly, classification eddy flow
Device 110a is easy to appear air column in classification process, secondly, being classified the coal slime raw material needs of completion in classifying cyclone 110a
Through pipeline transportation into liquid-solid fluid bed 120a and transport pipeline is longer, not only air column makes point of classifying cyclone 110a
Stage efficiency reduces, and longer transport pipeline, and material consumption, energy consumption and the space increased in coal slime raw material sorting work accounts for
With.But the classifying cyclone underflow opening 112a of the classifying and sorting device 100a in the present embodiment passes through liquid-solid fluid bed overflow
Mouth 122a is inserted into liquid-solid fluid bed 120a.
Classifying and sorting device 100a according to an embodiment of the present invention, classifying cyclone 110a are mounted on liquid and fluidize admittedly as a result,
The top of bed 120a, and is connected by liquid-solid fluid bed overflow port 122a with liquid-solid fluid bed 120a, not only classifying cyclone
Underflow opening 112a is located in liquid-solid fluid bed 120a, classifying cyclone 110a can be made to form fluid-tight condition, to avoid air column
Generation, to improve the classification efficiency of classifying cyclone 110a, and through classifying cyclone underflow in classifying cyclone 110a
The big granularity coal slime of mouth 112a outflow can enter directly into liquid-solid fluid bed 120a, the fortune for big granularity coal slime that no setting is required
Defeated pipeline thereby reduces the space hold of classifying and sorting device 100a, save production power consumption and material consumption, with power consumption with
Two aspect of material consumption reduces the sorting cost of coal slime raw material.
It is made of it should be noted that executing agency 140a refers to pressure sensor 141a and compression bar 142a, in liquid
When pressure is more than setting value in solid fluid bed 120a, make the mechanism of liquid-solid fluid bed underflow opening 121a unlatching.
In addition, as shown in Figure 10, classifying cyclone 110a according to an embodiment of the present invention includes: cyclone body 111a,
Cyclone body 111a has classifying cyclone feed inlet 114a, classifying cyclone overflow port 113a and classifying cyclone underflow
The classifying cyclone underflow opening 112a of mouth 112a, conversion head import 133a and classifying cyclone 110a are connect, conversion head 130a's
Conversion head, which exports 134a and conversion head import 133a, has angle.
In this way, making the classifying cyclone underflow opening of the conversion head import 133a and cyclone body 111a of conversion head 130a
112a (i.e. the underflow opening of cyclone body 111a) connection, not only make conversion head 130a cyclone body 111a lower section with
Cyclone body 111a connection when can reduce classifying cyclone 110a work, generates empty in the inside of cyclone body 111a
The probability of air column, to improve the classification efficiency of classifying cyclone 110a, and conversion head outlet 134a and conversion head import
There is angle between 133a, thus after coal slurry stream outflow classifying cyclone underflow opening 112a, followed by conversion head import
133a, conversion head export 134a, and export 134a by conversion head and flow out classifying cyclone 110a, to export in conversion head
Between 134a and conversion head import 133a, coal slurry stream is buffered by the inner wall of conversion head 130a, the stream of coal slurry stream can be reduced
Speed, to weaken impact to subsequent processing device after coal slime outflow classifying cyclone 110a.
In specific embodiment shown in Fig. 10, it is equipped with conversion head 130a below classifying cyclone underflow opening 112a, turns
Changing a 130a includes expanding pipe 132a and stop part 131a, and the side wall of stop part 131a and expansion pipe 132a limit jointly to be turned
Head outlet 134a is changed, conversion head exports 134a and revolves generally perpendicular to the axial direction of classifying cyclone 110a, stop part 131a and classification
Flow any of device 110a and liquid-solid fluid bed 120a connection.
The big granularity coal slime of classifying cyclone underflow opening 112a outflow can export 134a by conversion head and be flowed into as a result,
In liquid-solid fluid bed 120a, and during coal slime flows into liquid-solid fluid bed 120a, can by stop part 131a with
And expansion pipe 132a buffers coal slurry stream, to reduce the flow velocity of big granularity coal slime, to keep big granularity coal slime more steady
Be flowed into liquid-solid fluid bed 120a, to reduce impact of the big granularity coal slime to liquid-solid fluid bed 120a, and then reduce big grain
Influence of the impact of degree coal slime to the separating effect of liquid-solid fluid bed 120a, so that the separating effect of liquid-solid fluid bed 120a is more
It is good.
The working principle of classifying cyclone 110a is as follows: coal slime raw material enters classification by classifying cyclone feed inlet 114a
In the cyclone body 111a of cyclone 110a, higher centrifugal force, and then small grain size coal slime are generated in cyclone body 111a
It is moved upward under centrifugal force drive, and classifying cyclone 110a, big granularity coal slime is overflowed by classifying cyclone overflow port 113a
It deposits downwards and is flowed towards classifying cyclone underflow opening 112a, flow out the big granularity coal slime of classifying cyclone underflow opening 112a
Stop part 131a is entered by conversion head import 133a and is expanded in the chamber between pipe 132a, and 134a is exported by conversion head
Outflow reduces flowing velocity by stop part 131a during outflow and changes the direction of motion, to complete to coal slime raw material
Classification process.
As shown in Figure 10 and Figure 11, the conversion head outlet 134a of conversion head 130a is arranged perpendicular to import.That is,
Under the action of conversion head 130a, the coal slurry stream of outflow cyclone body 111a can be by the flow transition Cheng Jing of axial direction
Flowing to direction to reduce impact of the underflow of classifying cyclone 110a to bed in liquid-solid fluid bed 120a, and can make
The underflow of classifying cyclone 110a uniformly, rapidly disperses in liquid-solid fluid bed 120a.
As shown in figure 11, conversion head 130a includes expansion pipe 132a and stop part 131a, and expansion pipe 132a has tubaeform
Expansion end 1321a, stop part 131a connect with expansion end 1321a, limits between stop part 131a and expansion end 1321a
The conversion head of conversion head 130a exports 134a.
Specifically, expansion pipe 132a is connect with the outer wall of cyclone body 111a, stop part 131a is located at expansion pipe
The lower section of 132a, and the expansion end 1321a for expanding pipe 132a is fixed on by bolt and nut.
In this way, increasing the area of passage of conversion head 130a, and then tubaeform expansion by setting expansion pipe 132a
End 1321a can tentatively reduce the axial velocity of coal slurry stream, and by limiting between stop part 131a and expansion end 1321a
The conversion head outlet 134a of conversion head 130a further decrease the axial velocity of coal slurry stream, while exporting 134a from conversion head
The coal slurry stream of outflow has a certain size radial velocity, and it is rapidly equal in the bed of liquid-solid fluid bed 120a to be conducive to it
Even distribution.
In the specific embodiment shown in Figure 11, one end of the direction expansion pipe 132a of stop part 131a has insertion
The grafting protrusion 13111a in pipe 132a is expanded, grafting protrusion 13111a is extending at least partially into classifying cyclone underflow opening 112a
It is interior.The grafting protrusion 13111a being inserted into the classifying cyclone underflow opening 112a of cyclone body 111a as a result, can be prevented
The hypotony of the central area classifying cyclone underflow opening 112a inhales the coal slurry stream of the lower part classifying cyclone underflow opening 112a
The appearance of phenomenon inside swirling flow device ontology 111a, and further eliminate the generation of air column.
Optionally, one end away from expansion pipe 132a of stop part 131a is the taper gradually tapered up from inside to outside.As a result,
Keep the surface of stop part 131a rounder and more smooth, uniformly, to reduce blocking of the stop part 131a to coal slurry stream, and then effectively prevents
The only accumulation of the conversion head outlet region 134a coal slurry stream, to further improve classification efficiency.
As shown in figure 11, stop part 131a includes overhead gage 1311a and lower baffle plate 1312a, lower baffle plate 1312a and upper gear
Plate 1311a is detachably connected, and overhead gage 1311a is oppositely arranged and connect with expansion pipe 132a, and limits turn between the two
Change head outlet 134a.Wherein, it expands and limits conversion head outlet between the inner wall of pipe 132a and the outer wall of overhead gage 1311a
134a, and connect and can be adjusted between overhead gage 1311a and expansion pipe 132a.The not only shape of overhead gage 1311a as a result,
Coal slurry stream can be oriented to, the axial flowing of coal slurry stream is made to be transformed into Radial Flow, and reduce the axial speed of coal slurry stream
Degree improves the radial velocity of coal slurry stream, and can be by adjusting overhead gage 1311a and expanding the connection spiral shell between pipe 132a
Bolt to increase or decrease the velocity of discharge of coal slurry stream, and then makes to be classified eddy flow to adjust the size of conversion head outlet 134a
Device 110a meets requirement.
Further, the upper surface of overhead gage 1311a and the lower end surface of lower baffle plate 1312a are formed as stop part 131a's
Outer surface, upper surface and lower end surface are fusiform curved surface.Wherein, the upper surface of overhead gage 1311a is streamlined, can be with
Big granularity coal slime is reduced in the accumulation in the conversion head outlet region 134a, and further the flow direction of coal slurry stream is led
To the lower end surface of lower baffle plate 1312a is streamlined, can reduce lower end surface to the ascending current in liquid-solid fluid bed 120a
Interference.
As shown in figure 11, overhead gage 1311a and lower baffle plate 1312a limits closed chamber jointly, overhead gage 1311a's
Lower end is equipped with upper swivel nut 13112a, and the upper end of lower baffle plate 1312a is equipped with lower swivel nut 13121a, upper swivel nut 13112a and lower swivel nut
13121a threaded and both be located at closed chamber in.In this way, can not only make stop part 131a structural strength and
Structural stability is higher, and can prevent the ascending current in liquid-solid fluid bed 120a from entering stop part 131a and expansion
The chamber interior that pipe 132 surrounds keeps the job stability of stop part 131a higher.
In some embodiments, stop part 131a and any of classifying cyclone 110a and liquid-solid fluid bed 120a
Connection.In other words, stop part 131a can connect with classifying cyclone 110a and be installed on liquid-solid fluid bed 120a, or
Stop part 131a is connect with liquid-solid fluid bed 120a, and classifying cyclone 110a is plugged on stop part 131a.
That is, in some embodiments, stop part 131a can integrate processing with classifying cyclone 110a, another
Stop part 130a can be with the integrated processing of liquid-solid fluid bed 120a in some embodiments.
In the specific embodiment shown in Figure 13, one end of the direction expansion pipe 132a of stop part 131a has insertion
Grafting protrusion 13111a in classifying cyclone underflow opening 112a, and one end away from expansion pipe 13111a of stop part 131a
For the taper gradually tapered up from inside to outside.Specifically, grafting protrusion 13111a is at least partially extend into classifying cyclone underflow
Mouth 112a.In this way, the eradicating efficacy of the air column in classifying cyclone 110a can be further improved, prevent influent solid
The big granularity coal slime of fluidized bed 120a flows back into classification eddy flow due to the hypotony in the region classifying cyclone underflow opening 112a
Phenomenon in device 110a occurs, and provides motion guide to flow out the coal slime of classifying cyclone underflow opening 112a, increases big granularity
The radial flow speed of coal slime reduces the axial flow velocity of big granularity coal slime, so that big granularity coal slime is fast in liquid-solid fluid bed 120a
Speed is equably spread, and then improves the efficiency of separation.
Further, the cross section of conversion head outlet 134a is in first increases and then decreases trend from up to down.It can make in this way
Reduced by the radial velocity of the big granularity coal slime of classifying cyclone underflow opening 112a outflow, radial velocity increases, effectively to drop
Impact of the low big granularity coal slime to liquid-solid fluid bed 120a, and make big granularity coal slime can be quick in liquid-solid fluid bed 120a
Ground is uniformly distributed, to further improve the separating effect of liquid-solid fluid bed 120a.
As shown in figure 12, stop part 131a includes overhead gage 1311a and lower baffle plate 1312a, the upper end of overhead gage 1311a
Face and the lower end surface of lower baffle plate 1312a are formed as the outer surface of stop part 131a, and upper surface and lower end surface are fusiform song
Face.
Wherein, there is ascending current, to carry out density to big granularity coal slime by ascending current in liquid-solid fluid bed 120a
On sorting, and make small density coal slime under the action of ascending current, overflowed via liquid-solid fluid bed overflow port 122a, in turn
Stop part 131a can be effectively reduced at streamlined in the lower end surface of the upper surface and lower baffle plate 132a that make overhead gage 131a
The disturbance of resistance and stop part 131a to ascending current to ascending current, so that the flow velocity loss of ascending current is less, with
Improve the separating effect of liquid-solid fluid bed 120a.
As shown in figure 12, there is the screw thread worked in coordination on overhead gage 1311a and lower baffle plate 1312a, the two passes through screw thread
Connection is to collectively constitute stop part 131a.
Further, classifying cyclone 110a connect with liquid-solid fluid bed 120a or be placed in liquid-solid fluid bed 120a
The maintenance channel of top connects.Classifying cyclone 110a is directly connect with liquid-solid fluid bed 120a as a result, fills classification and sorting
The assembly for setting 100a is simpler, conveniently, and classifying cyclone 110a and the maintenance channel that is located above liquid-solid fluid bed 120a
Connection keeps the replacement of classifying cyclone 110a and maintenance simpler, conveniently.
The slime separation system of embodiment includes: coal slime storage device 200, classification and sorting dress according to a second aspect of the present invention
Set 100, coarse medium slime screening plant 300, coarse coal slurry screening plant 400 and cleaned coal flotation unit 500, coal slime storage dress
200 are set for storing coal slime raw material, the discharge port of coal slime storage device 100 is connect with the feed inlet of classifying cyclone 110, point
Grade cyclone 110 has discharger, and liquid-solid fluid bed 120 bottom has underflow outlet, and coarse medium slime screening plant 300 wraps
High frequency shale shaker 310, concentrator 320 and the first filter press 330 are included, high frequency shale shaker 310 is suitable for sifting out coarse medium slime and will
Liquid is supplied to concentrator 320 after sieve, and the solid outlet of concentrator 320 is connect with the first filter press 330, and concentrator 320
Liquid outlet is connect with the liquid outlet of the first filter press 330, and the solid outlet of the first filter press 330 is suitable for discharge tail coal mud,
Coarse coal slurry screening plant 400 includes concentrate cyclone 410 and the straight line connecting with the underflow opening of concentrate cyclone 410 vibration
Dynamic sieve 420, the underflow opening of concentrate cyclone 410 is connect with linear vibrating screen 420, and linear vibrating screen 420 is suitable for sifting out coarse-fine coal
Mud, cleaned coal flotation unit 500 include kaskad apparatus for pre-flotation pulp conditioning 510, flotation column 520 and the second filter press 530, linear vibrating screen 520
The overflow port of liquid and concentrate cyclone 410 after sieve, classifying cyclone 110 discharger convergence and with kaskad apparatus for pre-flotation pulp conditioning 510
Feed inlet connection, the outlet of kaskad apparatus for pre-flotation pulp conditioning 510 are connect with flotation column 520, bottom outlet and the concentrator 320 of flotation column 520
Feed inlet connection, the overflow port of flotation column 520 are connected to the feed inlet of the second filter press 530, the solid of the second filter press 530
Outlet is suitable for discharge floatation clean coal, and the liquid outlet of the second filter press 530 is suitable for being connected to the feed inlet of kaskad apparatus for pre-flotation pulp conditioning 510.
Specifically, coal slime storage device 200 is for storing coal slime raw material, the discharge port of coal slime storage device 200 with point
Grade cyclone feed inlet 113 connects, and classifying cyclone 110 has discharger 111, and liquid-solid fluid bed 120 bottom has underflow
Outlet 128.
Coarse medium slime screening plant 300 includes high frequency shale shaker 310, concentrator 320 and the first filter press 330, high frequency
Vibrating screen 310 is suitable for sifting out coarse medium slime a and supplies liquid after sieve to concentrator 320, the solid outlet of concentrator 320 with
The connection of first filter press 330, and the liquid outlet of concentrator 320 is connect with the liquid outlet of the first filter press 330, the first pressure
The solid outlet of filter 330 is suitable for discharge tail coal mud c.
Coarse coal slurry screening plant 400 includes concentrate cyclone 410 and connect with the underflow opening of concentrate cyclone 410
The underflow opening of linear vibrating screen 420, concentrate cyclone 410 is connect with linear vibrating screen 420, and linear vibrating screen 420 is suitable for sifting out
Coarse coal slurry b.
Cleaned coal flotation unit 500 includes kaskad apparatus for pre-flotation pulp conditioning 510, flotation column 520 and the second filter press 530, straight-line oscillation
After 420 sieve of sieve the convergence of discharger 111 of the overflow port, classifying cyclone 110 of liquid and concentrate cyclone 410 and with ore pulp standard
The feed inlet of standby device 510 is connected to, and the outlet of kaskad apparatus for pre-flotation pulp conditioning 510 is connect with flotation column 520, the bottom outlet of flotation column 520 with it is dense
The feed inlet of close machine 320 connects, and the overflow port of flotation column 520 is connected to the feed inlet of the second filter press 530, the second filter press
530 solid outlet is suitable for discharge floatation clean coal d, and the liquid outlet of filter press is suitable for connecting with the feed inlet of kaskad apparatus for pre-flotation pulp conditioning 510
It is logical.
Coal slime is supplied in classifying and sorting device 100 by coal slime storage device 200 as a result, and classifying and sorting device 100 will
After slime separation classification, it is fed separately to coarse medium slime screening plant 300, coarse coal slurry screening plant 400 and cleaned coal flotation
Device 500 can effectively improve coal slime to respectively obtain coarse medium slime a, coarse coal slurry b, tail coal mud c and floatation clean coal d
The efficiency of separation of separation system, and improve sorting quality.
Slime separation method of the invention and slime separation system are carried out referring to Fig. 1, Fig. 9 and Figure 15 detailed
Explanation.
First embodiment:
As shown in Figure 1, slime separation system includes coal slime storage device 200, coal slime classifying and sorting device 100, thick middle coal
Mud screening plant 300, smart coarse medium slime screening plant 400 and cleaned coal flotation unit 500.
Wherein, coal slime classifying and sorting device 100 is by classifying cyclone 110, liquid-solid fluid bed 120 and pan feeding pallet 130
Composition;Coarse medium slime screening plant 300 is made of high frequency shale shaker 310, concentrator 320 and the first filter press 330;It is coarse-fine
Coal slime screening plant 400 is made of concentrate cyclone 410 and linear vibrating screen 420;Cleaned coal flotation unit 500 is prepared by ore pulp
Device 510, flotation column 520 and the second filter press 530 composition.
As shown in figure 9, slime separation method is to inject ascending current in liquid-solid fluid bed 120, until liquid-solid fluid bed 120
It is middle to be formed after uncertain ascending current and after ascending current do not had classifying cyclone underflow opening 112.Make coal slime storage device 200
The coal slime raw material of interior storage is flowed into classifying cyclone 110, in classifying cyclone 110 under the action of Pulp pump 600
It is classified into big granularity coal slime and small grain size coal slime, small grain size coal slime flows through the discharger 111 of classifying cyclone 110 and converges
Enter into cleaned coal flotation unit 500.
Big granularity coal slime is flowed into pan feeding pallet 130 by classifying cyclone underflow opening 112, then by pan feeding pallet 130
It is flowed into liquid-solid fluid bed 120, big density coal slime and small density coal slime is sorted into liquid-solid fluid bed 120, it is small close
Coal slime is spent under the action of ascending current, via liquid-solid fluid bed overflow port outflow liquid-solid fluid bed 120 and is imported into coarse-fine coal
Mud screening plant 400, big density coal slime deposit in liquid-solid fluid bed 120, and when pressure exceeds setting value, in the machine of execution
Open liquid-solid fluid bed 120 underflow outlet 128 under the action of structure 124, and then big density coal slime is flowed into coarse medium slime sieve
In screening device 300.
Further, the big density coal slime in coarse medium slime screening plant 300 is under the screening of high frequency shale shaker 310
Be divided into coarse medium slime a and screenings two parts, after screenings is dehydrated into concentrator 320, enter the first filter press 330 into
One step is dehydrated and is formed as tail coal mud c, and the moisture of abjection is continued to participate in the form of recirculated water e in sorting process.
After small density coal slime in coarse coal slurry screening plant 400 is concentrated the dehydration of cyclone 410, in straight-line oscillation
It is further sorted on sieve 420, to be divided into coarse coal slurry b and screenings two parts, screenings is imported into cleaned coal flotation unit
500。
Ore pulp is entered to, small grain size coal slime and together by the screenings in coarse coal slurry screening plant 400 prepare
In device 510, the concentration of small grain size coal slime and screenings is adjusted in kaskad apparatus for pre-flotation pulp conditioning 510, and is made after concentration is suitable
Enter in flotation column 520, flotation column 520 carries out flotation to it, and it is divided into two parts, and a portion enters
Be formed as floatation clean coal d after second filter press, 530 flotation, another part, which enters in concentrator 320, is formed as tail coal after dehydration
Mud c.
Second embodiment:
As shown in Figure 1, slime separation system includes coal slime storage device 200, coal slime classifying and sorting device 100, thick middle coal
Mud screening plant 300, smart coarse medium slime screening plant 400 and cleaned coal flotation unit 500.
Wherein, coal slime classifying and sorting device 100 is by classifying cyclone 110, liquid-solid fluid bed 120 and pan feeding pallet 130
Composition;Coarse medium slime screening plant 300 is made of high frequency shale shaker 310, concentrator 320 and the first filter press 330;It is coarse-fine
Coal slime screening plant 400 is made of concentrate cyclone 410 and linear vibrating screen 420;Cleaned coal flotation unit 500 is prepared by ore pulp
Device 510, flotation column 520 and the second filter press 530 composition.As shown in figure 15, slime separation method is liquid-solid fluid bed 120a
Middle injection ascending current, until after forming uncertain ascending current in liquid-solid fluid bed 120a.Make in coal slime storage device 200
Storage has coal slime raw material to be flowed into classifying cyclone 110a under the action of Pulp pump 600, the quilt in classifying cyclone 110a
It is classified into big granularity coal slime and small grain size coal slime, small grain size coal slime flows through classifying cyclone overflow port 113a and is imported into essence
In coal flotation device 500.
Big granularity coal slime is flowed into liquid-solid fluid bed 120a by classifying cyclone underflow opening 112a, liquid-solid fluid bed
Big density coal slime and small density coal slime are sorted into 120a, small density coal slime is solid via liquid under the action of ascending current
Fluidized bed overflow port 122a flows out liquid-solid fluid bed 120a and is imported into coarse coal slurry screening plant 400, and big density coal slime is in liquid
It is deposited in solid fluid bed 120a, and when pressure exceeds setting value, makes liquid-solid fluid bed bottom under the action of executing agency 140a
Head piece 121a is opened, and then big density coal slime is flowed into coarse medium slime screening plant 300.
Further, the big density coal slime in coarse medium slime screening plant 300 is under the screening of high frequency shale shaker 310
Be divided into coarse medium slime a and screenings two parts, after screenings is dehydrated into concentrator 320, enter the first filter press 330 into
One step is dehydrated and is formed as tail coal mud c, and the moisture of abjection is continued to participate in the form of recirculated water e in sorting process.
After small density coal slime in coarse coal slurry screening plant 400 is concentrated the dehydration of cyclone 410, in straight-line oscillation
It is further sorted on sieve 420, to be divided into coarse coal slurry b and screenings two parts, screenings is imported into cleaned coal flotation unit
500。
To which the screenings in small grain size coal slime and coarse coal slurry screening plant 400 enters kaskad apparatus for pre-flotation pulp conditioning together
In 510, the concentration of small grain size coal slime and screenings is adjusted in kaskad apparatus for pre-flotation pulp conditioning 510, and be allowed to after concentration is suitable into
Enter into flotation column 520, flotation column 520 carries out flotation to it, and it is divided into two parts, and a portion enters second
Be formed as floatation clean coal d after 530 flotation of filter press, another part, which enters in concentrator 320, is formed as tail coal mud c after dehydration.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
The orientation or positional relationship of the instructions such as degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right" is based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than the structure of indication or suggestion meaning
Or unit must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, defining " first ", the feature of " second " can explicitly or implicitly include one or more of the features.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example,
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that: not
A variety of change, modification, replacement and modification can be carried out to these embodiments in the case where being detached from the principle of the present invention and objective,
The scope of the present invention is defined by the claims and their equivalents.
Claims (10)
1. a kind of slime separation method characterized by comprising
Classification and sorting: coal slime raw material cyclonic separation is gone out into small grain size coal slime and big granularity coal slime, the big granularity coal slime and is consolidated through liquid
Big density coal slime and small density coal slime are respectively obtained after fluidisation sorting;
Coarse medium slime sorting: big density coal slime being screened through high-frequency vibration, obtains coarse medium slime on sieve, screenings is dehydrated,
Filters pressing finally obtains tail coal mud and recirculated water;
Coarse coal slurry sorting: small density coal slime is concentrated, the solid obtained after concentration is screened, is obtained on sieve coarse-fine
Coal slime.
2. slime separation method according to claim 1, which is characterized in that will be sieved obtained in coarse coal slurry sorting step
The liquid of generation in lower object and enrichment process sends to flotation.
3. slime separation method according to claim 2, which is characterized in that further include:
Cleaned coal flotation: by screenings obtained in small grain size coal slime, coarse coal slurry sorting step obtained in classification and sorting step
It is mixed together with the liquid of the generation in enrichment process, and carries out flotation, carry out filters pressing later, to obtain flotation essence after filters pressing
Coal, the liquid reflux that filters pressing is generated to mixed processes.
4. slime separation method according to claim 3, which is characterized in that in coarse medium slime sorting step, using height
Frequency vibration is screened, and is dehydrated using concentrator, carries out filters pressing using the first filter press;
In coarse coal slurry sorting step, thickening is carried out to small density coal slime using concentrate cyclone, utilizes straight-line oscillation
Sieve screens the solid after concentration;
In flotation step, in kaskad apparatus for pre-flotation pulp conditioning by screenings obtained in small grain size coal slime, coarse coal slurry sorting step with
The liquid of generation in enrichment process mixes, and using column flotation, carries out filters pressing using the second filter press.
5. slime separation method described in any one of -4 according to claim 1, which is characterized in that in classification and sorting step,
Coal slime raw material is handled using classifying and sorting device, classifying and sorting device includes:
Classifying cyclone, the classifying cyclone have classifying cyclone underflow opening, the classifying cyclone underflow opening protrude into
In hopper;
Liquid-solid fluid bed, described liquid-solid fluid bed including the lamina tecti of lathe bed and the cover on the lathe bed, the liquid fluidizes admittedly
Bed accessory has sorting chamber;And
Pan feeding pallet, the pan feeding pallet is in the liquid-solid fluid bed top and the liquid-solid fluid bed connection, the pan feeding
Pallet is located in the sorting chamber room, and the pan feeding pallet has the feed chute with the sorting chamber, the lamina tecti
It limits internal discharge gate jointly between the roof of the pan feeding pallet, passes through between the feed chute and the sorting chamber
The cross section of internal discharge gate connection, the sorting chamber is annular, and the side wall of the lathe bed includes inner sidewall and lateral wall, institute
State the inner sidewall that pan feeding pallet is connected to the lathe bed;
Decelerating barrier, the decelerating barrier are protruded into the feed chute and are spaced apart with the bottom wall of the feed chute, the deceleration
Baffle is connected to the lamina tecti, and the decelerating barrier is radially positioned the side of the classifying cyclone Yu the pan feeding pallet
Between wall.
6. slime separation method according to claim 5, which is characterized in that described liquid-solid fluid bed further include:
Water supply pipe, the water supply pipe, which has, is located at the indoor outlet pipe of the sorting chamber, and the number of the outlet pipe is more
It is a, each outlet pipe along the lathe bed radially extend and multiple outlet pipes are uniformly distributed along the circumferential direction of the lathe bed, often
The water jet being sequentially distributed on a outlet pipe with multiple radial directions along the lathe bed, water jet on the outlet pipe from
Distribution density is gradually increased from inside to outside.
7. slime separation method described in any one of -4 according to claim 1, which is characterized in that in classification and sorting step,
Coal slime raw material is handled using classifying and sorting device, classifying and sorting device includes:
Classifying cyclone, the classifying cyclone have the classifying cyclone underflow opening positioned at bottom;
Conversion head, the conversion head have conversion head outlet and conversion head import, the conversion head outlet and the classification eddy flow
The connection of device underflow opening;And
Liquid-solid fluid bed, the liquid-solid fluid bed lower part has water inlet, and there is liquid to flow admittedly for the liquid-solid fluid bed bottom
Change bed underflow opening, the liquid-solid fluid bed top has liquid-solid fluid bed overflow port, the classifying cyclone and described turn
Change the head described liquid-solid fluid bed and described classifying cyclone underflow opening, the conversion through the liquid-solid fluid bed overflow port insertion
Head import, conversion head outlet are respectively positioned on described liquid-solid fluid bed interior.
8. slime separation method according to claim 7, which is characterized in that be equipped with below the classifying cyclone underflow opening
Conversion head, the conversion head include expansion pipe and stop part, and the stop part limits conversion head with expansion pipe jointly and goes out
Mouthful, conversion head outlet generally perpendicular to the classifying cyclone axial direction, the stop part and the classifying cyclone and
Any of the liquid-solid fluid bed connection.
9. slime separation method according to claim 8, which is characterized in that the cross section of conversion head outlet on to
It is down in first increases and then decreases trend.
10. a kind of slime separation system characterized by comprising
Coal slime storage device, the coal slime storage device is for storing coal slime raw material;
The discharge port of classifying and sorting device, the coal slime storage device is connect with the feed inlet of the classifying cyclone, and described point
Grade cyclone has discharger, and the liquid-solid fluid bed bottom has underflow outlet;
Coarse medium slime screening plant, the coarse medium slime screening plant include high frequency shale shaker, concentrator and the first filter press,
The high frequency shale shaker is suitable for sifting out coarse medium slime and supplying liquid after sieve to concentrator, the solid outlet of concentrator and first
Filter press connection, and the liquid outlet of concentrator is connect with the liquid outlet of the first filter press, the solid outlet of the first filter press
Suitable for tail coal mud is discharged;
Coarse coal slurry screening plant, the coarse coal slurry screening plant include concentrate cyclone and the underflow with concentrate cyclone
The linear vibrating screen of mouth connection, the underflow opening of concentrate cyclone are connect with linear vibrating screen, and linear vibrating screen is suitable for sifting out coarse-fine
Coal slime;
Cleaned coal flotation unit, the cleaned coal flotation unit include kaskad apparatus for pre-flotation pulp conditioning, flotation column and the second filter press, the straight line
The overflow port of liquid and concentrate cyclone, the discharger convergence of classifying cyclone and the charging with kaskad apparatus for pre-flotation pulp conditioning after Vibration Screen
Mouth connection, the outlet of the kaskad apparatus for pre-flotation pulp conditioning are connect with flotation column, the charging of the bottom outlet of the flotation column and the concentrator
Mouth connection, the overflow port of the flotation column are connected to the feed inlet of second filter press, and the solid of second filter press goes out
Mouth is suitable for discharge floatation clean coal, and the liquid outlet of second filter press is suitable for being connected to the feed inlet of kaskad apparatus for pre-flotation pulp conditioning.
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