CN109746125B - A kind of high ash fine slime sorting unit and method - Google Patents
A kind of high ash fine slime sorting unit and method Download PDFInfo
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- CN109746125B CN109746125B CN201910196301.9A CN201910196301A CN109746125B CN 109746125 B CN109746125 B CN 109746125B CN 201910196301 A CN201910196301 A CN 201910196301A CN 109746125 B CN109746125 B CN 109746125B
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
Abstract
A kind of high ash fine slime sorting unit and method, the flotation unit field suitable for coal slime.Including being equipped with foam liquid distribution in column structure top, cleaned coal isopipe root is equipped with cleaned coal discharge gate, the center point of column structure is axially arranged with feed pipe, feed pipe is equipped with feeding device, string has two groups of device for filling respectively on feed pipe, device for filling is compact arranged cylindrical structure, cylindrical structure is connected up and down, it is internal adherent to be equipped with and the matched internal shower water wash mill of flotation column cylinder, lower section is equipped with chats discharge device, chats discharge device bottom, which is equipped with, scans section, externally ported to have circulating pump and microvesicle generators by the cracking of pipeline sequence；Multiple hydrocyclones are respectively equipped with above cleaned coal overflow groove sidewall, each hydrocyclone is equipped with material inlet port, and material inlet port is connected with chats discharge gate.Its is compact-sized, can effectively promote the rate of recovery and quality of cleaned coal of high ash difficult separation coal mud floating product, reduces the coarse granule loss in coal grain.
Description
Technical field
The present invention relates to a kind of high ash fine slime sorting unit and methods, are particularly suitable for the flotation unit field of coal slime
The high ash fine slime sorting unit and method used.
Background technique
With the deterioration of china natural resources situation in recent years and the progress of technology, the raw coal that China is exploited
Ash content rise year by year；And the heavy media technique for accounting for absolute mainstream now can aggravate the generation of secondary slime, broken coal slime etc., it is former
It is increased under the double action of material and technique in technique to difficult separation coal mud in requirement of both treating capacity and treatment effect, whole
The then requirement mainly to flotation circuit in body technology.
The device for being mainly used for flotation circuit now is flotation device, flotation column.Flotation device conduct is most widely used now
Flotation unit, possess the advantages that rate of recovery is high, coarse grain recovering effect is ideal, but its born structure determines that its sorts the time
And stroke it is short the features such as, thus the disadvantages of causing floatation clean coal of poor quality, particulate poor recovery effect.Flotation column then has benefited from it
Design has longer trapping area and thicker froth bed, to there is preferable quality of cleaned coal, but it is also made to have coarse grain to recycle poor, cash
Stone is serious with coal, domestic flotation column in addition automatic control device is poor, is allowed to be difficult to such as flotation device with extensive.For high ash
Difficult separation coal mud, though general device often results in flotation device and has preferable recovering effect cleans ash excessively high and Bed for Fine Coal in tailing
It is more and ash content is too low, though and flotation column can guarantee preferable cleans ash, clean coal recovery is not satisfactory and " running thick " is tight
Weight.Patent public number are as follows: a kind of slime separation technique of CN101757982A, though in view of in coal intergrowth to ash content of coal and
The influence of recycling, can effectively promote quality of cleaned coal and the rate of recovery, but to will cause thin mud in pan feeding excessive for excessive fine grinding, and steep
Foam may pollute cleaned coal to the poor selectivity of particulate, and the technique and the drawbacks of unresolved traditional flotation unit, in addition, mistake
All there is drawback for land occupation, investment and the management in factory in complicated technique, so develop a kind of take up little area and good suitable of effect
For high ash difficult separation coal mud flotation unit pole it is necessary to.
Summary of the invention
Technical problem: in view of the above technical problems, provide that a kind of occupied area is small, compact-sized and treatment effect is excellent and
The big high ash fine slime sorting unit for the treatment of capacity and method.
Technical solution: high ash difficult separation coal mud flotation unit of the invention, including column structure, column structure are equipped in top
Foam liquid distribution, column structure are equipped with the cleaned coal overflow launder for entirely covering foam liquid distribution, cleaned coal isopipe root
Equipped with cleaned coal discharge gate, the center point of column structure is axially arranged with feed pipe, and described feed pipe one end is that flotation column feeding inlet is worn
It crosses cleaned coal overflow launder to extend out, the other end is equipped with feeding device, and it with round pipe road is round that feeding device, which is more small feeding pipes,
The heart is in increased radioactivity, and small feeding pipe shares two groups, and two groups are welded with the different location of feeding pipe respectively, two groups of small feeding pipes
Outlet is on conplane different circumference, to reach the uniform of pan feeding；
String has two groups of device for filling respectively on feed pipe, and two groups of device for filling are separately positioned on feeding device and foam
Between liquid distribution, device for filling is compact arranged cylindrical structure, and cylindrical structure is connected up and down, and whole is in honeycomb, and being can
Package assembly is not directly connected to cylinder, and the flotation column cylinder of inverted funnel structure, flotation column column are equipped with below the column structure
Internal portion is adherent be equipped with the matched internal shower water wash mill of flotation column cylinder, be equipped with chats discharge below flotation column cylinder
Device, chats discharge device bottom are equipped with and scan section, and scanning section bottom is funnel structure, are equipped with underflow opening below funnel structure,
The top of funnel structure be tangentially equipped with flotation pipe, lower section be tangentially equipped with it is externally ported, it is externally ported by pipeline sequential connection have
Circulating pump and microvesicle generators；
Multiple hydrocyclones are respectively equipped with above cleaned coal overflow groove sidewall, each hydrocyclone is equipped with pan feeding and connects
Mouthful, material inlet port is connected with chats discharge gate, and each hydrocyclone overflow port is directly used as most with external connection, overflow product
Whole chats；Underflow opening is connected with the flotation column feeding inlet of feed pipe.
The feeding device includes small feeding pipe of more rhizospheres around feed pipe setting in radioactivity setting, and small feeding pipe is total
It is divided to two groups, two groups of different locations respectively at feeding pipe are welded on feed pipe, are arranged alternately and at two groups small feeding pipe tail end
In on same plane, making the final pan feeding of two groups of small feeding pipes on conplane different circumference, to reach the uniform of pan feeding.
Chats discharge device bottom is to arrange around the circle discharge slot for scanning section out of the groove and through pipeline and hydraulic cyclone
The chats discharge gate of device is connected.
The hydrocyclone is the cyclowass of minor diameter, according to the processing of fine fraction ash content and cyclone device
Ability adjusts number；Cyclone desliming device is hung on outside cleaned coal overflow launder by welding manner, so that hydrocyclone
It is integral with flotation column.
The shower water wash mill is the coaxial round water pipe composition in the center of circle of one group of abutting flotation column wall, round water
The straight water pipe that pipe composition is close to inner wall by four connects, and shower water wash mill region is to trap area, between particle bubble
Adverse current collision occurs mainly in the region.
Shower water wash mill is the coaxial round water pipe composition in the center of circle of one group of abutting flotation column cylinder inner wall, round water
Pipe composition is connected by the straight water pipe that more roots are close to inner wall.
A kind of high ash difficult separation coal mud flotation method, its step are as follows:
Raw material is fed by flotation column feeding inlet after booting, raw material after flotation column feeding inlet enters feed pipe particle with liquid
It sinks down into and scans section, fall into the underflow bucket shape diversion pipe scanned in section, eventually by the externally ported of underflow bucket shape diversion pipe
It is discharged and forms discharge ore pulp, enter circulating pump using pipeline and give power, then discharge ore pulp passes through microvesicle generators rapidly,
To generate a large amount of microvesicles in discharge ore pulp while increase mineral laden bubble in discharge ore pulp, ore pulp is then discharged by tangential swirl
Pipe feeds flotation column and scans section and generate eddy flow in section in scanning, and the big spoil of density enters underflow with external spiral in ore pulp, finally
By becoming tailing with underflow opening discharge；
Density the higher person is then risen to by inward eddy close to the trapping area below shower water wash mill with foam, rising
The pan feeding particle of ore pulp foam and next batch meets and collides, and all mineralized froths generated after collision float to form bubble
Foam layer, froth bed are the upper limit for trapping area, and it is the lower limit for trapping area that flotation column, which scans section, at this time the shower water washing of inboard wall of cylinder
Device generates downlink water flow and washs to froth bed, forces density in froth bed downstream to chats discharge device compared with macrofoam
Discharge, and be finally discharged by chats discharge gate by pipeline, since there are collision probabilities and desorption probability, so part granularity is big
Coal grain can be discharged, the big coal grain of the granularity of discharge then enters hydroclone classification, and overflow is as final Mineral
Product, overflow port are directly communicated with the outside, and hydroclone classification underflow opening then enters flotation column again by flotation column feeding inlet
Sorting；The particle finally depended on bubble then rises to liquid level and gathers to form froth bed, and device for filling passes through compact arranged circle
Barrel structure honeycomb increases the stability of froth bed, and foam liquid distribution then carries out water drenching to froth bed, to make foam
Spoil particles sink to trapping area sorts again in floor, and under flow action, the spoil particle for being adhered to froth bed can be rinsed
Fall, drop out froth bed, sink down into ore pulp, qualified material then flows into cleaned coal overflow launder, is discharged by cleaned coal discharge gate, completes the
Primary high ash difficult separation coal mud flotation；
Again by flotation column feeding inlet pan feeding, after raw material enters feed pipe, first caught with close to shower water wash mill lower section
Collecting ascending gas bubbles caused by last pan feeding in area, mutually adverse current is collided, the particle not being attached in raw material, including spoil particle
The coal grain nonadherent with part repeats the above steps carry out flotation later with liquid sinks to section is scanned；And it is adhered to floating
The particle of bubble then can directly rise to froth bed, after the secondary sorting of foam liquid distribution, as qualified coal grain by essence
Coal overflow launder is discharged, and spoil particle is then sunk down into the ore pulp of flotation column in froth bed.
The utility model has the advantages that
A, there is shower water wash mill on the inside of the upper foam layer of flotation column material feeding region, keep ash content higher without particle up to standard
It is discharged from chats device, effectively control cleans ash；B, flotation column chats discharge device is classified using cyclone, overflow
Chats is done, underflow becomes floatation feed again, and the loss of Coarse Coal can be greatly decreased；C, there is device for filling at froth bed, can have
Effect keeps the form of froth bed, both guarantees cleans ash, can effectively reduce cleaned coal loss；D, final products are three products, can be excellent
The final product structure of chemical industry skill.
Detailed description of the invention
Fig. 1 is high ash difficult separation coal mud flotation unit structural schematic diagram of the invention.
Fig. 2 is foam spray apparatus structure schematic diagram of the invention.
Fig. 3 (a) is inside shower water wash mill front view of the invention.
Fig. 3 (b) is inside shower water wash mill top view of the invention.
Fig. 4 (a) is floatation column feeding device front view of the invention.Fig. 4 (b) is floatation column feeding device of the invention
Top view.Fig. 5 (a) is the mechanism front view of cyclone desliming device of the invention.Fig. 5 (b) is that cyclone of the invention is de-
The mechanism top view of mud device.
In figure: 1- foam liquid distribution, 2- cleaned coal overflow launder, 3- device for filling, 4- flotation column cylinder, 5- feed pipe, 6-
Internal shower water wash mill, 7- chats discharge device, 8- scan section, 9- microvesicle generators, 10- circulating pump, 11- underflow bucket shape
Diversion pipe, 12- hydrocyclone, A- flotation column feeding inlet, B- cleaned coal discharge gate, C- chats discharge gate, D- underflow opening, outside E-
Outlet.
Specific embodiment
Implementation of the invention is further described with reference to the accompanying drawing:
As shown in Figure 1, high ash difficult separation coal mud flotation unit of the invention, including column structure, as shown in Fig. 2, column knot
Foam liquid distribution 1 is equipped in structure top, column structure is equipped with the cleaned coal overflow launder 2 for entirely covering foam liquid distribution 1,
2 bottom of cleaned coal overflow launder is equipped with cleaned coal discharge gate B, and the center point of column structure is axially arranged with feed pipe 5, the feed pipe 5 one
End is that flotation column feeding inlet A is extended out across cleaned coal overflow launder 2, and the other end is equipped with feeding device, and feeding device is more small
It is in increased radioactivity that feeding pipe, which is the center of circle using round pipe road, and small feeding pipe shares two groups, two groups of positions different from feeding pipe respectively
Welding is set, the outlet of two groups of small feeding pipes is on conplane different circumference, to reach the uniform of pan feeding；Such as Fig. 4 (a)
With shown in Fig. 4 (b), the feeding device includes more rhizospheres around the setting of feed pipe 5 in the small feeding pipe of radioactivity setting, it is small enter
Expects pipe is divided into two groups, and two groups of different locations respectively at feeding pipe are welded on feed pipe 5, is arranged alternately and two groups of small feeding pipes
Tail end is in the same plane, makes the final pan feeding of two groups of small feeding pipes on conplane different circumference, to reach pan feeding
It is uniform；
String has two groups of device for filling 3 respectively on feed pipe 5, and two groups of device for filling 3 are separately positioned on feeding device
Between foam liquid distribution 1, device for filling 3 is compact arranged cylindrical structure, and cylindrical structure is connected up and down, and whole is in honeycomb
Shape is not directly connected to for structure can be assembled with cylinder, and the flotation column cylinder 4 of inverted funnel structure is equipped with below the column structure,
As shown in Fig. 3 (a) and Fig. 3 (b), adherent be equipped in 4 inside of flotation column cylinder is washed with the matched internal shower water of flotation column cylinder 4
Device 6 is equipped with chats discharge device 7 below flotation column cylinder 4, and 7 bottom of chats discharge device is equipped with and scans section 8, scans 8 bottom of section
Portion is funnel structure, is equipped with underflow opening D below funnel structure, the top of funnel structure is tangentially equipped with flotation pipe, lower section is tangentially set
There are externally ported E, externally ported E to have circulating pump 10 and microvesicle generators 9 by pipeline sequential connection；
As shown in Fig. 5 (a) and Fig. 5 (b), multiple hydrocyclones 12 are respectively equipped with above 2 side wall of cleaned coal overflow launder, each
Hydrocyclone 12 is equipped with material inlet port, and material inlet port is connected with chats discharge gate C, and each 12 overflow port of hydrocyclone is straight
It connects and external connection, overflow product is as final chats；Underflow opening is connected with the flotation column feeding inlet A of feed pipe 5.
7 bottom of chats discharge device is around the circle discharge slot for scanning section 8, and row is revolved out of the groove and through pipeline and waterpower
The chats discharge gate C of stream device 12 is connected, and the hydrocyclone 12 is the cyclowass of minor diameter, according to fine fraction ash content
And the processing capacity of cyclone device adjusts number；Cyclone desliming device 12 hangs on cleaned coal overflow by welding manner
Outside slot 2, so that hydrocyclone 12 and flotation column are integral.
The shower water wash mill 6 is the coaxial round water pipe composition in the center of circle of one group of abutting flotation column wall, round
The straight water pipe that water pipe composition is close to inner wall by four connects, and 6 region of shower water wash mill is to trap area, between particle bubble
Adverse current collision occur mainly in the region, shower water wash mill 6 is that the center of circle of one group of 4 inner wall of abutting flotation column cylinder is same
The round water pipe of axis forms, and round water pipe composition is connected by the straight water pipe that more roots are close to inner wall.
A kind of high ash difficult separation coal mud flotation method, its step are as follows:
Raw material is fed by flotation column feeding inlet A after booting, raw material after flotation column feeding inlet A enters feed pipe 5 particle with
Liquid sinks are fallen into the underflow bucket shape diversion pipe 11 scanned in section 8, to section 8 is scanned eventually by underflow bucket shape diversion pipe 11
Externally ported E be discharged to form discharge ore pulp, enter circulating pump 10 using pipeline and give power, then discharge ore pulp is logical rapidly
Microvesicle generators 9 are crossed, to generate a large amount of microvesicles in discharge ore pulp while increase mineral laden bubble in discharge ore pulp, are then discharged
Ore pulp feeds flotation column by tangential swirl pipe and scans section 8 and generate eddy flow in section 8 in scanning, and the big spoil of density is with outer in ore pulp
It is threaded into underflow, becomes tailing eventually by with underflow opening D discharge；
Density the higher person then rises to the trapping area close to 6 lower section of shower water wash mill by inward eddy with foam, rises
Ore pulp foam meet and collide with the pan feeding particle with next batch, all mineralized froth floating shapes generated after collision
At froth bed, froth bed is the upper limit for trapping area, and it is the lower limit for trapping area that flotation column, which scans section 8, at this time the spray of inboard wall of cylinder
Water washing device 6 generates downlink water flow and washs to froth bed, forces density in froth bed downstream to chats compared with macrofoam
Discharge device 7 is discharged, and is finally discharged by chats discharge gate C by pipeline, since there are collision probabilities and desorption probability, so
Granularity big coal grain in part can be discharged, and the big coal grain of the granularity of discharge then enters the classification of hydrocyclone 12, overflow conduct
Final chats product, chats discharge gate C is directly communicated with the outside, and 12 classification underflow mouth of hydrocyclone is then by flotation column
Feeding inlet A enters flotation column and sorts again；The particle continuation finally depended on bubble then rises to liquid level and gathers to form froth bed,
Device for filling 3 increases the stability of froth bed by compact arranged cylindrical structure honeycomb, and foam liquid distribution 1 is then right
Froth bed carries out water drenching, so that spoil particles sink to trapping area in froth bed be made to sort again, under flow action, is adhered to
The spoil particle of froth bed can be rinsed, and dropped out froth bed, sunk down into ore pulp, and qualified material then flows into cleaned coal overflow launder
2, it is discharged by cleaned coal discharge gate B, completes the high ash difficult separation coal mud flotation of first time；
Again by flotation column feeding inlet A pan feeding, after raw material enters feed pipe 5, first and close to the lower section of shower water wash mill 6
Trapping ascending gas bubbles caused by last pan feeding in area, mutually adverse current is collided, the particle not being attached in raw material, including spoil
Grain and the nonadherent coal grain in part repeat the above steps carry out flotation later with liquid sinks to section 8 is scanned；And it is adhered to
The particle of ascending gas bubbles then can directly rise to froth bed, after the secondary sorting of foam liquid distribution 1, as qualified coal grain
It is discharged by cleaned coal overflow launder 2, spoil particle is then sunk down into the ore pulp of flotation column in froth bed.
Claims (7)
1. a kind of high ash difficult separation coal mud flotation unit, it is characterised in that: it includes column structure, is equipped with bubble in column structure top
Foam liquid distribution (1), column structure are equipped with the cleaned coal overflow launder (2) for entirely covering foam liquid distribution (1), cleaned coal overflow
Slot (2) bottom is equipped with cleaned coal discharge gate (B), and the center point of column structure is axially arranged with feed pipe (5), the feed pipe (5) one
End is that flotation column feeding inlet (A) is extended out across cleaned coal overflow launder (2), and the other end is equipped with feeding device, and feeding device is more
It is in increased radioactivity that the small feeding pipe of root, which is the center of circle using round pipe road, and small feeding pipe shares two groups, two groups respectively with feeding pipe not
It is welded with position, the outlet of two groups of small feeding pipes is on conplane different circumference, to reach the uniform of pan feeding；
String has two groups of device for filling (3) respectively on feed pipe (5), and two groups of device for filling (3) are separately positioned on pan feeding dress
It sets between foam liquid distribution (1), device for filling (3) is compact arranged cylindrical structure, and cylindrical structure is connected up and down, is integrally in
Honeycomb is not directly connected to for structure can be assembled with cylinder, and the flotation column column of inverted funnel structure is equipped with below the column structure
Body (4), flotation column cylinder (4) it is internal it is adherent be equipped with the matched internal shower water wash mill (6) of flotation column cylinder (4), float
It selects and is equipped with chats discharge device (7) below column cylinder (4), chats discharge device (7) bottom is equipped with and scans section (8), scans section (8)
Bottom is funnel structure, is equipped with underflow opening (D) below funnel structure, the top of funnel structure is tangentially equipped with flotation pipe, lower section is cut
To externally ported (E) is equipped with, externally ported (E) has circulating pump (10) and microvesicle generators (9) by pipeline sequential connection；
It is respectively equipped with multiple hydrocyclones (12) above cleaned coal overflow launder (2) side wall, each hydrocyclone (12) is equipped with
Material inlet port, material inlet port are connected with chats discharge gate (C), each hydrocyclone (12) overflow port directly and external connection,
Overflow product is as final chats；Underflow opening is connected with the flotation column feeding inlet (A) of feed pipe (5).
2. high ash difficult separation coal mud flotation unit according to claim 1, it is characterised in that: the feeding device includes more
Rhizosphere is around feed pipe (5) setting in the small feeding pipe of radioactivity setting, and small feeding pipe is divided into two groups, and two groups respectively at feeding pipe
Different location is welded on feed pipe (5), is arranged alternately and two groups small feeding pipe tail end is in the same plane, make it is two groups small enter
The final pan feeding of expects pipe is on conplane different circumference, to reach the uniform of pan feeding.
3. high ash difficult separation coal mud flotation unit according to claim 1, it is characterised in that: the chats discharge device (7)
Bottom is to arrange the chats discharge gate (C) out of the groove and through pipeline and hydrocyclone (12) around the circle discharge slot for scanning section (8)
It is connected.
4. high ash difficult separation coal mud flotation unit according to claim 1, it is characterised in that: the hydrocyclone (12) is
The cyclowass of minor diameter adjusts number according to the processing capacity of fine fraction ash content and cyclone device；Cyclone is de-
Mud device (12) hangs on cleaned coal overflow launder (2) outside by welding manner, so that hydrocyclone (12) and flotation column are at one
It is whole.
5. high ash difficult separation coal mud flotation unit according to claim 1, it is characterised in that: the shower water wash mill
(6) the round water pipe composition coaxial for the center of circle of one group of abutting flotation column wall, round water pipe composition are close to inner wall by four
Straight water pipe connection, shower water wash mill (6) region are trapping area, and the adverse current collision between particle bubble occurs mainly in this
Region.
6. high ash difficult separation coal mud flotation unit according to claim 1, it is characterised in that: shower water wash mill (6) is
The coaxial round water pipe composition in the center of circle of one group of abutting flotation column cylinder (4) inner wall, round water pipe composition is by more roots abuttings
The straight water pipe of wall connects.
7. a kind of high ash difficult separation coal mud flotation method using high ash difficult separation coal mud flotation unit described in above-mentioned any claim,
It is characterized by the following steps:
Raw material is fed by flotation column feeding inlet (A) after booting, raw material particle after flotation column feeding inlet (A) enters feed pipe (5)
With liquid sinks to section (8) are scanned, fall into the underflow bucket shape diversion pipe (11) scanned in section (8), eventually by underflow bucket shape
Externally ported (E) discharge of diversion pipe (11) forms discharge ore pulp, enters circulating pump (10) using pipeline and gives power, then
Discharge ore pulp is by microvesicle generators (9) rapidly, to generate a large amount of microvesicles in discharge ore pulp while increase in discharge ore pulp
Mineral laden bubble is then discharged ore pulp and feeds flotation column by tangential swirl pipe and scans section (8) and generate eddy flow in section (8) in scanning,
The big spoil of density enters underflow with external spiral in ore pulp, becomes tailing eventually by with underflow opening (D) discharge；
Density the higher person is then risen to by inward eddy close to the trapping area below shower water wash mill (6) with foam, rising
The pan feeding particle of ore pulp foam and next batch meets and collides, and all mineralized froths generated after collision float to form bubble
Foam layer, froth bed are the upper limit for trapping area, and it is the lower limit for trapping area that flotation column, which scans section (8), at this time the shower water of inboard wall of cylinder
Wash mill (6) generates downlink water flow and washs to froth bed, forces density in froth bed downstream to chats compared with macrofoam
Discharge device (7) discharge, and by pipeline finally by chats discharge gate (C) be discharged, due to there are collision probability and desorption probability,
So granularity big coal grain in part can be discharged, the big coal grain of the granularity of discharge then enters hydrocyclone (12) classification, overflows
Stream is as final chats product, and chats discharge gate (C) is directly communicated with the outside, and hydrocyclone (12) classification underflow mouth is then
Enter flotation column by flotation column feeding inlet (A) to sort again；The particle finally depended on bubble then rises to liquid level and gathers to be formed
Froth bed, device for filling (3) increase the stability of froth bed, and foam water drenching by compact arranged cylindrical structure honeycomb
Device (1) then carries out water drenching to froth bed, so that spoil particles sink to trapping area in froth bed be made to sort again, makees in water flow
Under, the spoil particle for being adhered to froth bed can be rinsed, and dropped out froth bed, sunk down into ore pulp, and qualified material then flows
Enter cleaned coal overflow launder (2), is discharged by cleaned coal discharge gate (B), completes the high ash difficult separation coal mud flotation of first time；
Again by flotation column feeding inlet (A) pan feeding, after raw material enters feed pipe (5), first and close under shower water wash mill (6)
Ascending gas bubbles caused by last pan feeding mutually collide by adverse current in trapping area, side, the particle not being attached in raw material, including spoil
The nonadherent coal grain of particle and part repeats the above steps carry out flotation later with liquid sinks to section (8) are scanned；And it is glued
The particle for being attached to ascending gas bubbles then can directly rise to froth bed, after the secondary sorting of foam liquid distribution (1), as qualification
Coal grain be discharged by cleaned coal overflow launder (2), spoil particle is then sunk down into the ore pulp of flotation column in froth bed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196301.9A CN109746125B (en) | 2019-03-15 | 2019-03-15 | A kind of high ash fine slime sorting unit and method |
| PCT/CN2019/106918 WO2020186716A1 (en) | 2019-03-15 | 2019-09-20 | High-ash fine coal slime separation device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910196301.9A CN109746125B (en) | 2019-03-15 | 2019-03-15 | A kind of high ash fine slime sorting unit and method |
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| CN109746125B true CN109746125B (en) | 2019-11-29 |
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| CN109746125B (en) * | 2019-03-15 | 2019-11-29 | 中国矿业大学 | A kind of high ash fine slime sorting unit and method |
| CN111468258B (en) * | 2020-04-17 | 2021-08-13 | 西安交通大学 | Simple device and method for physically separating coal slime of power coal plant |
| CN112113398B (en) * | 2020-08-31 | 2021-09-21 | 中国矿业大学 | Coal slime drying and dewatering device and drying and dewatering method |
| CN112337655B (en) * | 2020-09-27 | 2021-09-10 | 中国矿业大学 | Three-product flotation column and method suitable for high-ash fine-fraction coal slime |
| CN114534927A (en) * | 2022-01-14 | 2022-05-27 | 淮北矿业股份有限公司 | Separation process for reducing sulfur and ash in coal |
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| GB1063265A (en) * | 1963-03-08 | 1967-03-30 | Kh Gorny I | A wet jig |
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| CN105834011B (en) * | 2016-06-03 | 2018-06-08 | 武汉工程大学 | Flotation column intensified sorting device and method for separating with filling-material structure |
| CN109453902B (en) * | 2018-12-29 | 2023-11-07 | 江苏大丰新安德矿业有限公司 | Floating magnetic separation column device and combined bubble generator |
| CN109746125B (en) * | 2019-03-15 | 2019-11-29 | 中国矿业大学 | A kind of high ash fine slime sorting unit and method |
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2019
- 2019-03-15 CN CN201910196301.9A patent/CN109746125B/en active Active
- 2019-09-20 WO PCT/CN2019/106918 patent/WO2020186716A1/en active Application Filing
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| CN109746125A (en) | 2019-05-14 |
| WO2020186716A1 (en) | 2020-09-24 |
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