CN106694204A - Device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through liquid-solid fluidized bed - Google Patents
Device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through liquid-solid fluidized bed Download PDFInfo
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- CN106694204A CN106694204A CN201710024092.0A CN201710024092A CN106694204A CN 106694204 A CN106694204 A CN 106694204A CN 201710024092 A CN201710024092 A CN 201710024092A CN 106694204 A CN106694204 A CN 106694204A
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- overflow
- barrel body
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- staving
- slime
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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
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
- B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
- B03B5/66—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type of the hindered settling type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through a liquid-solid fluidized bed. The device comprises a separation and classification barrel body, a fluid distributor and an overflow and slime removal device, wherein the separation and classification barrel body consists of an upper barrel body, a lower barrel body and a bottom cone; an upper opening of the bottom cone is connected to the lower part of the lower barrel body, and a tailings valve is arranged at the lower opening of the bottom cone; the fluid distributor is arranged between the lower barrel body and the bottom cone; the overflow and slime removal device consists of an oblique barrel body, a splitter plate and an overflow groove; the cross sectional area of an upper opening of the oblique barrel body is greater than that of a lower opening of the oblique barrel body; the splitter plate is arranged at the upper part of the oblique barrel body in an oblique manner; the overflow groove is formed in the periphery of the top of the oblique barrel body, and is divided into a left part and a right part by the splitter plate; a coarse-grain substance overflow pipe communicates with the right half part of the overflow groove, and a fine-grain substance overflow pipe communicates with the left half part of the overflow groove; after subsiding in the oblique barrel body, coarse clean coal is discharged through a coarse clean coal blow-off valve at the tail of a top cone, and fine slime is directly discharged from the overflow groove, so that the removing capacity of the overflow groove to the fine slime is strengthened, and the quality of overflow products is improved.
Description
Technical field
The present invention relates to a kind of slime separation classification technique, especially a kind of liquid-solid fluid bed coarse slime size overflow cleaned coal
Desliming grading plant.
Background technology
The technique that most of coal preparation technique is combined using stepless gravity treatment with flotation in the prior art, before no matter being selected in
De- or No severing mud, gravity treatment is 0.5mm with the sorting size limit of flotation, actually due to two kinds of method for separating in itself the characteristics of
So that the coal grain separating effect near 0.5mm is poor, and this part coal grain（Refer generally to 3-0.25mm）GB（GB/T 7186-
1998）It is defined as coarse slime.This partial particulate is typically individually reclaimed in coal preparation plant by high-frequency screen, and its ash content is between cleaned coal with
Between coal, 2-5% typically higher than cleans ash, its final whereabouts is difficult to confirm.It is not sorted typically at present, it is most by its portion
Divide and mix cleaned coal, coal in another part incorporation.Development and the demand of society with the epoch, current coal market is to coal product
Ash requirements it is more and more stricter, have a small number of coal preparation plants using minor diameter dense medium cyclone or spiral to rough coal in recent years
Mud is sorted, but the deficiency due to both devices in itself, it is impossible to reach satisfied effect.Minor diameter heavy medium cyclone
It is not enough：Too thin to medium requirements, medium prepares and reclaims difficult and high cost；High to pan feeding requirement pressure, equipment attrition is tight
Weight, power consumption is big；Although its sorting granularity lower limit is relatively low, thinner stock grading efficiency is low, and a part is without process
The thin mud of sorting enters cleaned coal, cleans ash is influenceed, while it can not completely replace flotation.Spiral is not enough：Sorting
Density is high, and cleaned coal can not reach the cleans ash of final requirement, and its product cannot function as final products sale；Separate unit treating capacity
Small floor space is big, it is necessary to many use cooperatively, and height is big, while needing to adjust oar and distributor, distributing uniformity is difficult to control
System；It is strict to feed thickness requirement, it is difficult to control in industrial production.
In existing coal preparation technique, the fluidization technology on chemical industry is incorporated into Concentrating Field, achieves good effect.
Chinese utility model patent（Patent No. ZL200720037745.0）Disclosed liquid-solid fluid bed coarse slime size classification grading device, carries
A kind of liquid-solid fluid bed coarse slime size device that can reduce coarse slime ash content again by the use of coarse slime itself as medium is supplied.Profit
This mainly relevant with the density of particle relation of its sinking speed during with narrow grade material hindered falling, makes material in itself institute
Sorted in the fluidizing agent of composition.Before the pan feeding using after classification eddy flow and choosing using cyclone, high-frequency screen and coal slime from
The desliming device such as scheming, is still present a part of ash thin mud high in final cleaned coal, ash thin mud high is dirty to cleaned coal in causing pan feeding
Dye is serious, influences separation results.
The content of the invention
The purpose of the present invention is to overcome oneself to have weak point present in technology, there is provided a kind of liquid-solid fluid bed coarse slime point
Overflow cleaned coal desliming grading plant is selected, coarse slime overflow product is sunk in liquid-solid fluid bed coarse slime size machine overflow outlet
Drop desliming, reduces the height ash thin mud pollution in liquid-solid fluid bed coarse slime size machine overflow, thus realize reducing total cleans ash,
Improve product quality and coal resources comprehensive utilization ratio.
Liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant of the invention, including sorting classifying staving, stream
Body distributor, overflow desliming device.
Sorting classifying staving is made up of upper barrel body, lower barrel body and base cone, and upper shell and lower barrel body are connected by flange, base cone
Suitable for reading to be connected to lower barrel body bottom, mouth sets mine tailing valve under base cone, and the bypass pipe controlled by draw valve is provided with by base cone Xia Kou sides.
Fluid distributor is arranged between lower barrel body and base cone, with staving outer connecting pipe UNICOM.
Overflow desliming device is made up of oblique staving, flow distribution plate and overflow launder.The flow distribution plate is inclined at oblique staving
Top, its inclination angle is consistent with oblique staving angle of inclination.Overflow launder is arranged on oblique staving top surrounding, and flow distribution plate separates overflow launder
It is left and right two parts, coarse content overflow pipe is communicated with overflow launder right half part, particulate thing overflow pipe and overflow launder left side split-phase
Logical, the top of upper barrel body is provided with pan feeding sleeve, and feeding pipe is enclosed within pan feeding sleeve.
The sectional area suitable for reading of the oblique staving is more than lower mouth sectional area.
The course of work:During material passes through feeding pipe even into pan feeding sleeve, sorting point is moved downwardly into by gravity
In level staving.After the material entered into sorting classifying staving progressively moves downward certain distance, material starts by the height of density
Low separation, because the lateral cross-sectional area of oblique staving is up big and down small, fluid flow velocity during rising slows down gradually, in flow distribution plate
In the presence of, fine grained moves up through peripheral overflow weir into overflow launder left-half, by installed in the thin of left-half
The overflow pipe discharge of grain thing, coarse granule moves up through peripheral overflow weir into overflow launder right half part, by installed in right side
The coarse content overflow pipe discharge for dividing.The thin mud of liquid-solid fluid bed coarse slime size Grading Overflow by oblique bucket top peripheral overflow
Weir enters into left-half in overflow launder, and coarse-fine coal enters into right side in overflow launder by the peripheral overflow weir on oblique bucket top
Point, realize desliming and the inspissation of liquid-solid fluid bed coarse slime size classifier overflow.Higher density material continues downward
Move to fluid bed bed（Fluid distributor）, density is higher than that the material of fluid bed bed density passes through bed（Fluid distributor）
Enter into bottom, being discharged by mine tailing valve turns into mine tailing, and the material of intermediate density in bed by moving back and forth up and down, pass through
Separation is done step-by-step after a period of time.The formation of fluidized-bed layer is with pan feeding middle-high density material as medium, with by fluid
The ascending water come in distributor is fluid, forms fluid bed bed.
Apparatus of the present invention, reduce the pollution of ash thin mud high in liquid-solid fluid bed coarse slime size machine overflow, and simplify
Follow-up desliming dewatering process is sorted, cleans ash is reduced, is reduced pollution, raising separating effect of the ash thin mud high to cleaned coal.Can be real
Sorted in high precision under existing low-density, cleaned coal is less by thin mud pollution, and cleans ash is lower, when pan feeding ash content is below 25%, point
Cleans ash after choosing is suitable with gravity treatment and floatation clean coal ash content or lower.
Brief description of the drawings
Fig. 1 is liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant structural representation of the present invention.
In figure：1- particulate thing overflow pipes, 2- flow distribution plates, the oblique stavings of 3-, 4- upper barrel bodies, 5- flanges, 6- fluid distributors, 7-
Draw valve, 8- mine tailing valves, 9- base cones, 10- lower barrel bodies, 11- pan feeding sleeves, 12- feeding pipes, 13- coarse content overflow pipes, 14- overflows
Chute.
Specific embodiment
With reference to the accompanying drawings and examples, the invention will be further described.
As shown in Fig. 1, liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant of the present invention, mainly by sorting
Classification staving, feeding device, overflow desliming device and fluid distributor are constituted.Sorting classifying staving is by upper barrel body 4, lower barrel body 10
Constituted with base cone 9, upper barrel body and lower barrel body are connected as a single entity by flange 5.Feeding device is by 12 groups of pan feeding sleeve 11 and feeding pipe
Into being arranged on the top of upper barrel body.Overflow desliming device is by the up big and down small oblique staving 3 of sectional area, flow distribution plate 2 and overflow launder 14
Composition.Flow distribution plate 2 is inclined at the top of oblique staving 3, and its inclination angle is consistent with oblique staving angle of inclination.The top of oblique staving 3
Overflow launder 14 is divided into left and right two parts by periphery suit overflow launder 14, flow distribution plate 2, and the left-half exit of overflow launder is provided with
Particulate thing overflow pipe 14, right half part exit is provided with coarse content overflow pipe 1.Fluid point is set between lower barrel body 10 and base cone 9
Cloth device 6, fluid distributor is prior art, Chinese utility model patent（ZL20070037745.0）To the knot of fluid distributor
Structure has fully open.Fluid distributor 6 is communicated with lower barrel body outer connecting pipe.Base cone exit is provided with the mine tailing of control staving density
Valve 8, base cone outlet side is provided with the bypass pipe 7 controlled by draw valve, so as to the cleaning of mine tailing.
The course of work:During material passes through feeding pipe even into pan feeding sleeve, sorting point is moved downwardly into by gravity
In level staving.After the material entered into sorting classifying staving progressively moves downward certain distance, material starts by the height of density
Low separation, because the lateral cross-sectional area of oblique staving is up big and down small, fluid flow velocity during rising slows down gradually, in flow distribution plate
In the presence of, fine grained moves up through peripheral overflow weir into overflow launder left-half, by installed in the thin of left-half
The overflow pipe discharge of grain thing, coarse granule moves up through peripheral overflow weir into overflow launder right half part, by installed in right side
The coarse content overflow pipe discharge for dividing.The thin mud of liquid-solid fluid bed coarse slime size Grading Overflow by oblique bucket top peripheral overflow
Weir enters into left-half in overflow launder, and coarse-fine coal enters into right side in overflow launder by the peripheral overflow weir on oblique bucket top
Point, realize desliming and the inspissation of liquid-solid fluid bed coarse slime size classifier overflow.Higher density material continues downward
Move to fluid bed bed（Fluid distributor）, density is higher than that the material of fluid bed bed density passes through bed（Fluid distributor）
Enter into bottom, being discharged by mine tailing valve turns into mine tailing, and the material of intermediate density in bed by moving back and forth up and down, pass through
Separation is done step-by-step after a period of time.The formation of fluidized-bed layer is with pan feeding middle-high density material as medium, with by fluid
The ascending water come in distributor is fluid, forms fluid bed bed.
Claims (3)
1. a kind of liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant, including sorting classifying staving, fluid distrbution
Device, overflow desliming device；It is characterized in that：
The sorting classifying staving is made up of upper barrel body, lower barrel body and base cone, and upper shell and lower barrel body are connected by flange, base cone
Suitable for reading to be connected to lower barrel body bottom, mouth sets mine tailing valve under base cone；
The fluid distributor is arranged between lower barrel body and base cone, with staving outer connecting pipe UNICOM；
The overflow desliming device is made up of oblique staving, flow distribution plate and overflow launder；The flow distribution plate is inclined at oblique staving
Top, its inclination angle is consistent with oblique staving angle of inclination；Overflow launder is arranged on oblique staving top surrounding, and flow distribution plate separates overflow launder
It is left and right two parts, coarse content overflow pipe is communicated with overflow launder right half part, particulate thing overflow pipe and overflow launder left side split-phase
Logical, the top of upper barrel body is provided with pan feeding sleeve, and feeding pipe is enclosed within pan feeding sleeve.
2. liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant according to claim 1, it is characterized in that：Institute
The sectional area suitable for reading for stating oblique staving is more than lower mouth sectional area.
3. liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant according to claim 1 and 2, its feature
It is：The bypass pipe controlled by draw valve is provided with by base cone Xia Kou sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710024092.0A CN106694204B (en) | 2017-01-13 | 2017-01-13 | Coarse slime separation overflow clean coal desliming grading device of liquid-solid fluidized bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710024092.0A CN106694204B (en) | 2017-01-13 | 2017-01-13 | Coarse slime separation overflow clean coal desliming grading device of liquid-solid fluidized bed |
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| CN106694204A true CN106694204A (en) | 2017-05-24 |
| CN106694204B CN106694204B (en) | 2023-07-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393189A (en) * | 2018-01-31 | 2018-08-14 | 贵州中矿兴谊选矿技术有限责任公司 | Coarse slime separation pulsating water flow implementation device and implementation method |
| CN108787153A (en) * | 2018-05-21 | 2018-11-13 | 中国矿业大学 | A kind of super-fine classified equipment of single flow coal slime and stage division |
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| CN106076598A (en) * | 2016-07-22 | 2016-11-09 | 邹铁军 | A kind of scraper-type ultrasound wave deslimer |
| CN206483558U (en) * | 2017-01-13 | 2017-09-12 | 中国矿业大学 | Liquid-solid fluid bed coarse slime size overflow cleaned coal desliming grading plant |
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| CN2923031Y (en) * | 2006-05-21 | 2007-07-18 | 秦皇岛玻璃工业研究设计院 | Combined hydraulic grader |
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| CN101850293A (en) * | 2010-04-23 | 2010-10-06 | 中国矿业大学 | Coarse coal slime sorting and grading plant for desliming type liquid-solid fluid bed |
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| CN106076598A (en) * | 2016-07-22 | 2016-11-09 | 邹铁军 | A kind of scraper-type ultrasound wave deslimer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108393189A (en) * | 2018-01-31 | 2018-08-14 | 贵州中矿兴谊选矿技术有限责任公司 | Coarse slime separation pulsating water flow implementation device and implementation method |
| CN108393189B (en) * | 2018-01-31 | 2020-01-03 | 贵州中矿兴谊选矿技术有限责任公司 | Coarse slime separation pulsating water flow implementation device and implementation method |
| CN108787153A (en) * | 2018-05-21 | 2018-11-13 | 中国矿业大学 | A kind of super-fine classified equipment of single flow coal slime and stage division |
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| CN106694204B (en) | 2023-07-04 |
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