CN1046102C - Vibration fluidized-bed dry sorting method and apparatus for fine coal - Google Patents
Vibration fluidized-bed dry sorting method and apparatus for fine coal Download PDFInfo
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- CN1046102C CN1046102C CN93111717A CN93111717A CN1046102C CN 1046102 C CN1046102 C CN 1046102C CN 93111717 A CN93111717 A CN 93111717A CN 93111717 A CN93111717 A CN 93111717A CN 1046102 C CN1046102 C CN 1046102C
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Abstract
The present invention relates to a vibrated fluidized bed dry type sorting method and device for sorting fine coal particles according to the density. Vibration fluidized technology is used for forming vibrated fluidized bed type fluid in a sorting tank, fine coal particles are divided into floating objects and sinking objects according to the density in the vibrated fluidized bed type fluid with certain density, the floating objects are scraped off by an impeller, and the sinking objects move towards the material discharging end due to the vibration direction and the certain inclination angle of a bed body to be discharged through a material discharging opening. A vibrated fluidized bed forms the state of particulate fluidization and does not contain air bubbles or small air bubbles, and the density is adjustable. The method has the advantages of high sorting efficiency, no use of water, no environmental pollution and low investment, and is especially suitable for severe cold areas and water-deficient areas to sort coal which is easy to form sludge when the coal is in contact with water.
Description
The present invention relates to a kind of separation method and device thereof of solid bulk material, especially a kind of fluidized bed dry type method for separating and device thereof of Bed for Fine Coal.
Existing coal separation method great majority all adopt wet split, to the general employing of sorting of Bed for Fine Coal heavily be situated between cyclone, smalls jigging machine and shaking table etc., but all need water, and water consumption is big, be not suitable for the coal separation of severe cold, water-deficient area and the easy argillization coal of chance water, the slurry circulating system complexity often causes serious pollution to surrounding environment, the product needed dehydration of choosing back, its cost height.Novel dry sorting method and equipment have successively appearred in recent years, as Chinese patent: dressing coal with dry fluidized bed method and device thereof, the patent No.: CN87101056A and United States Patent (USP) the 4194917th all are granule materials or the coal that utilizes fluidization technology sorting different densities to form, and the fluid bed that utilizes is the bubbling bed, the forming process of bubbling bed is: gas enters powder medium solid grain bed by air-distribution device cloth wind after evenly, bed progressively expands, after reaching critical fluidizing gas velocity, to there be bubble to overflow in the bed, finally form the bubbling bed.The bigger bubble diameter and the stirring of bubbling have a significant impact the sorting of Bed for Fine Coal, Bed for Fine Coal and medium are produced mix or by the granule size classification, can't realize by density separation.And for example the design of Chinese patent 87207129 is to adopt the chain scraper of imbedding in the bed to scrape float coal and spoil, when the scraper plate translational speed is big, fluidized-bed layer there is bigger disturbance, influence the stability and the uniformity of fluidized-bed layer, cause the fluidized-bed layer disorder, the spoil of float in the sorting band cleaned coal and sinking can be polluted mutually, reduced sharpness of separation.Its pre-air compartment adopts glass marble to make charges improving cloth wind performance, but has increased the weight of fluid bed; This separator has influenced the fluidizing stability at fluid bed middle part from sorting band middle part feed, has shortened sorting length and sorting time, and sorting groove utilization rate is lower, and equipment volume is bigger.
The purpose of vibrated fluidized bed Bed for Fine Coal dry sorting method of the present invention and device thereof provides a kind of without the anchor chain screeding device, and the vibrated fluidized bed that the introducing vibration source constitutes, and all establish Channel Group's device at feeding mouth and discharging opening, utilize generation that vibrated fluidized bed can suppress bubble and grow up, and the feature of uniform and stable quasi-fluid density, the dry separation of solution Bed for Fine Coal realizes pressing density separation, reduce environmental pollution, reduce the coal separation cost.
Task of the present invention realizes that as follows vibrated fluidized bed Bed for Fine Coal dry-type separation device mainly is made up of fluid bed housing, air-distribution device, vibrating device, charging gear, discharge device and last sealing cover.In the fluid bed housing, in the air dense medium fluidized bed of material under being in fluidized state by the layering of density size, along the pressure reduction that exists on the length direction with under the effect of vibration material is moved because of feed to the other end from an end of bed simultaneously, sorting band two ends along the bed length direction in the fluid bed housing respectively are provided with material inlet and light material discharge port, below light material discharge port, be provided with the heavy material discharge gate, external chute and underflow marker impeller under the heavy material discharge gate; Light material mouth place establishes the overflow marker impeller, and the material inlet place is connected with the feed chute.The top of fluid bed housing is fixed with the last sealing cover of band blast pipe, on the two sides vertical, respectively be fixed with a vibrating motor with the bed length direction, the bed groove is gone to the bottom and is fixed with air-distribution device, air-distribution device comprises air distribution plate, voltage stabilizing air compartment and air chamber, be provided with the air inlet pipe of wind-distributing pipe and perpendicular connection in the air chamber, many apertures that are directed downwards are arranged on the wind-distributing pipe, voltage stabilizing air compartment is a hollow rectangle framework, its upper base and go to the bottom air distribution plate and pre-air distribution plate are installed, the top is connected with bottom fastening bolt under air distribution plate and the fluid bed housing in the voltage stabilizing air compartment, goes to the bottom to be connected with pre-air distribution plate and air chamber bolt.Fluid bed integral body bottom is installed on the shock insulation spring, and the shock insulation spring is rubber spring or metal spring.
Vibrated fluidized bed Bed for Fine Coal dry sorting method: the powder medium solid that certain altitude is housed in the fluid bed housing, when when air chamber feeds compressed air, compressed air pre-air distribution plate of process and air distribution plate are to fluid bed cell body even distributing wind, air-flow flows through each particle interface of powder equably, when air-flow during greater than minimum fluidizing velocity, granular powder suspends, form the mixture of air-flow and powder, has flowability, and certain suspended substance density arranged, have similar characteristic to fluid, form the fluid bed quasi-fluid; The material that this moment, feeding mouth added in fluid bed, in air dense medium fluidized bed, be divided into floating thing and hypostasis by the density size, in common fluid bed, introduce vibration source device, constitute vibrated fluidized bed, strengthen fluidization characteristic, form still or small burble state, formula or accurate particulate fluidization state promptly loose, the fluidization characteristics of vibration itself has been strengthened the stability and the density homogeneity of fluid bed quasi-fluid.Vibration under the appropriate state has improved the contact performance of gas-solid two-phase, has eliminated bubble and has produced and the mechanism that merges, so air-flow is greater than Initiation speed and when increasing, the voidage of quasi-fluid is linear basically to be increased, and suspended substance density reduces, and regulates the density that air velocity can be regulated quasi-fluid.Regulate the coincidence angle of exciting piece in the vibrating motor as required and regulate amplitude, regulate adjustable chassis and regulate direction of vibration, change frequency of supply and change shake frequency.The bottom hypostasis is taked vibrating direction angle and certain fluid bed inclination angle, realizes that hypostasis moves to exhaust end in bed, discharges hypostasis by the underflow marker impeller, and floating thing is discharged outside the groove from floating thing discharge gate by the overflow marker impeller.
Vibrated fluidized bed dry-type separation device of the present invention, the vibrating device that adopts fixed underpan and adjustable chassis and vibrating motor to form all is provided with Channel Group's device in the bottom of feed chute and underflow chute.Its method is that fluid bed is introduced in vibration, improves the special domestic animal of quasi-fluid, forms the particulate fluidization state, is specially adapted to by density continuous sorting particulate coal; Can sorting in microvesicle and still fluid bed, its adjustable density, efficiency of separation height; The present invention is specially adapted to sorting 6～1mm Bed for Fine Coal, with existing dry separation complete sets of Techniques, realizes that the full level of coal dry method is selected, and reduced investment is pollution-free.Through half type approval test, can realize the sorting of continous-stable, respond well.
Description of drawings:
Fig. 1 is external form figure of the present invention.
Fig. 2 is the A-A cutaway view of external form figure of the present invention.
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described, vibrated fluidized bed Bed for Fine Coal dry-type separation device of the present invention, it is made up of vibrating motor 1, fixed underpan 2, fluid bed housing 3, last sealing cover 4, air distribution plate 5, rubber blanket 6, adjustable chassis 7, voltage stabilizing air compartment 8, pre-air distribution plate 9, shock insulation spring 10, wind-distributing pipe 11, air inlet pipe 12, air chamber 13, feed chute 14, float coal marker impeller 15, underflow chute 16 and underflow marker impeller 17 etc.Fluid bed housing 3 is rectangle hollow frameworks, no member in the bed, the fluid bed inclination angle is 0～20 °, heavy coal is moved to the discharge direction in bed smoothly, and by underflow chute 16 and 17 discharges of underflow marker impeller, very useful bolting has last sealing cover 4 on the bed body, and the blast pipe 18 that can be connected with dust arrester is arranged on the last sealing cover, and the last sealing cover junction usefulness rubber blanket 6 that pushes up on it and the fluid bed housing 3 seals; Fluid bed housing 3 gone to the bottom air distribution plate 5, voltage stabilizing air compartment 8, pre-air distribution plate 9 and air chamber 13, the top of going up of voltage stabilizing air compartment 8 is air distribution plate 5, go to the bottom and be pre-air distribution plate 9, it constitutes double-deck voltage stabilizing cloth wind, improved cloth wind performance, make compressed air enter voltage stabilizing air compartment 13 back pressure stabilitys, can realize that cloth wind is even by pre-air distribution plate 9; Air distribution plate 5 and pre-air distribution plate 9 are made by the porous sintered plate of powder compaction.Voltage stabilizing air compartment 8 and air chamber 13 are by a plurality of separate separations, the cuboid and the trapezoidal cell body that falls formed of corresponding air chamber up and down, on the air chamber 13 top with pre-fabric swatch 9 and voltage stabilizing air compartment 8 goes to the bottom, push up in the voltage stabilizing air compartment 8 and air distribution plate 5 and fluid bed housing go to the bottom between all with rubber seal and bolting, there is the wind-distributing pipe 11 and its a plurality of air inlet pipe 12 connected vertically that crosses each air chamber at air chamber 13 middle parts, and many directions aperture is down arranged on the wind-distributing pipe 11.Along 3 length direction two ends of fluid bed housing material inlet and light thing discharge gate are arranged, below light thing discharge gate, the weight discharge gate is arranged, its below is connected with underflow chute 16 and underflow marker impeller 17, and the impeller transmission connects with motor by universal coupling, and motor does not participate in vibration.In order to make the underflow discharge unimpeded, going to the bottom in underflow chute 16 exits is provided with Channel Group's device, and it comprises 16-1 of air compartment and air inlet pipe 16-2, is connected the sintered plate 16-3 of a porous and uses bolting between the 16-1 of air compartment and chute 16 bottoms; After compressed air feeds from inlet plenum, go into the chute bottom by porous sintered plate current, unimpeded to help discharge, float coal marker impeller 15 is installed in light thing discharge gate inboard, and it mainly is that float coal is scraped outside discharge gate is discharged bed; The external feed chute 14 of material inlet, in this chute bottom Channel Group's device that comprises air compartment and air inlet pipe is set for feed is smooth and easy, it comprises the 14-1 of air compartment, air inlet pipe 14-2 and sintered plate 14-3, and its connected mode is identical with chute 16 bottom Channel Group devices; With the perpendicular relative two sides of bed body length direction the vibrating device that a fixed underpan 2, adjustable chassis 7 and vibrating motor 1 are formed is being installed respectively, four angles of fluid bed integrated bottom are installed on four shock insulation springs 10, and isolation spring adopts rubber spring or metal spring.The shock insulation spring is installed on the basis.
Vibrated fluidized bed Bed for Fine Coal dry sorting method of the present invention, certain powder weighting material is housed in fluid bed housing 3, through air inlet pipe 12, wind-distributing pipe 11, air chamber 13 and voltage stabilizing air compartment 8 send into compressed air, make powder weighting material fluidisation, the material that feeds in the fluid bed housing 3 is divided into floating thing and hypostasis (coal and spoil) and underflow chute 16 and 17 discharges of underflow marker impeller by floating thing marker impeller 15 and hypostasis discharge gate respectively by density in the air dense medium fluid bed, to vibrate and introduce fluid bed, strengthen fluidization characteristic, make fluid bed form loose formula or accurate particulate fluidization state, its density is uniform and stable, as the sorting of Bed for Fine Coal by density.Density can be by changing gas velocity modulation joint; Regulate the coincidence angle of exciting piece in the vibrating motor 1, can regulate amplitude, best amplitude is between 0～4mm; Change frequency of supply, can regulate shake frequency, vibration frequency is between 10～100HZ.Regulate direction of vibration by regulating adjustable chassis 2; The bottom hypostasis moves forward by the horizontal vibration component of vibrating motor 1, and the inclination angle of bed body assists to move along thing, and hypostasis is discharged by chute 16 and underflow marker impeller 17 after moving on to exhaust end.
Claims (8)
1. vibrated fluidized bed Bed for Fine Coal dry-type separation device, it has a fluid bed housing (3), be the rectangle framework, top connects upward sealing cover (4) on it, going to the bottom connects air distribution plate (5), voltage stabilizing air compartment (8), pre-air distribution plate (9), air chamber (13), and wind-distributing pipe (11) and air inlet pipe (12) are arranged in the air chamber; Along bed length direction two ends charging aperture and light thing discharge gate are arranged, below light thing discharge gate, be provided with a hypostasis discharge gate; Hypostasis discharge gate below is connected with underflow chute (16), the external feed chute of charging aperture (14), there is floating thing marker impeller (15) light thing discharge gate inboard, voltage stabilizing air compartment (8) and air chamber (13) are made up of a plurality of separate separation air chambers, corresponding up and down, going to the bottom of fluid bed integral body is installed on four shock insulation springs; It is characterized in that: with the perpendicular two relative side of bed length direction a fixed underpan (2), adjustable chassis (7) and vibrating motor (1) being installed respectively, form vibrating device, a bed body has certain inclination angle to exhaust end; The bottom of feed chute (14) and underflow chute (16) is equipped with Channel Group's device.
2. vibrated fluidized bed Bed for Fine Coal dry-type separation device according to claim 1 is characterized in that: described fluid bed housing (3) is a hollow rectangle framework.
3. vibrated fluidized bed Bed for Fine Coal dry-type separation device according to claim 1, it is characterized in that: described fluidized bed body is 0～20 ° to the inclination angle of exhaust end direction.
4. vibrated fluidized bed Bed for Fine Coal dry-type separation device according to claim 1, it is characterized in that: the bottom Channel Group device of described feed chute (14) and underflow chute (16) by air compartment (14-1) (16-1) and air inlet pipe (14-2) (16-2) form, air compartment (14-1) (16-1) with chute bottom between be connected a porous metal sintering plate (14-3) (16-3), fix with Bolt Connection; Underflow chute (16) bottom connects a underflow marker impeller (17).
5. vibrated fluidized bed Bed for Fine Coal dry-type separation device according to claim 1 is characterized in that: described pre-air distribution plate (9) all is porous metals sintered plates of choice of powder compacting with air distribution plate (5).
6. vibrated fluidized bed Bed for Fine Coal dry-type separation device according to claim 1 is characterized in that: described marker impeller (15) and (17) connect with motor by universal coupling.
7. vibrated fluidized bed Bed for Fine Coal dry sorting method, the powder medium solid of certain altitude is housed in fluid bed housing (3), send into compressed air through air inlet pipe, air chamber and voltage stabilizing air compartment, make the material that feeds in the fluid bed housing (3) in air dense medium fluidized bed, be divided into floating thing and hypostasis (coal and spoil), and discharge by the marker impeller of floating thing and hypostasis discharge gate respectively, it is characterized in that: will vibrate and introduce fluid bed, strengthen fluidization characteristic, regulate density by changing gas speed, regulate the coincidence angle of the interior exciting piece of vibrating motor (1) and regulate amplitude; Change frequency of supply and regulate shake frequency; Regulate adjustable chassis (2) and regulate direction of vibration; The heavy coal in bottom flows to exhaust end along the inclination angle of vibrating direction angle and bed body.
8. vibrated fluidized bed Bed for Fine Coal dry sorting method according to claim 7 is characterized in that: the amplitude of described vibrating motor (1) can be regulated between 0～4mm; Vibration frequency can be regulated between 10～100HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93111717A CN1046102C (en) | 1993-02-15 | 1993-08-21 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93110571.4 | 1993-02-15 | ||
| CN93110571 | 1993-02-15 | ||
| CN93111717A CN1046102C (en) | 1993-02-15 | 1993-08-21 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
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| Publication Number | Publication Date |
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| CN1099318A CN1099318A (en) | 1995-03-01 |
| CN1046102C true CN1046102C (en) | 1999-11-03 |
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| CN93111717A Expired - Fee Related CN1046102C (en) | 1993-02-15 | 1993-08-21 | Vibration fluidized-bed dry sorting method and apparatus for fine coal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014161253A1 (en) * | 2013-04-02 | 2014-10-09 | 中国矿业大学 | Drying and separation integrated machine for vibrating fluidized bed |
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| JP4829744B2 (en) * | 2005-11-25 | 2011-12-07 | 株式会社栗本鐵工所 | Sorting device |
| CN102161016A (en) * | 2009-10-26 | 2011-08-24 | 孙刚 | Air heavy-media dry-process sorting equipment |
| US11331676B2 (en) | 2010-02-01 | 2022-05-17 | Virginia Tech Intellectual Properties, Inc. | Cleaning and dewatering fine coal |
| US9518241B2 (en) | 2010-02-01 | 2016-12-13 | Virginia Tech Intellectual Properties, Inc. | Method of separating and de-watering fine particles |
| CN102834181B (en) * | 2010-02-01 | 2015-07-15 | 弗吉尼亚科技知识产权公司 | Cleaning and dewatering fine coal |
| CN102728448B (en) * | 2012-06-08 | 2014-06-04 | 清华大学 | Dry coal preparation device for fluidized bed |
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| CN104722387A (en) * | 2014-12-17 | 2015-06-24 | 上海大学 | Discarded metal particle dry method gravity concentration separation method |
| CN107899933B (en) * | 2017-11-22 | 2020-11-06 | 河北地质大学 | Multilayer integrated series vertical telescopic dry-method vibration medium removing sieve |
| CN110605177A (en) * | 2019-10-24 | 2019-12-24 | 中国矿业大学 | Differential gas-solid separation vibrating fluidized bed coal separation device and method |
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|---|---|---|---|---|
| US4194971A (en) * | 1977-09-13 | 1980-03-25 | Canadian Patents & Development Limited | Method of sorting fluidized particulate material and apparatus therefor |
| CN87101056A (en) * | 1987-05-28 | 1987-12-16 | 中国矿业学院 | The dressing coal with dry fluidized bed method and apparatus |
| US4741443A (en) * | 1985-01-08 | 1988-05-03 | Aluminium Pechiney | Fluidized bed for continuous separation of two mixed solid phases |
| EP0294801A2 (en) * | 1987-06-10 | 1988-12-14 | Förder- und Anlagentechnik GmbH | Method and device for separating materials according to density |
| WO1993019859A1 (en) * | 1992-04-06 | 1993-10-14 | Sweco, Incorporated | Vibratory screen separator |
-
1993
- 1993-08-21 CN CN93111717A patent/CN1046102C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194971A (en) * | 1977-09-13 | 1980-03-25 | Canadian Patents & Development Limited | Method of sorting fluidized particulate material and apparatus therefor |
| US4741443A (en) * | 1985-01-08 | 1988-05-03 | Aluminium Pechiney | Fluidized bed for continuous separation of two mixed solid phases |
| CN87101056A (en) * | 1987-05-28 | 1987-12-16 | 中国矿业学院 | The dressing coal with dry fluidized bed method and apparatus |
| EP0294801A2 (en) * | 1987-06-10 | 1988-12-14 | Förder- und Anlagentechnik GmbH | Method and device for separating materials according to density |
| WO1993019859A1 (en) * | 1992-04-06 | 1993-10-14 | Sweco, Incorporated | Vibratory screen separator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014161253A1 (en) * | 2013-04-02 | 2014-10-09 | 中国矿业大学 | Drying and separation integrated machine for vibrating fluidized bed |
| US9964357B2 (en) | 2013-04-02 | 2018-05-08 | China University Of Mining And Technology | Drying and separation integrated machine for vibrating fluidized bed |
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| CN1099318A (en) | 1995-03-01 |
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