CN102921636B - Authigenic medium vibrated fluidized bed dry separating method - Google Patents

Authigenic medium vibrated fluidized bed dry separating method Download PDF

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Publication number
CN102921636B
CN102921636B CN201210439104.3A CN201210439104A CN102921636B CN 102921636 B CN102921636 B CN 102921636B CN 201210439104 A CN201210439104 A CN 201210439104A CN 102921636 B CN102921636 B CN 102921636B
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bed
sorting bed
selections
separation
sorting
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CN102921636A (en
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赵跃民
杨旭亮
骆振福
刘初升
段晨龙
宋树磊
董良
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

The invention discloses an authigenic medium vibrated fluidized bed dry separating method and a separating machine and the authigenic medium vibrated fluidized bed dry separating method and the separating machine are suitable to dry separation of coal, ore and other materials. An authigenic medium is formed in a vibrated fluidized bed through separation and feeding, layering in accordance with density is achieved, fluidization of materials is achieved under the cooperative action of updraft and vibration force, materials of high density are discharged from a separating bed continuously, the separation load is reduced, external medium solid is not used, and the separation is achieved through a medium bed with certain density, which is formed in fluidization of feeding particles. The separating machine comprises the separating bed, an air distributing chamber, a discharging device, an overflowing adjustor, a dust removing and air inducing cover, an excitation motor, a spring and a rack. Three separation sections are used, the separation of heave products and light products of three different density is achieved, the medium solid is not used, the separation cost is low, no embedded chain type discharging device is required, materials are conveyed through vibration, fluidized bed flow and bed inclined angle change, the structure is simple, the operation is stable and the reliability is high.

Description

A kind of autogenous medium vibrated fluidized bed dry separation method
technical field:
The present invention relates to a kind of dry separation method, especially a kind of vibrated fluidized bed dry separation method being applicable to coal, ore and other material and carrying out based on autogenous medium sorting.
background technology:
Current dry separation equipment mainly contains air jigging separator, Duplex dry separator and air auto-monitor dry method cull eliminator.Air jigging separator feeds pulsating air stream in air distribution plate bottom, and form variable velocity media stream, sorting pan feeding periodically disperses and sedimentation in variable velocity media stream, completes the layering of taking factor by density as the leading factor within a certain period of time, thus realizes sorting.But it is large that medium pulsation can cause bed to fluctuate, and material autogenous medium layer is very thin, and cannot form enough large hindered falling space, sharpness of separation is not high.In Duplex dry separator, the particle of different densities is subject to wind-force, exciting force, gravity and the acting in conjunction of bed surface frictional force, realize the separation of factor of taking as the leading factor by density according to the potential energy little theory that becomes, but due to the interference effect of size segregation, sharpness of separation is not high.Air auto-monitor dry method cull eliminator adopts the mixing medium solid of Air Fluidized magnetite powder and coal dust composition, form separating medium bed, according to Archimedes principle, pan feeding realizes pressing density separation in air auto-monitor, sharpness of separation is high, can effectively sorting difficult separation coal and pole difficult separation coal.But it has following weak point: one is that the qualified magnetite powder grade that it adopts is narrow, processing difficulties, and the reclaiming clean of medium solid adds capital construction cost and operating cost, simultaneously due to the restriction of existing dry method de-mediated equipment and technology level, assorting room is situated between consumption greatly, and sorting cost is high; Two is that its separation system is complicated, higher to separating density stability requirement; Three is that the built-in chain scraper feeding unit that it adopts easily causes air distribution plate plug-hole, and not good for fine particle stage material separating effect.
summary of the invention:
Technical problem: the object of the invention is the weak point overcome in prior art, proposes that a kind of structure is simple, stable, reliability is high, sorting cost is low, the autogenous medium vibrated fluidized bed dry separation method of water-saving and environmental protection.
Technical scheme: autogenous medium vibrated fluidized bed dry separation method of the present invention: comprise the steps:
A. material feeds in the sorting bed of three points of selections by batcher, opens shock electric machine;
B. respectively to air feed in three air compartment, evenly entered in the sorting bed of three points of selections by the gas distributor air distribution plate arranged in three air compartment, rectilinear motion is done under the exciting force effect that the sorting bed of three points of selections provides at shock electric machine, material realizes fluidisation under the synergy of ascending air and exciting force, form autogenous medium sorting bed, high density material sinking, case of low density loads floats, and realizes material by density stratification;
C. material is in first point of selections, and heavy product is expelled in conveying worm by first impeller material discharging machine, and leftover materials enter in next point of selections, and then discharge section high density material, and final case of low density loads is discharged by light product discharge gate;
D. regulate the overflow adjustable plate of light product discharge gate, light product quality and productive rate can be controlled.
The frame realizing the autogenous medium vibrated fluidized bed dry method cull eliminator of said method, comprise sorting bed, be located at the charging gear of sorting bed left end, support sorting bed, the right-hand member of sorting bed is provided with light product discharge gate, and described batcher and sorting bed flexibly connect; Described sorting bed is the sorting bed having three points of selections, dedusting blower cover is provided with above the sorting bed of three points of selections, three air compartment and three impeller material discharging machines are fixed with below the sorting bed of three points of selections, three impeller material discharging machine bottoms are provided with conveying worm, are equipped with gas distributor air distribution plate in each air compartment; Before and after described sorting bed, center, both sides is arranged with shock electric machine; Described light product discharge gate is provided with overflow regulator, and described overflow regulator comprises overflow adjustable plate, the screw rod be located on overflow adjustable plate, and screw rod is provided with the fixed block regulated through nut.
Described charging gear comprises wedge shape surge bunker, and the wedge mouth place of this wedge shape surge bunker is provided with the feeding control plate controlled by amount control of sailing axle, and the bottom of wedge shape surge bunker is provided with the feed flashboard controlled by switch bearing pin.
Beneficial effect: the present invention utilizes sorting pan feeding to form autogenous medium in vibrated fluidized bed and realizes by density stratification, along separation length there being three impeller material discharging machines, constantly high density material is discharged sorting bed, alleviate sorting load, have and multiplely select process again, need not external medium solid, the medium bed with certain density formed when only relying on pan feeding grain fluidized is to realize sorting.Improve sharpness of separation, multiple different densities product can be obtained, be convenient to product restructuring.Assorting room does not adopt medium solid, sorting cost is lower, and without built-in chain type discharge device, mainly rely on vibration, the gravity flow of fluidization bed and change bed body inclination angle to realize mass transport, structure is simple, stable, reliability is high, and sorting cost is low, can realize the dry method efficient separation of coal, ore and unclassified stores, and without water, be especially applicable to resource high-efficiency processing and the utilization of drought and water-scarce area.Do not adopt medium solid, particle relatively thin in pan feeding is relied on to form autogenous medium bed under vibration and air-flow synergy, remain the sedimentation carrying out taking as the leading factor by net buoyancy in autogenous medium bed compared with coarse granule to realize sorting, and mainly rely on vibration, the gravity flow of fluidization bed and change bed body inclination angle to realize mass transport, there is the vibrated fluidized bed dry method cull eliminator of the features such as structure is simple, stable, reliability is high, sorting cost is low, water-saving and environmental protection.
accompanying drawing illustrates:
Fig. 1 is method for separating schematic flow sheet of the present invention;
Fig. 2 is separator structure schematic diagram of the present invention;
Fig. 3 is light product discharge gate overflow baffle structural representation of the present invention.
In figure: 1-batcher, 2-sorting bed, 3-dedusting blower cover, 4-shock electric machine, 5-spring, the light product discharge gate of 6-, 8-air compartment, 9-impeller material discharging machine, 10-conveying worm, 11-overflow adjustable plate, 12-adjustable plate chute, 13-screw rod, 14-fixed block, 15-nut.
Detailed description of the invention
Below in conjunction with accompanying drawing, one embodiment of the present of invention are further described:
As shown in Figure 1, autogenous medium vibrated fluidized bed dry separation method of the present invention: feed in the autogenous medium vibrated fluidized bed separator of three points of selections by batcher 1 by pan feeding, opens shock electric machine 4; Respectively to air feed in three air compartment 8, air leads to air blast, enters through pressurized tank, evenly enter in the sorting bed 2 of three points of selections by the gas distributor air distribution plate arranged in three air compartment 8, rectilinear motion is done under the exciting force effect that the sorting bed 2 of three points of selections provides at shock electric machine 4, material realizes fluidisation under the synergy of ascending air and exciting force, and form autogenous medium sorting bed, high density product is sunk, low density products floats, and realizes material by density stratification; Material is in first point of selections, heavy product is expelled in conveying worm 10 by first impeller material discharging machine 9, and leftover materials enter in next point of selections, and then discharges two kinds of intermediate density products, so through repeatedly sorting, final low density products is discharged by light product discharge gate 6; Regulate the overflow adjustable plate 11 of light product discharge gate 6, light product quality and productive rate can be controlled.Amount to four kinds of products after sorting, can require to carry out product restructuring according to user.The air containing a large amount of dust that assorting room produces enters into deduster and is separated, and collects dust and discharges pure air.
As shown in Figure 2, realize the autogenous medium vibrated fluidized bed dry method cull eliminator of said method, primarily of sorting bed 2, air compartment 8, light product discharge gate 6, impeller material discharging machine 9, dedusting blower cover 3, shock electric machine 4, spring 5, frame composition.Batcher 1 is located at the left end of sorting bed 2, frame is supported on the both sides of sorting bed 2, and light product discharge gate 6 is located at the right-hand member of sorting bed 2, and described batcher 1 flexibly connects with sorting bed 2, frame and sorting bed 2 junction are provided with spring 5, and sorting bed 2 is connected by spring 5 with frame; Described sorting bed 2 is for there being the sorting bed 2 of three points of selections, two dedusting blower covers 3 are provided with above the sorting bed 2 of three points of selections, be fixed with three air compartment 8 and three impeller material discharging machines, 9, three impeller material discharging machines 9 and three air compartment 8 below the sorting bed 2 of three points of selections and distinguish corresponding three points of selections.Three impeller material discharging machine 9 bottoms are provided with conveying worm 10, and impeller material discharging machine 9 and conveying worm 10 flexibly connect; Each air compartment 8 top is equipped with gas distributor air distribution plate; Gas distributor is provided with bottom air compartment 8; Described air compartment 8 has three along on separation length direction, and its air quantity independently controls, and different sorting section can be made to have different fluidizing gas velocities; Before and after described sorting bed 2, center, both sides is arranged with shock electric machine 4; By regulating the installation direction angle of shock electric machine 4 on motor cabinet, vibrating direction angle can be made 0 ° ~+60 ° changes, thus amplitude freely can adjust within the scope of 1mm ~ 6mm; Described shock electric machine 4, by Frequency Converter Control, can make vibration frequency adjustable within the scope of 10 Hz ~ 50 Hz; Described light product discharge gate 6 is provided with overflow regulator, and described overflow regulator comprises overflow adjustable plate 11, the screw rod 13 be located on overflow adjustable plate 11, and screw rod 13 is provided with the fixed block 14 regulated through nut 15.Described light product discharge gate 6 is provided with overflow regulator, this overflow regulator is made up of overflow adjustable plate 11, adjustable plate chute 12, screw rod 13, fixed block 14 and nut 15, described overflow adjustable plate 11 height is adjusted up and down by screw rod 13 and being pulled in adjustable plate chute 12 of nut 15, can control light products collection efficiency and quality.

Claims (1)

1. an autogenous medium vibrated fluidized bed dry separation method, comprise employing sorting bed (2), be located at the batcher (1) of sorting bed (2) left end, be supported on the frame of sorting bed (2) both sides, the right-hand member of sorting bed (2) is provided with light product discharge gate (6), and described batcher (1) and sorting bed (2) flexibly connect; Described sorting bed (2) is for there being the sorting bed (2) of three points of selections, sorting bed (2) top of three points of selections is provided with dedusting blower cover (3), sorting bed (2) below of three points of selections is fixed with three air compartment (8) and three impeller material discharging machines (9), three impeller material discharging machine (9) bottoms are provided with conveying worm (10), and each air compartment is equipped with gas distributor air distribution plate in (8); Before and after described sorting bed (2), center, both sides is arranged with shock electric machine (4); Described light product discharge gate (6) is provided with overflow regulator, described overflow regulator comprises overflow adjustable plate (11), the screw rod (13) be located on overflow adjustable plate (11), and screw rod (13) is provided with the fixed block (14) regulated through nut (15); Described charging gear (1) comprises wedge shape surge bunker, and the wedge mouth place of wedge shape surge bunker is provided with the feeding control plate controlled by amount control of sailing axle, and the bottom of wedge shape surge bunker is provided with the feed flashboard controlled by switch bearing pin; It is characterized in that, comprise the steps:
A. material feeds in the sorting bed (2) of three points of selections by batcher (1), opens shock electric machine (4);
B. respectively to three interior air feeds of air compartment (8), evenly enter in the sorting bed (2) of three points of selections by the gas distributor air distribution plate arranged in three air compartment (8), rectilinear motion is done under the exciting force effect that the sorting bed (2) of three points of selections provides at shock electric machine (4), material realizes fluidisation under the synergy of ascending air and exciting force, form autogenous medium sorting bed, high density material sinking, case of low density loads floats, and realizes material by density stratification;
C. material is in first point of selections, heavy product is expelled in conveying worm (10) by first impeller material discharging machine (9), leftover materials enter in next point of selections, and then discharge section high density material, and final case of low density loads is discharged by light product discharge gate (6);
D. regulate the overflow adjustable plate (11) of light product discharge gate (6), light product quality and productive rate can be controlled.
CN201210439104.3A 2012-11-07 2012-11-07 Authigenic medium vibrated fluidized bed dry separating method Active CN102921636B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110328140A (en) * 2019-03-29 2019-10-15 中国矿业大学 Improve the method and corollary apparatus of grain fluidized quality and separating density stability

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CN103196281B (en) * 2013-04-02 2015-01-21 中国矿业大学 Drying and separation integrated machine for vibrated fluidized bed
CN103350094B (en) * 2013-07-09 2015-05-13 台州伟博环保设备科技有限公司 Pneumatic sorting machine
CN105381950B (en) * 2015-10-19 2018-06-15 中国矿业大学 A kind of large size dry method dense media fluid-bed separator and separation system
CN109550583B (en) * 2018-12-05 2020-06-12 中国矿业大学 Dry separator and process for pulverized coal vibration composite force field
CN110293056A (en) * 2019-03-29 2019-10-01 中国矿业大学 A kind of gas-solid fluidized bed dry separation technique using separating density gradient
CN112090746A (en) * 2020-11-09 2020-12-18 天津美腾科技股份有限公司 Multi-product material sorting method and cascade dry separator

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