CN203565186U

CN203565186U - Microbubble impulsive motion liquid-solid fluidized bed coarse coal slime sorting machine

Info

Publication number: CN203565186U
Application number: CN201320398027.1U
Authority: CN
Inventors: 费之奎; 朱金波; 王刚; 丁光耀; 汪朋
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2013-07-05
Filing date: 2013-07-05
Publication date: 2014-04-30
Anticipated expiration: 2023-07-05

Abstract

A microbubble impulsive motion liquid-solid fluidized bed coarse coal slime sorting machine relates to the technical field of coarse coal slime sorting and is composed of a concentrate collection box, a main sorting section, and a bottom flow section. An overflow inclined plate is distributed in the upper part of the main sorting section. The concentrate collection box is arranged in the outer periphery. A concentrate overflow pipe is arranged below the collection box. A transition layer is arranged below the overflow inclined plate. A concentrate buffer section is arranged below the transition layer. A fluidized bed layer section is arranged below the concentrate buffer section. Materials are feed in via the fluidized bed layer section in a cycloid mode. Air bubble dispensers are arranged below the fluidized bed and connected with a microbubble generator and a dosing device. A tailing buffer section is arranged below the air bubble dispensers. A impulsive motion water flow layer is arranged below the tailing buffer section. Fluid distributors providing rising water flows are arranged below the impulsive motion water flow layer. The conical bottom flow section is arranged in the lowest part, and a bottom flow pipe is arranged below bottom flow section. The machine of the utility model is clear in structure distribution and can increase the soring efficiency and processing quantity to a certain extent as well as alleviate the problem that the particle size range is narrow when traditional coarse coal slime sorting machines are employed for sorting.

Description

A kind of microvesicle pulsation liquid-solid fluid bed coarse slime size machine

Technical field:

The utility model relates to the gravity concentration technical field of coal separation aspect, refers more particularly to the liquid-solid fluid bed coarse slime size technology of utilizing gravity concentration technology coarse slime to be carried out to sorting.

Background technology:

Liquid-solid fluid bed is a kind of screening installation based on two phase flow theory, and it is that the difference of the sinking speed in water according to the material of different density, granularity and shape is carried out sorting.The sedimentation of particle has two kinds of forms: one is free settling; Another kind is hindered falling.Liquid-solid fluid bed feeding system, discharge system, density control system and sorting bed body four parts of mainly containing form.Its operation principle is in fact the hindered falling theory based on particle in gravitational field, concrete assorting room is: ore pulp feeds separator and ascending current by material feeding system and meets and form interference bed, solid particle does hindered falling motion in separator, and while reaching stable state, density will be floated and enter overflow lower than the particle that disturbs bed averag density; Density is greater than to be disturbed the particle of bed averag density will penetrate bed to enter underflow and discharge by discharge refuse mouth.

For traditional liquid-solid fluid bed separation machine, the sorting of coarse slime be there is to the shortcoming of material size narrow range.When material size scope broadens, granularity shows to obtain highly significant to the adverse effect of sorting, low-density coarse granule is easy to enter in highdensity underflow and goes, although can strengthen the coarse grained recovery of low-density by improving ascending current speed, but too high ascending current speed can cause again high density fine grained to enter into overflow, cause the efficiency of separation to reduce.This is mainly because traditional hindered bed separator has only adopted single ascending current, and due in whole separation chamber, ascending current speed remains unchanged substantially.

A kind of microvesicle pulsation liquid-solid fluid bed coarse slime size machine that the utility model relates to, to sum up on the basis of previous work, after increase and modification partial component, improve and obtain, the problem of the material size narrow range existing in the time of can improving to a certain extent traditional liquid-solid fluid bed separation machine to separation of coarse slime, also can improve the efficiency of separation to coarse slime simultaneously to a certain extent.

Summary of the invention:

Technical problem to be solved in the utility model is to provide a kind of microvesicle pulsation liquid-solid fluid bed coarse slime size machine.

Technical problem to be solved in the utility model realizes by the following technical solutions.

A kind of microvesicle pulsation liquid-solid fluid bed coarse slime size machine, relates to separation of coarse slime technical field.By concentrate collecting box, main point selections, underflow section, formed.It is characterized in that: main point selections top is distributed with overflow hang plate, and distribution angle is 75 °, is arranged with concentrate collecting box outward, is furnished with concentrate overflow pipe under collecting box.Under overflow hang plate, be furnished with screen cloth, screen cloth below is a transition zone, and transition zone below is concentrate breeze way, and this section is comprised of hang plate and the upper lower screen cloth of the interlaced layout of some, the folded acute angle of hang plate and horizontal plane is 75 °, and screen cloth plays a supportive role.Under concentrate breeze way, be fluidized-bed interval, the master that this section is sorting divides selections, and pan feeding thus section feeds in the mode of cycloid.Fluid bed is bubble disperser below, and bubble disperser is connected with microvesicle generators and chemicals dosing plant by pipeline.Mine tailing breeze way is located at the below of bubble disperser, and this section is also comprised of hang plate and the upper lower screen cloth of the interlaced layout of some, and the folded acute angle of hang plate and horizontal plane is 75 °, and screen cloth plays a supportive role.Mine tailing breeze way below be fluctuating flow layer, is furnished with the fluctuating flow pipe by frequency regulation arrangement control herein, and fluctuating flow pipe below is to provide the fluid distributor of ascending current, and below is taper underflow section, under underflow section, is furnished with underflow pipe.

The beneficial effects of the utility model are: the utility model structure distribution is clear and definite, can improve to a certain extent the efficiency of separation and treating capacity, and the narrow problem of particle size range can improve traditional separation of coarse slime machine sorting time.

Accompanying drawing explanation:

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Accompanying drawing 1 is structural representation of the present utility model;

Accompanying drawing 2 is a kind of arrangement schematic diagrames of hang plate.

In accompanying

drawing

1, 1. concentrate collecting box, 2. concentrate overflow pipe, 3. overflow hang plate, 4. overflow hang plate lower screen cloth, 5. transition zone, 6. concentrate breeze way upper screen cloth, 7. concentrate breeze way, 8. concentrate buffering swash plate, 9. concentrate breeze way lower screen cloth, 10. fluidized-bed interval, 11. cycloidal type feeding pipes, 12. microvesicle generators, 13. chemicals dosing plants, 14. bubble dispersers, 15. medicament bubble pipelines, 16. mine tailing breeze way upper screen cloths, 17. mine tailing buffering swash plates, 18. mine tailing breeze ways, 19. mine tailing breeze way lower screen cloths, 20. fluctuating flow layers, 21. frequency regulators, 22. fluctuating flow pipes, 23. fluid distributors, 24. ascending current water inlet pipes, 25. taper underflow sections, 26. underflow pipes.

In accompanying drawing 2,1. particle from swash plate below, enter into the process of swash plate passage, 2. particle swash plate passage to swash plate surface settlement process, 3. the beds of precipitation downslide process from swash plate landing to vertical point constituency, 4. vertically the particle in point constituency under ascending current effect by assorting room, 5 again, along the light grains direction of motion of swash plate rising, the 6. heavy particle motion after sorting, 7. ascending current, the 8. beds of precipitation, 9. swash plate and horizontal direction angle, 10. swash plate channel width, 11. swash plate passages, 12. vertical point constituencies.

The specific embodiment:

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with specific embodiment and diagram, further set forth the utility model.

As shown in Figure 1, a kind of microvesicle pulsation liquid-solid fluid bed coarse slime size machine, by concentrate collecting box 1, concentrate overflow pipe 2, overflow hang plate 3, overflow hang plate lower screen cloth 4, transition zone 5, concentrate breeze way upper screen cloth 6, concentrate breeze way 7, concentrate buffering swash plate 8, concentrate breeze way lower screen cloth 9, fluidized-bed interval 10, cycloidal type feeding pipe 11, microvesicle generators 12, chemicals dosing plant 13, bubble disperser 14, medicament bubble pipeline 15, mine tailing breeze way upper screen cloth 16, mine tailing buffering swash plate 17, mine tailing breeze way 18, mine tailing breeze way lower screen cloth 19, fluctuating flow layer 20, frequency regulator 21, fluctuating flow pipe 22, fluid distributor 23, ascending current water inlet pipe 24, taper underflow section 25, underflow pipe 26 forms.

During normal work, pan feeding feeds fluidized-bed interval 10 in the mode of cycloid by feeding pipe 11 and carries out sorting, forms the suspension of certain concentration by volume, in particle wherein, carries out hindered falling motion.Microvesicle generators 12 produces micro-bubble, and chemicals dosing plant 13 adds foaming agent and appropriate collecting agent, and bubble enters into fluidized-bed interval 10 through medicament bubble pipeline 15 by bubble disperser 14 with medicament to be mixed and contact with ore pulp.Ascending current water inlet pipe 24 feeds ascending current, and is evenly distributed in main point of selections bottom, regulating frequency adjuster 21, the fluctuating flow through pulsation water flow pipes 22 with generation appropriate frequency by fluid distributor 23.The ore pulp feeding carries out sorting under the acting in conjunction of ascending current and fluctuating flow; the particle that hindered falling speed is less than ascending current speed moves upward; enter concentrate breeze way 7; under the effect of concentrate buffering swash plate 8; breeze way fluidised form is comparatively stable; particle settling area is herein large; settling height is short; particle is easy to be deposited on concentrate buffering swash plate 8 and forms the beds of precipitation; the beds of precipitation again can be under the effect of gravity down sliding; reenter fluidized-bed interval 10 sorting repeatedly, therefore, can prevent that high density granular from sneaking into concentrate.Concentrate enters overflow hang plate 3 regions again form stable fluidised form in transition zone 5 after, under the effect of ascending current, enters concentrate collecting box 1, and discharges from concentrate overflow pipe 2.The particle that hindered falling speed is greater than ascending current speed moves downward; enter mine tailing breeze way 18; under the effect of mine tailing buffering swash plate 17; particles settling forms the beds of precipitation to mine tailing buffering swash plate 17; the beds of precipitation see through mine tailing breeze way lower screen cloth 19 and enter in fluctuating flow layer 20; under the effect of fluctuating flow, can prevent that low-density particles from sneaking into underflow.High density granular enters taper underflow section 25, by underflow pipe 26, is discharged.

In accompanying drawing 2, under the effect of ascending current 7, mineral grain enters into swash plate passage 11 through 1 process from vertical point constituency 12, in swash plate passage 11, particles settling area is large, and settling height is short, easily be deposited on swash plate, particle forms the beds of precipitation 8 through 2 processes to swash plate surface settlement.Under Action of Gravity Field, the beds of precipitation 8 glide along swash plate surface to vertical point constituency 12 through 3 processes, and under ascending current 7 effects, particle is brought in swash plate passage 11 again through 1 process, thereby carries out sorting again.Particle is at swash plate passage and vertically between point constituency, form a partial circulating, as shown in Fig. 1 → 2 → 3 → 4.

Mine tailing buffering swash plate 17 in concentrate buffering swash plate 8, mine tailing breeze way 18 in overflow hang plate 3, concentrate breeze way 7 in the utility model, all can play increase desilting area, shortens settling height, the effect of stablizing ore pulp fluidised form.Add medicament, can improve the sorting to low-density particles.Therefore, the utility model can increase ore pulp treating capacity to a certain extent, also can improve to a certain extent the sorting problem to wide grade.

More than show and described basic principle of the present utility model, principal character and advantage.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has respective change and improvement, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. a microvesicle pulsation liquid-solid fluid bed coarse slime size machine, relates to separation of coarse slime technical field; By concentrate collecting box, main point selections, underflow section, formed, it is characterized in that: main point selections top is distributed with overflow hang plate, and distribution angle is 75 °, is arranged with concentrate collecting box outward, is furnished with concentrate overflow pipe under collecting box; Under overflow hang plate, be furnished with screen cloth, screen cloth below is a transition zone, and transition zone below is concentrate breeze way, and this section is comprised of hang plate and the upper lower screen cloth of the interlaced layout of some, the folded acute angle of hang plate and horizontal plane is 75 °, and screen cloth plays a supportive role; Under concentrate breeze way, be fluidized-bed interval, the master that this section is sorting divides selections, and pan feeding thus section feeds in the mode of cycloid; Fluid bed is bubble disperser below, and bubble disperser is connected with microvesicle generators and chemicals dosing plant by pipeline; Mine tailing breeze way is located at the below of bubble disperser, and this section is also comprised of hang plate and the upper lower screen cloth of the interlaced layout of some, and the folded acute angle of hang plate and horizontal plane is 75 °, and screen cloth plays a supportive role; Mine tailing breeze way below be fluctuating flow layer, is furnished with the fluctuating flow pipe by frequency regulation arrangement control herein, and fluctuating flow pipe below is to provide the fluid distributor of ascending current, and below is taper underflow section, under underflow section, is furnished with underflow pipe.