CN101590471A - A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method - Google Patents
A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method Download PDFInfo
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- CN101590471A CN101590471A CNA2009100317218A CN200910031721A CN101590471A CN 101590471 A CN101590471 A CN 101590471A CN A2009100317218 A CNA2009100317218 A CN A2009100317218A CN 200910031721 A CN200910031721 A CN 200910031721A CN 101590471 A CN101590471 A CN 101590471A
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Abstract
A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method are applicable to the dry separation of Bed for Fine Coal.Device is by the fluidized bed body that is obliquely installed, be located at the air chamber of fluidized bed body bottom and the multi-turn helmholtz coil that fluid bed integral body is in equidistant layout is wherein constituted, the magnetic field that produces with helmholtz coil forms magnetic stabilization fluid bed, separating medium and the Bed for Fine Coal end from fluidized bed body is fed, gas enters from the bottom air distribution plate, Bed for Fine Coal is divided into floating thing and hypostasis by the density size in fluid bed, floating thing and hypostasis are discharged through discharge gate with flowing of medium.This self streaming gas-solid magnetic field fluidized bed fluid bed fluidization characteristic that improved has reduced gas-solid fluidized bed lower limit of separation, has improved sharpness of separation, its compact conformation, and long service life, small investment, the coal Ep value of energy sorting-6mm reaches 0.07g/cm
3, separating effect is good.Be specially adapted to the coal separation of severe cold, arid area and the easy argillization of chance water.
Description
Technical field
The present invention relates to a kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method, especially a kind of dry separation that is applicable to severe cold, drought and water shortage area and meets the particulate coal of the easy argillization of water.
Background technology
The dry separation of Bed for Fine Coal is a global problem, especially less than the Bed for Fine Coal of 6mm.The patent No. is: 01237426.1 discloses a kind of magnetic stabilization fluid bed sorting unit, these sorting unit primary structure characteristics are solenoids that weight product discharging channel is equipped with the control discharge velocity, be interval with the medium transport coil on the medium feeding-passage outer wall, the space has been provided with the solenoid of stabilization and has played pumped (conveying) medium and solenoid that sorted materials is used on the cell body of fluid bed outer ring.This sorting unit operating parameter and technical indicator when the material sorting are difficult to control, and since a plurality of magnetic force delivering devices need assist material by alternately having a power failure flow its complex structure.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, easy to control, good separation effect can realize the self streaming gas-solid magnetic field fluidized bed sorting unit and the method for gas-solid particulate fluidization.
Self streaming gas-solid magnetic field fluidized bed sorting unit of the present invention, comprise the fluidized bed body that is obliquely installed, be located at the air chamber and the air distribution plate of fluidized bed body bottom, be located at medium chute, the raw coal chute of fluidized bed body front portion, and the overflow chute of fluid bed afterbody and underflow chute, around fluidized bed body, be provided with the multi-turn helmholtz coil that fluid bed integral body is in equidistant layout wherein; Described multi-turn helmholtz coil is 2～4 circles.
The self streaming gas-solid magnetic field fluidized bed method for separating of described device, comprise and to feed in the fluidized bed body through the medium chute by the bed designs height less than the magnetic medium of 0.1mm, feed compressed air to air chamber, compressed air is under the effect of air distribution plate even distributing wind, make the magnetic medium in the fluidized bed body produce fluidisation, when magnetic medium produces fluidisation, helmholtz coil is fed direct current, make and produce uniform and stable longitudinal magnetic field in the fluidized bed body, magnetic medium is arranged in the effect lower edge of longitudinal magnetic field magnetic line of force direction, forms to have the magnetic stabilization fluid bed of stable bed density and bed height; To feed through the raw coal chute less than the particulate raw coal of 6mm and carry out sorting in magnetic stabilization fluid bed, magnetic medium and raw coal flow in fluid bed from front to back, and light product is discharged through the overflow chute, and heavy product is discharged through the underflow chute.
Beneficial effect of the present invention is in the magnetic field fluidized bed body integral body of inclination by the helmholtz coil that the electric current process is arranged, and reduces even eliminates bubble, reduces the back-mixing degree of the selected thing of small grain size, improves the sorting property of fluid bed; The gravity flow marker method has saved the motion discharge device in the fluid bed, heavy product can not be subjected to the squeezing action of discharge device, greatly reduced the frictional force of heavy product and air distribution plate, the wearability and the anti-plug-hole performance requirement of the rigidity of fluid bed and intensity, air distribution plate reduced significantly; Adjustable withdrawal rate of the marker impeller of discharging opening and bed height reduce the medium circulation amount, and make treating capacity not be subjected to the restriction of hypostasis sinking speed.Used self streaming gas-solid magnetic field fluidized bed sorting unit and method, improved the fluid bed fluidization characteristic, reduced gas-solid fluidized bed lower limit of separation, improved sharpness of separation, the coal Ep value of sorting-6mm reaches 0.07g/cm
3, separating effect is good, is particularly useful for the particulate coal separation of severe cold, arid area and the easy argillization of chance water; No any moving component in the fluid bed, its compact conformation, long service life, small investment has practicality widely.
Description of drawings
Fig. 1 is a main TV structure schematic diagram of the present invention.
Fig. 2 is a plan structure schematic diagram of the present invention.
Among the figure: 1-medium chute, 2-raw coal chute, the last sealing cover of 3-, 4-floats thing marker impeller, 5-overflow chute, 6-underflow chute, 7-helmholtz coil, 8-fluidized bed body, 9-coil support, 10-air inlet pipe, 11-air chamber, 12-air distribution plate, 13-underflow marker impeller.
The specific embodiment
The invention will be further described below in conjunction with the embodiment in the accompanying drawing:
Magnetic field fluidized bed sorting unit of the present invention mainly is made of the fluidized bed body 8 that is obliquely installed, air distribution plate 12, air chamber 11, multi-turn helmholtz coil 7.The front portion of fluidized bed body 8 is connected with medium chute 1, raw coal chute 2 by bolt, the afterbody of fluidized bed body 8 is connected with overflow chute 5 and underflow chute 6 by bolt, the feed end of overflow chute 5 is provided with floating thing marker impeller 4, and the discharge end of underflow chute 6 is provided with underflow marker impeller 13; The top of fluidized bed body 8 is provided with sealing cover 3; The bottom of fluidized bed body 8 is connected with air distribution plate 12 by bolt, and air distribution plate 12 is connected with air chamber 11 by bolt, and the air inlet pipe 10 that links to each other with the gas station is equipped with in the bottom of air chamber 11; Be provided with around fluidized bed body 8 fluid bed integral body is in wherein multi-turn helmholtz coil 7, multi-turn helmholtz coil 7 is supported by coil support 9, and multi-turn helmholtz coil 7 is 2～4 circles, and example is 3 circles among the figure, and helmholtz coil 7 is equidistantly arranged.
The self streaming gas-solid magnetic field fluidized bed method for separating of the present invention:
1, at first carry out discharge refuse with-0.074+0.045mm magnetite powder as the high density separating medium:
General-0.074+0.045mm magnetite powder feeds in the fluidized bed body 8 through medium chute 1 by the bed designs height, feed compressed air to air chamber 11, compressed air is under the effect of air distribution plate 12 even distributing winds, make the magnetic medium in the fluidized bed body 8 produce fluidisation, when magnetic medium produces fluidisation, helmholtz coil 7 is fed direct current, make and produce uniform and stable longitudinal magnetic field in the fluidized bed body 8, magnetic medium is arranged in the effect lower edge of longitudinal magnetic field magnetic line of force direction, forms to have the magnetic stabilization fluid bed of stable bed density and bed height; To feed through raw coal chute 2 less than the particulate raw coal of 6mm and carry out sorting in magnetic stabilization fluid bed, magnetite powder and go into coal separation and in fluid bed, flow from front to back, light product is discharged through overflow chute 5, and spoil is discharged through underflow chute 6.
2, with-0.074+0.045mm magnetic bead as the low-density separating medium, sub-elect cleaned coal and middle coal the light product behind discharge refuse:
General-0.074+0.045mm magnetic bead feeds in the fluidized bed body 8 through medium chute 1 by the bed designs height, feed compressed air to air chamber 11, compressed air is under the effect of air distribution plate 12 even distributing winds, make the magnetic medium in the fluidized bed body 8 produce fluidisation, when magnetic medium produces fluidisation, helmholtz coil 7 is fed direct current, make and produce uniform and stable longitudinal magnetic field in the fluidized bed body 8, magnetic medium is arranged in the effect lower edge of longitudinal magnetic field magnetic line of force direction, forms to have the magnetic stabilization fluid bed of stable bed density and bed height; The light product that obtains among the embodiment one fed through raw coal chute 2 carry out sorting in magnetic stabilization fluid bed, magnetic bead and go into coal separation and in fluid bed, flow from front to back, cleaned coal is discharged through overflow chute 5, and middle coal is discharged through underflow chute 6.
Claims (3)
1, a kind of self streaming gas-solid magnetic field fluidized bed sorting unit, comprise the fluidized bed body (8) that is obliquely installed, be located at the air chamber (11) and the air distribution plate (12) of fluidized bed body (8) bottom, be located at fluidized bed body (8) anterior medium chute (1), raw coal chute (2), and the overflow chute (5) of fluid bed afterbody and underflow chute (6), it is characterized in that: around fluidized bed body (8), be provided with the multi-turn helmholtz coil (7) that fluid bed integral body is in equidistant layout wherein.
2, self streaming gas-solid magnetic field fluidized bed sorting unit according to claim 1 is characterized in that: described multi-turn helmholtz coil (7) is 2～4 circles.
3, a kind of self streaming gas-solid magnetic field fluidized bed method for separating of device according to claim 1, comprise and to feed in the fluidized bed body (8) through medium chute (1) by the bed designs height less than the magnetic medium of 0.1mm, feed compressed air to air chamber (11), compressed air is under the effect of air distribution plate (12) even distributing wind, make the magnetic medium in the fluidized bed body (8) produce fluidisation, it is characterized in that: when magnetic medium produces fluidisation, helmholtz coil (7) is fed direct current, make and produce uniform and stable longitudinal magnetic field in the fluidized bed body (8), magnetic medium is arranged in the effect lower edge of longitudinal magnetic field magnetic line of force direction, forms to have the magnetic stabilization fluid bed of stable bed density and bed height; To feed through raw coal chute (2) less than the particulate raw coal of 6mm and carry out sorting in magnetic stabilization fluid bed, magnetic medium and raw coal flow in fluid bed from front to back, and light product is discharged through overflow chute (5), and heavy product is discharged through underflow chute (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100317218A CN101590471A (en) | 2009-06-21 | 2009-06-21 | A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method |
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| CNA2009100317218A CN101590471A (en) | 2009-06-21 | 2009-06-21 | A kind of self streaming gas-solid magnetic field fluidized bed sorting unit and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787045A (en) * | 2018-08-01 | 2018-11-13 | 河南黎明重工科技股份有限公司 | A kind of Vertical Mill feed chute apparatus of fluidisation function |
| CN109013315A (en) * | 2018-10-24 | 2018-12-18 | 中国矿业大学 | A kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and method |
| 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 |
| CN114308659A (en) * | 2022-01-11 | 2022-04-12 | 中国矿业大学 | Magnetic auxiliary gas-solid interference fluidized bed sorting device |
-
2009
- 2009-06-21 CN CNA2009100317218A patent/CN101590471A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787045A (en) * | 2018-08-01 | 2018-11-13 | 河南黎明重工科技股份有限公司 | A kind of Vertical Mill feed chute apparatus of fluidisation function |
| CN108787045B (en) * | 2018-08-01 | 2023-12-12 | 河南黎明重工科技股份有限公司 | Vertical mill feeding chute device with fluidization function |
| CN109013315A (en) * | 2018-10-24 | 2018-12-18 | 中国矿业大学 | A kind of gas-solid fluidized bed sorting unit of conical distribution plate structural formula and method |
| 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 |
| CN114308659A (en) * | 2022-01-11 | 2022-04-12 | 中国矿业大学 | Magnetic auxiliary gas-solid interference fluidized bed sorting device |
| CN114308659B (en) * | 2022-01-11 | 2022-11-29 | 中国矿业大学 | Magnetic auxiliary gas-solid interference fluidized bed sorting device |
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Open date: 20091202 |