CN105921286A - Dry separation device for small particles - Google Patents
Dry separation device for small particles Download PDFInfo
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- CN105921286A CN105921286A CN201610521217.6A CN201610521217A CN105921286A CN 105921286 A CN105921286 A CN 105921286A CN 201610521217 A CN201610521217 A CN 201610521217A CN 105921286 A CN105921286 A CN 105921286A
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Classifications
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C7/00—Separating solids from solids by electrostatic effect
- B03C7/02—Separators
- B03C7/04—Separators with material carriers in the form of trays, troughs, or tables
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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
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/10—Ionising electrode has multiple serrated ends or parts
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Abstract
The invention provides a dry separation device for small particles. The dry separation device structurally comprises a vacuum chamber, wherein an upper pole plate and a lower pole plate are horizontally arranged in the vacuum chamber, the upper pole plate is connected with a ground wire, and the lower pole plate is connected with a power electrode of a radio-frequency power supply; a particle separator is arranged on the lower pole plate, and comprises a ratchet curved-surface groove at a middle part and formed by sequentially adjoining a plurality of sunken ratchets, and collection boxes at the two ends; a particle pool used for holding particles to be separated is arranged above the ratchet curved-surface groove; two opposite semiconductor laser units are arranged outside the vacuum chamber, and each semiconductor laser unit corresponds to one collection box; and a chopper is arranged in front of each semiconductor laser unit, and a beam expander is arranged in front of each chopper. The dry separation device provided by the invention is simple and rapid to operate, and pollution-free while being used for separating two particles with different sizes, and a solution is provided for rapid separation in laboratories and industrial field.
Description
Technical field
The present invention relates to a kind of particle sorting apparatus, specifically a kind of dry type fines separation device.
Background technology
The separation of one or several microparticle things is one significantly work, at sample deposit, the Physical Property Analysis of granule, biochemical analysis and form the aspects such as the integrated chip of functionalization further there is huge application prospect.Current separation method is divided into dry and wet.Wet separation includes separating in miniflow granule method, and more effective physical method is typically with the electrophoretic techniques of uniform electric field, dielectrophoresis technology based on non-uniform electric field, magnetophoresis technology based on non-uniform magnetic field, and sound swimming skills art based on sound wave.In these methods, various sizes of granule flows to different passages under force, such that it is able to realize separation spatially.
A kind of separation method being additionally based on the characteristics such as material dissolubility, adsorptivity is called chromatography, and its separation principle is the difference that each component according to mixture acts on mutual exclusive biphase (fixing phase and flowing phase).Wherein wet method class high performance liquid chromatography (HPLC) is high with separation efficiency, speed fast, detection sensitivity high makes it be widely used, quickly grows, but the instrument and equipment of HPLC is expensive, and operation is strict.Dry method gas-like phase chromatography maybe can be converted into material or the compound of gas for measuring to gasify, and is divided into again gas-solid chromatograph (GSC) and gas-liquid chromatograph (GLC).It is worth mentioning that dry method has a kind of method to be called photochromic spectrometry in separating, it is a kind of optical fractionation technique, utilize the balance between the towing tension given from spherical laser wave and the fluid of weak focus light beam, thus realize the separation on different equilbrium positions of the different size granule.Equally, being all chromatography and cannot be avoided the complicated strict major defect of operation, the cleaning for chromatographic column is the most complex and time-consuming, and separating difficulty rises sharply when target substance content is too low.
Summary of the invention
It is an object of the invention to provide a kind of dry type fines separation device, to solve existing dry and wet isolation technics complex operation, to process the problem that time length, separation accuracy are low etc..
The present invention is achieved in that a kind of dry type fines separation device, including vacuum chamber, in described vacuum chamber, top crown and bottom crown, described top crown earth lead it are horizontally disposed with, described bottom crown connects the power electrode of radio-frequency power supply, another electrode earth lead of radio-frequency power supply；Being provided with particle separator on described bottom crown, described particle separator includes ratchet curved surface groove and the disposable box at two ends that middle part is adjacent successively by the ratchet of some indents and constitutes；In the granule pond being provided above for holding granule to be separated of described ratchet curved surface groove, described granule pond connects the vibrating arm passing described vacuum chamber；A disposable box in two relative semiconductor lasers, and each semiconductor laser corresponding described particle separator respectively it is provided with in the outside of described vacuum chamber；It is equipped with a chopper in the front of each semiconductor laser, is equipped with a beam expanding lens in the front of each chopper.
Described semiconductor laser, described chopper and described beam expanding lens are arranged on lifting platform, and described lifting platform is connected with motor.
Described motor, described semiconductor laser and described chopper all connect with controller, described controller can control the work of described motor, to drive lifting platform to move up and down, and then realize adjusting described semiconductor laser, described chopper and the height of described beam expanding lens；Described controller also can control irradiation time and the pulse frequency of described chopper of described semiconductor laser.
Described particle separator is made up of insulant.
The curved surface flexibility of described ratchet curved surface groove is 180 °.
Described disposable box is to be formed by being respectively provided with the short edge of semi-circular shape in the semi-circular recesses both sides of indent.
Granule to be separated is the granule of two kinds of various sizes of micron dimensions.
The tooth depth of described ratchet and the long ratio of tooth are 1:2.
Described vacuum chamber is surrounded by rustless steel cavity, and rustless steel cavity earth lead；The sidewall of described rustless steel cavity is provided with two relative side windows, the corresponding semiconductor laser of each side window；In the ratchet curved surface groove that the laser that described semiconductor laser is sent out is irradiated in vacuum chamber after corresponding side window.
Described granule pond is suppressed by the multiple layer metal net of different meshes and is formed；Described vibrating arm is in being vertically arranged, and described granule pond is connected with described vibrating arm by horizontally disposed insulating bar.
Opening the radio-frequency power supply in apparatus of the present invention, can produce uniform plasma by gas discharge between upper and lower pole plate, the component of plasma mainly includes electronics, ion and neutral molecule.When molecule (the generally granule of two kinds of various sizes of micron dimensions) to be separated is after granule pond spreads out entrance plasma environment, and it will be charged by plasma.Owing to the ratio ion of electrons spread is fast, therefore when the electron stream incided on granule and ion stream reach balance, granule carries a large amount of negative charge.When granule is fallen into suffered gravity and electrostatic field force balance in bottom crown sheaths near above by gravity, granule will be suspended in bottom crown near above.Simultaneously because granule has high-band electrically, can well disperse between granule, form dispersion suspension system.It is positioned on bottom crown due to particle separator and is in plasma environment, therefore the plasma sheath of ratchet-shaped is formed at ratchet curved surface rooved face, this sheaths is to be unsatisfactory for the periodic potential (being referred to as ratchet gesture in physics) of inversion symmetry, ratchet gesture meets Broken Symmetry, it is possible to produce directed transport.The granule to be separated that dispersion left floating is in the plasma sheath of ratchet-shaped.Different size of granule institute carried charge is different, the height suspended is different, natural frequency is the most different, under laser pulse irradiates, (resonant frequency is inversely proportional to produced resonant frequency with particle radius, it is directly proportional from particle charge amount) the most different, by regulating the pulse frequency of chopper, can control so that two kinds of various sizes of granules move the most round about, finally collected two kinds of various sizes of granules respectively by two disposable boxes, it is achieved the separation of molecule.
The present invention forms plasma by gas discharge in vacuum chamber, and granule to be separated is electronegative in plasma environment, and forms stable state, scattered suspension system, and this is to realize the separation of granule to provide the foundation condition.Make granule disperse due to using plasma and be in stable state suspended state, therefore separation process belongs to dry process, this dry process is compared with the wet processing of existing laser particle analyzer, and the measurement process that existing wet processing can be avoided to be brought is loaded down with trivial details, measure the series of problems of time length etc..Owing to the gas in vacuum chamber is substantially static, therefore can overcome the shortcoming because of gas flowing, laser optical path interfered in existing dry process, and then can realize being precisely separating granule.In addition, the present invention is used can to realize the molecule of extremely low content is separated.
The design of ratchet curved surface groove in particle separator so that form the plasma sheath of ratchet-shaped on its surface, this sheaths has unsymmetry, and the granule that disperse, left floating is bound in this plasma sheath.Opening semiconductor laser and chopper, and regulate the pulse frequency of chopper, under the promotion of laser, various sizes of granule moves to both direction respectively, thus realizes the separation of granule.Apparatus of the present invention simple in construction, easy to operate, and the granule of two kinds of various sizes of micron dimensions can be precisely separating.
Accompanying drawing explanation
Fig. 1 is the structural representation of dry type fines separation device in the present invention.
Fig. 2 is the 3-D solid structure schematic diagram of particle separator in Fig. 1.
In figure: 1, vacuum chamber, 2, top crown, 3, granule pond, 4, vibrating arm, 5, side window, 6, granule to be separated, 7, lifting platform, 8, semiconductor laser, 9, chopper, 10, beam expanding lens, 11, bottom crown, 12, particle separator, 12-1, ratchet curved surface groove, 12-2, disposable box, 13, vacuometer, 14, radio-frequency power supply, 15, controller.
Detailed description of the invention
As it is shown in figure 1, dry type fines separation device provided by the present invention includes that vacuum chamber 1, vacuum chamber 1 are surrounded by rustless steel cavity, rustless steel cavity earth lead；Upper and lower two pole plates, respectively top crown 2 and bottom crown 11 it have been horizontally disposed with in vacuum chamber 1.In the present embodiment, top crown 2 is relatively superimposed by two pieces of ITO electro-conductive glass and constitutes, and bottom crown 11 is metal plate.Top crown 2 earth lead, bottom crown 11 connects the power electrode of radio-frequency power supply 14, and another electrode earth lead of radio-frequency power supply 14, radio-frequency power supply 14 is positioned at outside vacuum chamber 1.Bottom crown 11 is when being connected with the power electrode of radio-frequency power supply 14, concrete connected mode is: in centre-drilling hole at the bottom of the plate of bottom crown 11, insulation sleeve it is socketed in the hole bored, cross-under plain conductor in insulation sleeve, bottom crown 11 by the plain conductor in insulation sleeve with vacuum chamber 1 outside the power electrode of radio-frequency power supply 14 electrically connect.Between the power electrode and bottom crown 11 of radio-frequency power supply 14, the electric capacity for regulating power match can be set.After radio-frequency power supply 14 is connected, the voltage of radio-frequency power supply 14 is constantly changing polarity, after discharge and recharge several times, eventually makes bottom crown 11 have back bias voltage, can produce uniform plasma by high-frequency discharge between upper and lower pole plate.The frequency-adjustable of radio-frequency power supply 14 is 13.56MHz, and power can be 1 ~ 60W.
Being provided with particle separator 12 on bottom crown 11, particle separator 12 is made by insulant, and its concrete structure is as shown in Figure 2.The bottom of particle separator is channel design planar structure, the most generally open top, indent, and this channel design includes the most again ratchet curved surface groove 12-1 and disposable box 12-2 at two ends of middle part.Ratchet curved surface groove 12-1 is to be adjoined successively by the evenly distributed ratchet of some indents and constitute, the cross section of ratchet is the dissymmetrical structure tilted, minor face (the also referred to as tooth depth of ratchet after ratchet inclination, or claim abrupt slope) tilt with ratchet after the ratio on long limit (the also referred to as tooth of ratchet is long, or gentle slope) be called 1:2.The both end sides of each ratchet is all bent upwards, and to make the curved surface flexibility of ratchet curved surface groove 12-1 be 180 °, in order to fetter granule to be separated.Two disposable boxes 12-2 lay respectively at the two ends, left and right of ratchet curved surface groove 12-1 along the direction of axis line of ratchet curved surface groove 12-1, and each disposable box 12-2 is all to be formed by being respectively provided with the short edge of semi-circular shape in the semi-circular recesses left and right sides of indent.After particle separator 12 is in the plasma environment between upper and lower pole plate, indent, the plasma sheath of ratchet-shaped can be formed on the surface of ratchet curved surface groove 12-1, form indent, semicircular plasma sheath on the cassette bottom surface of disposable box 12-2.
Above ratchet curved surface groove 12-1, the lower section of top crown 2 be provided with granule pond 3, be contained with granule 6 to be separated in granule pond 3, the granule of granule 6 generally two kinds of various sizes of micron dimensions to be separated.Granule pond 3 is suppressed by the multiple layer metal net of different meshes and is formed；The surface in granule pond 3 is preferably at level, and the center in granule pond 3 is on the axial line of upper and lower pole plate.Granule pond 3 is connected with vertical vibrating arm 4 by the connecting rod of level, and vibrating arm 4 passes outside vacuum chamber 1.Granule pond 3 can be made to move up and down by moving up and down vibrating arm 4 vacuum chamber 1 is outer, granule pond 3 can be made to move left and right by rotational vibrations bar 4 vacuum chamber 1 is outer；Outer by making vibrating arm 4 vibration that the granule to be separated 6 in granule pond 3 can be made to spread out outside granule pond 3 at vacuum chamber 1, the vibration of vibrating arm 4 can pass through manual hand manipulation, it is also possible to by electric operating, and during electric operating, its frequency can be 1 ~ 10Hz.Connecting rod between granule pond 3 and vibrating arm 4 is insulating bar, and its material can be politef；This insulating bar is possible to prevent granule pond 3 to damage vibrating arm 4 in heating region due to conduction.The granule to be separated 6 spread out by granule pond 3 can bring negative charge in plasma environment, and is finally suspended in the ratchet-shaped plasma sheath above bottom crown 11.
The cavity of vacuum chamber 1 has air inlet and gas outlet.Air or argon can be filled with in vacuum chamber 1 by air inlet；Vacuometer 13 for measuring vacuum chamber 1 internal gas pressure is installed at gas outlet.Air pressure general control in vacuum chamber 1 is between 5 ~ 200Pa.
Having two relative side windows 5 on the cavity of vacuum chamber 1, the line of two side windows 5 is exactly on the axial line of particle separator 12, so that the corresponding disposable box of each side window 5.Being respectively provided with a semiconductor laser 8 at the outer position corresponding with each side window 5 of vacuum chamber 1, the power bracket of semiconductor laser 8 is 0.01 ~ 2W, and the centre wavelength of the sent out laser of semiconductor laser 8 is 532nm or 650nm.It is equipped with a chopper 9 in the front (i.e. towards a side of side window) of each semiconductor laser 8, is equipped with a beam expanding lens 10 in the front of each chopper 9.Semiconductor laser 8, chopper 9 and beam expanding lens 10 three outside side window 5 constitute a light dynamical system.Light dynamical system is arranged on lifting platform 7, and lifting platform 7 is connected with motor.In the present embodiment, the minimum step of motor is up to micron dimension, therefore accurately can be scanned the granule of micron dimension thus preferably observe granule.Motor, semiconductor laser 8 and chopper 9 all with controller 15(for example, computer) connect, controller 15 1 aspect controls umber of pulse and the frequency of motor, to drive lifting platform 7 to move up and down, and then realize adjusting semiconductor laser 8, chopper 9 and the height of beam expanding lens 10 so that the sent out laser of semiconductor laser 8 can be irradiated in the ratchet concave groove in vacuum chamber 1.Controller 15 the most also controls irradiation time and the pulse frequency of chopper 9 of semiconductor laser 8.Should ensure that the laser that two semiconductor lasers 8 are sent out is on same straight line by setting, and the light intensity of two sent out laser of semiconductor laser 8 is equal.
Chopper 9 is positioned at the front of semiconductor laser 8, and its effect is the pulse frequency of regulation the sent out laser of semiconductor laser 8；Beam expanding lens 10 expands for the sent out laser of noise spectra of semiconductor lasers 8, so that laser all granules to be separated that left floating in can irradiating ratchet curved surface groove.Under the irradiation of laser, in addition the effect of ratchet curved surface groove ratchet-shaped plasma sheath formed in the plasma environment, by regulating the pulse frequency (i.e. realizing the adjustment to laser pulse frequency) of chopper 9, select suitable chopper frequencies, the various sizes of two kinds of granules in granule 6 to be separated can be made to move along ratchet curved surface fluted shaft heart alignment rightabout respectively, to reach to separate purpose.Owing to the natural frequency of different size granule is different, and in ratchet curved surface groove, each ratchet has unsymmetry, it may be assumed that the gradient of ratchet both sides is different；For large-size particle, its natural frequency low cycle is long, and position is relatively low, relatively the easiest, so large-size particle is to side, gentle slope displacement by gentle slope；For small sized particles, its natural frequency higher cycle is short, and position is higher, relatively the easiest, so small sized particles is to side, abrupt slope displacement by abrupt slope.And the little granule motion of size relatively the most hurry up, the granule motion that size is big more relatively slow.When in the plasma sheath above granule moves to disposable box, owing to losing the effect of ratchet-shaped plasma sheath, therefore granule will no longer move.After in plasma sheath above large-size particle and small sized particles respectively enter two disposable boxes; close radio-frequency power supply; make no longer to produce between upper and lower pole plate plasma; that is: the plasma sheath above disposable box is made to disappear; now large-size particle and small sized particles meeting free-falling, and then respectively two kinds of various sizes of granules are collected by two disposable boxes.
The process that the granule of two kinds of various sizes of micron dimensions in the present invention separates is introduced below with an object lesson.
In conjunction with Fig. 1 and Fig. 2, the length of bottom crown 11 and particle separator 12 is 100mm, and particle separator 12 is glass material.The curved surface flexibility of ratchet curved surface groove is 180 degree, and the ratchet number in ratchet curved surface groove is 18, and the tooth depth of each ratchet is 3mm, a length of 6mm of tooth.Comprising two kinds of various sizes of granules in granule 6(granule to be separated 6 to be separated, one of which particle size is 23 μm, and another kind of particle size is 10 μm) it is placed in the granule pond 3 in vacuum chamber 1；Regulation vacuum chamber 1 internal gas pressure reaches 10Pa.The power arranging radio-frequency power supply 14 is 20W, connects radio-frequency power supply 14, makes bottom crown 11 have back bias voltage, produce uniform plasma by high-frequency discharge between upper and lower pole plate.
Opening semiconductor laser 8, arranging its power is 50mW, and the centre wavelength of the sent out laser of semiconductor laser 8 is 532nm.The laser that semiconductor laser 8 is sent out forms laser beam after beam expanding lens 10 expands.By regulating the horizontal level of beam expanding lens 10, the laser beam making laser be formed after beam expanding lens 10 can cover the width range of ratchet curved surface groove.Controlling umber of pulse and the frequency of motor, the height of regulation lifting platform 7, in making the ratchet curved surface groove that horizontal plane laser beam can be irradiated in vacuum chamber 1.
Electric operating vibrating arm 4 is so that granule pond 3 is in the center position of upper and lower pole plate.Make vibrating arm 4 vibrate outside vacuum chamber 1, thus drive the granule pond 3 in vacuum chamber 1 to vibrate so that the granule in granule pond 3 spreads out.After having spread granule, granule pond 3 is moved apart heating region by rotational vibrations bar 4.
The granule to be separated 6 spread out enters in heating region, in plasma, the ion of electronegative electronics and positively charged can run up on granule 6 to be separated, movement velocity due to electronics is much larger than the movement velocity of ion, and therefore when the electron stream run up on granule 6 to be separated and ion stream reach balance, granule typically can bring a certain amount of negative charge.Granule can move downward due to the effect of gravity in heating region；When granule 6 to be separated drops near ratchet curved surface groove, owing to bottom crown 11 has nagative potential, therefore granule is by by applied force of electrostatic field upwards.When the gravity that granule is subject to and electrostatic field force reach balance, granule is by suspension and is bound in curved surface ratchet-like glass guide channel.Simultaneously as granule all carries negative charge, by mutually exclusive between them, thus it scatter, form a good dispersion suspension system.
The height of regulation lifting platform 7, makes laser beam irradiation to the granule to be separated 6 in ratchet sheaths groove.The frequency of regulation chopper 9, enables granule stable suspersion among the groove of ratchet sheaths, then regulates the pulse frequency of chopper 9, make particle produce displacement, to reach the purpose separating various sizes of particle.
The present invention is used to separate simple to operate during two kinds of various sizes of granules, quick, pollution-free, well achieve the separation to different size micron dimension molecule.
Claims (10)
1. a dry type fines separation device, is characterized in that, including vacuum chamber, top crown and bottom crown it has been horizontally disposed with in described vacuum chamber, described top crown earth lead, described bottom crown connects the power electrode of radio-frequency power supply, another electrode earth lead of radio-frequency power supply；Being provided with particle separator on described bottom crown, described particle separator includes ratchet curved surface groove and the disposable box at two ends that middle part is adjacent successively by the ratchet of some indents and constitutes；In the granule pond being provided above for holding granule to be separated of described ratchet curved surface groove, described granule pond connects the vibrating arm passing described vacuum chamber；A disposable box in two relative semiconductor lasers, and each semiconductor laser corresponding described particle separator respectively it is provided with in the outside of described vacuum chamber；It is equipped with a chopper in the front of each semiconductor laser, is equipped with a beam expanding lens in the front of each chopper.
Dry type fines separation device the most according to claim 1, is characterized in that, described semiconductor laser, described chopper and described beam expanding lens are arranged on lifting platform, and described lifting platform is connected with motor.
Dry type fines separation device the most according to claim 2, it is characterized in that, described motor, described semiconductor laser and described chopper all connect with controller, described controller can control the work of described motor, to drive lifting platform to move up and down, and then realize adjusting described semiconductor laser, described chopper and the height of described beam expanding lens；Described controller also can control irradiation time and the pulse frequency of described chopper of described semiconductor laser.
Dry type fines separation device the most according to claim 1, is characterized in that, described particle separator is made up of insulant.
Dry type fines separation device the most according to claim 1, is characterized in that, the curved surface flexibility of described ratchet curved surface groove is 180 °.
Dry type fines separation device the most according to claim 5, is characterized in that, described disposable box is to be formed by being respectively provided with the short edge of semi-circular shape in the semi-circular recesses both sides of indent.
Dry type fines separation device the most according to claim 1, is characterized in that, granule to be separated is the granule of two kinds of various sizes of micron dimensions.
Dry type fines separation device the most according to claim 1, is characterized in that, the tooth depth of described ratchet and the long ratio of tooth are 1:2.
Dry type fines separation device the most according to claim 1, is characterized in that, described vacuum chamber is surrounded by rustless steel cavity, and rustless steel cavity earth lead；The sidewall of described rustless steel cavity is provided with two relative side windows, the corresponding semiconductor laser of each side window；In the ratchet curved surface groove that the laser that described semiconductor laser is sent out is irradiated in vacuum chamber after corresponding side window.
Dry type fines separation device the most according to claim 1, is characterized in that, described granule pond is suppressed by the multiple layer metal net of different meshes and formed；Described vibrating arm is in being vertically arranged, and described granule pond is connected with described vibrating arm by horizontally disposed insulating bar.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113231201A (en) * | 2021-05-07 | 2021-08-10 | 庄乾龙 | Environment-friendly automatic fly ash storage and transportation and fine separation system |
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| CN1043590A (en) * | 1988-12-08 | 1990-07-04 | 阿斯特兰万蒂股份公司 | The improvement of the corona discharge assembly of the harmful substance that the removal corona discharge produces |
| EP1380346A1 (en) * | 2001-03-27 | 2004-01-14 | Kawasaki Jukogyo Kabushiki Kaisha | Method for electrostatically separating particles, apparatus for electrostatically separating particles, and processing system |
| JP2002346433A (en) * | 2001-05-28 | 2002-12-03 | Hitachi Zosen Corp | Method and device for sorting plastic by vibration |
| CN1871058A (en) * | 2003-09-04 | 2006-11-29 | 阿尔利克斯公司 | Multiple laminar flow-based particle and cellular separation with laser steering |
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| CN113231201A (en) * | 2021-05-07 | 2021-08-10 | 庄乾龙 | Environment-friendly automatic fly ash storage and transportation and fine separation system |
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