CN201728058U - Dielectrophoresis separation system for heavy metal recovery - Google Patents
Dielectrophoresis separation system for heavy metal recovery Download PDFInfo
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- CN201728058U CN201728058U CN201020285656XU CN201020285656U CN201728058U CN 201728058 U CN201728058 U CN 201728058U CN 201020285656X U CN201020285656X U CN 201020285656XU CN 201020285656 U CN201020285656 U CN 201020285656U CN 201728058 U CN201728058 U CN 201728058U
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- dielectrophoresis
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Abstract
The utility model relates to a dielectrophoresis separation system for heavy metal recovery, which comprises a mixing tank, a separating chamber and a collector. The dielectrophoresis separating chamber is a vertical hexagonal cylinder, six edges of the hexagonal cylinder are all fixedly provided with stainless steel electrode sheets, insulated wire electrodes are uniformly mounted at the center axis in the hexagonal cylinder corresponding to different stainless steel electrode sheets, the collector is mounted under the insulated wire electrodes and coaxially disposed at the lower end of the dielectrophoresis separating chamber, a hopper is mounted in the collector corresponding to the lower ends of the insulated wire electrodes and communicated with an output pipe, and a circulation outlet is arranged at the bottom of the collector. According to unique high selectivity and high controllability of a dielectrophoresis principle in physical chemistry, the dielectrophoresis separation system catches unsegregated heavy metal particles in heavy metal wastes to recover the heavy metal particles to the utmost extent and minimize environmental pollution caused by heavy metal, is a novel environment-friendly, high-efficient continuous separation process for separating heavy metal in tailings and wastes, is energy-saving, and is favorable for further separation of heavy metal in lean ores and tailings in our country.
Description
Technical field
The utility model belongs to separation technology field, relates to the noble metal separation and Extraction of precious metal minerals such as gold, especially a kind of dielectrophoresis separation system that reclaims precious metal.
Background technology
Precious metal, for example golden, silver, platinum etc., often small (diameter micron or less than the micron) particle with free state remains in mine tailing or the rubbish (as electronic waste), and there is concentration very low (it is per ton often to be lower than the hundreds of milligram) in it, and exist with ultra-thin shred, geometry is inhomogeneous, and size distribution does not wait, and this specific existing way can not be separated effectively by conventional separation method.As continue to use of the extraction of the separation method in former (richness) ore deposit to precious metal remaining in the mine tailing, and because particle concentration is too low, required investment is big, separative efficiency is low, and environmental pollution is serious.Equally, in disposal of refuse, during contained noble metal particles, be usually used in the chemical method of raw ore isolation technics,, and can cause the environmental pollution of very severe because chemical reagent not only cannot be isolated precious metal for the chemical reaction of plastics etc.Conventional physical separation method then can't be separated tiny and ultra-thin noble metal particles like this.In addition, the magnetization method also is suggested and is used to separate precious metal, but its separative efficiency is low excessively, and industrial automatization is low.
By patent retrieval, do not find as yet to adopt the dielectrophoresis principle to reclaim the report of the special equipment of precious metal.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, and the dielectrophoresis separation system of the recovery precious metal of a kind of environmental protection, continuous high-efficient is provided.
The purpose of this utility model is achieved through the following technical solutions:
A kind of dielectrophoresis separation system that reclaims precious metal comprises mixer, separation chamber and gatherer, and mixer separates to separation chamber's input mixture material and in the separation chamber, and the precious metal after the separation is collected through gatherer, it is characterized in that:
(1) mixer is provided with charging aperture, and the bottom of this mixer is provided with water inlet pipe, and mixer is provided with discharge nozzle, and this discharge nozzle is communicated with the dielectrophoresis separation chamber, and the below of mixer is provided with the dielectrophoresis separation chamber;
(2) the dielectrophoresis separation chamber is six vertical rib tubulars, six limits in six rib tubes all are fixed with a Thin Stainless Steel plate electrode, the uniform insulated electric conductor electrode that is equipped with in axis position in six rib tubes of corresponding each Thin Stainless Steel plate electrode is installed gatherer below the insulated electric conductor electrode;
(3) be coaxially installed with gatherer in lower end, dielectrophoresis separation chamber, corresponding insulated electric conductor electrode lower end is equipped with a funnel organ in gatherer, and this funnel organ is communicated with an efferent duct, is provided with loop exit at the lower bottom part of gatherer.
And discharge nozzle is provided with valve.
And described dielectrophoresis separation chamber is positive six rib tubulars.
Advantage of the present utility model and good effect are:
1, the utility model designs whole flow process with isolated yield according to specific requirement, makes the separation process modularization, the separating technology continuous controllableization.Water circulation craft can make water recycle and economize on water, and plays the effect that cooling reduces electrocaloric effect; Two step separations (just separate and separate eventually) can make separation purity near 100%; The recirculation separation process of impurity is to guarantee that the precious metal separative efficiency is near 100%; The design of triangle separation chamber has been strengthened effect of electric field with energy-conservation, the separation chamber's design of hexagon row formula makes the application of dielectrophoresis require to amplify to be suitable for commercial Application according to reality, fill up precious metal and recycle the blank of separating technology, and environmental protection, continuous high-efficient.
2, the utility model by high selectivity, the high controllability of using dielectric principle of electrophoresis uniqueness in the physical chemistry catch unsegregated precious metal particles in the precious metal refuse with reach at utmost reclaim and with precious metal the environmental pollution that may cause be reduced to minimum, be that a brand-new environmental protection, efficient, continuous separation technology are used for separating the precious metal that reclaims mine tailing and rubbish, environmental protection and energy saving will help the further separation of China to the precious metal of precious metal lean ore and mine tailing.
Description of drawings
Fig. 1 is the utility model special equipment profile front view;
Fig. 2 is the cross-sectional view of Fig. 1;
Fig. 3 is that the A-A of Fig. 2 is to cross-sectional view.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment is described further to the utility model; Following embodiment is illustrative, is not determinate, can not limit protection domain of the present utility model with following embodiment.
A kind of dielectrophoresis separation system that reclaims precious metal, comprise mixer 4, separation chamber 6 and collecting chamber 8, mixer is positioned at the top of separation chamber, its discharge nozzle 5 is communicated with the separation chamber, the coaxial installation collecting chamber in the lower end of separation chamber, collecting chamber is exported the precious metal that separates by efferent duct 9.Concrete structure is:
Mixer is provided with charging aperture 2, this charging aperture is used to throw in mixed material, the bottom of this mixer is provided with water inlet pipe 1, enter mixer by this water inlet pipe pump water, adopt this water that pressure is arranged that the separation of material in the mixer is washed into suspension, discharge nozzle set on mixer imports suspension into the dielectrophoresis separation chamber.Discharge nozzle is provided with valve 3, can not enter the dielectrophoresis separation chamber with control suspension before giving electrifying electrodes; Valve is preferably selected electric control valve, to guarantee constant input flow rate, also can reach the constant of control suspension input flow rate by selecting controllable pump certainly.
The suspension that forms at mixer enters the dielectrophoresis separation chamber through discharge nozzle, this dielectrophoresis separation chamber is designed to six vertical rib tubulars, the best is positive six rib tubulars, six limits in six rib tubes all are fixed with a Thin Stainless Steel plate electrode 11, the uniform insulated electric conductor electrode 12 that is equipped with in axis position in six rib tubes of corresponding each Thin Stainless Steel plate electrode, each Thin Stainless Steel plate electrode and pairing insulated electric conductor electrode form an asymmetric electric field, form six asymmetric electric fields in the separation chamber.Each group insulated electric conductor electrode will be joined together by the bottom, separation chamber and be connected to power connection, the Thin Stainless Steel plate electrode is then by coupling together the output that then be connected to power supply by an electric wire with all electrodes at the aperture that separates locular wall, the required effective voltage 190V in separation chamber, frequency 220kHz.Because the positive dielectrophoresis character that precious metal showed, noble metal particles contained in the suspension will be attached on the insulated electric conductor electrode, in the gatherer of being installed below the insulated electric conductor electrode slides into because it has higher proportion with respect to glassware for drinking water.The bottom of insulated electric conductor electrode is longer than Thin Stainless Steel plate electrode, generally between 0.1-5cm.If there is not this design, then can causes precious metal to pile up one by one along direction of an electric field and form a chain strip and washed away by current easily at discharging opening; In addition, even be not flushed away, thereby because the strong electric conductivity of precious metal and be attached to a part that has formed electrode on the insulated electric conductor electrode, so along with the growth gradually of precious metal chain, electric-field intensity and electric current increase, and cause localized hyperthermia.If precious metal chain long enough and touch down another electrode, short circuit will take place, and causes harm such as power supply damage.
For fear of the electric field that interfere with electrode produced, the separation chamber adopts insulating materials to make.
By flange 7 gatherer is installed in that lower end, dielectrophoresis separation chamber is coaxial, corresponding insulated electric conductor electrode lower end adopts support 14 that a funnel organ 13 is installed in gatherer, and this funnel organ is by efferent duct 9 output precious metals; The design of funnel organ is that comparing with noble metal particles because of the contaminant particles in the suspension can be very little, so its dielectrophoresis force will be littler under a low relatively voltage initial conditions and reach the highest separation purity.So, under identical voltage input condition, its displacement is also just very little.In other words, certain voltage input can be adsorbed all precious metals, but can guarantee that not necessarily contaminant particles can not enter into gatherer.
Lower bottom part at gatherer is provided with loop exit 10, and this loop exit can carry out separation recycling with entering next dielectrophoresis separation chamber through the suspension that separates.The number of times that circulates in separation is to decide in the concentration of original mixture according to different precious metals, for example, if the precious metal concentration height that is contained, and suitable with other particle size, one-level just can reach efficient separation in theory.But impurity diameters such as the clay that often contains in industrial (for example mine tailing), dust are greatly between tens nanometers to, hundred nanometers, and the precious metal diameter that is contained is mostly greater than several microns.So,, just must increase the progression that separates if reach the high-purity that precious metal separates.So entire separation system is that medelling is to design the required progression of separating technology according to concrete separate object.
Experimental data of the present utility model:
With golden particulate is example, and just the separative efficiency of separating is 88%, separates to such an extent that separation efficient can be 97% eventually.By circulation, final purification efficiency can reach 100%.
Certainly, contained particulate composition difference in the various mixtures, vary in size, character also may be different, but for example gold, platinum etc. exist with free state mostly owing to precious metal, exist with the chemical combination attitude and other materials are many, when water during as medium, all dielectrophoresis character that precious metal showed is identical with the dielectrophoresis force under the same electric field intensity effect.So when the content of identical precious metal in mixture is identical, particle size is similar, the efficient of its separation also is identical.Even if differ greatly, because two steps were separated the design of continuous circulation process, its final separative efficiency also should reach 100% "
The operation principle that the utility model is used is:
Dielectrophoresis (Dielectrophoresis) technology has been applied to by success that biomedical industries is separated, richness is amassed, catch particulate and cell.This technical description be the neutral corpuscle that is positioned at non-well-balanced electric field owing to translational motion that the effect of dielectric polarization produces.Be created in dipole moment on the particulate can be by two identical carried charges but opposite polarity electric charge represent, when they during asymmetric distribution, produce the dipole moment of a macroscopic view on the particulate interface.When this dipole moment is arranged in the unshapeliness electric field, produce a clean power in the difference of the local electric field strength on particulate both sides, be called dielectrophoresis force.Because the particulate that is suspended in the media has different dielectric properties (dielectric constant) with media; particulate can by to or the direction of stronger electric-field intensity move; be called positive dielectrophoresis, the direction of perhaps more weak electric-field intensity moves, and is referred to as negative dielectrophoresis.
Because noble metal particles exists with free state, the dielectric properties of precious metal is defined as infinity, so be suspended in the effect that noble metal particles in any media will show positive dielectrophoresis, that is: noble metal particles will be moved to the direction of stronger electric-field intensity; And because other mineral matter impurity that are present in the precious metal ore deposit can not exist with free state, their dielectric properties is all less than water.So, when these impurity are suspended in the water and place the unshapeliness electric field, will showing the effect of negative dielectrophoresis, that is: these impurity will be moved to the direction opposite with the moving direction of noble metal particles.So when the mixture that contains noble metal particles suspends in water and be placed in the unshapeliness electric field, noble metal particles will be moved to the direction opposite with other materials individually, thereby reach the purpose of separating and purifying.
Yet, because high electric-field intensity is in the technical use of dielectrophoresis, among the technology that a kind of side effect (electrothermal) that is called as electrocaloric effect can often result from dielectrophoresis is used.To such an extent as to this electrocaloric effect can cause flowing of media to influence the motion of particulate; In addition, the application of dielectrophoresis is often limited to by the effect of High frequency filter, this is because the insulating barrier and the media of electrode, electrode have constituted a high-frequency filter circuit jointly, so, when electric field frequency hangs down, in the dielectrophoresis system, needs are provided higher voltage satisfying the electric-field intensity that drives particle movement, thus the consumption that has improved electric energy.
Claims (3)
1. a dielectrophoresis separation system that reclaims precious metal comprises mixer, separation chamber and gatherer, and mixer separates to separation chamber's input mixture material and in the separation chamber, and the precious metal after the separation is collected through gatherer, it is characterized in that:
(1) mixer is provided with charging aperture, and the bottom of this mixer is provided with water inlet pipe, and mixer is provided with discharge nozzle, and this discharge nozzle is communicated with the dielectrophoresis separation chamber, and the below of mixer is provided with the dielectrophoresis separation chamber;
(2) the dielectrophoresis separation chamber is six vertical rib tubulars, six limits in six rib tubes all are fixed with a Thin Stainless Steel plate electrode, the uniform insulated electric conductor electrode that is equipped with in axis position in six rib tubes of corresponding each Thin Stainless Steel plate electrode is installed gatherer below the insulated electric conductor electrode;
(3) be coaxially installed with gatherer in lower end, dielectrophoresis separation chamber, corresponding insulated electric conductor electrode lower end is equipped with a funnel organ in gatherer, and this funnel organ is communicated with an efferent duct, is provided with loop exit at the lower bottom part of gatherer.
2. the dielectrophoresis separation system of recovery precious metal according to claim 1 is characterized in that: discharge nozzle is provided with valve.
3. the dielectrophoresis separation system of recovery precious metal according to claim 1 is characterized in that: described dielectrophoresis separation chamber is positive six rib tubulars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020285656XU CN201728058U (en) | 2010-08-09 | 2010-08-09 | Dielectrophoresis separation system for heavy metal recovery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020285656XU CN201728058U (en) | 2010-08-09 | 2010-08-09 | Dielectrophoresis separation system for heavy metal recovery |
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| CN201728058U true CN201728058U (en) | 2011-02-02 |
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| CN201020285656XU Expired - Lifetime CN201728058U (en) | 2010-08-09 | 2010-08-09 | Dielectrophoresis separation system for heavy metal recovery |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890296A (en) * | 2010-08-09 | 2010-11-24 | 天津富金环境技术研究有限公司 | Dielectrophoresis separation system for recycling precious metals |
| WO2012019446A1 (en) * | 2010-08-09 | 2012-02-16 | 天津富金环境技术研究有限公司 | Method for continuously recycling valuable metal by dielectrophoresis without pollution |
| DE102013011723A1 (en) | 2013-07-15 | 2015-01-15 | Universität Bremen | Method and apparatus for separating a mixture comprising a conductive material and a non-conductive material |
| CN106000101A (en) * | 2016-06-15 | 2016-10-12 | 沈阳化工大学 | Method for separating phenylalanine, tyrosine and tryptophan racemates |
-
2010
- 2010-08-09 CN CN201020285656XU patent/CN201728058U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890296A (en) * | 2010-08-09 | 2010-11-24 | 天津富金环境技术研究有限公司 | Dielectrophoresis separation system for recycling precious metals |
| WO2012019446A1 (en) * | 2010-08-09 | 2012-02-16 | 天津富金环境技术研究有限公司 | Method for continuously recycling valuable metal by dielectrophoresis without pollution |
| CN101890296B (en) * | 2010-08-09 | 2012-07-04 | 天津富金环境技术研究有限公司 | Dielectrophoresis separation system for recycling precious metals |
| DE102013011723A1 (en) | 2013-07-15 | 2015-01-15 | Universität Bremen | Method and apparatus for separating a mixture comprising a conductive material and a non-conductive material |
| WO2015007270A1 (en) | 2013-07-15 | 2015-01-22 | Universtität Bremen | Method and device for separating a mixture comprising a conductive material and a non-conductive material |
| DE102013011723B4 (en) * | 2013-07-15 | 2016-06-09 | Universität Bremen | Method and apparatus for separating a mixture comprising a conductive material and a non-conductive material |
| CN106000101A (en) * | 2016-06-15 | 2016-10-12 | 沈阳化工大学 | Method for separating phenylalanine, tyrosine and tryptophan racemates |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110202 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |