CN109127127A - A kind of recycling silicon material selects device and method of selecting - Google Patents
A kind of recycling silicon material selects device and method of selecting Download PDFInfo
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- CN109127127A CN109127127A CN201811291072.0A CN201811291072A CN109127127A CN 109127127 A CN109127127 A CN 109127127A CN 201811291072 A CN201811291072 A CN 201811291072A CN 109127127 A CN109127127 A CN 109127127A
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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
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/10—Magnetic separation acting directly on the substance being separated with cylindrical material carriers
- B03C1/14—Magnetic separation acting directly on the substance being separated with cylindrical material carriers with non-movable magnets
-
- 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
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/23—Magnetic separation acting directly on the substance being separated with material carried by oscillating fields; with material carried by travelling fields, e.g. generated by stationary magnetic coils; Eddy-current separators, e.g. sliding ramp
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Abstract
The present invention relates to a kind of recycling silicon materials to select device, belongs to photovoltaic technology field, it solves the problems, such as that it is not high to select purity for silicon material in the prior art.It includes rack that this recycling silicon material, which selects device, cabinet, the cabinet is equipped with feed hopper, equipped with the first magnetic roller and the power device for driving the first magnetic roller to rotate in cabinet, first magnetic roller rotates counterclockwise, first magnetic roller includes the first roller and the first magnetic system for being set to rounded eccentric setting in the first magnetic roller, it is located at left side below first magnetic roller and is equipped with silicon material collecting vessel, it is located at right side below first magnetic roller and is equipped with the first impurity collecting vessel, it is located above the first impurity collecting vessel on the right side of first magnetic roller and is equipped with material scraping plate, top is equipped with impurity collecting drum on the right side of first magnetic roller, fixed magnetic system is equipped in impurity collecting drum, the rotating device of driving impurity collecting drum rotation is equipped in the cabinet.This recycling silicon material selects device and carries out preliminary magnetic separation by the first magnetic roller, carries out secondary magnetic separation by feeding plate, so that the recycling silicon material magnetic impurity after being selected accomplishes minimum, effectively increases the purity of silicon material.
Description
Technical field
The invention belongs to photovoltaic technology field, be related to a kind of silicon material selects device, especially a kind of removal silicon material metal
Impurity selects device.
Background technique
Solar power generation is the important means of human use's solar energy, and solar battery is then the master for realizing photoelectric conversion
Device is wanted, the photoelectric conversion efficiency of solar battery determines the utilization conversion ratio of solar energy source.In recent years, world's solar-electricity
The speed of the yield in pond and installed capacity every year all 30% is fast-developing.Currently, the accumulative installed capacity in the whole world is 25.4GW, in advance
It counts the installed capacity of the year two thousand twenty whole world and is up to 278GW.
Recently as silicon solar industry high speed development, market competition is more and more fierce, to reduce silicon wafer production cost,
Silicon wafer is improved in market competition, the useless silicon material that production process generates need to be recycled and be used.It recycles and exists in the broken silicon material used
Iron, cobalt, nickel contamination in magnetic metal will lead to silicon wafer and form defect, seriously affect silicon chip battery efficiency.Therefore for recycling silicon
Selecting for material becomes the important ring for influencing polysilicon chip.Mostly use dry type multiple roll magnetic separator in silicon material greatly in the prior art
Metal impurities selected, however in selection process, if magnetic roller magnetism is stronger, the impurity that will lead in magnetic roller not can be removed,
Magnetic roller magnetism is weaker, and will affect and select efficiency, causes magnetic metal impurity to be selected unclean.
Summary of the invention
The purpose of the present invention is there is the above problem in view of the prior art, proposes and a kind of metal impurities is facilitated to recycle
Recycling silicon material selects device.
Object of the invention can be realized by the following technical scheme: a kind of recycling silicon material selects device, including rack, case
Body, the cabinet are equipped with feed hopper, the power dress equipped with the first magnetic roller and driving the first magnetic roller rotation in the cabinet
It sets, it is characterised in that: first magnetic roller rotates counterclockwise, and first magnetic roller includes the first roller and is set to first
First magnetic system of rounded eccentric setting in magnetic roller, the first magnetic roller lower section is located at left side and is equipped with silicon material collecting vessel, described
The first magnetic roller below be located at right side be equipped with the first impurity collecting vessel, the silicon material collecting vessel bottom be equipped with secondary discharge port,
Inclined feeding plate is equipped with below the secondary discharge port, the feeding plate rear end is equipped with strip electromagnet, described
Feeding plate be equipped with vibration motor, the feeding plate end be equipped with finished product collecting vessel and the second impurity collecting vessel, it is described
Rack is equipped with the switching device of changeable finished product collecting vessel and the second impurity collecting vessel.
By the unlatching of strip electromagnet, when so that silicon material and impurity gliding along feeding plate, impurity is adsorbed on blanking
On plate, silicon material is automatically fallen into finished product collecting vessel, after blanking to be done, when needing to clear up the impurity adsorbed on feeding plate, is only needed
Feeding plate end is switched into the second impurity collecting vessel, then the power supply of tripping magnet, and it is sliding by impurity to open vibration motor
It drops down onto the second impurity collecting vessel.First magnetic roller carries out the first step to the magnetic impurity in silicon material and selects, and feeding plate is to silicon
Magnetic impurity in material is selected for the second time, therefore secondary its impurity content when selecting is less, can after working long hours,
Switch the second impurity collecting vessel before maintenance shut-downs, the impurity on feeding plate is recycled.
It is selected in device in above-mentioned recycling silicon material, the switching device includes being set to the extension of feeding plate end
Plate, the extension board bottom are equipped with telescopic cylinder, and the extension board end is equipped with above-mentioned second impurity collecting vessel, when described
Telescopic cylinder stretch out when, feeding plate is docked with extension board, and the impurity on feeding plate can be fallen directly into the second impurity collecting vessel,
It when the telescopic cylinder is withdrawn, is separated between extension board and feeding plate, the silicon material on feeding plate can fall directly into finished product receipts
Collect in bucket.
Alternatively, it is selected in device in above-mentioned recycling silicon material, the switching device includes being set to machine
Switching cylinder on frame, the finished product collecting vessel and the second impurity collecting vessel are connected, and are slideably positioned in the sliding rail in rack
On, the piston rod of the switching cylinder is connect with finished product collecting vessel, and when switching cylinder and stretching out, finished product collecting vessel is sliding along sliding rail
It moves to feeding plate end, when cylinder is withdrawn, finished product collecting vessel is withdrawn, and the second impurity collecting vessel is located at feeding plate end.
It is selected in device in above-mentioned recycling silicon material, is located above the first impurity collecting vessel on the right side of first magnetic roller and sets
There is material scraping plate, top is equipped with impurity collecting drum on the right side of first magnetic roller, fixed magnetic system is equipped in the impurity collecting drum,
The rotating device of driving impurity collecting drum rotation is equipped in the cabinet.Fixed magnetic system and reciprocating rotary are set in impurity collecting drum
It moves, so that the magnetic field between impurity collecting drum and the first magnetic roller constantly changes with the rotation of impurity collecting drum, so that the
Impurity on one roller loosens, and is more advantageous to impurity absorption on impurity collecting drum.
It is selected in device in above-mentioned recycling silicon material, the power device includes power motor, speed reducer and is set to
The center axis connection of bearing on first roller, the output shaft of the speed reducer and the first roller.
Selected in device in above-mentioned recycling silicon material, the rotating device include be set to impurity collecting drum axle center from
Driving wheel, the speed reducer output shaft are equipped with driving wheel, and driving belt is equipped between the driving wheel and driven wheel.
The magnetic system of first magnetic roller is located at left side, and the silicon material of the cabinet entered by feed hopper drives under the rotation of the first roller
Silicon material moves downward, and silicon material on the outside of the first roller due to without magnetism, then falling into silicon material collecting vessel, the metal in silicon material
Impurity is then because the magnetic fields of the first magnetic system are tightly attached on the outside of the first roller, when the rotation of the first roller, due to being tightly attached to the
Metal impurities on the outside of one roller are gradually distance from magnetic field where the first magnetic system, then the metal impurities of weak magnetic under the effect of gravity from
Dynamic to fall into the first impurity collecting vessel, ferromagnetic large granular impurity also falls into the first impurity collecting vessel under the action of material scraping plate
It is interior.For some ferromagnetism little particle impurity, both not because gravity is fallen or is not scraped by material scraping plate, then using miscellaneous
Fixation magnetic system on matter collecting drum adsorbs the strong magnetic impurity of little particle, and the size particles in all silicon materials are strong and weak magnetic since then
Metal impurities be all collected into the first impurity collecting vessel.
Another object of the present invention is to provide a kind of above-mentioned recycling silicon materials to select the method for selecting of device, including walks as follows
It is rapid: 1, open the first magnetic roller, so that the first roller rotates counterclockwise, pour into silicon material after crushing into feed hopper, silicon material with
The rotation of the first roller, the first roller slide to the left, non-magnetic silicon material then falls into silicon material on the outside of the first roller and collects
In bucket, magnetic impurity is then because the magnetic fields of the first magnetic system are adsorbed on the outside of the first roller;
2, the first roller is continued to rotate to when driving the impurity to turn to below the first magnetic system along the first roller, since magnetic field is strong
Degree reduces, and the impurity of low magnetism then fallen in the first impurity collecting vessel due to gravity, the ferromagnetism impurity not fallen after
It is continuous to be adsorbed on the outside of the first roller;
3, the first roller turns to scraper Board position, then under the active force of material scraping plate, the strong magnetic impurity of bulky grain is scraped
It falls into the first impurity collecting vessel;
4, above the first rollers roll to material scraping plate, only it is left the little particle impurity of some strong magnetic on the first roller, at this time
The magnetic field of impurity collecting drum cycle rotation, fixed magnetic system constantly changes, and strong magnetic impurity then loosens on the first roller, then
It is adsorbed on impurity collecting drum;
5, the recycling silicon material in silicon material collecting vessel slides to feeding plate, opens vibration motor, to landing on feeding plate
Silicon material carry out vibration blanking, at this time open strip electromagnet, then under the magnetic fields of strip electromagnet, have magnetism
Impurity be adsorbed on feeding plate bottom, not magnetic silicon material then continues to slide to the finished product collecting vessel of feeding plate end;
6, after completing finished product collection, switching device is opened, so that the end of feeding plate is switched to the second impurity collecting vessel, so
Strip electromagnet powers off afterwards, and in the case where lacking magnetic field, the impurity on feeding plate falls into the under the vibration of vibration motor
In two impurity collecting vessels, the separation of all magnetic impurities and silicon material is so far completed.
In above step, step 2,3,4 and step 5,6 can carry out simultaneously.
In the method for selecting that above-mentioned recycling silicon material selects device, the strip electromagnet impurity recycle when,
Reciprocal switching electromagnet polarity, then disconnects electromagnet power supply again, can make the impurity magnetic field being adsorbed on feeding plate in this way
Disorder will not can not slide because of impurity Long-Term Sorption same position, promote impurity blanking efficiency, so that impurity is collected more
Completely.
Compared with prior art, this recycling silicon material selects device and carries out preliminary magnetic separation by the first magnetic roller, passes through feeding plate
Secondary magnetic separation is carried out, the enterprising gravity screening of the first magnetic roller, scraper plate screening and the screening of impurity collecting drum three-wheel will be in the first magnetic rollers
Impurity collection is clean, and secondary magnetic separation further increases impurity collection using simultaneously adsorbing contaminant is slowly collected in vibration blanking process
Success rate effectively increases the purity of silicon material so that the recycling silicon material magnetic impurity after being selected accomplishes minimum.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that this recycling silicon material selects device.
In figure, 1, rack;11, cabinet;2, feed hopper;3, the first magnetic roller;31, the first magnetic system;4, the first impurity collecting vessel;
41, silicon material collecting vessel;411, secondary discharge port;42, material scraping plate;5, impurity collecting drum;51, fixed magnetic system;6, feeding plate;61,
Strip electromagnet;62, vibration motor;7, finished product collecting vessel;8, the second impurity collecting vessel;9, extension board;91, telescopic cylinder.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figure 1, this recycling silicon material selects device, including rack 1, cabinet 11, the cabinet 11 is equipped with charging
Bucket 2, the interior power device for being equipped with the first magnetic roller 3 and driving the first magnetic roller 3 rotation of the cabinet 11, it is characterised in that: described
The first magnetic roller 3 rotate counterclockwise, first magnetic roller 3 includes the first roller and being set to rounded bias in the first magnetic roller
The first magnetic system 31 being arranged is located at left side below first magnetic roller 3 and is equipped with silicon material collecting vessel 41, and described first
It is located at right side below magnetic roller 3 and is equipped with the first impurity collecting vessel 4, is located on the first impurity collecting vessel 4 on the right side of first magnetic roller 3
Side is equipped with material scraping plate 42, and the 3 right side top of the first magnetic roller is equipped with impurity collecting drum 5, is equipped in the impurity collecting drum 5
Fixed magnetic system, the interior rotating device for being equipped with driving impurity collecting drum rotation of the cabinet.The power device includes power electric
The center axis connection of machine, speed reducer and the bearing being set on the first roller, the output shaft of the speed reducer and the first roller.
The magnetic system of first magnetic roller 3 is located at left side, and the silicon material of the cabinet 11 entered by feed hopper 2 is under the rotation of the first roller
Silicon material is driven to move downward, silicon material on the outside of the first roller due to without magnetism, then falling into silicon material collecting vessel 41, in silicon material
Metal impurities then because the magnetic fields of the first magnetic system 31 are tightly attached on the outside of the first roller, when the rotation of the first roller, due to
It is tightly attached to the metal impurities on the outside of the first roller and is gradually distance from 31 place magnetic field of the first magnetic system, then the metal impurities of weak magnetic is in weight
It is automatically fallen into the first impurity collecting vessel 4 under power effect, ferromagnetic large granular impurity is also fallen under the action of material scraping plate 42
In first impurity collecting vessel 4.For some ferromagnetism little particle impurity, both not because gravity is fallen or not by material scraping plate
42 scrape, then are adsorbed using the fixation magnetic system 51 on impurity collecting drum 5 to the strong magnetic impurity of little particle, since then all silicon materials
In the strong and weak magnetic metal impurities of size particles be all collected into the first impurity collecting vessel 4.
This recycling silicon material is selected in device, 41 bottom of silicon material collecting vessel be equipped with secondary discharge port 411, described two
Inclined feeding plate 6 is equipped with below secondary discharge port 411,6 rear end of feeding plate is equipped with strip electromagnet 61, described
Feeding plate 6 is equipped with vibration motor 62, and 6 end of feeding plate is equipped with finished product collecting vessel 7 and the second impurity collecting vessel 8, institute
The rack 1 stated is equipped with the switching device of changeable finished product collecting vessel 7 and the second impurity collecting vessel 8.The switching device packet
The extension board 9 for being set to 6 end of feeding plate is included, 9 bottom of extension board is equipped with telescopic cylinder 91,9 end of extension board
End is equipped with above-mentioned second impurity collecting vessel 8, and when the telescopic cylinder 91 stretches out, feeding plate 6 is docked with extension board 9, blanking
Impurity on plate 6 can be fallen directly into the second impurity collecting vessel 8, when the telescopic cylinder 91 is withdrawn, extension board 9 and blanking
It is separated between plate 6, the silicon material on feeding plate 6 can be fallen directly into finished product collecting vessel 7.
By the unlatching of strip electromagnet 61, when so that silicon material and impurity gliding along feeding plate 6, impurity, which is adsorbed on, to be fallen
On flitch 6, silicon material is automatically fallen into finished product collecting vessel 7, after blanking to be done, when needing to clear up the impurity adsorbed on feeding plate 6,
6 end of feeding plate only need to be switched to the second impurity collecting vessel 8, then the power supply of tripping magnet, and open vibration motor 62
Impurity is slid to the second impurity collecting vessel 8.First magnetic roller 3 carries out the first step to the magnetic impurity in silicon material and selects,
Feeding plate 6 selects the magnetic impurity in silicon material for the second time, therefore secondary its impurity content when selecting is less, can be in length
After time service, switches the second impurity collecting vessel 8 before maintenance shut-downs, the impurity on feeding plate 6 is recycled.
The course of work that this recycling silicon material selects device is as follows: 1, the first magnetic roller 3 is opened, so that the first roller turns counterclockwise
It is dynamic, pour into silicon material after crushing into feed hopper 2, with the rotation of the first roller, the first roller slides silicon material to the left, nothing
Magnetic silicon material is then fallen into silicon material collecting vessel 41 on the outside of the first roller, and magnetic impurity is then because of the magnetic of the first magnetic system 31
Field action is adsorbed on the outside of the first roller;
2, the first roller continue to rotate to drive impurity turn to the first 31 lower section of magnetic system along the first roller when, due to magnetic field
Strength reduction, the impurity of low magnetism are then fallen in the first impurity collecting vessel 4 due to gravity, the ferromagnetism impurity not fallen
Continue to be adsorbed on the outside of the first roller;
3, the first roller turns to 42 position of material scraping plate, then under the active force of material scraping plate 42, the strong magnetic impurity quilt of bulky grain
It scrapes and falls into the first impurity collecting vessel 4;
4, above the first rollers roll to material scraping plate 42, only it is left the little particle impurity of some strong magnetic on the first roller, this
When 5 cycle rotation of impurity collecting drum, the magnetic field of fixed magnetic system 51 constantly changes, and pine then occurs on the first roller for strong magnetic impurity
It is dynamic, it is then adsorbed on impurity collecting drum.
5, the recycling silicon material in silicon material collecting vessel 41 slides to feeding plate 6, opens vibration motor 62, to landing in blanking
Silicon material on plate 6 carries out vibration blanking, opens strip electromagnet 61 at this time, then in the magnetic fields of strip electromagnet 61
Under, have magnetic impurity and be adsorbed on 6 bottom of feeding plate, not magnetic silicon material then continues to slide to 6 end of feeding plate
In finished product collecting vessel 7;
6, after completing finished product collection, switching device is opened, so that the end of feeding plate 6 is switched to the second impurity collecting vessel 8,
Then strip electromagnet 61 powers off, and in the case where lacking magnetic field, the impurity on feeding plate 6 is under the vibration of vibration motor 62
It falls into the second impurity collecting vessel 8, so far completes the separation of all magnetic impurities and silicon material.
In above step, step 2,3,4 and step 5,6 can carry out simultaneously.
For the blanking for further strengthening impurity, in the strip electromagnet 61 when impurity recycles, reciprocal switching electricity
Then magnet polarities disconnect electromagnet power supply again, can make the impurity magnetic field disorder being adsorbed on feeding plate 6 in this way, will not
It can not be slid because of impurity Long-Term Sorption same position, promote impurity blanking efficiency, so that impurity collection is cleaner.
This recycling silicon material selects device and carries out preliminary magnetic separation by the first magnetic roller 3, carries out secondary magnetic separation by feeding plate 6,
The enterprising gravity screening of first magnetic roller 3, scraper plate screening and the screening of 5 three-wheel of impurity collecting drum, the impurity in the first magnetic roller 3 are collected dry
Only, secondary magnetic separation further increases impurity and collects success rate using simultaneously adsorbing contaminant is slowly collected in vibration blanking process, so that
Recycling silicon material magnetic impurity after being selected accomplishes minimum, effectively increases the purity of silicon material.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (8)
1. a kind of recycling silicon material selects device, including rack, cabinet, the cabinet is equipped with feed hopper, in the cabinet
Power device equipped with the first magnetic roller and driving the first magnetic roller rotation, it is characterised in that: first magnetic roller rotates counterclockwise,
First magnetic roller includes the first roller and the first magnetic system for being set to rounded eccentric setting in the first magnetic roller, and described
It is located at left side below one magnetic roller and is equipped with silicon material collecting vessel, is located at right side below first magnetic roller and is collected equipped with the first impurity
Bucket, the silicon material collecting vessel bottom are equipped with secondary discharge port, are equipped with inclined feeding plate below the secondary discharge port,
The feeding plate rear end is equipped with strip electromagnet, and the feeding plate is equipped with vibration motor, the feeding plate end
Equipped with finished product collecting vessel and the second impurity collecting vessel, the rack is equipped with changeable finished product collecting vessel and the second impurity is collected
The switching device of bucket.
2. a kind of recycling silicon material according to claim 1 selects device, it is characterised in that: the switching device includes setting
It is placed in the extension board of feeding plate end, the extension board bottom is equipped with telescopic cylinder, and the extension board end is equipped with above-mentioned
Second impurity collecting vessel, when the telescopic cylinder stretches out, feeding plate is docked with extension board, and the impurity on feeding plate can be direct
It falls into the second impurity collecting vessel, when the telescopic cylinder is withdrawn, is separated between extension board and feeding plate, on feeding plate
Silicon material can be fallen directly into finished product collecting vessel.
3. a kind of recycling silicon material according to claim 1 selects device, it is characterised in that: the switching device includes setting
The switching cylinder being placed in rack, the finished product collecting vessel and the second impurity collecting vessel are connected, and are slideably positioned in rack
Sliding rail on, the piston rod of the switching cylinder is connect with finished product collecting vessel, when switch cylinder stretch out when finished product collecting vessel edge
Sliding rail slides into feeding plate end, and when cylinder is withdrawn, finished product collecting vessel is withdrawn, and the second impurity collecting vessel is located at feeding plate end
End.
4. a kind of recycling silicon material according to claim 1 or 2 or 3 selects device, it is characterised in that: first magnetic roller
Right side, which is located above the first impurity collecting vessel, is equipped with material scraping plate, and top is equipped with impurity collecting drum, institute on the right side of first magnetic roller
It is equipped with fixed magnetic system in the impurity collecting drum stated, the rotating device of driving impurity collecting drum rotation is equipped in the cabinet.
5. a kind of recycling silicon material according to claim 4 selects device, it is characterised in that: the power device includes dynamic
The central axis of force motor, speed reducer and the bearing being set on the first roller, the output shaft of the speed reducer and the first roller connects
It connects.
6. a kind of recycling silicon material according to claim 5 selects device, it is characterised in that: the rotating device includes setting
It is placed in the driven wheel in impurity collecting drum axle center, the speed reducer output shaft is equipped with driving wheel, the driving wheel and driven
Driving belt is equipped between wheel.
7. a kind of method of selecting for recycling silicon material as described in any claim in claim 1-6 and selecting device, including it is as follows
Step: 1) it, opens first magnetic roller so that first roller rotate counterclockwise into feed hopper pours into silicon material after crushing, silicon material
With the rotation of the first roller, the first roller slides to the left, and non-magnetic silicon material then falls into silicon material on the outside of the first roller and receives
Collect in bucket, magnetic impurity is then because the magnetic fields of the first magnetic system are adsorbed on the outside of the first roller;
2), the first roller is continued to rotate to when driving the impurity to turn to below the first magnetic system along the first roller, due to magnetic field strength
It reduces, the impurity of low magnetism is then fallen in the first impurity collecting vessel due to gravity, and the ferromagnetism impurity not fallen continues
It is adsorbed on the outside of the first roller;
3), the first roller turns to scraper Board position, then under the active force of material scraping plate, the strong magnetic impurity of bulky grain, which is scraped, to be fallen into
In first impurity collecting vessel;
4), above the first rollers roll to material scraping plate, only it is left the little particle impurity of some strong magnetic on the first roller, opens at this time
Electromagnet, impurity collecting drum form high-intensity magnetic field, will complete the in the little particle impurity absorption to impurity collecting drum on the first roller
Last impurity is collected on one roller;
5), on impurity collecting drum after adsorbing contaminant, close electromagnet, then it is remaining since the magnetic field on impurity collecting drum disappears
Impurity is fallen to automatically in the first impurity collecting vessel;
6), the recycling silicon material in silicon material collecting vessel slides to feeding plate, opens vibration motor, to silicon of the landing on feeding plate
Material carries out vibration blanking, opens strip electromagnet at this time, then under the magnetic fields of strip electromagnet, has magnetic miscellaneous
Matter is adsorbed on feeding plate bottom, and not magnetic silicon material then continues to slide to the finished product collecting vessel of feeding plate end;
7) after, completing finished product collection, switching device is opened, so that the end of feeding plate is switched to the second impurity collecting vessel, then
The power-off of strip electromagnet, in the case where lacking magnetic field, the impurity on feeding plate falls into second under the vibration of vibration motor
In impurity collecting vessel, the separation of all magnetic impurities and silicon material is so far completed.
In above step, step 2) 3), 4), 5) can be carried out with step 6), 7) simultaneously.
8. a kind of recycling silicon material method of selecting according to claim 7, it is characterised in that: the strip electromagnet exists
It is reciprocal to switch electromagnet polarity when impurity recycles, electromagnet power supply is then disconnected again.
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CN104069942A (en) * | 2013-03-27 | 2014-10-01 | 殷立志 | Roller screening device of fodder |
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CN206676423U (en) * | 2017-03-31 | 2017-11-28 | 邓干平 | One kind mining circulation iron removal by magnetic separation device |
CN207056773U (en) * | 2017-08-28 | 2018-03-02 | 晶科能源有限公司 | Magnetic metal removal device in silicon material |
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2018
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US3969226A (en) * | 1973-03-28 | 1976-07-13 | Berger Maschinenfabriken G.M.B.H. & Co. | Horizontal drum-type magnetic separator for granular feeds |
JPH11104514A (en) * | 1997-10-02 | 1999-04-20 | Hitachi Metals Techno Ltd | Drum type magnetic foreign matter recovering device |
JP2013244569A (en) * | 2012-05-28 | 2013-12-09 | J P C:Kk | Magnetic selective collection device and chip selective collection method |
CN104069942A (en) * | 2013-03-27 | 2014-10-01 | 殷立志 | Roller screening device of fodder |
CN105536983A (en) * | 2015-12-25 | 2016-05-04 | 重庆农正农业开发有限公司 | Method for removing impurities in cereals |
CN206676423U (en) * | 2017-03-31 | 2017-11-28 | 邓干平 | One kind mining circulation iron removal by magnetic separation device |
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