WO2016202473A1 - Siebplatte für siebanlagen zum mechanischen klassieren von polysilicium und verwenden dieser siebplatte - Google Patents
Siebplatte für siebanlagen zum mechanischen klassieren von polysilicium und verwenden dieser siebplatte Download PDFInfo
- Publication number
- WO2016202473A1 WO2016202473A1 PCT/EP2016/055538 EP2016055538W WO2016202473A1 WO 2016202473 A1 WO2016202473 A1 WO 2016202473A1 EP 2016055538 W EP2016055538 W EP 2016055538W WO 2016202473 A1 WO2016202473 A1 WO 2016202473A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polysilicon
- screen plate
- screen
- slots
- depressions
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
- B07B13/07—Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/12—Apparatus having only parallel elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
Definitions
- the invention relates to a sieve plate for screening systems for the mechanical classification of polysilicon.
- Polycrystalline silicon (polysilicon in short) serves as the starting material for
- Polycrystalline silicon is usually produced by means of the Siemens process.
- a bell-shaped reactor ("Siemens reactor") carrier body, usually thin filament rods made of silicon, by
- polycrystalline silicon deposits on the carrier bodies.
- the polysilicon granules are usually divided into two or more fractions or classes after preparation by means of a sieve system (classification).
- the smallest sieve fraction (Siebunterkorn) can then be processed in a grinding plant to seed particles and added to the reactor.
- the screening target fraction is usually packaged and transported to the customer.
- the customer uses the polysilicon granules to grow single crystals according to the Czochralski method.
- a screening machine is generally a machine for screening, ie the separation (separation) of solid mixtures to particle sizes.
- Planschwangsiebmaschinen occurs in litter screening machines in addition to the horizontal and a vertical screen acceleration.
- a special type is the Mehrdecksiebmaschine, which can fractionate several grain sizes simultaneously. They are designed for a multitude of sharp separations in the middle of the finest grain range.
- the drive principle is based on two-deck planer on two counter-rotating unbalance motors that produce a linear vibration.
- the screen material moves in a straight line over the horizontal separating surface. The machine works with low vibration acceleration.
- US 8021483 B2 discloses a device for sorting polycrystalline
- Step soil classifier attached to the vibration motor assembly.
- the Vibration motor arrangement ensures that the silicon pieces move over a first bottom containing grooves.
- dust is removed by a stream of air through a perforated plate.
- the pieces of silicon settle in holes of grooves or remain on ridges of the grooves. Fall at the end of the first floor
- US 2007/0235574 A1 discloses an apparatus for crushing and sorting polycrystalline silicon, comprising a polysilicon rough-cut feeder in a crusher, the crusher, and a polysilicon-collapse classifier, the apparatus being provided with a controller; which permits a variable adjustment of at least one crushing parameter in the crusher plant and / or at least one sorting parameter in the sorting plant.
- the sorting plant consists of a multi-stage mechanical screening plant and a multi-stage optoelectronic separation plant.
- US 2009/0120848 A1 also describes a device which enables a flexible classification of broken polycrystalline silicon, characterized in that it comprises a mechanical screening device and an optoelectronic sorting system, wherein the poly-fraction is transformed by the mechanical screening device into a silicon fines and a silicon Remaining part is separated and the silicon residue is separated via an optoelectronic sorting in further fractions.
- the mechanical screen is preferably a vibrating screen, which is driven by an unbalance motor.
- Siebbelag mesh and perforated sieves are preferred.
- US 2012/0198793 A1 discloses a method for dosing and packaging of
- Polysilicon fragments wherein a product stream of polysilicon fragments transported via a conveyor channel, separated by means of at least one sieve into coarse and fine fragments, weighed by means of a metering balance and to a target weight is metered, wherein the at least one sieve and the metering scale at their
- Surfaces at least partially comprise a hard metal.
- US 2014/0130455 A1 discloses in the context of a method for packaging polycrystalline silicon fragments that in a metering system fine fraction, ie very fine particles and chips of the polysilicon, is separated by means of a sieve.
- the sieve may be a perforated plate, a bar screen or optopneumatic sorting.
- the sieves used comprise on their surfaces at least partially a low-contamination material such.
- the screens may be partially or fully coated with a titanium nitride, titanium carbide, aluminum titanium nitride or DLC (Diamond Like Carbon) coating.
- Bar screens usually comprise parallel bars, the screen passage being determined by the spacing of the bars and the screen overflow at the free end of the bars.
- the known bar screens are the
- a sieve plate (1) for screening systems for the mechanical classification of polysilicon comprising a feed region (2) for polysilicon, a profiled region (3) with tips (32) and depressions (31), a region (4 ) with slots (41), wherein the slots (41) to the depressions (31)
- the object is also achieved by a method for mechanically classifying polysilicon with a screen, wherein the polysilicon is applied to a previously mentioned screen plate (1) which is vibrated in such a way that the polysilicon moves in the direction of the removal region (5). carries out, wherein small-particle polysilicon in the wells (31) of the screen plate (1) collects and through the slots (41) of the screen plate (1) falls and thereby from the discontinued
- the polysilicon may be polycrystalline fragments or
- Polysilicon granules act.
- Small-particle polysilicon is to be understood as meaning a subset of the discontinued amount of polysilicon which is to be separated off by means of the sieve system.
- the finely divided polysilicon thus corresponds to the fraction to be separated.
- the particulate polysilicon may be polycrystalline silicon particles to be separated from a target fraction comprising polysilicon granules or polysilicon fractions.
- the deposited polysilicon is polysilicon fines with fines.
- the fines should be separated with the sieve plate.
- the mesh size is defined here as 1 mm x 1 mm.
- the screen plate comprises a feed area in which the polysilicon is applied.
- the polysilicon is conveyed by means of a conveyor trough
- the screen plate also comprises a profiled area with grooves or grooves or generally depressions and projections, so that the profiled area depressions and peaks.
- the discontinued polysilicon comprises fragments of size classes 3 to 5 and fines as defined above. During the movement Polysilicon on the profiled area fines accumulate in the valleys of the profiled area.
- the charged polysilicon comprises fragments of size classes 0 to 2 and fines according to the above. Definition. During the movement of the polysilicon on the profiled area, the fine fraction contained in the polysilicon accumulates in the depressions of the profiled area.
- the screen plate comprises - following the profiled area - an area with slots.
- the slots are arranged in the conveying direction immediately behind the wells of the profiled area.
- the fines of the polysilicon located in the depressions of the profiled area are guided in a targeted manner to the slits of the area.
- the tips of the profiled area also extend into the area with slots, so that the entire screen plate is profiled, but the screen plate has at its rear end in the conveying direction slots instead of depressions. The separation of the fine fraction or small fragments / particles thus takes place via the slots of the sieve plate.
- Fragments / particles received by a arranged below the slots of the screen plate collecting container are received by a arranged below the slots of the screen plate collecting container.
- Removal area led.
- the removal area is connected to a conveyor trough, over which the larger fragments are removed.
- another screen plate can then be used to separate another fraction from the polysilicon.
- the slots widen in the conveying direction. Surprisingly, thereby clogging of the openings / slots can be effectively avoided. Thus, the associated problems encountered in the prior art that involve a great deal of effort do not occur.
- the separation accuracy is significantly higher than bar screens, which significantly less false grain is separated and thus increases the yield.
- the invention thus provides a screen plate, which can be used in all types of screening, in which in the first region of the screen plate of
- the screen plate is made of one or more materials selected from the group consisting of plastic, ceramic, glass, diamond, amorphous carbon, silicon or metal.
- the screen plate is lined or coated with one or more materials selected from the group consisting of plastic, polyurethane, ceramic, glass, diamond, amorphous carbon, and silicon.
- the polysilicon-contacting portions of the mesh plate are amorphous with one or more materials selected from the group consisting of plastic, polyurethane, ceramic, glass, diamond
- the screen plate is made of hard metal or is coated or lined with a hard metal.
- the screen plate comprises a metallic base body and a coating or lining of one or more materials selected from the group consisting of plastic, ceramics, glass, diamond, amorphous carbon and silicon.
- Types of plastic used selected from the group consisting of PVC (polyvinyl chloride), PP (polypropylene), PE (polyethylene), PU (polyurethane), PFA (perfluoroalkoxy), PVDF (polyvinylidene fluoride) and PTFE (polytetrafluoroethylene).
- PVC polyvinyl chloride
- PP polypropylene
- PE polyethylene
- PU polyurethane
- PFA perfluoroalkoxy
- PVDF polyvinylidene fluoride
- PTFE polytetrafluoroethylene
- the screen plate comprises a coating of titanium nitride, titanium carbide, aluminum titanium nitride or DLC (Diamond Like Carbon).
- the size of the slots depends on the fraction to be separated and can be up to 200 mm.
- a separation step at 10 mm is to take place (screening of polysilicon smaller than 10 mm), wherein the slots at their end (beginning of the removal region) have a width of 10 mm.
- the design of the profiled area of the sieve plate depends on the fraction to be separated.
- the depth and angle of the depressions of the profiled area are to be designed in such a way that the fraction to be separated, e.g. the fine fraction collects there.
- the angles of the depressions can be flat to extremely sharp and be greater than 1 ° and less than 80 °.
- the depth of the sinks can be from 1 to 200 mm.
- an angle of 45 ° and a depth of 20 mm are suitable for the separation of a 10 mm fraction.
- the excitation of the screen plate can be both with a plan vibration or
- vibratory drives such as e.g.
- Magnetic drives or unbalance drives can be provided.
- the screen plate is inclined to the horizontal.
- Tilt angles of 0-90 ° are possible.
- Fig. 1 shows the schematic structure of a screen plate.
- the screen plate 1 comprises a task area 2, in which the polysilicon
- the polysilicon can be conveyed for example by means of a conveyor trough to the screen and delivered to the feed area 2 of the screen plate 1.
- the screen plate 1 also comprises a profiled area 3.
- This profiled area 3 provides grooves or grooves or depressions of a different kind, so that the profiled area 3 has depressions 31 and tips 32.
- the fine fraction contained in the polysilicon accumulates during the movement of the polysilicon on the profiled area 3 in the depressions 31 of the profiled area 3.
- the screen plate 1 comprises - following the profiled area 3 - a region 4 with slots 41.
- the slots 41 are arranged directly behind (in the conveying direction) the depressions 31 of the profiled area 3.
- the fines of the polysilicon located in the depressions 31 of the profiled area 3 are guided in a targeted manner to the slots 41 of the area 4.
- the tips 32 of the profiled region 3 preferably also continue in the region 4, so that the entire sieve plate 1 is profiled, but in the region 4 instead of depressions 31 has slots 41.
- the separation of the fine fraction thus takes place via the slots 41 of the sieve plate 1.
- the separated fines can be taken up, for example, by a collecting container arranged below the slots 41 of the sieve plate 1.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201680035849.XA CN107771105B (zh) | 2015-06-19 | 2016-03-15 | 用于多晶硅的机械分类的筛选设备的筛板 |
SG11201710116QA SG11201710116QA (en) | 2015-06-19 | 2016-03-15 | Screen Plate For Screening Plants For Mechanical Classification Of Polysilicon |
KR1020187001109A KR20180030524A (ko) | 2015-06-19 | 2016-03-15 | 폴리실리콘을 기계적으로 분류하기 위한 선별 플랜트용 스크린 플레이트 |
MYPI2017001665A MY189236A (en) | 2015-06-19 | 2016-03-15 | Screen plate for screening plants for mechanical classification of polysilicon |
EP16711200.2A EP3310499B1 (de) | 2015-06-19 | 2016-03-15 | Verfahren zum mechanischen klassieren von polysilicium |
US15/737,728 US11059072B2 (en) | 2015-06-19 | 2016-03-15 | Screen plate for screening plants for mechanical classification of polysilicon |
JP2017565733A JP6851994B2 (ja) | 2015-06-19 | 2016-03-15 | ポリシリコンを機械的に分級するためのふるい機用のスクリーン板およびスクリーン板の使用 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015211351.5A DE102015211351A1 (de) | 2015-06-19 | 2015-06-19 | Siebplatte für Siebanlagen zum mechanischen Klassieren von Polysilicium |
DE102015211351.5 | 2015-06-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016202473A1 true WO2016202473A1 (de) | 2016-12-22 |
Family
ID=55588236
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/055538 WO2016202473A1 (de) | 2015-06-19 | 2016-03-15 | Siebplatte für siebanlagen zum mechanischen klassieren von polysilicium und verwenden dieser siebplatte |
Country Status (10)
Country | Link |
---|---|
US (1) | US11059072B2 (de) |
EP (1) | EP3310499B1 (de) |
JP (1) | JP6851994B2 (de) |
KR (1) | KR20180030524A (de) |
CN (1) | CN107771105B (de) |
DE (1) | DE102015211351A1 (de) |
MY (1) | MY189236A (de) |
SG (2) | SG11201710116QA (de) |
TW (1) | TWI600473B (de) |
WO (1) | WO2016202473A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3643527A1 (de) | 2018-10-25 | 2020-04-29 | Continental Reifen Deutschland GmbH | Fahrzeugluftreifen |
WO2022042815A1 (de) | 2020-08-24 | 2022-03-03 | Wacker Chemie Ag | Siebplatte für eine trennvorrichtung zum klassieren von schüttgut |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016225248A1 (de) | 2016-12-16 | 2018-06-21 | Siltronic Ag | Abscheidevorrichtung für Polysilicium |
US11833546B2 (en) | 2018-02-20 | 2023-12-05 | Style Ehf. | In-feeding and rinsing device for grading systems |
WO2020180315A1 (en) * | 2019-03-06 | 2020-09-10 | Halliburton Energy Services, Inc. | Coated shaker screen wire for use in oil and gas operations |
CN113897682B (zh) * | 2021-10-29 | 2024-02-20 | 大连弘源矿业有限公司 | 一种多晶硅洗选加工设备 |
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US4569446A (en) * | 1982-10-29 | 1986-02-11 | Kelley-Perry, Incorporated | Method and apparatus for feeding a product including fines |
DE19822996C1 (de) * | 1998-05-22 | 1999-04-22 | Siemens Ag | Abscheidevorrichtung für langgestreckte Feststoffteile |
DE19945037A1 (de) * | 1999-09-20 | 2001-03-29 | Hubertus Exner | Vorrichtung zum Ausrichten und gegebenenfalls Sortieren von länglichen Partikeln |
DE60310627T2 (de) * | 2002-02-20 | 2007-10-11 | Hemlock Semiconductor Corp., Hemlock | Fliessfähige Späne, Verfahren und Vorrichtung zu ihrer Herstellung und ihrer Anwendung |
US20070235574A1 (en) | 2006-04-06 | 2007-10-11 | Wacker Chemie Ag | Method and Device For Comminuting and Sorting Polysilicon |
US20090120848A1 (en) | 2006-04-06 | 2009-05-14 | Wacker Chemie Ag | Device and method for the flexible classification of polycrystalline silicon fragments |
US20120198793A1 (en) | 2011-02-09 | 2012-08-09 | Wacker Chemie Ag | Method and device for dosing and packaging polysilicon chunks and dosing and packaging unit |
US20140130455A1 (en) | 2012-11-09 | 2014-05-15 | Wacker Chemie Ag | Packaging of polycrystalline silicon |
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-
2015
- 2015-06-19 DE DE102015211351.5A patent/DE102015211351A1/de not_active Withdrawn
-
2016
- 2016-03-15 SG SG11201710116QA patent/SG11201710116QA/en unknown
- 2016-03-15 KR KR1020187001109A patent/KR20180030524A/ko active Search and Examination
- 2016-03-15 US US15/737,728 patent/US11059072B2/en active Active
- 2016-03-15 EP EP16711200.2A patent/EP3310499B1/de active Active
- 2016-03-15 SG SG10201911360RA patent/SG10201911360RA/en unknown
- 2016-03-15 JP JP2017565733A patent/JP6851994B2/ja active Active
- 2016-03-15 WO PCT/EP2016/055538 patent/WO2016202473A1/de active Application Filing
- 2016-03-15 CN CN201680035849.XA patent/CN107771105B/zh active Active
- 2016-03-15 MY MYPI2017001665A patent/MY189236A/en unknown
- 2016-06-08 TW TW105118169A patent/TWI600473B/zh active
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US4569446A (en) * | 1982-10-29 | 1986-02-11 | Kelley-Perry, Incorporated | Method and apparatus for feeding a product including fines |
DE19822996C1 (de) * | 1998-05-22 | 1999-04-22 | Siemens Ag | Abscheidevorrichtung für langgestreckte Feststoffteile |
DE19945037A1 (de) * | 1999-09-20 | 2001-03-29 | Hubertus Exner | Vorrichtung zum Ausrichten und gegebenenfalls Sortieren von länglichen Partikeln |
DE60310627T2 (de) * | 2002-02-20 | 2007-10-11 | Hemlock Semiconductor Corp., Hemlock | Fliessfähige Späne, Verfahren und Vorrichtung zu ihrer Herstellung und ihrer Anwendung |
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US20070235574A1 (en) | 2006-04-06 | 2007-10-11 | Wacker Chemie Ag | Method and Device For Comminuting and Sorting Polysilicon |
US20090120848A1 (en) | 2006-04-06 | 2009-05-14 | Wacker Chemie Ag | Device and method for the flexible classification of polycrystalline silicon fragments |
US20120198793A1 (en) | 2011-02-09 | 2012-08-09 | Wacker Chemie Ag | Method and device for dosing and packaging polysilicon chunks and dosing and packaging unit |
US20140130455A1 (en) | 2012-11-09 | 2014-05-15 | Wacker Chemie Ag | Packaging of polycrystalline silicon |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3643527A1 (de) | 2018-10-25 | 2020-04-29 | Continental Reifen Deutschland GmbH | Fahrzeugluftreifen |
DE102018218252A1 (de) | 2018-10-25 | 2020-04-30 | Continental Reifen Deutschland Gmbh | Fahrzeugluftreifen |
WO2022042815A1 (de) | 2020-08-24 | 2022-03-03 | Wacker Chemie Ag | Siebplatte für eine trennvorrichtung zum klassieren von schüttgut |
US11904361B2 (en) | 2020-08-24 | 2024-02-20 | Wacker Chemie Ag | Screen plate for a separating device for classifying bulk material |
Also Published As
Publication number | Publication date |
---|---|
JP2018524163A (ja) | 2018-08-30 |
CN107771105A (zh) | 2018-03-06 |
DE102015211351A1 (de) | 2016-12-22 |
EP3310499B1 (de) | 2020-11-25 |
US11059072B2 (en) | 2021-07-13 |
JP6851994B2 (ja) | 2021-03-31 |
SG11201710116QA (en) | 2018-01-30 |
EP3310499A1 (de) | 2018-04-25 |
TW201700186A (zh) | 2017-01-01 |
MY189236A (en) | 2022-01-31 |
CN107771105B (zh) | 2021-12-31 |
TWI600473B (zh) | 2017-10-01 |
SG10201911360RA (en) | 2020-02-27 |
KR20180030524A (ko) | 2018-03-23 |
US20180185882A1 (en) | 2018-07-05 |
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