EP3122463A1 - Verfahren zum fragmentieren eines stangenartigen materials, insbesondere aus polykristallinem silizium - Google Patents
Verfahren zum fragmentieren eines stangenartigen materials, insbesondere aus polykristallinem siliziumInfo
- Publication number
- EP3122463A1 EP3122463A1 EP14717391.8A EP14717391A EP3122463A1 EP 3122463 A1 EP3122463 A1 EP 3122463A1 EP 14717391 A EP14717391 A EP 14717391A EP 3122463 A1 EP3122463 A1 EP 3122463A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rod
- electrodes
- high voltage
- electrode assembly
- process fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 182
- 238000000034 method Methods 0.000 title claims abstract description 108
- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 claims abstract description 41
- 230000015556 catabolic process Effects 0.000 claims abstract description 30
- 230000033001 locomotion Effects 0.000 claims abstract description 23
- 239000004065 semiconductor Substances 0.000 claims abstract description 6
- 238000013467 fragmentation Methods 0.000 claims description 21
- 238000006062 fragmentation reaction Methods 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 11
- 239000012634 fragment Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000011109 contamination Methods 0.000 abstract description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 21
- 229910052710 silicon Inorganic materials 0.000 description 21
- 239000010703 silicon Substances 0.000 description 21
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
- B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
- B02C2019/183—Crushing by discharge of high electrical energy
Definitions
- the invention relates to a method for
- Linen for the production of high-purity polysilicon as a base material for the crystal growth of polycrystalline or monocrystalline substrates for solar ⁇ or electronics industry is mainly used the Siemens method. This process produces polycrystalline silicon rods with thicknesses in the range between 100 mm and 150 mm, which must be broken into small pieces for use in the crystal furnaces.
- the pieces should preferably have a size between 10 mm and 30 mm, not smaller than 2 mm may be and also should not be needle-shaped, as this has a negative effect on the flow properties. Due to the special crystalline structure of silicon breaking of silicon rods into such a fraction with the largest possible uniform size and shape is very difficult.
- Base material should not be contaminated when breaking by contact with foreign material. Contamination of the material with foreign substances, especially metals, is critical and should be below 5 ppb, better still below 2 ppb. From the prior art are various
- a first aspect of the invention relates to a method for fragmenting a rod-like material, preferably a Halbleitermate ⁇ rials, such as polycrystalline silicon.
- an electrode assembly having two or more electrodes is arranged such in the area of in a process fluid, preferably water, immersed From ⁇ section of the to be fragmented rod-like material, that the electrodes are immersed, a ⁇ into the process fluid and both a distance from each other and each have to the rod-like material.
- a process fluid preferably water
- These distances are such selected that high voltage breakdowns through the rod-like material and / by application of the electrode assembly with high voltage pulses in the range ⁇ these electrodes - may be generated or along the surface of the rod-like material.
- the size of these distances depends on the conductivity of the process fluid, on the conductivity ability of the rod-like material and from the height of the high voltage pulses. Suitable spacing can be determined by the skilled artisan for the particular operating situation by simp ⁇ ches Try.
- the electrode arrangement is subjected to high-voltage pulses, so that high-voltage breakdowns occur through the rod-like material and / or along the surface of the rod-like material in the region of the electrodes.
- high-voltage pulses so that high-voltage breakdowns occur through the rod-like material and / or along the surface of the rod-like material in the region of the electrodes.
- a relative movement in the longitudinal direction of the rod-like material between the electrode assembly and the rod-like material is generated, whereby the location of the high voltage breakdowns by the rod-like material and / or along the surface of the rod-like material changes progressively in the longitudinal direction of the rod-like material.
- the rod-like material is completely immersed in the process fluid during fragmentation. It advantageously has a substantially horizontal position.
- rod-like material is taken during fragmentation in an upwardly open trough or dish-like container and the fragments resulting from its fragmentation are collected in this container and transported away after complete fragmentation with this container become.
- the rod-like material when fragmented, is immersed in the process fluid with one end and preferably has an oblique position in which the lower end of the rod-like material is immersed in the process fluid.
- the method can be realized in a simple way, in quasi-continuous de-operation with continuous delivery of stangenarti ⁇ gem material into the flooded with process fluid fragmentation zone.
- the relative movement between the electrode assembly and the rod-like material is generated at least in part by displacing the rod-like material in its longitudinal direction.
- the elec ⁇ trodenan Aunt is displaced in the longitudinal direction of the rod-like Mate ⁇ rials.
- one or the other variant or a combination of the two variants may be particularly preferred.
- the electrode assembly is displaced along with egg ⁇ nem the high voltage pulse generating high voltage generator in the longitudinal direction of the rod-like material. This can be dispensed with a complex movable coupling of the electrode assembly to the high ⁇ voltage generator .
- rod-like material when fragmenting an oblique or preferably horizontal position and the electrodes of the electrode assembly are arranged above the rod-like material, with advantage substantially centered with respect to the Longitudinal axis of the rod-like material, so a particularly uniform fragmentation result can be achieved.
- the electrodes of the electrode assembly are preferably arranged such that the distance of the respective electrode to the surface of the rod-like material is in each case in the range of 2 mm to 40 mm and the distance between the electrodes in the range between 40 mm and 100 mm. Distances in these areas have proven to be particularly suitable.
- the electrode arrangement is preferably subjected to high-voltage pulses in the range between 100 KV and 300 KV, in particular in the range between 150 KV and 200 KV.
- the high voltage pulses preferably have a power per pulse between 300 joules and 1000 joules, in particular between 500 joules and 750 joules.
- the application of the high-voltage pulses to the electrode arrangement for generating the high-voltage breakdowns through the rod-like material and / or along the surface of the rod-like material preferably takes place at pulse frequencies in the range between 0.5 Hz and 40 Hz, in particular in the range between 1 Hz and 5 Hz.
- the relative movement between the electrode arrangement and the rod-like material and / or the charging of the electrode arrangement with high-voltage pulses preferably takes place in such a way that the electrode arrangement is subjected to 0.5 to 1.0 pulses per millimeter of relative movement, in particular 0.1 to 2.0 pulses.
- Such pulse frequencies and pulse impulses per millimeter relative movement have proven to be particularly suitable.
- the area between the electrodes of the electrode assembly and the rod-like material which is flooded with process fluid is preferably purged with process liquid. In this way, fine material can be removed from the process zone and a consistent quality of vorhande in the process zone ⁇ nen process fluid to be ensured, which is conducive to stable len litigation.
- the at least two electrodes of the electrode arrangement for generating the high-voltage breakdowns by the rod-like material and / or along the surface of the rod-like material are simultaneously exposed to pulses with different potentials not equal to the ground potential.
- one or the other variants may be more preferred.
- a second aspect of the invention relates to a plant for carrying out the process according to the first aspect of the invention.
- the plant comprises a process space, which can be filled with a process fluid, preferably water, and in which the rod-like material or a portion thereof can be arranged such that the rod-like material or the portion of the rod-like material with Process fluid filled process space surrounded by process fluid is.
- the system comprises an electrode arrangement with at least two electrodes, which are arranged in the region of the bar-like material or portion of the bar-like material in process space filled with process fluid and intended to receive the rod-like material or the portion of rod-like material for the intended operation can be that the electrodes are immersed in the process fluid, while a distance from each other and each at a distance to the
- rod-like material which distances make it possible to produce high-voltage breakdowns by the rod-like material and / or along the surface of the rod-like material in normal operation by applying the high-voltage pulses to the electrode assembly in the region of these electrodes.
- the system further comprises means for applying high voltage pulses to the electrode assembly to generate the high voltage breakdowns through the rod-like material and / or along the surface of the rod-like material, and means for generating relative longitudinal movement of the rod-like material between the electrode assembly and the rod-like material during generating the high tensioning ⁇ voltage punches during its intended operation, such that the location of the high voltage breakdowns is progressively changed in the longitudinal direction of this material by the rod-like material and / or along the surface of the rod-like material, the rod each material is surrounded by process fluid at this location and the electrodes are immersed in the process fluid at that location.
- the method according to the first aspect of the invention can be carried out in a simple manner.
- the system comprises a device for receiving the rod-like material, preferably an upwardly open trough or dish-like container for receiving the rod-like material.
- a device for receiving the rod-like material preferably an upwardly open trough or dish-like container for receiving the rod-like material.
- the rod-like material can be kept completely surrounded by process liquid in the intended operation in the process chamber, preferably in a horizontal position.
- the system is preferably designed such that this tray-like or dish-like container can be removed from the system after the intended fragmentation operation together with the fragments of the rod-like material contained therein, which fragments have emerged from the fragmentation.
- the system comprises a device for receiving the rod-like material, with which the rod-like can be held such that it is immersed in the process space with one end in the process fluid, in particular such that it has an inclined position and its lower end is immersed in the process fluid in the process space.
- a quasi-continuous installation can be realized in a simple manner in which rod-like material is continuously fed, in particular under gravity, into the fragmentation zone flooded with process fluid and fragmented therein.
- the means for generating a relative movement between the electrode assembly and the rod-like material are formed in a preferred embodiment of the system for displacement of the rod-like material along its longitudinal axis.
- these means are designed for displacement of the electrode arrangement along the longitudinal axis of the rod.
- one or the other variant or a combination of the two variants may be particularly preferred.
- the means for energizing the electrode assembly comprising high voltage pulses a high voltage ⁇ pulse generator and the means for generating a relative movement between the electrode assembly and the rod-like material are formed for the displacement of the electrode assembly along with the high voltage pulse generator along the longitudinal axis of the rod-like material. This can be dispensed with a complex movable coupling of the electrode assembly to the high voltage generator.
- the system is designed such that the at least two electrodes of the Elek ⁇ trodenan extract can be arranged as intended above the rod-like material, advantageously substantially centered with respect to the longitudinal axis of the rod-like material.
- the at least two electrodes of the Elek ⁇ trodenan extract can be arranged as intended above the rod-like material, advantageously substantially centered with respect to the longitudinal axis of the rod-like material.
- the electrodes of the electrode arrangement can advantageously be arranged in such a way that the distance between the electrodes and the surface of the rod-like material is in the range from 2 mm to 40 mm and the distance between the electrodes is in the range between 40 mm and 100 mm. Such distances have proven to be particularly suitable. It is further preferred that the plant has to the particular automated setting of the respective spacing of the electrodes to the rod-like material, with ⁇ tel preferably to the respective distance setting during the intended operation of the plant.
- the means for applying pressure to the electrodes ⁇ arrangement with high-voltage pulses are with advantage be ⁇ forms for charging the electrode assembly with high voltage pulses in the range between 100 kV and 300 kV, in particular in the range of 150 KV and 200 KV, with a power per pulse in the range between 300 Joule and 1000 Joule, in particular between 500 Joule and 750 Joule and with a pulse frequency in the range between 0.5 Hz and 40 Hz, in particular between 1 Hz and 5 Hz.
- the means for generating a relative movement in the longitudinal direction of the rod-like material between the electrode assembly and the rod-like material or the means for loading ⁇ aufschlagung of the electrode assembly are formed such with high-voltage ⁇ pulses that in Fragmentier ⁇ ungs sunny the electrode assembly per Millimeter Rela ⁇ tivrise with 0.5 to 1.0 pulses, in particular with 0.1 to 2.0 pulses can be applied.
- Such pulse ⁇ rates per mm relative motion have proven to be particularly suitable ⁇ ge.
- the system comprises means for purging the area between the electrodes of the electrode arrangement and the rod-like material with process fluid during the fragmentation operation.
- Such agents include, for example, one or more feed nozzles, can be injected via wel ⁇ che fresh or recycled process liquid into the area between the electrodes and the rod-like material. This will allow To remove fine particles from this area and to keep the electrical conductivity of the process fluid in this area constant, which promotes stable process management.
- Potential is, especially at ground potential.
- the at least two electrodes of the electrode arrangement for generating the high-voltage breakdowns by the rod-like material and / or along the surface of the rod-like material can be acted on simultaneously with pulses having a different potential than the ground potential.
- High voltage pulse generator may be the one or the other imple mentation form.
- the Inventions according to plant has a plant control, with- means of which, preferably during the Fragmentier ⁇ ungs vulgar, the energy of the high voltage pulses, the frequency of the high voltage pulses, the relative speed between the electrode assembly and the rod-like material, the distance between the electrodes and the rod-like material and / or certain plant parameters , preferably automated, adjusted and / or controllable, with advantage as a function of plant and / or process parameters determined during normal operation.
- a third aspect of the invention relates to
- FIG. 1 shows a part of a plant according to the invention for fragmenting polycrystalline silicon rods 1 according to the method according to the first aspect of the invention, in a section transverse to the longitudinal direction of a silicon rod 1 to be fragmented.
- the system has a basin 9 extending in the longitudinal direction of the silicon rod 1, which forms a process space 8 according to the claims, which is filled with a process fluid 2, in the present case water 2.
- Polyurethane mat 10 are formed, which is supported on a base 11 made of PE, is to be fragmented silicon rod 1. It has a horizontal position and is completely surrounded by process fluid 2.
- the trough-like container 7 is formed and stored in the process chamber 8 that it can be removed from the process chamber 8 after complete fragmentation of the silicon rod 1 together with the resulting fragments of the Sliziumstange 1, which are then arranged as loose aterial hereung therein.
- the system comprises an electrode arrangement 4 with two electrodes 5, 6, which are arranged substantially centered with respect to the longitudinal axis of the silicon rod 1 above the same.
- the two electrodes 5, 6 are immersed in the process fluid 2 and the left electrode 5 is in the fragmentation of a likewise belonging to the system high voltage pulse generator (not shown) with high voltage pulses applied while the right electrode 6 is grounded.
- the two electrodes 5, 6 have mutually a substantially greater distance than each compared to the silicon ⁇ rod 1. These distances are so selected that when acted on the left electrode by the high voltage pulse generator with high-voltage pulses in the range of these electrodes 5, 6 high voltage breakdowns by the 5 Silicon rod 1 and / or generated along the surface of the silicon rod 1, which lead to the fragmentation of the silicon rod 1.
- the diameter of the silicon rod 1 is about 120 mm, its length is about 2 m.
- the distances between the electrodes 5, 6 to the surface of the silicon rod 1 are about 8 mm.
- the distance between the electrodes 5, 6 to each other is about 60 mm.
- the high-voltage pulses that can be generated by the high-voltage pulse generator have a voltage of approximately 200 KV and are generated at a pulse frequency of 5 Hz.
- the power per pulse is about 700 joules.
- the electrode arrangement 4 when generating the high-voltage breakdowns together with the high-voltage pulse generator, the electrode arrangement 4 is movable along a sliding carriage (not shown) in the longitudinal direction of the silicon rod 1, so that the location of the
- the system also includes a system control, by means of which the distance between the electrodes 5, 6 and the silicon rod 1 and the travel speed of the electrode assembly 4 can be adjusted during the fragmentation operation.
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2014/000039 WO2015143572A1 (de) | 2014-03-26 | 2014-03-26 | Verfahren zum fragmentieren eines stangenartigen materials, insbesondere aus polykristallinem silizium |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3122463A1 true EP3122463A1 (de) | 2017-02-01 |
EP3122463B1 EP3122463B1 (de) | 2018-06-27 |
Family
ID=50486685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14717391.8A Active EP3122463B1 (de) | 2014-03-26 | 2014-03-26 | Verfahren zum fragmentieren eines stangenartigen materials, insbesondere aus polykristallinem silizium |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3122463B1 (de) |
JP (1) | JP6403795B2 (de) |
KR (1) | KR20160137539A (de) |
CN (1) | CN106132550B (de) |
CA (1) | CA2943892C (de) |
TW (1) | TWI652383B (de) |
WO (1) | WO2015143572A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3581544A1 (de) * | 2018-06-12 | 2019-12-18 | Sumco Corporation | Verfahren und vorrichtung zur zerkleinerung von siliciumstäben sowie verfahren zur herstellung von siliciumklumpen |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3354622A1 (de) * | 2017-01-26 | 2018-08-01 | Omya International AG | Prozess zur herstellung von fragmentiertem natürlichen calciumcarbonat mit reduziertem gehalt an verunreinigungen sowie die hierbei erhaltenen produkte |
CN107350056B (zh) * | 2017-08-24 | 2018-04-24 | 华中科技大学 | 一种用于流水作业的高压电脉冲破碎反应槽 |
TWI802721B (zh) * | 2018-07-04 | 2023-05-21 | 日商三菱綜合材料股份有限公司 | 半導體原料之破碎方法或裂痕產生方法及半導體原料塊之製造方法 |
CN110215984B (zh) * | 2019-07-05 | 2021-04-13 | 东北大学 | 一种强化方铅矿破碎及分选的高压电脉冲预处理方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU554866B2 (en) * | 1982-05-21 | 1986-09-04 | De Beers Industrial Diamond Division (Proprietary) Limited | High voltage disintegration |
CN86104470A (zh) * | 1986-06-27 | 1988-01-06 | Ceee公司 | 脉冲电能发射分裂物质的方法和设备 |
DE19534232C2 (de) * | 1995-09-15 | 1998-01-29 | Karlsruhe Forschzent | Verfahren zur Zerkleinerung und Zertrümmerung von aus nichtmetallischen oder teilweise metallischen Bestandteilen konglomerierten Festkörpern und zur Zerkleinerung homogener nichtmetallischer Festkörper |
DE19543914C1 (de) * | 1995-11-27 | 1997-01-02 | Marcon Immobilien Gmbh | Verfahren und Vorrichtung zur Bearbeitung von Feststoffen |
JPH09192526A (ja) * | 1996-01-12 | 1997-07-29 | Kobe Steel Ltd | 放電破砕装置 |
DE19727441A1 (de) * | 1997-06-27 | 1999-01-07 | Wacker Chemie Gmbh | Vorrichtung und Verfahren zum Zerkleinern von Halbleitermaterial |
DE19727534C2 (de) * | 1997-06-28 | 2002-06-06 | Tzn Forschung & Entwicklung | Verfahren und Vorrichtung zum Reinigen von mineralischen Feststoffen, insbesondere von Kies und Sand |
DE19736027C2 (de) * | 1997-08-20 | 2000-11-02 | Tzn Forschung & Entwicklung | Verfahren und Vorrichtung zum Aufschluß von Beton, insbesondere von Stahlbetonplatten |
-
2014
- 2014-03-26 EP EP14717391.8A patent/EP3122463B1/de active Active
- 2014-03-26 KR KR1020167025960A patent/KR20160137539A/ko not_active Application Discontinuation
- 2014-03-26 CA CA2943892A patent/CA2943892C/en active Active
- 2014-03-26 CN CN201480077501.8A patent/CN106132550B/zh active Active
- 2014-03-26 WO PCT/CH2014/000039 patent/WO2015143572A1/de active Application Filing
- 2014-03-26 JP JP2016559172A patent/JP6403795B2/ja active Active
- 2014-12-03 TW TW103142023A patent/TWI652383B/zh active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3581544A1 (de) * | 2018-06-12 | 2019-12-18 | Sumco Corporation | Verfahren und vorrichtung zur zerkleinerung von siliciumstäben sowie verfahren zur herstellung von siliciumklumpen |
US11273451B2 (en) | 2018-06-12 | 2022-03-15 | Sumco Corporation | Silicon rod crushing method and apparatus, and method of producing silicon lumps |
Also Published As
Publication number | Publication date |
---|---|
TWI652383B (zh) | 2019-03-01 |
EP3122463B1 (de) | 2018-06-27 |
JP2017515774A (ja) | 2017-06-15 |
CA2943892C (en) | 2021-11-09 |
CA2943892A1 (en) | 2015-10-01 |
KR20160137539A (ko) | 2016-11-30 |
CN106132550A (zh) | 2016-11-16 |
TW201538813A (zh) | 2015-10-16 |
CN106132550B (zh) | 2020-02-21 |
WO2015143572A1 (de) | 2015-10-01 |
JP6403795B2 (ja) | 2018-10-10 |
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