CN114405394B - Granulating device and granulating method for discharging molten silicon - Google Patents
Granulating device and granulating method for discharging molten silicon Download PDFInfo
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- CN114405394B CN114405394B CN202210135315.1A CN202210135315A CN114405394B CN 114405394 B CN114405394 B CN 114405394B CN 202210135315 A CN202210135315 A CN 202210135315A CN 114405394 B CN114405394 B CN 114405394B
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- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/02—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops
- B01J2/04—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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Abstract
The invention provides a granulating device for discharging molten silicon and a granulating method thereof, wherein the granulating device comprises a shell, the top of the shell is provided with a feed inlet, one end of the inside of the shell, which corresponds to the feed inlet, is provided with a distribution device, two sides of the shell, which are close to the distribution device, are respectively provided with a medium port and a recovery port I, cooling parts are symmetrically arranged below the medium port and the recovery port I inside the shell, the bottom of the shell is provided with a discharge port, the discharge port is externally connected with a screening device, and the screening device is provided with a recovery port II. According to the granulating device, the step of crushing a metal structure in the traditional process is omitted by mutually matching the distribution device, the cooling part and the screening device, the risk of mixing other metal elements is eliminated, and silicon granules prepared from molten silicon liquid have higher purity, are simple in structure and convenient to adjust, and are suitable for popularization.
Description
Technical Field
The invention belongs to the technical field of molten silicon granulation, and relates to a granulation device for molten silicon discharge and a granulation method thereof.
Background
The properties of industrial silicon are similar to those of germanium, lead and tin, and the industrial silicon has semiconductor properties. Silicon is very abundant in the earth's crust, second only to oxygen, and accounts for more than a quarter of the total weight of the crust, and exists in the form of silica or silicates. The industrial silicon has wide application field, and is mainly used for producing organic silicon raw materials, additives of non-ferrous alloy, high-purity semiconductor materials and the like. In the industrial production process of high-purity silicon, high-temperature molten silicon is cooled, crushed and granulated, and the purity is ensured at the same time. The common process method is that the silicon is directly cooled and then crushed by a hammer crusher, but the hammer head of the hammer crusher is directly contacted with the silicon block, and metal substances of the silicon block can be mixed into the silicon block, so that the purity of the silicon is reduced, and the price of a finished product is greatly reduced.
CN110860333A discloses an industrial silicon granulation device and a granulation method thereof in the technical field of industrial silicon granulation, the industrial silicon granulation device comprises a support frame, and the granulation method of the industrial silicon granulation device comprises the following steps: crushing and granulating; screening; grinding; the device is through setting up electromagnetic vibration batcher in feed inlet department, can realize quantitative reinforced on the one hand, on the other hand can make the continuous even entering of raw materials smash the incasement, avoided the phenomenon that the feeding is neglected, make the industrial silicon granule size of smashing after the granulation comparatively even, smash the internal sieve that is equipped with of box, the vibration that produces when smashing industrial silicon through smashing the case drives the sieve vibration and can directly separate industrial silicon middlings and industrial silicon granule, further grind industrial silicon middlings into fine powder after the separation, so as to be used for other occasions, economic benefits has been improved, the support frame bottom is equipped with the shock absorber, certain damping vibration isolation effect has.
CN211436965U discloses a silicon material prilling granulator for silicon production, and its structure includes the frame, and the slope is equipped with the granulation disc in the frame, and its innovation point lies in: its structure still includes screen assembly, the granulation disc is equipped with the discharge gate, be equipped with the solenoid valve on the discharge gate, screen assembly is located the below of granulation disc, above-mentioned screen assembly includes the base, vibration unit and a plurality of layers of sieve, the vibration unit vibration sets up on the base, a plurality of sieve from the top down successive layer slope in proper order and the setting that is parallel to each other are on vibration unit, the incline direction of sieve and the incline direction of granulation disc are unanimous, evenly distributed has the filtration pore on the sieve, the aperture from the top down of every layer of filtration pore reduces in proper order, every layer of sieve is equipped with the collecting box, the utility model discloses a categorised collection after the silicon material granulation has been realized, the homogeneity of collecting silicon material particle size has been guaranteed, make things convenient for the follow-up silicon material to different particle sizes to carry out categorised drying process simultaneously, the drying efficiency of follow-up silicon material granule has been improved.
CN208275362U discloses an inorganic silicon granulating device, which comprises a material groove, wherein a stirring device is arranged in the material groove, a material liquid spray nozzle is arranged above an opening of the material groove, and a cooling jacket is arranged outside the groove body of the material groove; the stirring device comprises a plurality of rotating shafts which are arranged in parallel, a first stirring mechanism and a second stirring mechanism are arranged on the rotating shafts along the axial direction, the first stirring mechanism comprises a rotating disc arranged on the rotating shafts, and a plurality of stirring blades are arranged on the rotating disc along the circumferential direction; the second stirring mechanism comprises a stirring frame arranged on the rotating shaft, and a plurality of stirring impellers are uniformly arranged on the stirring frame. Utilize the prilling granulator among this utility model, do not need the high-speed rotation of agitating unit with material misce bene, prevent the material blocking, but also can detach the interference of iron nature foreign matter.
The existing granulating device does not separate the industrial silicon coarse particles and the industrial silicon fine particles, so that the quality of finished products is influenced, the feeding amount of a feeding port of the crushing device is uneven, the phenomenon of uneven crushing is easy to cause, and the adverse effect caused by mixing of metal substances can not be effectively removed, so that the device for granulating silicon needs to be designed and researched urgently, the defects of the prior art are overcome, and the requirements of actual production and life are met.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a granulating device for discharging molten silicon and a granulating method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a granulating device for discharging molten silicon, which comprises a shell, wherein a feed inlet is formed in the top of the shell, a distribution device is arranged at one end, corresponding to the feed inlet, in the shell, a medium port and a recovery port I are respectively arranged at two sides of the shell, which are close to the distribution device, a cooling piece is symmetrically arranged below the medium port and the recovery port I in the shell, a discharge port is formed in the bottom of the shell, the discharge port is externally connected with a screening device, and a recovery port II is formed in the screening device.
According to the granulating device, the step of crushing a metal structure in the traditional process is omitted by the mutual matching of the distribution device, the cooling piece and the screening device, the risk of mixing other metal elements is eliminated, and meanwhile, nitrogen is used as cooling gas to prevent silicon liquid drops from being oxidized in the granulating process, so that silicon granules prepared from molten silicon liquid have higher purity, and the granulating device is simple in structure, convenient to adjust and suitable for popularization.
As a preferable technical solution of the present invention, the distribution device is a water-cooled distributor.
As a preferable technical scheme of the invention, the distribution device is conical, the conical tip of the distribution device faces the feed inlet, the distribution device is provided with through holes, and cooling water circulates in the distribution device.
The invention is particularly limited in the position and shape (conical shape) of the dispensing means, since in this arrangement it is ensured that the molten silicon is divided into identical small strands and that, finally, relatively uniform granules are obtained for granulation.
As a preferable technical scheme of the invention, the medium port is a cold solid medium port.
As a preferable technical solution of the present invention, the first recovery port and the second recovery port are both gas recovery ports.
The invention particularly limits the first recovery port and the second recovery port to be gas recovery ports, because the invention can recover high-temperature gas, thereby achieving the effects of saving nitrogen consumption, recovering heat and silicon dust in a high-temperature gas zone and saving energy and reducing emission.
Preferably, the gas recovery port recovers nitrogen gas.
Preferably, the first medium port and the first recovery port are formed by inserting a pipeline into the housing.
Preferably, the second recycling port is formed by inserting a pipeline into the screening device.
In a preferred embodiment of the present invention, at least two cooling elements are provided.
The cooling part can cool the molten silicon liquid, the medium for cooling the molten silicon liquid comprises nitrogen and silicon blocks, the silicon blocks divide the liquid silicon into small particles, so that the small silicon droplets are easy to solidify, the nitrogen can exchange heat on one hand, and the nitrogen spraying device can play a role of shielding gas on the other hand, so that the high-temperature silicon droplets and oxygen are prevented from reacting, and the granulation quality is influenced.
Preferably, each of said cooling members is a cooled nitrogen gas injection means.
Preferably, the spray direction of each of said cooling elements is directed towards said distribution means.
Preferably, the injection angle of each cooling element is 40 to 50 °, for example 40 °, 41 °, 42 °, 43 °, 44 °, 45 °, 46 °, 47 °, 48 °, 49 °, 50 °, but is not limited to the values listed, and other values not listed in this range of values are equally applicable.
The invention particularly limits the injection angle of the cooling part to be 40-50 degrees, and the nitrogen injection angle is specified because the nitrogen can effectively disturb falling silicon particles in the angle range, so that the nitrogen is fully contacted with the silicon particles, and the heat exchange and uniform granulation are facilitated; when the temperature is more than 50 ℃, nitrogen does not disturb part of silicon particles, so that the granulation is incomplete and large particles are easy to form; less than 40 deg. results in a short contact time between the nitrogen and the silicon particles, affecting the heat exchange time and thus the cooling effect.
Preferably, the nitrogen pressure of the cooling nitrogen gas injection device is 0.5 to 0.8MPa, and may be, for example, 0.5MPa, 0.55MPa, 0.6MPa, 0.65MPa, 0.7MPa, 0.75MPa or 0.8MPa, but is not limited to the values listed above, and other values not listed above within the range of values are also applicable.
As a preferable technical scheme of the invention, the screening device is a vibrating screening machine.
Preferably, the bottom of the vibrating screen machine is provided with a screening plate.
Preferably, the screening plate is divided into a first screening section, a second screening section and a third screening section in the material flow direction.
Preferably, the first screen section has a smaller aperture size than the second screen section, which is smaller than the third screen section.
In a second aspect, the present invention provides a granulating method of the granulating apparatus of the first aspect, the granulating method comprising:
molten silicon liquid enters the shell from the feeding hole, silicon medium particles enter the shell from the medium hole, are dispersed by the distribution device and cooled by the cooling part in sequence, and are dispersed into molten silicon granules with different particle sizes after reaching the screening device.
In a preferred embodiment of the present invention, the molten silicon is at a temperature of 1500 to 1600 ℃, for example 1500 ℃, 1510 ℃, 1520 ℃, 1530 ℃, 1540 ℃, 1550 ℃, 1560 ℃, 1570 ℃, 1580 ℃, 1590 ℃ and 1600 ℃, but not limited to the values listed, and other values not listed in the range of values are also applicable.
Preferably, the flow rate of the silicon medium particles entering the interior of the shell from the medium port is 5 to 8m/s, and may be, for example, 5m/s, 5.5m/s, 6m/s, 6.5m/s, 7m/s, 7.5m/s, 8m/s, but is not limited to the values listed, and other values not listed in the range of values are equally applicable.
In a preferred embodiment of the present invention, the distribution device distributes the molten silicon liquid into at least two silicon liquid streams.
Preferably, the distribution device disperses the molten silicon liquid into 2 to 10 streams of silicon, for example, 2, 3, 4, 5, 6, 7, 8, 9, 10 streams, but not limited to the recited values, and other values not recited within the range of values are equally applicable.
Preferably, the temperature of the molten silicon after cooling by the cooling member is 200 to 250 ℃, for example, 200 ℃, 210 ℃, 220 ℃, 230 ℃, 240 ℃ and 250 ℃, but is not limited to the recited values, and other values not recited in the range of the values are also applicable.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the granulation device provided by the invention has the advantages that through the mutual matching of the distribution device, the cooling part and the screening device, the step of crushing a metal structure in the traditional process is omitted, the risk of mixing other metal elements is eliminated, meanwhile, nitrogen is adopted as cooling gas, the silicon liquid drops are prevented from being oxidized in the granulation process, the silicon granulation purity of the molten silicon liquid is higher, the structure is simple, the adjustment is convenient, and the granulation device is suitable for popularization.
Drawings
FIG. 1 is a schematic diagram of a molten silicon discharge granulation apparatus according to one embodiment of the present invention;
wherein, 1-shell; 2-a distribution device; 3-a cooling member; 4-a screening device; 5-a media port; 6-a first recycling port; 7-a second recycling port; 8-a feed inlet; 9-a discharge hole; 10-finished product warehouse I; 11-a cold solid state medium collection bin; 12-finished product bin two.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes the necessary piping, conventional valves and general pumping equipment for achieving the process integrity, but the above contents do not belong to the main inventive point of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not specifically limited thereto.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In a specific embodiment, the invention provides a granulating device for discharging molten silicon, as shown in fig. 1, the granulating device comprises a shell 1, a feed inlet 8 is arranged at the top of the shell 1, a distribution device 2 is arranged at one end of the shell 1 corresponding to the feed inlet 8, a medium port 5 and a recovery port 6 are respectively arranged at two sides of the shell 1 close to the distribution device 2, cooling pieces 3 are symmetrically arranged below the medium port 5 and the recovery port 6 in the shell 1, a discharge port 9 is arranged at the bottom of the shell 1, the discharge port 9 is externally connected with a screening device 4, and a recovery port two 7 is arranged on the screening device 4.
According to the granulating device, the distribution device 2, the cooling piece 3 and the screening device 4 are matched with each other, so that the step of crushing a metal structure in the traditional process is omitted, the risk of mixing other metal elements is eliminated, the silicon granulating purity of the molten silicon liquid is higher, the structure is simple, the regulation is convenient, and the granulating device is suitable for popularization.
The distribution device 2 is a water-cooled distributor. The distribution device 2 is conical, the conical cone point faces the feed inlet 8, the distribution device 2 is provided with through holes, and cooling water circulation is arranged in the distribution device 2. The invention is particularly limited in the position and shape (conical shape) of the dispensing device, since in this arrangement it is ensured that the molten silicon is divided into identical small strands, and that finally a relatively uniform granulation of the granules is achieved.
The medium port 5 is a cold solid medium port 5, and the first recovery port 6 and the second recovery port 7 are both gas recovery ports. The invention particularly limits the first recovery port 6 and the second recovery port 7 to be gas recovery ports, because the invention can recover high-temperature gas, thereby achieving the effects of saving nitrogen consumption, recovering heat and silicon dust of high-temperature gas belts and saving energy and reducing emission.
The gas recycling port recycles nitrogen, the medium port 5 and the recycling port I6 are formed by inserting pipelines into the shell 1, and the recycling port II 7 is formed by inserting pipelines into the screening device 4.
The cooling parts 3 are at least two, each cooling part 3 is a cooling nitrogen injection device, the injection direction of each cooling part 3 faces the distribution device 2, the cooling parts 3 can cool molten silicon liquid, media for cooling the molten silicon liquid comprise nitrogen and silicon blocks, the silicon blocks divide the liquid silicon into small particles through operation, the small silicon droplets are easy to solidify, the nitrogen exchanges heat on one hand, and on the other hand, the nitrogen injection devices can also play a role of shielding gas to prevent high-temperature silicon droplets from reacting with oxygen, so that granulation quality is influenced.
The spraying angle of each cooling part 3 is 40-50 degrees, the nitrogen pressure of a cooling nitrogen spraying device is 0.5-0.8 MPa, the spraying angle of each cooling part 3 is particularly limited to be 40-50 degrees, and the nitrogen spraying angle is specified because the nitrogen can effectively disturb falling silicon particles in the angle range, so that the nitrogen is fully contacted with the silicon particles, the heat exchange and the granulation are facilitated to be uniform, and when the spraying angle is more than 50 degrees, the nitrogen does not disturb operation on part of the silicon particles, the granulation is incomplete, and large particles are easily formed; less than 40 deg. results in a short contact time between the nitrogen and the silicon particles, affecting the heat exchange time and thus the cooling effect.
The screening device 4 is a vibrating screen classifier, a screening plate is arranged at the bottom of the vibrating screen classifier, the screening plate is divided into a first screening section, a second screening section and a third screening section along the material flowing direction, further, the aperture of the first screening section is smaller than that of the second screening section, and the aperture of the second screening section is smaller than that of the third screening section.
In another embodiment, the present invention provides a granulation method using the granulation apparatus as set forth in one embodiment, the granulation method including:
molten silicon liquid enters the shell 1 from the feeding hole 8, silicon medium particles enter the shell 1 from the medium hole 5, are dispersed by the distribution device 2 and cooled by the cooling piece 3 in sequence, and are dispersed into molten silicon granules with different particle sizes after reaching the screening device 4.
The temperature of the molten silicon liquid is 1500-1600 ℃, and the flow velocity of the silicon medium particles entering the shell 1 from the medium port 5 is 5-8 m/s; the distribution device 2 disperses the molten silicon liquid into at least two silicon liquid flows, and the distribution device 2 disperses the molten silicon liquid into 2-10 silicon liquid flows; the temperature of the molten silicon after being cooled by the cooling part 3 is 200-250 ℃.
Example 1
This example provides a granulation apparatus and a granulation method for discharging molten silicon, in which:
the prilling granulator includes casing 1, and feed inlet 8 has been seted up at 1 top of casing, and 1 inside one end that corresponds feed inlet 8 of casing is provided with distribution device 2, and 1 both sides of casing that are close to distribution device 2 are provided with medium mouth 5 respectively and retrieve a mouthful 6, and 1 inside of casing is in the below symmetry of medium mouth 5 and retrieve a mouthful 6 is provided with cooling part 3, and discharge gate 9 has been seted up to 1 bottom of casing, and the external screening plant 4 of discharge gate 9, and has seted up on the screening plant 4 and retrieved a mouthful two 7.
The distribution device 2 is a water-cooling distributor, the distribution device 2 is conical, the conical tip faces the feed inlet 8, the distribution device 2 is provided with through holes, and cooling water circulation is arranged in the distribution device 2. The medium port 5 is a cold solid medium port 5, and the first recovery port 6 and the second recovery port 7 are both gas recovery ports. The gas recycling port recycles nitrogen, the medium port 5 and the recycling port I6 are formed by inserting pipelines into the shell 1, and the recycling port II 7 is formed by inserting pipelines into the screening device 4. The cooling members 3 are provided with 6 cooling members, each cooling member 3 is a cooling nitrogen gas injection device, and the injection direction of each cooling member 3 faces the distribution device 2.
The spraying angle of each cooling part 3 is 45 degrees, the nitrogen pressure of the cooling nitrogen spraying device is 0.6MPa, the screening device 4 is a vibrating screening machine, the bottom of the vibrating screening machine is provided with a screening plate, the screening plate is divided into a first screening section, a second screening section and a third screening section along the material flowing direction, and the first screening section, the second screening section and the third screening section are respectively connected with a finished product bin I10, a cold solid state medium collecting bin 11 and a finished product bin II 12, further, the aperture of the first screening section is smaller than that of the second screening section, and the aperture of the second screening section is smaller than that of the third screening section.
The granulation method of the granulation device comprises the following steps: molten silicon liquid enters the shell 1 from the feeding port 8, silicon medium particles enter the shell 1 from the medium port 5, are dispersed by the distribution device 2 and cooled by the cooling part 3 in sequence, and are dispersed into molten silicon particles with different particle diameters after reaching the screening device 4.
The temperature of the molten silicon liquid is 1550 ℃, and the flow speed of the silicon medium particles entering the shell 1 from the medium port 5 is 6m/s; the distribution device 2 disperses the molten silicon liquid into at least two silicon liquid flows, and the distribution device 2 disperses the molten silicon liquid into 8 silicon liquid flows; the temperature of the molten silicon after cooling by the cooling member 3 was 250 ℃.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (15)
1. A method of pelletizing a molten silicon discharge, the method comprising:
molten silicon liquid enters the shell from the feeding hole, silicon medium particles enter the shell from the medium hole, are dispersed by the distribution device and cooled by the cooling part in sequence, and are dispersed into molten silicon granules with different particle diameters after reaching the screening device;
the medium port is a cold solid state medium port;
the granulation method adopts a granulation device, the granulation device comprises a shell, a feed inlet is formed in the top of the shell, a distribution device is arranged at one end of the interior of the shell, which corresponds to the feed inlet, a medium port and a recovery port I are respectively arranged at two sides of the shell, which are close to the distribution device, cooling pieces are symmetrically arranged below the medium port and the recovery port I in the interior of the shell, a discharge port is formed in the bottom of the shell, the discharge port is externally connected with a screening device, and a recovery port II is formed in the screening device;
the number of the cooling parts is at least two, each cooling part is a cooling nitrogen gas injection device, the injection direction of each cooling part faces the distribution device, and the injection angle of each cooling part is 40-50 degrees;
the distribution device is a water-cooling distributor, the distribution device is conical, the conical tip faces the feed inlet, the distribution device is provided with through holes, and cooling water circulation is arranged in the distribution device.
2. The granulation method according to claim 1, wherein both the first recovery port and the second recovery port are gas recovery ports.
3. The granulation method according to claim 2, wherein the gas recovery port recovers nitrogen gas.
4. The granulation method according to claim 1, wherein the first medium port and the second recovery port are formed by inserting a pipe into the housing.
5. The granulation method as claimed in claim 1, wherein the second recovery port is formed by inserting a pipe into a sieving device.
6. The granulation method as claimed in claim 1, wherein the nitrogen pressure of the cooling nitrogen injection device is 0.5 to 0.8MPa.
7. The granulation method according to claim 1, wherein the sieving device is a vibrating sieving machine.
8. The granulation method according to claim 7, wherein the vibrating screen machine is provided with a screening plate at the bottom.
9. Granulation method according to claim 8, characterized in that the sieve plate is divided in the material flow direction into a first sieve section, a second sieve section and a third sieve section.
10. The granulation method according to claim 9, wherein the first sieve section has a smaller pore size than the second sieve section, and the second sieve section has a smaller pore size than the third sieve section.
11. Granulation method according to claim 1, characterized in that the temperature of the molten silicon is comprised between 1500 and 1600 ℃.
12. The granulation method as claimed in claim 1, wherein the flow rate of the silicon medium particles entering the inside of the shell from the medium port is 5 to 8m/s.
13. Granulation process according to claim 1, wherein the distribution device disperses the molten silicon liquid into at least two silicon liquid streams.
14. The granulation method as claimed in claim 13, wherein the distribution device disperses the molten silicon liquid into 2 to 10 streams of silicon liquid.
15. The granulation method as claimed in claim 1, wherein the temperature of the molten silicon after being cooled by the cooling member is 200 to 250 ℃.
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| CN202210135315.1A CN114405394B (en) | 2022-02-14 | 2022-02-14 | Granulating device and granulating method for discharging molten silicon |
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| CN202210135315.1A CN114405394B (en) | 2022-02-14 | 2022-02-14 | Granulating device and granulating method for discharging molten silicon |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09220460A (en) * | 1995-12-14 | 1997-08-26 | Takeda Chem Ind Ltd | Cooling and granulating method and device therefor |
| WO2001085613A1 (en) * | 2000-05-11 | 2001-11-15 | Tokuyama Corporation | Polycrystalline silicon and process and apparatus for producing the same |
| US6432330B1 (en) * | 2001-03-28 | 2002-08-13 | Ball Semiconductor, Inc. | Jet system for spherical shape devices |
| JP4227816B2 (en) * | 2003-02-20 | 2009-02-18 | 日本ニューマチック工業株式会社 | Powder heat treatment equipment |
| CN102151654A (en) * | 2010-12-30 | 2011-08-17 | 广东福利龙复合肥有限公司 | Screen screening device with cooling and drying functions |
| CN202124584U (en) * | 2011-04-29 | 2012-01-25 | 安徽泰达新材料股份有限公司 | Trimellitic anhydride product |
| CN107601510B (en) * | 2017-09-21 | 2018-05-04 | 亚洲硅业（青海）有限公司 | A kind of device and method for preparing particle silicon seed |
| CN209735547U (en) * | 2018-12-29 | 2019-12-06 | 内蒙古凯旋消毒制品有限公司 | Granulation cooling system of sodium bisulfate |
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