CN210340347U - Magnetic separation type electron beam melting metallic silicon purification device - Google Patents
Magnetic separation type electron beam melting metallic silicon purification device Download PDFInfo
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- CN210340347U CN210340347U CN201920673699.6U CN201920673699U CN210340347U CN 210340347 U CN210340347 U CN 210340347U CN 201920673699 U CN201920673699 U CN 201920673699U CN 210340347 U CN210340347 U CN 210340347U
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Abstract
The utility model relates to a magnetic separation type electron beam melting metallic silicon purification device, which comprises a melting furnace and a storage hopper, wherein the bottom of the storage hopper is provided with a blanking pipe, the blanking pipe extends into the melting furnace, the top of the storage hopper is connected with a magnetic separation device, a horizontal support plate is arranged in the melting furnace under the blanking pipe, a melting crucible is arranged on the horizontal support plate, one end of the bottom of the melting crucible is hinged at the upper surface edge of the horizontal support plate, the other end of the bottom of the melting crucible is hinged with a telescopic cylinder, the bottom of the telescopic cylinder is hinged on the horizontal support plate, the top of the melting furnace is provided with an electron beam emission device connected with a power supply, one side of the melting crucible in the melting furnace is provided with an ingot pulling platform, the top of the ingot pulling platform is provided with an ingot pulling crucible, the bottom of the ingot pulling, the exhaust pipe is provided with an exhaust hole. The utility model discloses reduced the impurity piece at product top, the output of product is higher.
Description
Technical Field
The utility model relates to a technical field of metallic silicon purification especially relates to a magnetic separation type electron beam melting metallic silicon purification device.
Background
The silicon metal is also called polysilicon and crystalline silicon. Solar grade polysilicon material is an important raw material of solar cells, the solar cells can convert solar energy into electric energy, and the solar energy has great application value at present when conventional energy is in short supply. Therefore, the performance of the silicon metal directly determines the utilization efficiency of solar energy.
The metal silicon contains many impurities, so that the production process of the metal silicon has many difficulties and poor performance. At present, the method of electron beam melting is mostly adopted to purify the metallic silicon, the metallic silicon is melted at the high temperature generated by the electron beam, impurities with higher saturated vapor pressure, such as phosphorus, aluminum and the like, are effectively removed by utilizing the surface evaporation effect, a section of impurity block is generated at the top of the cast ingot which is gradually solidified, and the purified metallic silicon can be obtained by removing the upper part of the impurity block after the process is finished.
However, the prior purification method has no pretreatment procedure, so that the volume of the impurity block generated finally is larger, and the volume of the product left is smaller.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides a magnetic separation type electron beam melting silicon metal purification device.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
a magnetic separation type electron beam melting metallic silicon purification device comprises a melting furnace and a storage hopper, wherein a blanking pipe is arranged at the bottom of the storage hopper, a switch valve is arranged on the blanking pipe, the blanking pipe extends into the melting furnace, a magnetic separation device is connected to the top of the storage hopper, an annular screening net is arranged in the magnetic separation device, a feed inlet is formed in the top of the annular screening net of the magnetic separation device, a discharge outlet is formed in the bottom of the annular screening net, annular magnet plates are arranged at the upper end and the lower end of the inner wall of the magnetic separation device, magnetic slag outlets are formed in the two ends of the bottom of the magnetic separation device, a horizontal support plate is arranged under the blanking pipe in the melting furnace, a melting crucible is arranged on the horizontal support plate, one end of the bottom of the melting crucible is hinged to the edge of, the smelting furnace top is equipped with the electron beam emitter who is connected with the power, electron beam emitter is towards smelting the crucible, be equipped with in the smelting furnace and draw the ingot platform smelting crucible one side, it is equipped with and draws the ingot crucible to draw ingot platform top, it is less than and smelts the crucible to draw the ingot crucible, it is equipped with and draws the ingot cylinder to draw ingot platform bottom, it has the water-cooling chamber of cooling water to draw the ingot cylinder to be equipped with the inner wall packing outward, it is equipped with the graphite pipe to draw the interior top of ingot crucible, graphite pipe top even has the exhaust tube, be equipped with the aspirating hole on the exhaust tube.
And a guide plate is arranged on one side of the smelting crucible facing the ingot pulling crucible.
The electron beam emitting devices are two in total.
The utility model has the advantages that: the utility model discloses silica flour is earlier through the magnetic separation device before getting into the smelting furnace and smelting, iron type impurity to inside is tentatively got rid of, make the in-process impurity that smelts in the smelting furnace further reduce, silica flour melts under the high temperature of smelting the inherent electron beam of crucible, then it is leading-in the ingot crucible of drawing silicon liquid under telescopic cylinder's drive with the crucible to smelt, the cooling shaping, the setting of graphite pipe, can be through reducing the pressure in the graphite pipe, make the deposited impurity liquid in ingot crucible top can get into in the graphite pipe, thereby the impurity piece at product top has been reduced, the output volume of product is higher.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-smelting a furnace; 2-a storage hopper; 3-a blanking pipe; 4-switching the valve; 5-a magnetic separation device; 6-annular screening net; 7-a feed inlet; 8-a discharge hole; 9-annular magnet plate; 10-magnetic slag outlet; 11-a horizontal support plate; 12-a melting crucible; 13-a telescopic cylinder; 14-electron beam emitting means; 15-pulling the ingot platform; 16-pulling the ingot crucible; 17-an ingot pulling cylinder; 18-a water-cooled cavity; 19-a graphite conduit; 20-an air extraction pipe; 21-a flow guide plate;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
as shown in figure 1, the magnetic separation type electron beam melting metallic silicon purification device comprises a melting furnace 1 and a storage hopper 2, wherein a blanking pipe 3 is arranged at the bottom of the storage hopper 2, a switch valve 4 is arranged on the blanking pipe 3, the blanking pipe 3 extends into the melting furnace 1, a magnetic separation device 5 is connected to the top of the storage hopper 2, an annular screening net 6 is arranged in the magnetic separation device 5, a feeding port 7 and a discharging port 8 are arranged at the top of the annular screening net 6 of the magnetic separation device 5, annular magnet plates 9 are arranged at the upper end and the lower end of the inner wall of the magnetic separation device 5, magnetic slag outlets 10 are arranged at the two ends of the bottom of the magnetic separation device 5, a horizontal support plate 11 is arranged under the blanking pipe 3 in the melting furnace 1, a melting crucible 12 is arranged on the horizontal support plate 11, one end of the bottom of the melting crucible 12 is hinged to the edge of the upper surface, the bottom of telescopic cylinder 13 articulates on horizontal support plate 11, 1 top of smelting furnace is equipped with electron beam emitter 14 with the power connection, electron beam emitter 14 is towards smelting crucible 12, 1 internal smelting crucible 12 one side of smelting furnace is equipped with draws ingot platform 15, it is equipped with and draws ingot crucible 16 to draw ingot platform 15 top, it is less than smelting crucible 12 to draw ingot crucible 16, it is equipped with and draws ingot cylinder 17 to draw ingot platform 15 bottom, it is equipped with the water-cooling chamber 18 that the inner wall was filled with the cooling water to draw ingot cylinder 17 outside, it is equipped with graphite pipe 19 to draw the top in the ingot crucible 16, graphite pipe 19 top even has exhaust tube 20, be equipped with the aspirating hole on the exhaust tube 20.
A guide plate 21 is arranged on one side of the smelting crucible 12 facing the ingot pulling crucible 16.
The electron beam emitting devices 14 are two in total.
The utility model discloses silica flour is earlier through magnetic separation device 5 before getting into smelting furnace 1 and smelting, iron type impurity to inside is tentatively got rid of, make the in-process impurity of smelting in smelting furnace 1 further reduce, silica flour melts under the high temperature of electron beam in smelting crucible 12, then it is leading-in pulling ingot crucible 16 with silicon fluid to smelt crucible 12 under telescopic cylinder 13's drive, cooling shaping, graphite pipe 19's setting, through the aspirating hole, the outside extraction gas of exhaust tube 20, can be through reducing the pressure in graphite pipe 19, make the sedimentary impurity liquid in pulling ingot crucible 16 top can get into graphite pipe 19 in, thereby the impurity piece at product top has been reduced, the output of product is higher.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.
Claims (3)
1. The magnetic separation type electron beam smelting metallic silicon purification device is characterized by comprising a smelting furnace (1) and a storage hopper (2), wherein a blanking pipe (3) is arranged at the bottom of the storage hopper (2), a switch valve (4) is arranged on the blanking pipe (3), the blanking pipe (3) extends into the smelting furnace (1), the top of the storage hopper (2) is connected with a magnetic separation device (5), an annular screening net (6) is arranged in the magnetic separation device (5), a feed inlet (7) is arranged at the top of the annular screening net (6) of the magnetic separation device (5) and a discharge outlet (8) is arranged at the bottom of the annular screening net (6), annular magnet plates (9) are arranged at the upper end and the lower end of the inner wall of the magnetic separation device (5), magnetic slag outlets (10) are arranged at the two ends of the bottom of the magnetic separation device (5), and a horizontal support plate (11) is arranged, the smelting furnace is characterized in that a smelting crucible (12) is arranged on the horizontal support plate (11), one end of the bottom of the smelting crucible (12) is hinged to the edge of the upper surface of the horizontal support plate (11), and the other end of the bottom of the smelting crucible (12) is hinged to a telescopic cylinder (13), the bottom of the telescopic cylinder (13) is hinged to the horizontal support plate (11), an electron beam emitting device (14) connected with a power supply is arranged at the top of the smelting furnace (1), the electron beam emitting device (14) faces the smelting crucible (12), an ingot pulling platform (15) is arranged on one side of the smelting crucible (12) in the smelting furnace (1), an ingot pulling crucible (16) is arranged at the top of the ingot pulling platform (15), the ingot pulling crucible (16) is lower than the smelting crucible (12), an ingot pulling cylinder (17) is arranged at the bottom of the ingot pulling platform (15), a water cooling cavity (18, the ingot pulling crucible is characterized in that a graphite guide pipe (19) is arranged at the inner top of the ingot pulling crucible (16), the top of the graphite guide pipe (19) is connected with an exhaust pipe (20), and an exhaust hole is formed in the exhaust pipe (20).
2. The refining device for silicon metal by magnetic separation type electron beam melting according to claim 1, characterized in that the side of the melting crucible (12) facing the ingot crucible (16) is provided with a deflector (21).
3. The magnetic separation type electron beam melting metallic silicon purifying apparatus as claimed in claim 2, wherein said electron beam emitting means (14) is two in total.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920673699.6U CN210340347U (en) | 2019-05-13 | 2019-05-13 | Magnetic separation type electron beam melting metallic silicon purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920673699.6U CN210340347U (en) | 2019-05-13 | 2019-05-13 | Magnetic separation type electron beam melting metallic silicon purification device |
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| Publication Number | Publication Date |
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| CN210340347U true CN210340347U (en) | 2020-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920673699.6U Active CN210340347U (en) | 2019-05-13 | 2019-05-13 | Magnetic separation type electron beam melting metallic silicon purification device |
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| CN (1) | CN210340347U (en) |
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- 2019-05-13 CN CN201920673699.6U patent/CN210340347U/en active Active
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