CN219689344U - Separation structure of liquid silicon slag in intermediate frequency furnace smelting industrial silicon production - Google Patents
Separation structure of liquid silicon slag in intermediate frequency furnace smelting industrial silicon production Download PDFInfo
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- CN219689344U CN219689344U CN202321221921.1U CN202321221921U CN219689344U CN 219689344 U CN219689344 U CN 219689344U CN 202321221921 U CN202321221921 U CN 202321221921U CN 219689344 U CN219689344 U CN 219689344U
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- launder
- silicon
- slag
- main
- runner
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 120
- 239000010703 silicon Substances 0.000 title claims abstract description 120
- 239000002893 slag Substances 0.000 title claims abstract description 111
- 238000000926 separation method Methods 0.000 title claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title claims abstract description 26
- 238000003723 Smelting Methods 0.000 title claims description 22
- 239000000463 material Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910002804 graphite Inorganic materials 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 12
- 239000002210 silicon-based material Substances 0.000 claims description 6
- XJKVPKYVPCWHFO-UHFFFAOYSA-N silicon;hydrate Chemical compound O.[Si] XJKVPKYVPCWHFO-UHFFFAOYSA-N 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 description 5
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013070 direct material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Silicon Compounds (AREA)
Abstract
The utility model relates to the technical field of production of industrial silicon smelted by an intermediate frequency furnace, in particular to a separation structure of liquid silicon slag in the production of industrial silicon smelted by the intermediate frequency furnace, which comprises a separation main body, a main launder, a slag launder and a silicon launder; the main launder, the slag launder and the silicon launder are arranged on the separation main body; the main launder is obliquely arranged; the slag launder is positioned below the main launder; the notch of the slag runner faces the main runner and extends to the downstream of the main runner; the slag launder is obliquely arranged; the flow guiding direction of the slag runner is mutually perpendicular to the flow guiding direction of the main runner; the silicon launder is positioned below the main launder; the notch of the silicon launder is upward; the silicon launder is arranged obliquely; the flow guiding direction of the silicon launder is mutually perpendicular to the flow guiding direction of the main launder; the silicon launder is positioned at one side of the slag launder far away from the main launder; the bottom surface of the main launder covers at least 3/4 of the width of the slag launder in the vertical direction. The utility model can improve the separation efficiency of the silicon slag and the silicon water and reduce the production cost.
Description
Technical Field
The utility model relates to the technical field of production of industrial silicon smelted by an intermediate frequency furnace, in particular to a separation structure of liquid silicon slag in production of industrial silicon smelted by an intermediate frequency furnace.
Background
Along with the improvement of environmental protection concepts, the utilization technology of the silicon-containing solid waste is also continuously developed, in particular to the recycling technology of the silicon-containing solid waste for cutting silicon mud, organic silicon and polysilicon slag slurry, and most of the production technologies are that the silicon-containing solid is granulated and dried firstly, and then industrial silicon is produced through smelting in an intermediate frequency furnace. In the smelting process of industrial silicon, a large amount of auxiliary materials are generally used for slagging treatment, calcium salt, sodium salt and mixtures are generally used as slagging agents, the slagging agents can form scum or slag sediment in smelting production due to different proportions, the slagging agents can be combined with silicon dioxide generated in the production process to generate silicate, the silicate and silicon water coexist in a hearth, after the silicon water and the silicon slag are stopped to be heated and placed still, the silicon water and the silicon slag are layered due to different specific gravities to form an obvious interface, but when the silicon water and the silicon slag are poured to the layered interface, the silicon water and the silicon slag can be mixed and flow out, and then the slag is mixed into silicon, so that the quality of a finished product is seriously influenced.
In the prior art, the phenomenon of layering of silicon and slag is generally utilized, and the scum and the sediment are separated through a slag skimming tool. When scum is scraped, the silicon slag on the surface of the silicon liquid is scraped as much as possible, and then the silicon water is poured out and poured into ingots; however, a small part of the floating slag always remains on the surface of the silicon liquid and cannot be removed, so that a small amount of floating slag enters a pouring ingot mould along with silicon water, and the quality of a finished product is affected; if the slag is completely removed, the slag removing depth and times are required to be increased, so that a large amount of silicon liquid is brought out, and the labor intensity is increased. When the slag is scraped, the silicon water is poured out firstly, then the silicon slag which is deposited at the bottom of the hearth is scraped out by a slag removing tool, and the silicon and slag are mixed due to the control of the outflow of the silicon slag, so that the yield of products is reduced, the manual slag removing work efficiency is low, and the manual slag removing work efficiency is operated at high temperature, so that the manual slag removing device has great potential safety hazard.
Disclosure of Invention
In view of the above, the utility model provides a separation structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting, which mainly aims to improve the separation efficiency of silicon slag and silicon water and reduce the production cost.
In order to achieve the above purpose, the present utility model mainly provides the following technical solutions:
the embodiment of the utility model provides a separation structure of liquid silicon slag in industrial silicon production by intermediate frequency furnace smelting, which comprises a separation main body, a main launder, a slag launder and a silicon launder;
the main flow groove is arranged on the separation main body; the main flow groove is obliquely arranged and is used for guiding materials downwards; the upper end part of the main launder is provided with a feed inlet;
the slag runner is of a groove structure; the slag runner is arranged on the separation main body; the slag runner is positioned below the main runner; the notch of the slag runner faces the main runner and extends towards the downstream of the main runner, and is used for receiving materials flowing down by the main runner; the slag launder is obliquely arranged and is used for guiding slag outwards;
the flow guiding direction of the slag runner is mutually perpendicular to the flow guiding direction of the main runner;
the silicon launder is of a groove structure; the silicon launder is arranged on the separation main body; the silicon launder is positioned below the main flow groove; the notch of the silicon launder is upward and is used for receiving the materials flowing down by the main launder; the silicon launder is obliquely arranged and is used for guiding silicon materials outwards;
the flow guiding direction of the silicon flow groove is mutually perpendicular to the flow guiding direction of the main flow groove;
the silicon launder is positioned at one side of the slag launder away from the main launder; a separation member is arranged between the silicon launder and the slag launder; the bottom surface of the main launder blocks at least 3/4 of the width of the slag launder in the vertical direction.
Further, the inclination angle of the bottom surface of the main launder is 30-40 degrees.
Further, the inclination angle of the bottom surface of the slag runner is 40-50 degrees.
Further, the inclination angle of the bottom surface of the silicon launder is 20-30 degrees.
Further, the separation main body is made of high-temperature resistant materials.
Further, a graphite layer is arranged on the inner side of the main launder;
a graphite layer is arranged on the inner side of the slag runner;
and a graphite layer is arranged on the inner side of the silicon launder.
Further, the separating body is made of graphite.
Further, the silicon launder and the slag launder direct material to opposite sides of the main launder.
Further, the silicon launder and the slag launder guide the material to the same side of the main launder.
By means of the technical scheme, the separation structure of the liquid silicon slag in the industrial silicon production by the intermediate frequency furnace smelting has at least the following advantages:
can improve the separation efficiency of the silicon slag and the silicon water and reduce the production cost.
The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of a separation structure of liquid silicon slag in industrial silicon production by intermediate frequency furnace smelting according to an embodiment of the utility model.
The figure shows:
1 is a separating main body, 2 is a main flow groove, 2-1 is a feed inlet, 3 is a slag flow groove, 4 is a silicon flow groove, and 5 is a baffle member.
Detailed Description
In order to further describe the technical means and effects adopted for achieving the preset aim of the utility model, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the utility model with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.
As shown in fig. 1, the separation structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to one embodiment of the utility model comprises a separation main body 1, a main flow groove 2, a slag flow groove 3 and a silicon flow groove 4; the main launder 2 is arranged on the separation main body 1; the main launder 2 is obliquely arranged and is used for guiding materials downwards; the upper end part of the main launder 2 is provided with a feed inlet 2-1; when the furnace is used, the feed inlet 2-1 of the main flow groove 2 can be arranged below the furnace mouth of the intermediate frequency furnace smelting furnace, and can completely catch the silicon and slag solution poured from the furnace. The slag runner 3 is of a groove structure; the slag runner 3 is arranged on the separating main body 1; the slag runner 3 is positioned below the main runner 2; the notch of the slag runner 3 faces the main runner 2 and extends towards the downstream of the main runner 2 for receiving the materials flowing down by the main runner 2; the slag launder 3 is obliquely arranged and is used for guiding slag outwards; the flow guiding direction of the slag runner 3 is mutually perpendicular to the flow guiding direction of the main runner 2; the silicon launder 4 is a groove structure; the silicon launder 4 is arranged on the separation main body 1; the silicon launder 4 is positioned below the main launder 2; the notch of the silicon launder 4 is upward and is used for receiving the materials which flow down from the main launder 2; the silicon launder 4 is arranged obliquely and is used for guiding silicon material outwards; the flow guiding direction of the silicon launder 4 is mutually perpendicular to the flow guiding direction of the main launder 2; the silicon launder 4 is positioned at one side of the slag launder 3 away from the main launder 2; a baffle member 5 is arranged between the silicon launder 4 and the slag launder 3; the bottom surface of the main launder 2 covers at least 3/4 of the width of the slag launder 3 in the vertical direction.
At high temperature, the slag phase is a molten liquid substance with fluidity, and the fluidity and penetrability of the molten silicon at the temperature are very good and far greater than those of silicate. According to the separation structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting, when mixed high-temperature liquid of silicon and slag is poured into the main launder and flows downwards from the tail end of the main launder, a diversion phenomenon is formed due to different specific gravity and fluidity of the liquid lower silicon and slag, inertia and other reasons, and according to the diversion phenomenon, the slag launder 3 and the silicon launder 4 are used for diversion, so that the high-efficiency separation of the silicon and the slag is realized, and the production cost is reduced.
According to the separating structure of the liquid silicon slag in the industrial silicon production of the intermediate frequency furnace smelting provided by the embodiment of the utility model, the labor intensity of operators can be reduced, and the operation risk is avoided.
Preferably, the inclination angle of the bottom surface of the main flow groove 2 is 30-40 degrees, so as to facilitate the flow of silicon and slag solution.
As a preference of the above embodiment, the inclination angle of the bottom surface of the slag runner 3 is 40 ° to 50 ° to ensure that the silicon slag can smoothly flow into the slag mold without clogging.
As the preferable inclination angle of the bottom surface of the silicon launder 4 is 20-30 degrees, the method is favorable for reducing the scouring of the silicon water to the pouring mould.
As a preferable example of the above embodiment, the separation body 1 is made of a high temperature resistant material to support the high temperature environment of the silicon water. It is further preferred that the inner side of the main flow groove 2 is provided with a graphite layer, which is beneficial to reducing pollution to silicon materials and slag materials. A graphite layer is arranged on the inner side of the slag runner 3; is beneficial to reducing the pollution to slag. The graphite layer is arranged on the inner side of the silicon launder 4, which is beneficial to reducing the pollution to the silicon material.
Of course, the separating body 1 can be made of graphite, which is beneficial to reducing pollution to silicon materials and slag materials.
As a preference of the above embodiment, the silicon launder 4 and the slag launder 3 guide the material to opposite sides of the main launder 2, which is beneficial to separate treatment of the material and can increase the treatment space. Of course, it is not excluded that the silicon launder 4 and the slag launder 3 conduct the material to the same side of the main launder 2, and a separation effect can also be achieved.
Further, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with these terms only being used to distinguish one element from another. Without departing from the scope of the exemplary embodiments. Similarly, neither element nor element two is a sequence of elements only intended to distinguish one element from another element. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model in any way, but any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present utility model still fall within the scope of the technical solution of the present utility model.
Claims (9)
1. The separating structure of the liquid silicon slag in the production of the industrial silicon by the intermediate frequency furnace smelting is characterized by comprising a separating main body, a main launder, a slag launder and a silicon launder;
the main flow groove is arranged on the separation main body; the main flow groove is obliquely arranged and is used for guiding materials downwards; the upper end part of the main launder is provided with a feed inlet;
the slag runner is of a groove structure; the slag runner is arranged on the separation main body; the slag runner is positioned below the main runner; the notch of the slag runner faces the main runner and extends towards the downstream of the main runner, and is used for receiving materials flowing down by the main runner; the slag launder is obliquely arranged and is used for guiding slag outwards;
the flow guiding direction of the slag runner is mutually perpendicular to the flow guiding direction of the main runner;
the silicon launder is of a groove structure; the silicon launder is arranged on the separation main body; the silicon launder is positioned below the main flow groove; the notch of the silicon launder is upward and is used for receiving the materials flowing down by the main launder; the silicon launder is obliquely arranged and is used for guiding silicon materials outwards;
the flow guiding direction of the silicon flow groove is mutually perpendicular to the flow guiding direction of the main flow groove;
the silicon launder is positioned at one side of the slag launder away from the main launder; a separation member is arranged between the silicon launder and the slag launder; the bottom surface of the main launder blocks at least 3/4 of the width of the slag launder in the vertical direction.
2. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the inclination angle of the bottom surface of the main launder is 30-40 degrees.
3. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the inclination angle of the bottom surface of the slag launder is 40-50 degrees.
4. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the inclination angle of the bottom surface of the silicon launder is 20-30 degrees.
5. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the separation main body is made of high-temperature resistant materials.
6. The separation structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 5, wherein,
a graphite layer is arranged on the inner side of the main launder;
a graphite layer is arranged on the inner side of the slag runner;
and a graphite layer is arranged on the inner side of the silicon launder.
7. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the separating main body is made of graphite.
8. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the silicon launder and the slag launder guide the materials to the opposite sides of the main launder.
9. The separating structure of liquid silicon slag in the production of industrial silicon by intermediate frequency furnace smelting according to claim 1, wherein,
the silicon launder and the slag launder guide the materials to the same side of the main launder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321221921.1U CN219689344U (en) | 2023-05-19 | 2023-05-19 | Separation structure of liquid silicon slag in intermediate frequency furnace smelting industrial silicon production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321221921.1U CN219689344U (en) | 2023-05-19 | 2023-05-19 | Separation structure of liquid silicon slag in intermediate frequency furnace smelting industrial silicon production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219689344U true CN219689344U (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321221921.1U Active CN219689344U (en) | 2023-05-19 | 2023-05-19 | Separation structure of liquid silicon slag in intermediate frequency furnace smelting industrial silicon production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219689344U (en) |
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2023
- 2023-05-19 CN CN202321221921.1U patent/CN219689344U/en active Active
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