CN204898121U - Polycrystalline silicon ingot casting is with hot stove in ore deposit - Google Patents
Polycrystalline silicon ingot casting is with hot stove in ore deposit Download PDFInfo
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- CN204898121U CN204898121U CN201520654404.2U CN201520654404U CN204898121U CN 204898121 U CN204898121 U CN 204898121U CN 201520654404 U CN201520654404 U CN 201520654404U CN 204898121 U CN204898121 U CN 204898121U
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- polycrystalline silicon
- thermal insulation
- electrode
- insulation layer
- ingot casting
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Abstract
The utility model discloses a polycrystalline silicon ingot casting is with hot stove in ore deposit, including casing, heat preservation, electrode and furnace, the electrode symmetry is installed the furnace center reaches the heat preservation with the furnace juncture. The utility model discloses an at furnace center and heat preservation and furnace juncture installation electrode for the temperature is even in the furnace, has eliminated the blind area, has avoided the waste of ore resource, has reduced the energy consumption simultaneously. In addition, adopt the utility model discloses a phosphorus is below 10ppm in the polycrystalline silicon that ore deposit hot stove purification obtained, and boron accords with the requirement of crystal silicon solar energy to polycrystalline silicon purity below 5ppm.
Description
Technical field
The utility model relates to polysilicon production process field, particularly relates to a kind of polycrystalline silicon ingot casting mineral hot furnace.
Background technology
At present, existing polycrystalline silicon ingot casting mineral hot furnace adopts spherical hearth mostly, and spherical hearth is divided into raw material district, grog district and reduction zone.Ore needs when reduction zone first to produce carbide, could reduce, and carbide more than 2500 DEG C time just can reduce, therefore the carbide in body of heater Bian Siliao district is easily piled up, produce the waste of resource, electrode also can be caused simultaneously to produce short circuit, make electrode do non-power consumption.
Utility model content
In view of this, the utility model proposes a kind of polycrystalline silicon ingot casting mineral hot furnace, this polycrystalline silicon ingot casting mineral hot furnace avoids ore resource waste, and reduces power consumption.
The technical solution of the utility model is achieved in that
A kind of polycrystalline silicon ingot casting mineral hot furnace, comprises housing, thermal insulation layer, electrode and burner hearth, and described electrode symmetry is arranged on described burner hearth center and described thermal insulation layer and described burner hearth intersection.
Preferably, described thermal insulation layer comprises the first thermal insulation layer and the second thermal insulation layer.
Preferably, described first thermal insulation layer is high-temperature flame-proof insulation fibre layer, and described second thermal insulation layer is graphite carbon brick layer.
Preferably, the quantity of described electrode is 5 ~ 25.
Preferably, the electrode at burner hearth center and the distance between described thermal insulation layer and the electrode of described burner hearth intersection are equal with the distance between thermal insulation layer and the adjacent electrode of burner hearth intersection.
Preferably, described electrode is Graphite Electrodes.
The beneficial effects of the utility model are:
The utility model, by burner hearth center and thermal insulation layer and burner hearth intersection installing electrodes, makes homogeneous temperature in burner hearth, eliminates blind area, avoid the waste of ore resource, reduce energy consumption simultaneously.In addition, in the polysilicon adopting mineral hot furnace of the present utility model to purify to obtain, phosphorus is at below 10ppm, and boron, at below 5ppm, meets the requirement of crystal silicon solar to polysilicon purity.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model polycrystalline silicon ingot casting mineral hot furnace.
In figure:
1, housing; 2, the first thermal insulation layer; 3, the second thermal insulation layer; 4, burner hearth and the second thermal insulation layer intersection; 5, burner hearth; 6, electrode.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the polycrystalline silicon ingot casting mineral hot furnace that the utility model provides, comprises housing 1, thermal insulation layer, electrode 6 and burner hearth 5, and described electrode 6 symmetry is arranged on described burner hearth 5 center and described thermal insulation layer and described burner hearth 5 intersection.
Described housing 1 is for ensureing the resistance to air loss of mineral hot furnace, and when specifically implementing, housing 1 adopts channel-section steel, angle steel or band steel to be welded.
Described thermal insulation layer is used for reducing furnace heat and runs off, thus ensures the heat-insulating property of mineral hot furnace.During concrete enforcement, thermal insulation layer comprises the first thermal insulation layer 2 and the second thermal insulation layer 3, first thermal insulation layer 2 is fire resistant heat preserving layer of fibers, second thermal insulation layer 3 is graphite carbon brick layer, successively be incubated by adopting refractory masses and graphite carbon brick layer, thermal conduction is reduced gradually, and then ensure that the heat-insulating property of mineral hot furnace.
Described electrode 6 converts electrical energy into heat energy, burner hearth 5 is heated, electrode 6 is arranged on burner hearth 5 center and thermal insulation layer and burner hearth intersection 4, during concrete enforcement, the quantity of electrode 6 is 5 ~ 25, wherein in the electrode 6 at burner hearth 5 center and the distance between thermal insulation layer and the electrode 6 of burner hearth intersection 4, equal with the distance between thermal insulation layer and burner hearth intersection 5 adjacent electrode 6, above-mentioned electrode 6 be arranged so that homogeneous temperature in burner hearth, eliminate blind area, avoid the waste of ore resource, reduce energy consumption simultaneously.
In the polysilicon adopting mineral hot furnace of the present utility model to purify to obtain, phosphorus is at below 10ppm, and boron, at below 5ppm, meets the requirement of crystal silicon solar to polysilicon purity.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a polycrystalline silicon ingot casting mineral hot furnace, comprises housing, thermal insulation layer, electrode and burner hearth, it is characterized in that: described electrode symmetry is arranged on described burner hearth center and described thermal insulation layer and described burner hearth intersection.
2. polycrystalline silicon ingot casting mineral hot furnace as claimed in claim 1, is characterized in that: described thermal insulation layer comprises the first thermal insulation layer and the second thermal insulation layer.
3. polycrystalline silicon ingot casting mineral hot furnace as claimed in claim 2, it is characterized in that: described first thermal insulation layer is fire resistant heat preserving layer of fibers, described second thermal insulation layer is graphite carbon brick layer.
4. polycrystalline silicon ingot casting mineral hot furnace as claimed in claim 1, is characterized in that: the quantity of described electrode is 5 ~ 25.
5. polycrystalline silicon ingot casting mineral hot furnace as claimed in claim 4, it is characterized in that: the electrode at burner hearth center and the distance between described thermal insulation layer and the electrode of described burner hearth intersection, equal with the distance between thermal insulation layer and the adjacent electrode of burner hearth intersection.
6. polycrystalline silicon ingot casting mineral hot furnace as claimed in claim 4, is characterized in that: described electrode is Graphite Electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654404.2U CN204898121U (en) | 2015-08-27 | 2015-08-27 | Polycrystalline silicon ingot casting is with hot stove in ore deposit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520654404.2U CN204898121U (en) | 2015-08-27 | 2015-08-27 | Polycrystalline silicon ingot casting is with hot stove in ore deposit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204898121U true CN204898121U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520654404.2U Expired - Fee Related CN204898121U (en) | 2015-08-27 | 2015-08-27 | Polycrystalline silicon ingot casting is with hot stove in ore deposit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204898121U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311180A (en) * | 2017-05-25 | 2017-11-03 | 宁夏东梦能源股份有限公司 | The method that low borosilicate is prepared using mineral hot furnace |
-
2015
- 2015-08-27 CN CN201520654404.2U patent/CN204898121U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311180A (en) * | 2017-05-25 | 2017-11-03 | 宁夏东梦能源股份有限公司 | The method that low borosilicate is prepared using mineral hot furnace |
| CN107311180B (en) * | 2017-05-25 | 2019-06-28 | 宁夏东梦能源股份有限公司 | The method for preparing low borosilicate using mineral hot furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20180827 |