CN202038871U - Charging mechanism used for producing magnesium silicide - Google Patents
Charging mechanism used for producing magnesium silicide Download PDFInfo
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- CN202038871U CN202038871U CN2011201452135U CN201120145213U CN202038871U CN 202038871 U CN202038871 U CN 202038871U CN 2011201452135 U CN2011201452135 U CN 2011201452135U CN 201120145213 U CN201120145213 U CN 201120145213U CN 202038871 U CN202038871 U CN 202038871U
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- charging
- magnesium silicide
- charging mechanism
- loading hopper
- screw feeder
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Abstract
The utility model relates to a charging mechanism, in particular to a charging mechanism used for producing magnesium silicide, and the magnesium silicide is applied to semiconductor materials, special gas, microelectronics, solar batteries and ceramics. The charging mechanism comprises a charging hopper, a hand hole, a charging powder body valve, a screw charging device, a speed regulation motor and a charging port, wherein the hand hole is arranged at the upper part of the charging hopper, the charging powder body valve is arranged at the bottom of the charging hopper, the bottom end of the charging powder body valve is connected with the screw charging device, the end part of the screw charging device is connected with the charging port, and the screw charging device is driven by the speed regulation motor. The charging mechanism used for producing the magnesium silicide improves the product quality, and has a simple device structure and high controllability.
Description
Technical field
The utility model is a kind of charging mechanism, particularly a kind of charging mechanism that is used to produce magnesium silicide.
Background technology
Silane (SiH in the prior art
4), claim silicon tetrahydride again, be most important electronic gas, also be the unstripped gas of producing polysilicon, it has deep effect to fields such as microelectronics, photovoltaic, special cermacis, photoelectron, novel materials.At present, industry is produced silane and is mainly adopted catalytic disproportionation trichlorosilane method (UCC technology), lithium hydride reduction trichlorosilane method, sodium aluminum hydride (NaAlH
4) tetrafluoride reduced method, catalytic disproportionation Ethoxysilane and magnesium silicide method.Relative with other technologies, magnesium silicide method is advantages such as investment is little, technology simple, raw material is easy to get, the monopolization of inscience property right because of having, and are extensively adopted by domestic production manufacturer.Particularly in recent years along with the rise of photovoltaic industry, the demand to high purity silane and polysilicon increases day by day both at home and abroad, improves the research direction that becomes domestic all multiple enterprises with the development magnesium silicide method.(chemical formula is Mg to magnesium silicide
2Si), the development of magnesium silicide method had decisive meaning as one of magnesium silicide method most important material and technical bottleneck.Exploitation is efficient, continuously, the synthetic technology of safety and low consumption is the important development direction that magnesium silicide is produced.
The synthetic method of tradition magnesium silicide is that silica flour and magnesium powder are mixed in proportion, and puts into the intermittent type fixed bed, is being heated to about 500～650 ℃ under argon gas, nitrogen atmosphere or the vacuum, and it is reacted, synthesizing magnesium silicide, and chemical equation is:
2Mg?+?Si→?Mg
2Si?+?77.4?kJ/mol
Owing to when generating magnesium silicide, produce a large amount of heats, this makes when adopting the fixed bed device synthesizing magnesium silicide, run into serious material problems of excessive heat, be that the material reaction heat release causes localized hyperthermia, material at high temperature causes a series of problems such as magnesium evaporation, caking, magnesium silicide decompose, composition departs from.Simultaneously, fixed bed process is the mode of production of interval type normally, and it comprises charging, heats, is incubated, cools off and gets processes such as material, has fatal shortcomings such as production efficiency is lower, danger is high, energy consumption is big, the product caking is serious.
Relative gap bed process, continuous reaction process can better be controlled the inventory of reaction process and control participation reaction, and it is overheated to be difficult for causing.Simultaneously, the mode that continuous reaction process generally adopts the limit coronite to stir can prevent powder agglomeration, and homogeneous material and heat are beneficial to synthetic high-quality magnesium silicide.Therefore, continuous reaction process is the developing direction of large-scale production magnesium silicide.
The utility model content
The utility model mainly is to solve the deficiencies in the prior art, and a kind of charging mechanism that is used to produce magnesium silicide that guarantees the quality of product is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
A kind of charging mechanism that is used to produce magnesium silicide, charging mechanism comprises loading hopper, hand hole, reinforced powder valve, screw feeder, buncher and charging opening, the top of described loading hopper is provided with hand hole, the bottom of described loading hopper is reinforced powder valve, the bottom of described reinforced powder valve connects screw feeder, the end of described screw feeder connects charging opening, and described screw feeder drives mutually by buncher.
Charging mechanism is used for adding magnesium powder and silica flour, and charging mechanism can strictly be controlled added amount, by screw feeder, makes powder more even simultaneously, and more refinement obtains better effect when reaction.
As preferably, the top of described loading hopper is provided with reinforced visor, and described reinforced visor is located at a side of hand hole.
As preferably, described screw feeder comprises turning axle and screw rod, and described turning axle is connected with buncher, and described turning axle is provided with screw rod.
As preferably, the lower end of described loading hopper is a back taper.
Therefore, the charging mechanism that is used to produce magnesium silicide that the utility model provides promotes quality product, and device structure is simple, the controllability height.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: as shown in Figure 1, a kind of charging mechanism that is used to produce magnesium silicide, charging mechanism comprises loading hopper 1, hand hole 2, reinforced powder valve 3, screw feeder 4, buncher 5 and charging opening 6, the top of described loading hopper 1 is provided with hand hole 2, the bottom of described loading hopper 1 is reinforced powder valve 3, the bottom of described reinforced powder valve 3 connects screw feeder 4, the end of described screw feeder 4 connects charging opening 6, described screw feeder 4 drives mutually by buncher 5, the top of described loading hopper 1 is provided with reinforced visor 7, described reinforced visor 7 is located at a side of hand hole 2, described screw feeder 4 comprises turning axle 8 and screw rod 9, described turning axle 8 is connected with buncher 5, and described turning axle 8 is provided with screw rod 9, and the lower end of described loading hopper 1 is a back taper.
Claims (4)
1. charging mechanism that is used to produce magnesium silicide, it is characterized in that: charging mechanism comprises loading hopper (1), hand hole (2), reinforced powder valve (3), screw feeder (4), buncher (5) and charging opening (6), the top of described loading hopper (1) is provided with hand hole (2), the bottom of described loading hopper (1) is reinforced powder valve (3), the bottom of described reinforced powder valve (3) connects screw feeder (4), the end of described screw feeder (4) connects charging opening (6), and described screw feeder (4) drives mutually by buncher (5).
2. the charging mechanism that is used to produce magnesium silicide according to claim 1 is characterized in that: the top of described loading hopper (1) is provided with reinforced visor (7), and described reinforced visor (7) is located at a side of hand hole (2).
3. the charging mechanism that is used to produce magnesium silicide according to claim 1 and 2, it is characterized in that: described screw feeder (4) comprises turning axle (8) and screw rod (9), described turning axle (8) is connected with buncher (5), and described turning axle (8) is provided with screw rod (9).
4. the charging mechanism that is used to produce magnesium silicide according to claim 1 and 2 is characterized in that: the lower end of described loading hopper (1) is a back taper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201452135U CN202038871U (en) | 2011-05-10 | 2011-05-10 | Charging mechanism used for producing magnesium silicide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201452135U CN202038871U (en) | 2011-05-10 | 2011-05-10 | Charging mechanism used for producing magnesium silicide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202038871U true CN202038871U (en) | 2011-11-16 |
Family
ID=44966328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201452135U Expired - Fee Related CN202038871U (en) | 2011-05-10 | 2011-05-10 | Charging mechanism used for producing magnesium silicide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202038871U (en) |
-
2011
- 2011-05-10 CN CN2011201452135U patent/CN202038871U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111116 Termination date: 20140510 |