CN105289801A - Silica powder production method - Google Patents
Silica powder production method Download PDFInfo
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- CN105289801A CN105289801A CN201510909778.9A CN201510909778A CN105289801A CN 105289801 A CN105289801 A CN 105289801A CN 201510909778 A CN201510909778 A CN 201510909778A CN 105289801 A CN105289801 A CN 105289801A
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- silica flour
- production method
- silica powder
- silica
- crusher
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Abstract
The invention discloses a silica powder production method comprising the following steps: placing a silica block into a crusher, performing vacuumizing on a crusher system, or filling inertia protective gas after vacuumizing, starting the crusher for crushing the silica block, and screening silica powder obtained after crushing on a vibration screen so as to obtain a silica powder product. The silica powder produced by adopting the method disclosed in the invention has the advantages of being high in purity, uniformly in particle size distribution, good in dispersibility, high in activity, and the like; dangerous problems, such as burning and exploding, easily generated in a silica powder production process are solved, so that the production process is safe and reliable; the production method is simple and devices are wide in application range.
Description
Technical field
The invention belongs to powder technology field, be specifically related to a kind of production method of silica flour.
Background technology
Metallic silicon is by silica SiO
2+ 2C → Si+2CO
2↑, silicon obtained is like this thick silicon containing a small amount of impurity, also metallic silicon is, wherein Si accounts for 98%, Fe, Al, Ca, Zn, Cu, Ni, Sn, Pb, Mn, Ti etc. account for 2%, the outward appearance of metallic silicon is taupe and has metallic luster, hard and crisp silico briquette, metallic silicon power is also industrial silica fume, silico briquette is carried out the finished product silica flour that industrial processes is made, be classified as meal, fine powder, fine powder, micropowders, can be used for the primary raw materials such as high-temperature refractory, iron, aluminium alloy, Ludox, organosilicon.Be that raw material manufactures a finished product metallic silicon power with silico briquette, have multiple method.Effect is better, apply more: ball-milling method, roller mill method, punching revolve method etc., its capital equipment: ball mill, roller mill, punching revolve machine, in powder process, require it is distinguishing to reaching quality technology, first two extrudes milling under gravity to pulverize, and rear one is that impact is in small, broken bits.Polysilicon utilizes the raw materials such as silica flour, and after carrying out multiple chemical reaction, the result of output, can be drawn into monocrystalline silicon with polysilicon, is the electronics and information infrastructure material of the semiconductor devices such as contemporary artificial intelligence, automatically control, information processing, opto-electronic conversion.In prior art, to be not suitable for due to equipment or technological parameter such as not to adjust at the reason, the silica flour produced often is made to there is the shortcomings such as purity is low, size distribution is uneven, particle size is uncontrollable, thus affect the performance of the silicon materials goods adopting this silica flour to make, and silica flour is fine powder state, run into naked light in atmosphere can burn, there is serious burning, the danger of blast in process of production.
Summary of the invention
The object of this invention is to provide the production method of a kind of even particle size distribution, good dispersion, active high silica flour.
The technical scheme that the present invention realizes its object is: a kind of production method of silica flour; silico briquette is comprised the steps: to put into disintegrating machine; crusher system is vacuumized; or be filled with inert protective gas after vacuumizing; open disintegrating machine and fragmentation is carried out to silico briquette; the silica flour obtained after fragmentation is sieved on the vibrating, namely obtains silica flour product.
Described disintegrating machine is hammer mill.
Described inert protective gas is nitrogen.
The granularity of described silica flour product is 10 ~ 700 orders.
The invention has the beneficial effects as follows: the silica flour of production has that purity is high, even particle size distribution, good dispersion, active advantages of higher, and solve the dangerous problem that burning and blast easily occur in silica flour production process, make production process safe and reliable, and production method is simple, equipment is applied widely.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described, but not thereby limiting the invention.
Experimental technique in following embodiment, if no special instructions, is conventional method.
Embodiment 1
A kind of production method of silica flour, operate in accordance with the following steps: silico briquette is put into hammer mill, crusher system is vacuumized, open disintegrating machine and fragmentation is carried out to silico briquette, sieved on the vibrating by the silica flour obtained after fragmentation, namely obtaining granularity is 10 ~ 700 object silica flour products.
Embodiment 2
A kind of production method of silica flour, operate in accordance with the following steps: silico briquette is put into hammer mill, nitrogen is filled with after crusher system is vacuumized, open disintegrating machine and fragmentation is carried out to silico briquette, sieved on the vibrating by the silica flour obtained after fragmentation, namely obtaining granularity is 10 ~ 700 object silica flour products.
Embodiment 3
A kind of production method of silica flour, operate in accordance with the following steps: silico briquette is put into hammer mill, nitrogen is filled with after crusher system is vacuumized, open disintegrating machine and fragmentation is carried out to silico briquette, sieved on the vibrating by the silica flour obtained after fragmentation, namely obtaining granularity is 10 ~ 700 object silica flour products.
Claims (4)
1. the production method of a silica flour; it is characterized in that; silico briquette is comprised the steps: to put into disintegrating machine; crusher system is vacuumized; or be filled with inert protective gas after vacuumizing; open disintegrating machine and fragmentation is carried out to silico briquette, the silica flour obtained is sieved on the vibrating, namely obtain silica flour product after fragmentation.
2. the production method of silica flour as claimed in claim 1, it is characterized in that, described disintegrating machine is hammer mill.
3. the production method of silica flour as claimed in claim 1, it is characterized in that, described inert protective gas is nitrogen.
4. the production method of silica flour as claimed in claim 1, it is characterized in that, the granularity of described silica flour product is 10 ~ 700 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909778.9A CN105289801A (en) | 2015-12-10 | 2015-12-10 | Silica powder production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510909778.9A CN105289801A (en) | 2015-12-10 | 2015-12-10 | Silica powder production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105289801A true CN105289801A (en) | 2016-02-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510909778.9A Pending CN105289801A (en) | 2015-12-10 | 2015-12-10 | Silica powder production method |
Country Status (1)
| Country | Link |
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| CN (1) | CN105289801A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114798099A (en) * | 2022-04-28 | 2022-07-29 | 云南能投硅材科技发展有限公司 | Method for processing organosilicon silicon powder with stable particle size |
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| CN101161347A (en) * | 2006-10-13 | 2008-04-16 | 南京理工大学 | Bidirectional tosh grinding ultra-fine crashing objects and its method |
| CN102910630A (en) * | 2012-10-15 | 2013-02-06 | 江苏博迁光伏材料有限公司 | Production method of nano silicon powder |
| CN102951643A (en) * | 2012-10-15 | 2013-03-06 | 宁波广博纳米新材料股份有限公司 | Production method of nano-grade spherical silica powder |
| CN103386347A (en) * | 2013-07-31 | 2013-11-13 | 西安交通大学 | Low-temperature ball-milling experimental apparatus |
| CN104923370A (en) * | 2015-06-21 | 2015-09-23 | 合盛硅业股份有限公司 | Metal silicon powder production process and device |
-
2015
- 2015-12-10 CN CN201510909778.9A patent/CN105289801A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1515489A (en) * | 2003-01-07 | 2004-07-28 | 蓝星化工新材料股份有限公司江西星火 | Method for processing silicon powder and its system |
| CN101161347A (en) * | 2006-10-13 | 2008-04-16 | 南京理工大学 | Bidirectional tosh grinding ultra-fine crashing objects and its method |
| CN102910630A (en) * | 2012-10-15 | 2013-02-06 | 江苏博迁光伏材料有限公司 | Production method of nano silicon powder |
| CN102951643A (en) * | 2012-10-15 | 2013-03-06 | 宁波广博纳米新材料股份有限公司 | Production method of nano-grade spherical silica powder |
| CN103386347A (en) * | 2013-07-31 | 2013-11-13 | 西安交通大学 | Low-temperature ball-milling experimental apparatus |
| CN104923370A (en) * | 2015-06-21 | 2015-09-23 | 合盛硅业股份有限公司 | Metal silicon powder production process and device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114798099A (en) * | 2022-04-28 | 2022-07-29 | 云南能投硅材科技发展有限公司 | Method for processing organosilicon silicon powder with stable particle size |
| CN114798099B (en) * | 2022-04-28 | 2023-03-31 | 云南能投硅材科技发展有限公司 | Method for processing organosilicon silicon powder with stable particle size |
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Application publication date: 20160203 |