CN109384242A - A kind of production method of ultra-fine vitreous silica silicon powder - Google Patents
A kind of production method of ultra-fine vitreous silica silicon powder Download PDFInfo
- Publication number
- CN109384242A CN109384242A CN201710662110.8A CN201710662110A CN109384242A CN 109384242 A CN109384242 A CN 109384242A CN 201710662110 A CN201710662110 A CN 201710662110A CN 109384242 A CN109384242 A CN 109384242A
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- vitreous silica
- silicon powder
- ultra
- fine
- grinding
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a kind of production method of ultra-fine vitreous silica silicon powder, which belongs to quartzy finishing field；The present invention is using high-quality high purity quartz block as raw material, ultra-fine vitreous silica silicon powder is produced by techniques such as broken, magnetic separation, level-one common grinding, level-one extra-fine grinding, classifications, the production method include simple production process, production cost it is low, without sewage exhaust gas discharge, can be mass out ultra-fine vitreous silica silicon powder, product mainly uses large scale integrated circuit.
Description
Technical field
The invention belongs to quartz finishing field more particularly to a kind of production methods of ultra-fine vitreous silica silicon powder.
Background technique
Vitreous silica is the amorphous state of silica, and the content of silica must not be less than 99.8%, and when production will be smart
The natural stone diamond stone of choosing is melted in furnace high-temperature, and melting temperature is 1800 DEG C -1900 DEG C, becomes molten after about 12 hours melting times
Melt state, become solid-state vitreous silica after cooling, vitreous silica have using temperature is high, thermal expansion coefficient is low, wear-resisting property is good,
The series of advantages such as hardness is high, light transparent refractive is good, piezoelectric property is excellent.The product of vitreous silica has: various specifications and difference
Tekite sand, vitreous silica block and the vitreous silica silicon powder of purposes.Vitreous silica silicon powder is by tekite diamond stone through broken
The silicon powder that the multiple tracks technique such as broken, magnetic separation, grinding, classification is process is a kind of nontoxic, tasteless, free of contamination inorganic non-gold
Belong to material, ultra-fine melting silicon powder is a kind of melting silicon powder of the granularity less than 1.5 microns, in production more compared with granularity because of it
Carefully, production difficulty increases the country before 2015 and is not possible to produce, until after the nano level superfine to the German production of import is ground
It can be just that silicon powder granularity reaches under 1.5 microns.The present invention is a kind of ultra-fine vitreous silica silicon powder, and silica contains
Amount 99.99% or more, granularity at 1.5 microns hereinafter, the product system selects high-purity natural quartz, through high melt, it is cooling after shape
At vitreous silica block carry out a common grinding, once through the micro mist that is process of nano level superfine mill grinding, there is purity
It is high, thermal expansion coefficient is small, low-activity, it is resistant to chemical etching the advantages that, appearance is white powder, bulk density is 200-230 kilograms/
Cubic meter, is mainly used for super large-scale integration.The present invention passes through broken, magnetic separation, one using high-quality high purity quartz block as raw material
The techniques such as grade common grinding, the grinding of level-one nano level superfine mill, classification are process, and the major advantage of the process flow is: work
The nano level superfine vitreous silica that skill is simple, discharges without toxic and harmful gas and liquid, can be mass and produce high quality
Silicon powder.
Summary of the invention
Present invention mainly solves the problem of be to provide the production method of ultra-fine vitreous silica silicon powder a kind of, this method is with excellent
Matter high purity quartz block is raw material, super to produce by techniques such as broken, magnetic separation, level-one common grinding, level-one extra-fine grinding, classifications
Thin vitreous silica silicon powder.
The present invention can be achieved through the following technical solutions:
(1) high-quality high purity quartz block is sent into broken crusher machine, obtains tekite sand of the diameter less than 3 millimeters.
(2) tekite sand is sent into magnetic separator, will be divided containing magnetic, the tekite sand containing metal and metal oxide
It leaves away and removes, the magnetic separation time is 0.3-0.4 hours.
(3) the tekite sand after magnetic separation is sent to common grinding machine to grind, controls the charging and discharging of grinder
Speed is balanced, and keeping milling time is 2.5-3.0 hours.
(4) powder after the grinding of first order grinder send to nano level superfine mill and is ground, milling time 4.5-
5.0 hours, vibrating screen is sent to be sieved after grinding, granularity is more than that 1.5 microns of return nano level superfine mill repeats to grind, granularity
Discharging packaging lower than 1.5 microns.
Preferably, the granularity of the ultra-fine vitreous silica silicon powder is 1.5 microns or less.
The beneficial effects of the present invention are: providing a kind of production method of ultra-fine vitreous silica silicon powder, the production method
Include simple production process, production cost it is low, without sewage exhaust gas discharge, can be mass out nano level superfine vitreous silica silicon
Micro mist, product mainly use large scale integrated circuit.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail.
Embodiment 1
High-quality high purity quartz block is sent into broken crusher machine, obtains tekite sand of the diameter less than 3 millimeters；By tekite sand
It is sent into magnetic separator, separation removal will be carried out containing magnetic, the tekite sand containing metal and metal oxide, the magnetic separation time is 0.3 small
When；Tekite sand after magnetic separation is sent to grinder to grind, charging and the discharging speed for controlling grinder are balanced, keep
Milling time is 2.5 hours；Powder after the grinding of first order grinder send to nano level superfine mill and is ground, milling time
It is 4.5 hours, send vibrating screen to be sieved after grinding, granularity is more than that 1.5 microns of return nano level superfine mill repeats to grind, grain
Discharging of the degree lower than 1.5 microns is packed.
Embodiment 2
High-quality high purity quartz block is sent into broken crusher machine, obtains tekite sand of the diameter less than 3 millimeters；By tekite sand
It is sent into magnetic separator, separation removal will be carried out containing magnetic, the tekite sand containing metal and metal oxide, the magnetic separation time is 0.35 small
When；Tekite sand after magnetic separation is sent to grinder to grind, charging and the discharging speed for controlling grinder are balanced, keep
Milling time is 2.75 hours；Powder after the grinding of first order grinder send to nano level superfine mill and is ground, when grinding
Between be 4.75 hours, send vibrating screen to be sieved after grinding, granularity be more than 1.5 microns return nano level superfine mill repeatedly grind
Mill, discharging of the granularity lower than 1.5 microns are packed.
Embodiment 3
High-quality high purity quartz block will be sent into broken crusher machine, obtain tekite sand of the diameter less than 3 millimeters；By vitreous silica
Sand is sent into magnetic separator, will carry out separation removal containing magnetic, the tekite sand containing metal and metal oxide, the magnetic separation time is 0.4
Hour；Tekite sand after magnetic separation is sent to grinder to grind, charging and the discharging speed for controlling grinder are balanced, protect
Holding milling time is 3.0 hours；Powder after the grinding of first order grinder send to nano level superfine mill and is ground, when grinding
Between be 5.0 hours, send vibrating screen to be sieved after grinding, granularity be more than 1.5 microns return nano level superfine mill repeat grinding,
Discharging of the granularity lower than 1.5 microns is packed.
Claims (2)
1. a kind of production method of ultra-fine vitreous silica silicon powder, this method using high-quality high purity quartz block as raw material, by it is broken,
The techniques such as magnetic separation, level-one common grinding, level-one extra-fine grinding, classification produce nano level superfine vitreous silica silicon powder, special
Sign is:
(1) high-quality high purity quartz block is sent into broken crusher machine, obtains tekite sand of the diameter less than 3 millimeters；
(2) tekite sand is sent into magnetic separator, will be separated containing magnetic, the tekite sand containing metal and metal oxide
It removes, the magnetic separation time is 0.3-0.4 hours；
(3) the tekite sand after magnetic separation grinder being sent to grind, charging and the discharging speed for controlling grinder are balanced,
Keeping milling time is 2.5-3.0 hours；
(4) powder after the grinding of first order grinder send to nano level superfine mill and is ground, and milling time is that 4.5-5.0 is small
When, send vibrating screen to be sieved after grinding, granularity is more than that 1.5 microns of return nano level superfine mill repeats to grind, and granularity is lower than
1.5 microns of discharging packaging.
2. the production method of a kind of ultra-fine vitreous silica silicon powder according to claim 1, it is characterized in that: described is ultra-fine
The granularity of vitreous silica silicon powder is 1.5 microns or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662110.8A CN109384242A (en) | 2017-08-04 | 2017-08-04 | A kind of production method of ultra-fine vitreous silica silicon powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662110.8A CN109384242A (en) | 2017-08-04 | 2017-08-04 | A kind of production method of ultra-fine vitreous silica silicon powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109384242A true CN109384242A (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710662110.8A Pending CN109384242A (en) | 2017-08-04 | 2017-08-04 | A kind of production method of ultra-fine vitreous silica silicon powder |
Country Status (1)
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| CN (1) | CN109384242A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510619A (en) * | 2019-09-11 | 2019-11-29 | 江苏凯达石英股份有限公司 | The preparation method of active superfine vitreous silica SILICA FUME |
-
2017
- 2017-08-04 CN CN201710662110.8A patent/CN109384242A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110510619A (en) * | 2019-09-11 | 2019-11-29 | 江苏凯达石英股份有限公司 | The preparation method of active superfine vitreous silica SILICA FUME |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190226 |
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| WD01 | Invention patent application deemed withdrawn after publication |