CN109384241A - A kind of production method of active superfine vitreous silica silicon powder - Google Patents
A kind of production method of active superfine vitreous silica silicon powder Download PDFInfo
- Publication number
- CN109384241A CN109384241A CN201710662077.9A CN201710662077A CN109384241A CN 109384241 A CN109384241 A CN 109384241A CN 201710662077 A CN201710662077 A CN 201710662077A CN 109384241 A CN109384241 A CN 109384241A
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- CN
- China
- Prior art keywords
- silicon powder
- vitreous silica
- superfine
- sent
- silica silicon
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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
-
- 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
Abstract
The invention discloses a kind of production method of active superfine vitreous silica silicon powder, which belongs to quartzy finishing field；The present invention is using high-quality high purity quartz block and active liquid as raw material, produce active superfine vitreous silica silicon powder by techniques such as broken, magnetic separation, level-one common grinding, level-one extra-fine grinding, classification, activations, the production method include simple production process, production cost it is low, without the discharge of sewage exhaust gas, can be mass out active superfine vitreous silica silicon powder.
Description
Technical field
The invention belongs to quartz finishing field more particularly to a kind of producers of active superfine vitreous silica silicon powder
Method.
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.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
Just silicon powder granularity can be made to reach under 1.5 microns.The present invention is a kind of active superfine vitreous silica silicon powder, silica
Content 99.99% or more, granularity at 1.5 microns hereinafter, the product system selects high-purity natural quartz, it is cooling through high melt
The micro mist that the vitreous silica block formed afterwards carries out a common grinding, is once process through nano level superfine mill grinding, has
Purity is high, thermal expansion coefficient is small, low-activity, it is resistant to chemical etching the advantages that, appearance is white powder, bulk density 200-230
Kilograms per cubic meter.Ultra-fine vitreous silica silicon powder is increased activation technique by the present invention, after increasing activation technique, activated silica
Micro mist easily fusing, time in glass processed production is short, the physicochemical property of products such as product such as borosilicate laboratory glass wares, neutral vessel and outer
Appearance quality reaches respective standard, and energy-saving effect is significant；The major advantage of the process flow is: simple process has without toxic
The active superfine vitreous silica silicon powder that evil gas and liquid discharge, can be mass and produce high quality.
Summary of the invention
Present invention mainly solves the problem of be to provide the production method of active superfine vitreous silica silicon powder a kind of, this method
Using high-quality high purity quartz block and active liquid as raw material, by broken, magnetic separation, level-one common grinding, level-one extra-fine grinding, classification,
The techniques such as activation produce active superfine 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
High-speed mixer is sent into discharging lower than 1.5 microns.
(5) by ultra-fine vitreous silica silicon powder be sent into high-speed mixer, adjust high-speed mixer revolving speed be 890-900 turn/
Point, when mixing time warms naturally to 90 DEG C with silicon powder, the active liquid of formula ratio is sent into high-speed mixer at this time, is continued high
Speed stirring 0.5-0.6 hour, be sufficiently mixed active liquid with silicon powder, when temperature reaches 130 DEG C, stop stir, allow its certainly
It so is cooled to room temperature, obtains active superfine vitreous silica silicon powder.
Preferably, the granularity of the active superfine 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 active superfine 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 active superfine vitreous silica
Silicon powder.
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
High-speed mixer is sent into discharging of the degree lower than 1.5 microns；Ultra-fine vitreous silica silicon powder is sent into high-speed mixer, adjusts high-speed stirring
The revolving speed for mixing machine is 890 revs/min, when mixing time warms naturally to 90 DEG C with silicon powder, is at this time sent the active liquid of formula ratio
Enter high-speed mixer, continues high-speed stirred 0.6 hour, be sufficiently mixed active liquid with silicon powder, when temperature reaches 130 DEG C,
Stop stirring, allows it to be naturally cooling to room temperature, obtain active superfine vitreous silica silicon powder.
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, granularity are lower than 1.5 microns of discharging high-speed mixer；Ultra-fine vitreous silica silicon powder is sent into high-speed mixer, speed is turned up
The revolving speed of blender is 895 revs/min, when mixing time warms naturally to 90 DEG C with silicon powder, at this time by the active liquid of formula ratio
It is sent into high-speed mixer, continues high-speed stirred 0.55 hour, is sufficiently mixed active liquid with silicon powder, when temperature reaches 130 DEG C
When, stop stirring, allows it to be naturally cooling to room temperature, obtain active superfine vitreous silica silicon powder.
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,
Granularity is lower than 1.5 microns of discharging high-speed mixer；Ultra-fine vitreous silica silicon powder is sent into high-speed mixer, adjusts high-speed stirred
The revolving speed of machine is 900 revs/min, when mixing time warms naturally to 90 DEG C with silicon powder, is at this time sent into the active liquid of formula ratio
High-speed mixer continues high-speed stirred 0.5 hour, is sufficiently mixed active liquid with silicon powder, when temperature reaches 130 DEG C, stops
It only stirs, it is allowed to be naturally cooling to room temperature, obtain active superfine vitreous silica silicon powder.
Claims (2)
1. a kind of production method of active superfine vitreous silica silicon powder, this method pass through using high-quality high purity quartz block as raw material
The techniques such as broken, magnetic separation, level-one common grinding, level-one extra-fine grinding, classification produce nano level superfine vitreous silica silicon powder,
It is characterized in that:
(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 is sent to common grinding machine to grind, controls charging and the discharging speed of grinder
Equilibrium, 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
High-speed mixer is sent into 1.5 microns of discharging；
(5) ultra-fine vitreous silica silicon powder is sent into high-speed mixer, adjusting the revolving speed of high-speed mixer is 890-900 revs/min, is stirred
When mixing the time and warming naturally to 90 DEG C with silicon powder, the active liquid of formula ratio is sent into high-speed mixer at this time, continues high-speed stirring
It mixes 0.5-0.6 hours, is sufficiently mixed active liquid with silicon powder, when temperature reaches 130 DEG C, stop stirring, it is allowed to drop naturally
Temperature obtains active superfine vitreous silica silicon powder to room temperature.
2. the production method of a kind of active superfine vitreous silica silicon powder according to claim 1, it is characterized in that: described
The granularity of active superfine vitreous silica silicon powder is 1.5 microns or less.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662077.9A CN109384241A (en) | 2017-08-04 | 2017-08-04 | A kind of production method of active superfine vitreous silica silicon powder |
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| CN201710662077.9A CN109384241A (en) | 2017-08-04 | 2017-08-04 | A kind of production method of active superfine vitreous silica silicon powder |
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| CN109384241A true CN109384241A (en) | 2019-02-26 |
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Cited By (2)
| 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 |
| CN112029381A (en) * | 2020-09-09 | 2020-12-04 | 溧阳市永新绝缘粉末有限公司 | Insulating powder with good flexibility and mechanical impact resistance, preparation method and application method |
-
2017
- 2017-08-04 CN CN201710662077.9A patent/CN109384241A/en active Pending
Cited By (2)
| 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 |
| CN112029381A (en) * | 2020-09-09 | 2020-12-04 | 溧阳市永新绝缘粉末有限公司 | Insulating powder with good flexibility and mechanical impact resistance, preparation method and application method |
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Application publication date: 20190226 |