CN110386608A - A kind of preparation method of lightweight preparing spherical SiO 2 - Google Patents
A kind of preparation method of lightweight preparing spherical SiO 2 Download PDFInfo
- Publication number
- CN110386608A CN110386608A CN201910754709.3A CN201910754709A CN110386608A CN 110386608 A CN110386608 A CN 110386608A CN 201910754709 A CN201910754709 A CN 201910754709A CN 110386608 A CN110386608 A CN 110386608A
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- preparation
- lightweight
- spherical sio
- preparing spherical
- specific gravity
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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
- C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
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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
- C01P2004/01—Particle morphology depicted by an image
- C01P2004/03—Particle morphology depicted by an image obtained by SEM
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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
- C01P2004/30—Particle morphology extending in three dimensions
- C01P2004/32—Spheres
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/10—Solid density
Abstract
The invention discloses a kind of preparation methods of lightweight preparing spherical SiO 2, are related to technical field of inorganic material, screen the quartzy miberal powder of the inclusion enclave containing full stream of fluid, screen out specific gravity less than 1.8g/cm3Silica flour as raw material, raw material is crushed, smashed raw material is passed through flash burning furnace with inert gas carrier, in nodularization flame region by airflow circulating, by adjusting air flow pressure, specific gravity is lower than 1.5g/cm3Powder enter dust chamber collection, obtain spherical hole closed silica；Preparation method technical process of the invention is simple, the preparing spherical SiO 2 prepared has the characteristics that specific gravity is low, intensity is high, specific surface area is low, oil factor is low, sphericity is high, the fields such as high-frequency high-speed copper-clad plate can be used for 5G communication by as low-k and low-dielectric loss material.
Description
Technical field:
The present invention relates to technical field of inorganic material, and in particular to a kind of preparation method of lightweight preparing spherical SiO 2.
Background technique:
The performance stabilization of silica, rich content, promote it to be widely used in every field, in addition hollow knot
The excellent structural performance of structure, more extends the application field of silica.Lightweight sphere material is a kind of new inorganic material,
It is widely used in copper-clad plate, casting glue, automobile plastic, coating, paint, is insulated the materials such as heat-insulated.
There are mainly two types of the products of form for lightweight preparing spherical SiO 2 at present: hollow glass micropearl and porous silica.
Hollow glass micropearl complicated component, and intensity is inadequate, when being applied to copper-clad plate, is easy layering, and easily leave semicircle after drilling
Shape defect, influences plate property.For porous silica due to large specific surface area, oil factor is high, is difficult to be added in application system,
High processing viscosity can be greatly proposed, the physical property of product is reduced.
Summary of the invention:
Technical problem to be solved by the present invention lies in provide a kind of preparation method of lightweight preparing spherical SiO 2, the method
The features such as preparing spherical SiO 2 prepared has specific gravity low, and intensity is high, and specific surface area is low, and oil factor is low, and sphericity is high.
The following technical solution is employed for the technical problems to be solved by the invention to realize:
A kind of preparation method of lightweight preparing spherical SiO 2, comprising the following steps:
(1) the quartzy miberal powder for screening the inclusion enclave containing full stream of fluid screens out specific gravity less than 1.8g/cm3Silica flour conduct
Raw material；
(2) raw material is crushed to partial size D502~30 μm；
(3) smashed raw material is passed through flash burning furnace with inert gas carrier, passes through airflow circulating in nodularization flame region；
(4) by adjusting air flow pressure, specific gravity is lower than 1.5g/cm3Powder enter dust chamber collection；
(5) powder is collected, and obtaining specific gravity is 0.5-1.5g/cm3Spherical hole closed silica.
The screening with heavy-fluid classification by realizing.
The temperature of the flash burning furnace is higher than 1600 DEG C.
The nodularization flame region makes powder form circulation by setting nozzle.
The inert gas is argon gas.
In calcination process, the liquid phase in inclusion enclave can volatilize, and powder specific gravity further decreases.
The raw material that the present invention uses is the quartzy powder containing full stream of fluid inclusion enclave, and fluid inclusion means mineral growth
In the process, because of defect occurs for crystal still existing in mineral so far and in closed state at mine medium, content of capturing
And form it is more be quartz.Fluid inclusion in quartz has a various existence forms, including pure liquid phase, pure gas phase,
Rich solution phase, rich gas phase, phase containing daughter mineral, CO containing liquid2Multiphase, multiphase containing organic matter etc..
The beneficial effects of the present invention are: preparation method technical process of the invention is simple, the preparing spherical SiO 2 prepared
Have the characteristics that specific gravity is low, intensity is high, specific surface area is low, oil factor is low, sphericity is high, it can be by as low-k and low
Dielectric loss material, for fields such as 5G communication high-frequency high-speed copper-clad plates.
Detailed description of the invention:
Fig. 1 is that the SEM of 1 products made thereby of embodiment schemes.
Specific embodiment:
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment and diagram are closed, the present invention is further explained.
Embodiment 1
The history of forming for sufficiently investigating quartz mine, filters out the quartzy miberal powder of the inclusion enclave containing full stream of fluid, using with heavy-fluid
Classification filters out specific gravity less than 1.8g/cm3Silica flour；Raw material is crushed to partial size D502~30 μm；The powder that will be filtered out
Argon gas is used to be passed through flash burning furnace as carrier gas, the control of flash burning furnace high-temperature area temperature is 1700 DEG C, designs four sprays in high-temperature area
Mouth is mutually blown, and is formed powder in high-temperature area and is recycled, smoulder 30min；Stopping calcining, control air flow pressure is 0.4MPa, it gathers dust,
Up to product spherical hole closed silica.
The operation of embodiment 2 and embodiment 3 is the same as embodiment 1.
The raw material and product specific gravity data of embodiment 1-3 is as shown in table 1.
Table 1
As shown in Figure 1, the specific gravity of products made thereby is small, and sphericity is high, and pattern is uniform.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of preparation method of lightweight preparing spherical SiO 2, which comprises the following steps:
(1) the quartzy miberal powder for screening the inclusion enclave containing full stream of fluid screens out specific gravity less than 1.8g/cm3Silica flour as raw material；
(2) raw material is crushed to partial size D502~30 μm；
(3) smashed raw material is passed through flash burning furnace with inert gas carrier, passes through airflow circulating in nodularization flame region；
(4) by adjusting air flow pressure, specific gravity is lower than 1.5g/cm3Powder enter dust chamber collection；
(5) powder is collected, and obtaining specific gravity is 0.5-1.5g/cm3Spherical hole closed silica.
2. the preparation method of lightweight preparing spherical SiO 2 according to claim 1, it is characterised in that: the screening is by matching
Heavy-fluid classification is realized.
3. the preparation method of lightweight preparing spherical SiO 2 according to claim 1, it is characterised in that: the temperature of the flash burning furnace
Degree is higher than 1600 DEG C.
4. the preparation method of lightweight preparing spherical SiO 2 according to claim 1, it is characterised in that: the nodularization flame zone
Domain makes powder form circulation by setting nozzle.
5. the preparation method of lightweight preparing spherical SiO 2 according to claim 1, it is characterised in that: the inert gas is
Argon gas.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910754709.3A CN110386608B (en) | 2019-08-15 | 2019-08-15 | Preparation method of light spherical silicon dioxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910754709.3A CN110386608B (en) | 2019-08-15 | 2019-08-15 | Preparation method of light spherical silicon dioxide |
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| Publication Number | Publication Date |
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| CN110386608A true CN110386608A (en) | 2019-10-29 |
| CN110386608B CN110386608B (en) | 2020-06-26 |
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| CN201910754709.3A Active CN110386608B (en) | 2019-08-15 | 2019-08-15 | Preparation method of light spherical silicon dioxide |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804128A (en) * | 2022-04-18 | 2022-07-29 | 安徽壹石通材料科技股份有限公司 | Spherical silicon dioxide treatment method |
| WO2023206886A1 (en) * | 2022-04-25 | 2023-11-02 | 江苏联瑞新材料股份有限公司 | Method for preparing spherical silicon dioxide micro powder with ultra-low dielectric loss |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553346A (en) * | 2013-09-30 | 2014-02-05 | 深圳大学 | Preparation method of spherical glass powder for electronic paste |
| CN107055554A (en) * | 2017-05-23 | 2017-08-18 | 中南冶金地质研究所 | A kind of method that use flame method prepares nanometer spherical silicon powder |
-
2019
- 2019-08-15 CN CN201910754709.3A patent/CN110386608B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103553346A (en) * | 2013-09-30 | 2014-02-05 | 深圳大学 | Preparation method of spherical glass powder for electronic paste |
| CN107055554A (en) * | 2017-05-23 | 2017-08-18 | 中南冶金地质研究所 | A kind of method that use flame method prepares nanometer spherical silicon powder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804128A (en) * | 2022-04-18 | 2022-07-29 | 安徽壹石通材料科技股份有限公司 | Spherical silicon dioxide treatment method |
| CN114804128B (en) * | 2022-04-18 | 2023-08-29 | 蚌埠壹石通电子通信材料有限公司 | Spherical silicon dioxide treatment method |
| WO2023206886A1 (en) * | 2022-04-25 | 2023-11-02 | 江苏联瑞新材料股份有限公司 | Method for preparing spherical silicon dioxide micro powder with ultra-low dielectric loss |
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| CN110386608B (en) | 2020-06-26 |
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