CN116768484A - Method for preparing high-refractive-index reflective glass beads from glass dust removal powder - Google Patents
Method for preparing high-refractive-index reflective glass beads from glass dust removal powder Download PDFInfo
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- CN116768484A CN116768484A CN202310766569.8A CN202310766569A CN116768484A CN 116768484 A CN116768484 A CN 116768484A CN 202310766569 A CN202310766569 A CN 202310766569A CN 116768484 A CN116768484 A CN 116768484A
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- dust removal
- granulated powder
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- 239000000843 powder Substances 0.000 title claims abstract description 120
- 239000011521 glass Substances 0.000 title claims abstract description 91
- 239000011324 bead Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000428 dust Substances 0.000 title claims abstract description 26
- 239000002245 particle Substances 0.000 claims abstract description 34
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 238000005245 sintering Methods 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 238000007873 sieving Methods 0.000 claims abstract description 11
- 239000003292 glue Substances 0.000 claims abstract description 10
- 229920001971 elastomer Polymers 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 11
- 239000002518 antifoaming agent Substances 0.000 claims description 10
- 238000005469 granulation Methods 0.000 claims description 10
- 230000003179 granulation Effects 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 239000003093 cationic surfactant Substances 0.000 claims description 8
- 229920000570 polyether Polymers 0.000 claims description 8
- 229920005749 polyurethane resin Polymers 0.000 claims description 6
- 239000000080 wetting agent Substances 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 230000002277 temperature effect Effects 0.000 claims description 5
- 239000004925 Acrylic resin Substances 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000003945 anionic surfactant Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000010285 flame spraying Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000011246 composite particle Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 238000010304 firing Methods 0.000 claims 2
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000004071 soot Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000013530 defoamer Substances 0.000 description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 239000004005 microsphere Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
- C03C12/02—Reflective beads
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/10—Forming beads
- C03B19/1005—Forming solid beads
Abstract
The invention discloses a method for preparing high-refractive-index reflective glass beads by using glass dust removal powder, which comprises the following specific steps: 1) Preparing glass dust removal powder slurry; 2) Granulating dust removal powder slurry; 3) Sieving granulating powder; 4) Rubber discharging treatment of the granulating powder; 5) And sintering the granulated powder into beads. According to the method, 25-30% of glass dust removal powder waste with the average particle size of 8 microns is directly granulated into particles with the particle size of 40-70 microns, and sintered into qualified glass bead products, so that the qualified yield of the glass bead products is improved by 20-25%, the production energy consumption of the products is reduced, and the yield of the glass bead mass-market particle size sections is increased. Meanwhile, the reasonable glue discharging treatment process of the method avoids the occurrence of bubbles and cracks after sintering before sintering the granulated powder, thereby ensuring the stability of the product quality of the glass beads.
Description
Technical Field
The invention belongs to the technical field of glass beads, and particularly relates to a method for preparing high-refractive-index reflective glass beads by using glass dust removal powder.
Background
The glass microsphere is a novel material with wide application and special performance developed in recent years, is a hollow glass sphere with tiny size, and belongs to an inorganic nonmetallic material. The glass beads with high refractive index are used for reflective cloth and reflective film, the application particle size is strict, the particle size is generally 30-90 microns, the particle size is 50-70 microns, and the glass beads are the best market, and account for more than 50-60% of the sales proportion. The production process flow of the high refractive index reflective glass beads comprises the steps of oxide melting reaction, water quenching of glass melt, crushing and spheroidizing of water quenching materials, wherein the crushing is a main link for controlling the particle size range of the glass beads. However, the existing crushing production process with particle size control has lower yield, the effective particle size is 30-90 micrometers, the yield is 65-70%, the rest is glass dust removal powder, the average particle size is 8 micrometers, the existing process is used for intelligently treating the glass dust removal powder, namely, the glass dust removal powder is recycled by melting the glass dust removal powder in a melting furnace, and the production cost is increased sharply due to recycling of the glass dust removal powder in the melting furnace. Meanwhile, the particle size distribution of the glass granulated powder produced by the existing granulating production process is wider and is 10-200 microns, the glue discharging treatment process is simple, and defects such as bubbles and cracks after sintering are more influencing the product quality.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for preparing high-refractive-index reflective glass beads by using glass dust-removing powder, which is characterized in that the glass dust-removing powder is directly granulated to 40-70 microns in particle size by a granulating process and then sintered into the glass beads, and meanwhile, the occurrence of bubbles and cracks after sintering can be avoided, and the stability of the quality of the glass beads is ensured.
A method for preparing high-refractive-index reflective glass beads by using glass dust removal powder comprises the following specific steps:
1) Preparing glass dust-removing powder slurry, namely adding deionized water, a binder, a defoaming agent and a wetting agent into the glass dust-removing powder to prepare the dust-removing powder slurry for granulation;
2) Granulating the dust-removing powder slurry, and granulating the dust-removing powder slurry by a granulator to obtain granulated powder;
3) Sieving the granulated powder, sieving the granulated powder by a sieving machine, and re-dissolving the granulated powder with unqualified particle size into slurry after the step 1);
4) Performing rubber discharging treatment on the granulating powder, and performing rubber discharging treatment on the granulating powder with the composite particle size;
5) Sintering the granulated powder into beads, and sintering the granulated powder after glue discharge into qualified high-refractive-index reflective glass beads through high-temperature flame spraying.
Preferably, the glass dust removal powder slurry in the step 1) is prepared from, by weight, 50-60 parts of glass dust removal powder, 42-50 parts of deionized water, 4-8 parts of a binder, 0.1-0.3 part of a defoaming agent and 0.5-0.7 part of a wetting agent.
Preferably, the binder in the step 1) is any one or a mixture of a plurality of modified polypropylene alcohol resins, aqueous acrylic resin, aqueous polyurethane resin and silica sol.
Preferably, the defoaming agent in the step 1) is any one of an organosilicon defoaming agent and a polyether defoaming agent.
Preferably, the wetting agent in the step 1) is any one of an anionic surfactant and a cationic surfactant.
Preferably, the reject granulation powder in the step 3) is granulation powder with a particle size of 70 microns or more and 40 microns or less.
Preferably, the particle size of the qualified particle size granulated powder in the step 4) is 40-70 microns.
Preferably, the step 4) of the glue discharging treatment is to introduce the granulated powder into a plasma high temperature furnace, so that the granulated powder is quickly heated to 900-1000 ℃ under the high temperature effect of the plasma, and is continuously heated for 5-10 seconds, and the organic binder, various auxiliary agents and residual water in the granulated powder are discharged through the high temperature treatment, and meanwhile, the shape integrity of the granulated powder is ensured by utilizing the adhesion property of the glass in the high temperature state.
Preferably, the temperature of the flame in the step 5) is 1600-1700 ℃, and the flame spraying time is 3-5 seconds.
Compared with the prior art, the invention has the following advantages:
according to the method, 25-30% of glass dust removal powder waste with the average particle size of 8 microns is directly granulated into particles with the particle size of 40-70 microns, and sintered into qualified glass bead products, so that the qualified yield of the glass bead products is improved by 20-25%, the production energy consumption of the products is reduced, the yield of the glass bead mass-market particle size segments is increased, and the production pressure caused by stock backlog of other mass-market particle size segments is reduced. Meanwhile, the reasonable glue discharging treatment process of the method avoids the occurrence of bubbles and cracks after sintering before sintering the granulated powder, thereby ensuring the stability of the product quality of the glass beads.
Drawings
FIG. 1 is a schematic diagram of the steps of the method of the present invention.
Description of the embodiments
The present invention will be described in further detail with reference to the following examples
Examples
1) Adding deionized water, modified polypropylene alcohol resin, organic silicon defoamer and anionic surfactant into glass dust-removing powder to prepare dust-removing powder slurry for granulation, wherein the glass dust-removing powder comprises, by weight, 52 parts of glass dust-removing powder, 42 parts of deionized water, 6 parts of modified polypropylene alcohol resin, 0.1 part of organic silicon defoamer and 0.5 part of anionic surfactant;
2) Granulating the dust-removing powder slurry by using a spray granulator pressure granulation method to obtain granulated powder;
3) Sieving the granulated powder by an ultrasonic vibration sieve, and re-dissolving the granulated powder with the particle size of more than 70 microns and less than 40 microns into slurry after the step 1);
4) Introducing the granulated powder with the particle size of 40-70 microns into a plasma high temperature furnace, quickly heating the granulated powder to 900 ℃ under the high temperature effect of plasma, continuously heating for 7 seconds, discharging organic binder, various auxiliary agents and residual moisture in the granulated powder through high temperature treatment, and simultaneously ensuring the shape integrity of the granulated powder by utilizing the adhesion of glass in a high temperature state;
5) And (3) feeding the granulated powder mixed with oxygen and natural gas after the glue discharge into a combustion spray gun, and spraying and sintering for 5 seconds at the flame temperature of 1600 ℃ of the combustion spray gun to obtain qualified high-refractive-index reflective glass microspheres.
Through detection, the refractive index of the glass beads is more than or equal to 2.08.
Examples
1) Adding deionized water, aqueous acrylic resin, polyether defoamer and cationic surfactant into glass dust-removing powder to prepare dust-removing powder slurry for granulation, wherein the glass dust-removing powder comprises, by weight, 55 parts of glass dust-removing powder, 45 parts of deionized water, 6 parts of aqueous acrylic resin, 0.2 part of polyether defoamer and 0.6 part of cationic surfactant;
2) Granulating the dust-removing powder slurry by using a spray granulator centrifugal granulation method to obtain granulated powder;
3) Sieving the granulated powder by an ultrasonic vibration sieve, and re-dissolving the granulated powder with the particle size of more than 70 microns and less than 40 microns into slurry after the step 1);
4) Introducing the granulated powder with the particle size of 40-70 microns into a plasma high temperature furnace, quickly heating the granulated powder to 1000 ℃ under the high temperature effect of plasma, continuously heating for 5 seconds, discharging organic binder, various auxiliary agents and residual moisture in the granulated powder through high temperature treatment, and simultaneously ensuring the shape integrity of the granulated powder by utilizing the adhesion of glass in a high temperature state;
5) And (3) feeding the granulated powder mixed with oxygen and natural gas after the glue discharge into a combustion spray gun, and spraying and sintering for 3 seconds at the flame temperature of 1700 ℃ of the combustion spray gun to obtain qualified high-refractive-index reflective glass microspheres.
Through detection, the refractive index of the glass beads is more than or equal to 2.13.
Examples
1) Adding deionized water, aqueous polyurethane resin, polyether defoamer and cationic surfactant into glass dust-removing powder to prepare dust-removing powder slurry for granulation, wherein 58 parts of glass dust-removing powder, 45 parts of deionized water, 7 parts of aqueous polyurethane resin, 0.3 part of polyether defoamer and 0.7 part of cationic surfactant are calculated according to parts by weight;
2) Granulating the dust-removing powder slurry by using a fluidized bed to obtain granulated powder;
3) Sieving the granulated powder by an ultrasonic vibration sieve, and re-dissolving the granulated powder with the particle size of more than 70 microns and less than 40 microns into slurry after the step 1);
4) Introducing the granulated powder with the particle size of 40-70 microns into a plasma high temperature furnace, quickly heating the granulated powder to 1000 ℃ under the high temperature effect of plasma, continuously heating for 5 seconds, discharging organic binder, various auxiliary agents and residual moisture in the granulated powder through high temperature treatment, and simultaneously ensuring the shape integrity of the granulated powder by utilizing the adhesion of glass in a high temperature state;
5) And (3) feeding the granulated powder mixed with oxygen and natural gas after the glue discharge into a combustion spray gun, and spraying and sintering for 4 seconds at the flame temperature of 1650 ℃ of the combustion spray gun to obtain qualified high-refractive-index reflective glass microspheres.
Through detection, the refractive index of the glass beads is more than or equal to 2.09.
1) Adding deionized water, aqueous polyurethane resin, polyether defoamer and cationic surfactant into glass dust-removing powder to prepare dust-removing powder slurry for granulation, wherein 58 parts of glass dust-removing powder, 45 parts of deionized water, 7 parts of aqueous polyurethane resin, 0.3 part of polyether defoamer and 0.7 part of cationic surfactant are calculated according to parts by weight;
2) Granulating the dust-removing powder slurry by using a fluidized bed to obtain granulated powder;
3) Sieving the granulated powder by an ultrasonic vibration sieve, and re-dissolving the granulated powder with the particle size of more than 70 microns and less than 40 microns into slurry after the step 1);
4) Mixing the granulated powder with the particle size of 40-70 microns, introducing oxygen and natural gas into a combustion spray gun, and spraying and sintering the mixture for 4 seconds at the flame temperature of 1650 ℃ of the combustion spray gun to obtain the glass microspheres.
The glass beads prepared in comparative example 1 were not subjected to the adhesive removing treatment, and the defective glass beads containing bubbles and cracks were up to 17% or more.
The foregoing is merely exemplary embodiments of the present invention, and it should be noted that various changes, modifications, substitutions and alterations can be made herein by those skilled in the art without departing from the technical principles of the present invention, which are also intended to be regarded as the scope of the invention.
Claims (9)
1. A method for preparing high-refractive-index reflective glass beads by using glass dust removal powder is characterized by comprising the following specific steps:
1) Preparing glass dust-removing powder slurry, namely adding deionized water, a binder, a defoaming agent and a wetting agent into the glass dust-removing powder to prepare the dust-removing powder slurry for granulation;
2) Granulating the dust-removing powder slurry, and granulating the dust-removing powder slurry by a granulator to obtain granulated powder;
3) Sieving the granulated powder, sieving the granulated powder by a sieving machine, and re-dissolving the granulated powder with unqualified particle size into slurry after the step 1);
4) Performing rubber discharging treatment on the granulating powder, and performing rubber discharging treatment on the granulating powder with the composite particle size;
5) Sintering the granulated powder into beads, and sintering the granulated powder after glue discharge into qualified high-refractive-index reflective glass beads through high-temperature flame spraying.
2. The method for preparing the high-refractive-index reflective glass beads by using the glass dust removal powder according to claim 1, wherein the glass dust removal powder slurry in the step 1) is prepared from, by weight, 50-60 parts of the glass dust removal powder, 42-50 parts of deionized water, 4-8 parts of a binder, 0.1-0.3 part of a defoaming agent and 0.5-0.7 part of a wetting agent.
3. The method for preparing the high-refractive-index reflective glass beads by using the glass dust removal powder according to claim 1, wherein the binder in the step 1) is any one or a mixture of a plurality of modified polypropylene alcohol resins, aqueous acrylic resins, aqueous polyurethane resins and silica sols.
4. The method for preparing high refractive index reflecting glass beads by using glass dust removal powder according to claim 1, wherein the defoaming agent in the step 1) is any one of an organosilicon defoaming agent and a polyether defoaming agent.
5. The method for preparing high refractive index reflecting glass beads with glass dust removing powder according to claim 1, wherein the wetting agent in the step 1) is any one of anionic surfactant and cationic surfactant.
6. The method for preparing high refractive index reflecting glass beads with glass dust removal powder according to claim 1, wherein the unacceptable granulated powder in the step 3) is a granulated powder having a particle size of 70 μm or more and 40 μm or less.
7. The method for preparing high refractive index reflecting glass beads with glass dust removal powder according to claim 1, wherein the qualified particle size of the granulated powder in step 4) is 40-70 μm.
8. The method for preparing high refractive index reflecting glass beads by using glass dust removal powder according to claim 1, wherein the step 4) of the glue discharging treatment is to introduce the granulated powder with qualified particle size into a plasma high temperature furnace, so that the granulated powder is rapidly heated to 900-1000 ℃ under the high temperature effect of the plasma, and is continuously heated for 5-10 seconds, and the organic binder, various auxiliary agents and residual moisture in the granulated powder are discharged by high temperature treatment, and meanwhile, the shape integrity of the granulated powder is ensured by utilizing the adhesion property of the glass in the high temperature state.
9. The method for preparing high refractive index reflective glass beads with glass soot according to claim 1, wherein the flame temperature of the firing in step 5) is 1600-1700 ℃ and the firing time is 3-5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310766569.8A CN116768484A (en) | 2023-06-27 | 2023-06-27 | Method for preparing high-refractive-index reflective glass beads from glass dust removal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310766569.8A CN116768484A (en) | 2023-06-27 | 2023-06-27 | Method for preparing high-refractive-index reflective glass beads from glass dust removal powder |
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| Publication Number | Publication Date |
|---|---|
| CN116768484A true CN116768484A (en) | 2023-09-19 |
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ID=87989205
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310766569.8A Pending CN116768484A (en) | 2023-06-27 | 2023-06-27 | Method for preparing high-refractive-index reflective glass beads from glass dust removal powder |
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|---|---|---|---|---|
| CN105271784A (en) * | 2015-10-30 | 2016-01-27 | 中国科学院理化技术研究所 | Hollow glass microsphere |
| CN106517748A (en) * | 2016-12-28 | 2017-03-22 | 中国建材国际工程集团有限公司 | Method utilizing waste glass to prepare hollow glass beads and spray granulation device thereof |
| WO2020129174A1 (en) * | 2018-12-19 | 2020-06-25 | 東ソー・クォーツ株式会社 | Opaque quartz glass and production method therefor |
| CN112573900A (en) * | 2020-11-23 | 2021-03-30 | 南阳仁创再生资源有限公司 | Recycling method of casting dust and sludge |
| CN114014527A (en) * | 2021-11-01 | 2022-02-08 | 西安赛尔电子材料科技有限公司 | Aluminum-sealed phosphate glass powder spray granulation method |
| CN114315160A (en) * | 2021-12-20 | 2022-04-12 | 西安赛尔电子材料科技有限公司 | Low dielectric sealing glass granulation powder and preparation method thereof |
| CN115872386A (en) * | 2022-09-27 | 2023-03-31 | 浙江锂宸新材料科技有限公司 | Preparation method of silicon-carbon composite material, product thereof and application of silicon-carbon composite material in lithium ion battery |
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2023
- 2023-06-27 CN CN202310766569.8A patent/CN116768484A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271784A (en) * | 2015-10-30 | 2016-01-27 | 中国科学院理化技术研究所 | Hollow glass microsphere |
| CN106517748A (en) * | 2016-12-28 | 2017-03-22 | 中国建材国际工程集团有限公司 | Method utilizing waste glass to prepare hollow glass beads and spray granulation device thereof |
| WO2020129174A1 (en) * | 2018-12-19 | 2020-06-25 | 東ソー・クォーツ株式会社 | Opaque quartz glass and production method therefor |
| CN112573900A (en) * | 2020-11-23 | 2021-03-30 | 南阳仁创再生资源有限公司 | Recycling method of casting dust and sludge |
| CN114014527A (en) * | 2021-11-01 | 2022-02-08 | 西安赛尔电子材料科技有限公司 | Aluminum-sealed phosphate glass powder spray granulation method |
| CN114315160A (en) * | 2021-12-20 | 2022-04-12 | 西安赛尔电子材料科技有限公司 | Low dielectric sealing glass granulation powder and preparation method thereof |
| CN115872386A (en) * | 2022-09-27 | 2023-03-31 | 浙江锂宸新材料科技有限公司 | Preparation method of silicon-carbon composite material, product thereof and application of silicon-carbon composite material in lithium ion battery |
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