CN111792850A - Production method of superfine glass microfiber - Google Patents
Production method of superfine glass microfiber Download PDFInfo
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- CN111792850A CN111792850A CN202010607185.8A CN202010607185A CN111792850A CN 111792850 A CN111792850 A CN 111792850A CN 202010607185 A CN202010607185 A CN 202010607185A CN 111792850 A CN111792850 A CN 111792850A
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- microfiber
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- 239000011521 glass Substances 0.000 title claims abstract description 42
- 229920001410 Microfiber Polymers 0.000 title claims abstract description 41
- 239000003658 microfiber Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 80
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 36
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 36
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 20
- 239000006004 Quartz sand Substances 0.000 claims abstract description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 20
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000008395 clarifying agent Substances 0.000 claims abstract description 20
- 239000010459 dolomite Substances 0.000 claims abstract description 20
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 20
- 239000010433 feldspar Substances 0.000 claims abstract description 20
- 239000010436 fluorite Substances 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 20
- 230000008018 melting Effects 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 229910021538 borax Inorganic materials 0.000 claims abstract description 18
- 229910000027 potassium carbonate Inorganic materials 0.000 claims abstract description 18
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 18
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 18
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 18
- 235000010339 sodium tetraborate Nutrition 0.000 claims abstract description 18
- 239000004328 sodium tetraborate Substances 0.000 claims abstract description 18
- 238000007664 blowing Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 15
- 235000011181 potassium carbonates Nutrition 0.000 claims abstract description 9
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 8
- 238000005303 weighing Methods 0.000 claims abstract description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 36
- 239000006060 molten glass Substances 0.000 claims description 25
- 239000003345 natural gas Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- 238000000498 ball milling Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 17
- 239000011491 glass wool Substances 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000002893 slag Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012856 weighed raw material Substances 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
- C03C13/00—Fibre or filament compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B1/00—Preparing the batches
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/06—Manufacture of glass fibres or filaments by blasting or blowing molten glass, e.g. for making staple fibres
-
- 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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
-
- 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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/004—Refining agents
-
- 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
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/02—Pretreated ingredients
Abstract
The invention discloses a production method of superfine glass microfiber, which comprises the following steps: weighing raw materials, pretreating quartz sand, feldspar powder, dolomite powder, calcite powder and fluorite powder, uniformly mixing with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch mixture, melting the batch mixture to obtain glass liquid, feeding the glass liquid into a centrifugal fiber forming machine, throwing the glass liquid out through a centrifugal head of the centrifugal fiber forming machine, and forming superfine glass microfiber under the action of blowing air flow. The invention can effectively improve the tensile strength of the glass microfiber, and the produced microfiber glass has the advantages of less slag balls and uniform fiber diameter, and is beneficial to improving the quality of microfiber glass wool.
Description
Technical Field
The invention relates to the technical field of glass microfiber manufacturing, in particular to a production method of superfine glass microfiber.
Background
The microfiber glass wool is glass wool with the average fiber diameter smaller than 3 microns, has the advantages of large specific surface area, good chemical stability, high use temperature and the like, and is widely applied to the fields of heat insulation materials, sound absorption materials and the like. With the increasing economic level, the market demand for microfiber glass wool is increasing. At present, the main methods for producing microfiber glass wool are flame method and centrifugal method. The fiber produced by the flame method has poor diameter uniformity and more slag balls, and is difficult to meet the requirements of high-quality and high-performance microfiber glass wool. The microfiber glass cotton slag balls produced by the centrifugal method are few, the fiber diameter is relatively uniform, but the problems of insufficient tensile strength and the like exist, and the improvement of the production process is urgently needed.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a production method of superfine glass microfiber.
The invention provides a production method of superfine glass microfiber, which comprises the following steps:
s1, weighing raw materials, wherein the raw materials comprise quartz sand, feldspar powder, dolomite powder, calcite powder, fluorite powder, borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent;
s2, performing ultraviolet irradiation on quartz sand, feldspar powder, dolomite powder, calcite powder and fluorite powder, and performing ball milling treatment to obtain a pretreatment mixture;
s3, uniformly mixing the pretreated mixture with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch;
s4, melting the batch to obtain molten glass;
and S5, sending the molten glass into a centrifugal fiberizer, throwing the molten glass out by a centrifugal head of the centrifugal fiberizer, and forming the superfine glass microfiber under the action of blowing air flow.
Preferably, the raw materials are proportioned as follows by mass: 51-52 parts of quartz sand, 10-11 parts of feldspar powder, 8-8.2 parts of borax, 9.5-10 parts of dolomite powder, 2.6-2.9 parts of calcite powder, 13-13.5 parts of sodium carbonate, 2.4-2.6 parts of sodium nitrate, 1-1.2 parts of fluorite powder, 0.15-0.25 part of potassium carbonate and 0.2-0.3 part of clarifying agent.
Preferably, the raw materials are proportioned as follows by mass: 51.6 parts of quartz sand, 10.54 parts of feldspar powder, 8.04 parts of borax, 9.71 parts of dolomite powder, 2.77 parts of calcite powder, 13.315 parts of sodium carbonate, 2.491 parts of sodium nitrate, 1.1 parts of fluorite powder, 0.195 part of potassium carbonate and 0.222 part of clarifying agent.
Preferably, in the step S2, the wavelength of the ultraviolet radiation is 200-300nm, and the irradiation time is 0.5-3 h.
Preferably, in the step S2, the rotation speed of the ball milling process is 200-: 1, the ball milling time is 6-10 h.
Preferably, in the step S4, the melting temperature is 1420-1450 ℃, and the wind pressure of the furnace used for melting is 15-25 kPa.
Preferably, in step S5, the glass liquid is adjusted to 1200-1210 ℃ and then sent to a fiber-forming centrifuge; preferably, in the step S5, the flow rate of the molten glass sent to the centrifugal fiberizer is 200-300 kg/h.
Preferably, in the step S5, the rotation speed of the centrifugal head is 3500-3750r/min, and the temperature is 900-920 ℃; preferably, in step S5, the centrifugal head has an outer diameter of 360mm, a small hole diameter of 0.65mm, and a hole number of 21000.
Preferably, in the step S5, the blowing air flow is formed by mixing natural gas and air, wherein the air pressure is 80-90kPa, and the flow rate is 1200-1500nm3The flow ratio of the natural gas to the air is 1 (8-12), and the heat value of the natural gas is 35-36.5MJ/m3(ii) a Preferably, the temperature of the blowing air flow is 450-550 ℃, and the wind speed is 300-400 m/s.
The invention has the following beneficial effects:
the method comprises the steps of selecting quartz sand, feldspar powder, dolomite powder, calcite powder, fluorite powder, borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent as raw materials, pretreating the quartz sand, the feldspar powder, the dolomite powder, the calcite powder and the fluorite powder, uniformly mixing the pretreated quartz sand, the feldspar powder, the dolomite powder, the calcite powder and the fluorite powder with the borax, the sodium carbonate, the sodium nitrate, the potassium carbonate and the clarifying agent to obtain a batch mixture, melting the batch mixture to obtain glass liquid, feeding the glass liquid into a centrifugal fiber forming machine, throwing the glass liquid out through a centrifugal head of the centrifugal fiber forming machine, and forming superfine glass microfibers under the action of blowing air flow. The method comprises the steps of carrying out ultraviolet irradiation treatment under proper conditions on mineral raw materials containing a large number of infusible components such as quartz sand, feldspar powder, dolomite powder, calcite powder and fluorite powder, effectively improving the content of functional groups on the surface of the mineral raw materials, increasing the surface active sites of the mineral raw materials, further improving the dispersion uniformity of each mineral raw material through ball milling treatment, enabling the mineral raw materials to have stronger interaction with the fusible components and a clarifying agent and be mixed more uniformly in the subsequent mixing process, so that the interaction of each component in the melting process is enhanced, the molten glass obtained through melting has more uniform properties, the strength and uniformity of glass microfibers are effectively improved, the effect of the clarifying agent is better played, and the content of slag balls is reduced. The invention improves the process for preparing the superfine glass microfiber by a centrifugal blowing method, can effectively improve the tensile strength of the glass microfiber, and the produced microfiber glass has the advantages of less slag balls and uniform fiber diameter, and can be used for producing high-quality microfiber glass wool.
Detailed Description
The technical solution of the present invention will be described in detail below with reference to specific examples.
Example 1
A method for producing superfine glass microfiber comprises the following steps:
s1, weighing the raw materials in the following ratio: 51.6 parts of quartz sand, 10.54 parts of feldspar powder, 8.04 parts of borax, 9.71 parts of dolomite powder, 2.77 parts of calcite powder, 13.315 parts of sodium carbonate, 2.491 parts of sodium nitrate, 1.1 parts of fluorite powder, 0.195 part of potassium carbonate and 0.222 part of clarifying agent;
s2, irradiating the quartz sand, the feldspar powder, the dolomite powder, the calcite powder and the fluorite powder for 1.5h by using ultraviolet rays with the wavelength of 270nm, and then performing ball-material ratio of 20: 1, performing ball milling treatment for 8 hours to obtain a pretreatment mixture;
s3, uniformly mixing the pretreated mixture with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch;
s4, melting the batch, wherein the melting temperature is 1440 ℃, and the wind pressure of a furnace used for melting is 20kPa, so as to obtain molten glass;
s5, adjusting the molten glass to 1205 ℃, sending the molten glass into a fiber forming centrifuge at a flow rate of 250kg/h, throwing the molten glass out by a centrifugal head of the centrifugal fiber forming centrifuge, and forming superfine glass microfibers under the action of blowing air flow at a temperature of 500 ℃ and a wind speed of 350m/S, wherein the rotating speed of the centrifugal head is 3600r/min, the temperature is 91 ℃, the outer diameter of the centrifugal head is 360mm, the aperture of a small hole is 0.65mm, and the number of the holes is 21000; the blowing air flow is formed by mixing natural gas and air, wherein the air pressure of the air is 85kPa, and the flow rate is 1400nm3The flow ratio of the natural gas to the air is 1:10, and the heat value of the natural gas is 36MJ/m3。
Example 2
A method for producing superfine glass microfiber comprises the following steps:
s1, weighing the raw materials in the following ratio: quartz sand 51, feldspar powder 10, borax 8, dolomite powder 9.5, calcite powder 2.6, sodium carbonate 13, sodium nitrate 2.4, fluorite powder 1, potassium carbonate 0.15 and clarifying agent 0.2;
s2, irradiating the quartz sand, the feldspar powder, the dolomite powder, the calcite powder and the fluorite powder for 0.5h by using ultraviolet rays with the wavelength of 200nm, and then performing ball-material ratio of 15: 1, performing ball milling treatment for 6 hours to obtain a pretreatment mixture;
s3, uniformly mixing the pretreated mixture with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch;
s4, melting the batch, wherein the melting temperature is 1420 ℃, and the wind pressure of a furnace used for melting is 15kPa, so as to obtain molten glass;
s5, adjusting the temperature of the molten glass to 1200 ℃, sending the molten glass into a fiber forming centrifugal machine at a flow rate of 200kg/h, and performing centrifugal fiber forming on the molten glassThrowing out a centrifugal head, and forming superfine glass microfiber under the action of blowing air flow at the temperature of 450 ℃ and the air speed of 300m/s, wherein the rotating speed of the centrifugal head is 3500r/min, the temperature is 900 ℃, the outer diameter of the centrifugal head is 360mm, the aperture of a small hole is 0.65mm, and the number of the holes is 21000; the blowing air flow is formed by mixing natural gas and air, wherein the air pressure is 80kPa, and the flow is 1200nm3The flow ratio of the natural gas to the air is 1:8, and the heat value of the natural gas is 35MJ/m3。
Example 3
A method for producing superfine glass microfiber comprises the following steps:
s1, weighing the raw materials in the following ratio: 52 parts of quartz sand, 11 parts of feldspar powder, 8.2 parts of borax, 10 parts of dolomite powder, 2.9 parts of calcite powder, 13.5 parts of sodium carbonate, 2.6 parts of sodium nitrate, 1.2 parts of fluorite powder, 0.25 part of potassium carbonate and 0.3 part of clarifying agent;
s2, irradiating the quartz sand, the feldspar powder, the dolomite powder, the calcite powder and the fluorite powder for 3 hours by using ultraviolet rays with the wavelength of 300nm, and then performing ball-material ratio of 25: 1, performing ball milling treatment for 10 hours to obtain a pretreatment mixture;
s3, uniformly mixing the pretreated mixture with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch;
s4, melting the batch, wherein the melting temperature is 1450 ℃, and the wind pressure of a furnace used for melting is 25kPa, so as to obtain molten glass;
s5, adjusting the molten glass to 1210 ℃, feeding the molten glass into a fiber forming centrifuge at a flow rate of 300kg/h, throwing the molten glass out by a centrifugal head of the centrifugal fiber forming centrifuge, and forming superfine glass microfibers under the action of blowing air flow at a temperature of 550 ℃ and a wind speed of 400m/S, wherein the rotating speed of the centrifugal head is 3750r/min, the temperature is 920 ℃, the outer diameter of the centrifugal head is 360mm, the aperture of a small hole is 0.65mm, and the number of the holes is 21000; the blowing air flow is formed by mixing natural gas and air, wherein the air pressure of the air is 90kPa, and the flow rate is 1500nm3The flow ratio of the natural gas to the air is 1:12, and the heat value of the natural gas is 36.5MJ/m3。
Comparative example 1
A method for producing superfine glass microfiber comprises the following steps:
s1, weighing the raw materials in the following ratio: 51.6 parts of quartz sand, 10.54 parts of feldspar powder, 8.04 parts of borax, 9.71 parts of dolomite powder, 2.77 parts of calcite powder, 13.315 parts of sodium carbonate, 2.491 parts of sodium nitrate, 1.1 parts of fluorite powder, 0.195 part of potassium carbonate and 0.222 part of clarifying agent, and uniformly mixing the weighed raw materials to obtain a batch mixture;
s2, melting the batch, wherein the melting temperature is 1440 ℃, and the wind pressure of a furnace used for melting is 20kPa, so as to obtain molten glass;
s3, adjusting the molten glass to 1205 ℃, sending the molten glass into a fiber forming centrifuge at a flow rate of 250kg/h, throwing the molten glass out by a centrifugal head of the centrifugal fiber forming centrifuge, and forming superfine glass microfibers under the action of blowing air flow at a temperature of 500 ℃ and a wind speed of 350m/S, wherein the rotating speed of the centrifugal head is 3600r/min, the temperature is 91 ℃, the outer diameter of the centrifugal head is 360mm, the aperture of a small hole is 0.65mm, and the number of the holes is 21000; the blowing air flow is formed by mixing natural gas and air, wherein the air pressure of the air is 85kPa, and the flow rate is 1400nm3The flow ratio of the natural gas to the air is 1:10, and the heat value of the natural gas is 36MJ/m3。
The ultra fine glass microfibers obtained in the above example 1 and comparative example 1 were subjected to the performance test, and the test results are shown in Table 1:
TABLE 1 superfine glass microfiber Performance test results
| Detecting items | Detection standard | Example 1 | Comparative example 1 |
| Tensile strength (MPa) | JC/T 978-2012 | 16.8 | 13.7 |
| Shot content (%) | JC/T 978-2012 | 0.2 | 0.4 |
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A method for producing superfine glass microfiber is characterized by comprising the following steps:
s1, weighing raw materials, wherein the raw materials comprise quartz sand, feldspar powder, dolomite powder, calcite powder, fluorite powder, borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent;
s2, performing ultraviolet irradiation on quartz sand, feldspar powder, dolomite powder, calcite powder and fluorite powder, and performing ball milling treatment to obtain a pretreatment mixture;
s3, uniformly mixing the pretreated mixture with borax, sodium carbonate, sodium nitrate, potassium carbonate and a clarifying agent to obtain a batch;
s4, melting the batch to obtain molten glass;
and S5, sending the molten glass into a centrifugal fiberizer, throwing the molten glass out by a centrifugal head of the centrifugal fiberizer, and forming the superfine glass microfiber under the action of blowing air flow.
2. The method for producing an ultrafine glass microfiber according to claim 1, wherein the raw materials comprise, in parts by mass: 51-52 parts of quartz sand, 10-11 parts of feldspar powder, 8-8.2 parts of borax, 9.5-10 parts of dolomite powder, 2.6-2.9 parts of calcite powder, 13-13.5 parts of sodium carbonate, 2.4-2.6 parts of sodium nitrate, 1-1.2 parts of fluorite powder, 0.15-0.25 part of potassium carbonate and 0.2-0.3 part of clarifying agent.
3. The method for producing an ultrafine glass microfiber according to claim 1 or 2, wherein the raw materials are in the following ratio by mass: 51.6 parts of quartz sand, 10.54 parts of feldspar powder, 8.04 parts of borax, 9.71 parts of dolomite powder, 2.77 parts of calcite powder, 13.315 parts of sodium carbonate, 2.491 parts of sodium nitrate, 1.1 parts of fluorite powder, 0.195 part of potassium carbonate and 0.222 part of clarifying agent.
4. The method for producing an ultrafine glass microfiber according to any one of claims 1 to 3, wherein in step S2, the wavelength of the ultraviolet radiation is 200-300nm, and the irradiation time is 0.5-3 h.
5. The method for producing ultrafine glass microfibers according to any one of claims 1 to 4, wherein the rotation speed of the ball milling process in step S2 is 200-300r/min, and the ball-to-material ratio is (15-25): 1, the ball milling time is 6-10 h.
6. The method as claimed in any one of claims 1 to 5, wherein the melting temperature in step S4 is 1420-.
7. The method for producing an ultrafine glass microfiber according to any one of claims 1 to 6, wherein in step S5, the molten glass is adjusted to 1200 ℃ and 1210 ℃ before being sent to a fiberizing centrifuge; preferably, in the step S5, the flow rate of the molten glass sent to the centrifugal fiberizer is 200-300 kg/h.
8. The method as claimed in any one of claims 1 to 7, wherein in step S5, the rotation speed of the centrifugal head is 3500-3750r/min, and the temperature is 900-920 ℃; preferably, in step S5, the centrifugal head has an outer diameter of 360mm, a small hole diameter of 0.65mm, and a hole number of 21000.
9. The method for producing an ultrafine glass microfiber according to any one of claims 1 to 8, wherein in step S5, the blowing air is formed by mixing natural gas and air, wherein the air pressure is 80 to 90kPa and the flow rate is 1200-1500nm3The flow ratio of the natural gas to the air is 1 (8-12), and the heat value of the natural gas is 35-36.5MJ/m3(ii) a Preferably, the temperature of the blowing air flow is 450-550 ℃, and the wind speed is 300-400 m/s.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113307499A (en) * | 2021-06-11 | 2021-08-27 | 王喜才 | Superfine glass microfiber and preparation method thereof |
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