CN107056050B - Preparation method of special raw material glass for high-performance borosilicate foam glass - Google Patents
Preparation method of special raw material glass for high-performance borosilicate foam glass Download PDFInfo
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- CN107056050B CN107056050B CN201710451633.8A CN201710451633A CN107056050B CN 107056050 B CN107056050 B CN 107056050B CN 201710451633 A CN201710451633 A CN 201710451633A CN 107056050 B CN107056050 B CN 107056050B
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- 239000011521 glass Substances 0.000 title claims abstract description 66
- 239000002994 raw material Substances 0.000 title claims abstract description 41
- 239000011494 foam glass Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000010791 quenching Methods 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 239000003258 bubble free glass Substances 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims abstract description 4
- 239000012265 solid product Substances 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims abstract description 4
- 239000002918 waste heat Substances 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 229910052681 coesite Inorganic materials 0.000 claims 1
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 229910052906 cristobalite Inorganic materials 0.000 claims 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Inorganic materials O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 1
- 229910052682 stishovite Inorganic materials 0.000 claims 1
- 229910052905 tridymite Inorganic materials 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 239000000047 product Substances 0.000 abstract description 8
- 239000002253 acid Substances 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000009776 industrial production Methods 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000006063 cullet Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000005332 obsidian Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000005373 porous glass Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000004616 structural foam 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
- 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
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
- C03C11/007—Foam glass, e.g. obtained by incorporating a blowing agent and heating
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to a preparation method of special raw material glass for high-performance borosilicate foam glass, which comprises the following steps: (1) preparing materials: weighing various raw materials and uniformly mixing in a uniform mixer; (2) melting: heating the prepared raw materials at high temperature to form uniform bubble-free glass liquid; (3) molding: converting the melted glass liquid into a solid product with a fixed shape; (4) water quenching: the formed product is quenched by water and crushed into particles, and the particles are fished out by a material fishing machine; (5) conveying and water controlling: granular glass raw materials fished out by the material fishing machine are flatly paved on the way of conveying the raw materials to a storage bin by a conveyor belt, a waste heat recovery device is used for recovering partial hot air, hot air is uniformly blown onto a belt conveyor through an air pipe, and moisture adsorbed on glass is dried. The foam glass foamed by using the glass as the raw material has the advantages of good acid corrosion resistance, high mechanical strength, low heat conductivity coefficient, good air hole tightness and the like, and is suitable for industrial production.
Description
Technical Field
The invention relates to a preparation method of borosilicate foam glass, in particular to a preparation method of special raw material glass for high-performance borosilicate foam glass.
Background
The foam glass is invented by Pittsburgh Corning company in America at first, and is an inorganic non-metal glass material which is prepared by finely crushing and uniformly mixing cullet, a foaming agent, a modification additive, a foaming accelerant and the like, and then melting, foaming and annealing the cullet at high temperature. Because the new material has the functions of moisture prevention, fire prevention and corrosion prevention, and the glass material has the advantage of no deterioration in long-term use performance, the glass material is favored by users under the harsh environments of heat insulation, deep cooling, underground, open air, flammability, easy dampness, chemical erosion and the like. The material is widely used for wall heat preservation, petroleum, chemical industry, machine room noise reduction, highway sound absorption and isolation walls, electric power, military products and the like, and is called as a green environment-friendly heat-insulating material by users.
the foam glass is also called porous glass, countless small open or closed pores are filled in the foam glass, the area of the pores accounts for 80-90% of the total volume, the pore size is 0.5-5 mm, and the pore size is as small as several microns. The main raw material of the foam glass is usually cullet, and acidic volcanic lava substances such as volcanic ash, pumice, perlite, obsidian, blast furnace slag, etc. can be used. However, such foam glass has the following disadvantages: (1) the acid corrosion resistance is poor; (2) the mechanical strength is low; (3) the air hole tightness is not good, and closed-cell structural foam glass with consistent appearance is difficult to obtain; (4) can meet the requirements of good acid corrosion resistance, high mechanical strength and good air hole tightness, and can not achieve the purpose of large-scale production.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the preparation method of the special raw material glass for the high-performance borosilicate foam glass, and the borosilicate foam glass prepared by the preparation method has the advantages of good acid corrosion resistance, high mechanical strength, good air hole tightness and the like, and can achieve the purpose of large-scale production.
a preparation method of special raw material glass for high-performance borosilicate foam glass comprises the following steps:
(1) Preparing materials: weighing various raw materials according to a designed material recipe, and uniformly mixing in a unified mixer; wherein the raw materials comprise the following components in percentage by mass:
(2) Melting: heating the prepared raw materials at high temperature to form uniform bubble-free glass liquid;
(3) Molding: converting the melted glass liquid into a solid product with a fixed shape;
(4) water quenching: the formed product is quenched by water and crushed into particles, and the particles are fished out by a material fishing machine;
(5) Conveying and water controlling: granular glass raw materials fished out by the material fishing machine are flatly paved on the way of conveying the raw materials to a storage bin by a conveyor belt, a waste heat recovery device is used for recovering partial hot air, hot air is uniformly blown onto a belt conveyor through an air pipe, and moisture adsorbed on glass is dried.
Preferably, in the step (1), the composition of each raw material is as follows by mass percent:
Preferably, in the step (2), melting is carried out in a melting furnace, the melting furnace adopts an energy-saving glass industrial flame pool furnace, the mixture is melted in the pool furnace, and open fire is heated at the upper part of the glass liquid level; the melting temperature of the glass is 1300-1600 ℃.
preferably, in step (3), the glass is first transformed from a viscous liquid state to a plastic state and then to a brittle solid state; the glass tube is blown by adopting a feeding vertical extension method, and the formed product is in a hollow glass tube state.
Preferably, in step (4), water is supplied by a circulating cooling water system, and the temperature of the quenching water is below 70 ℃.
Preferably, the material fishing machine is a scraper material fishing machine.
Preferably, in the step (5), the temperature of the hot air blown by the blower 2 is 250 to 300 ℃.
The foam glass foamed by using the glass as the raw material has the advantages of good acid corrosion resistance, high mechanical strength, low heat conductivity coefficient, good air hole tightness and the like, and is suitable for industrial production.
Detailed Description
The invention is further illustrated by the following examples, without limiting the scope of the invention.
example 1
a preparation method of special raw material glass for high-performance borosilicate foam glass comprises the following steps:
(1) Preparing materials: weighing various raw materials according to a designed material recipe, and uniformly mixing in a unified mixer; wherein the raw materials comprise the following components in percentage by mass:
(2) Melting: heating the prepared raw materials at high temperature to form uniform bubble-free glass liquid; the method is a very complicated physical and chemical reaction process, the melting of the glass is carried out in a melting furnace, the melting furnace adopts an energy-saving glass industrial flame tank furnace, the mixture is melted in the tank furnace, and the open fire is heated at the upper part of the glass liquid level; the melting temperature of the glass is 1300-1600 ℃; melting into flowing glass liquid, entering a material channel through a working part of the tank furnace, and gradually reducing the glass liquid from high temperature to a suitable forming temperature;
(3) molding: converting the melted glass liquid into a solid product with a fixed shape; the forming must be carried out within a certain temperature range, which is a cooling process, the glass is firstly changed from a viscous liquid state into a plastic state and then into a brittle solid state; blowing a glass tube by adopting a feeding vertical extension method, and performing water quenching forming;
(4) Water quenching: supplying water by using a circulating cooling water system, wherein the quenching water temperature is below 70 ℃, the molded product is in a hollow glass tube state, vertically falls into a water tank after flowing, is quenched into particles, and is fished out by a scraper scooping machine;
(5) Conveying and water controlling: granular glass raw materials fished out by the material fishing machine are flatly paved on the way of conveying the raw materials to a storage bin by a conveyor belt, a waste heat recovery device of an industrial kiln is used for recovering part of hot air, hot air with the temperature of 250-300 ℃ is uniformly blown to the conveyor belt through an air pipe, and moisture adsorbed on the glass is dried.
Two sets of foam glass products were prepared, one set being commercially available ordinary foam glass (5 samples per set) and the other set being foam glass foamed from the glass of the present invention (5 samples per set), and were soaked in dilute sulfuric acid for 20 days, respectively, with the mass change shown in table 1:
TABLE 1
| name (R) | Original mass g | mass g after 20 days | Rate of increase and decrease |
| Foamed glass foamed by common glass raw material | 20 | 20.8～21.6 | ≥4％ |
| The invention relates to foam glass which is foamed by taking glass as a raw material | 20 | 20.01～20.02 | ≤0.1％ |
As can be seen from Table 1, the foamed glass foamed by using the glass of the present invention as a raw material has good pore-sealing property, is not easy to be immersed in acid liquor, has strong erosion resistance against the acid liquor, and therefore has small mass change.
Other technical performance indexes of the foam glass foamed by using the glass as the raw material are shown in the table 2:
TABLE 2
As can be seen from Table 2, the glass of the present invention is foamed glass as a raw material, and further, the experience and effect after pilot plant test on domestic industrial kilns are carried out many times according to the present invention, thereby completely achieving the condition of mass production.
Example 2
The formula of the raw materials in the step (1) in the example 1 is changed into the following formula (in percentage by mass):
Two sets of foam glass products were prepared, one set being commercially available ordinary foam glass (5 samples per set) and the other set being foam glass foamed from the glass of the present invention (5 samples per set), and were soaked in dilute sulfuric acid for 20 days, respectively, with the mass change shown in table 3:
TABLE 3
| Name (R) | Original mass g | Mass g after 20 days | Rate of increase and decrease |
| Foamed glass foamed by common glass raw material | 20 | 20.8～21.6 | ≥4％ |
| the invention relates to foam glass which is foamed by taking glass as a raw material | 20 | 20.015～20.035 | ≤0.175％ |
Other technical performance indicators are shown in table 4:
TABLE 4
| Numerical value of technical Performance index | numerical value | Measured in fact |
| Bulk density | ≤150kg/m3 | 140kg/m3 |
| coefficient of thermal conductivity | ≤0.050W/m.K | 0.04W/m.K |
| Compressive strength | ≥0.8Mpa | 1.7Mpa |
| Flexural strength | ≥0.7Mpa | 0.83Mpa |
| water absorption rate | ≤0.5％ | 0.1％ |
Example 3
The formula of the raw materials in the step (1) in the example 1 is changed into the following formula (in percentage by mass):
two sets of foam glass products were prepared, one set being commercially available ordinary foam glass (5 samples per set) and the other set being foam glass foamed from the glass of the present invention (5 samples per set), and were soaked in dilute sulfuric acid for 20 days, respectively, with the mass change shown in table 3:
TABLE 3
| name (R) | Original mass g | Mass g after 20 days | Rate of increase and decrease |
| Foamed glass foamed by common glass raw material | 20 | 20.8～21.6 | ≥4％ |
| the invention relates to foam glass which is foamed by taking glass as a raw material | 20 | 20.013～20.033 | ≤0.165％ |
other technical performance indicators are shown in table 4:
TABLE 4
| numerical value of technical Performance index | Numerical value | measured in fact |
| Bulk density | ≤150kg/m3 | 140kg/m3 |
| Coefficient of thermal conductivity | ≤0.050W/m.K | 0.04W/m.K |
| Compressive strength | ≥0.8Mpa | 1.73Mpa |
| flexural strength | ≥0.7Mpa | 0.85Mpa |
| Water absorption rate | ≤0.5％ | 0.1％ |
Claims (1)
1. A preparation method of borosilicate foam glass raw material glass is characterized by comprising the following steps:
(1) Preparing materials: weighing various raw materials according to a designed material recipe, and uniformly mixing in a unified mixer; wherein the raw materials comprise the following components in percentage by mass:
SiO263.5；
B2O3 8.2；
Al2O3 6.5；
Li2O 0.3；
Na2O 11.2；
K2O 2.8；
MgO 2.0；
CaO 2.6；
BaO 0.4；
TiO2 1.2；
Fe2O3 0.3；
MnO20.7；
SO3 0.3；
(2) Melting: heating the prepared raw materials at high temperature to form uniform bubble-free glass liquid; melting glass in a melting furnace, wherein the melting furnace adopts an energy-saving glass industrial flame tank furnace, the mixture is melted in the tank furnace, and open fire is heated at the upper part of the liquid level of the glass; the melting temperature of the glass is 1300-1600 ℃; melting into flowing glass liquid, entering a material channel through a working part of the tank furnace, and gradually reducing the glass liquid from high temperature to a suitable forming temperature;
(3) Molding: converting the melted glass liquid into a solid product with a fixed shape; the glass is firstly changed into a plastic state from a viscous liquid state and then is changed into a brittle solid state; blowing a glass tube by adopting a feeding vertical drawing method, and performing water quenching forming;
(4) water quenching: supplying water by using a circulating cooling water system, quenching the water to be below 70 ℃, crushing the water into particles, and fishing out the particles by using a scraper fishing machine;
(5) conveying and water controlling: granular raw material glass fished out by the material fishing machine is flatly paved on the way of conveying to a storage bin by a conveyor belt, partial hot air is recovered by a waste heat recovery device of the industrial kiln, hot air with the temperature of 250-300 ℃ is uniformly blown onto the conveyor belt through an air pipe, and moisture adsorbed on the glass is dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451633.8A CN107056050B (en) | 2017-06-15 | 2017-06-15 | Preparation method of special raw material glass for high-performance borosilicate foam glass |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451633.8A CN107056050B (en) | 2017-06-15 | 2017-06-15 | Preparation method of special raw material glass for high-performance borosilicate foam glass |
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| Publication Number | Publication Date |
|---|---|
| CN107056050A CN107056050A (en) | 2017-08-18 |
| CN107056050B true CN107056050B (en) | 2019-12-10 |
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| CN201710451633.8A Expired - Fee Related CN107056050B (en) | 2017-06-15 | 2017-06-15 | Preparation method of special raw material glass for high-performance borosilicate foam glass |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107574354A (en) * | 2017-09-18 | 2018-01-12 | 张家港伟宇工艺玻璃制品有限公司 | A kind of high-strength composite artistic glass preparation method |
| CN107986634A (en) * | 2017-12-16 | 2018-05-04 | 常熟市赛蒂镶嵌玻璃制品有限公司 | The high method for glass preparation of security system |
| CN112811822B (en) * | 2021-02-08 | 2023-03-17 | 廊坊新时代化工建材有限公司 | High borosilicate foam glass and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306920A (en) * | 2008-06-30 | 2008-11-19 | 浙江振申绝热科技有限公司 | Production raw material of foamed glass and process for producing foamed glass |
| CN101531462A (en) * | 2009-04-10 | 2009-09-16 | 北京工业大学 | Method for preparing borosilicate foam glass |
| CN203037026U (en) * | 2013-01-22 | 2013-07-03 | 安徽汇昌新材料有限公司 | Cullet drying device for foam glass production |
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2017
- 2017-06-15 CN CN201710451633.8A patent/CN107056050B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101306920A (en) * | 2008-06-30 | 2008-11-19 | 浙江振申绝热科技有限公司 | Production raw material of foamed glass and process for producing foamed glass |
| CN101531462A (en) * | 2009-04-10 | 2009-09-16 | 北京工业大学 | Method for preparing borosilicate foam glass |
| CN203037026U (en) * | 2013-01-22 | 2013-07-03 | 安徽汇昌新材料有限公司 | Cullet drying device for foam glass production |
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| CN107056050A (en) | 2017-08-18 |
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