CN108395105A - A method of preparing devitrified glass using copper silver tailing and cullet - Google Patents
A method of preparing devitrified glass using copper silver tailing and cullet Download PDFInfo
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- CN108395105A CN108395105A CN201810506966.0A CN201810506966A CN108395105A CN 108395105 A CN108395105 A CN 108395105A CN 201810506966 A CN201810506966 A CN 201810506966A CN 108395105 A CN108395105 A CN 108395105A
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- Prior art keywords
- glass
- tailing
- cullet
- copper silver
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Classifications
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- 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
- C03C10/00—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition
- C03C10/0063—Devitrified glass ceramics, i.e. glass ceramics having a crystalline phase dispersed in a glassy phase and constituting at least 50% by weight of the total composition containing waste materials, e.g. slags
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B32/00—Thermal after-treatment of glass products not provided for in groups C03B19/00, C03B25/00 - C03B31/00 or C03B37/00, e.g. crystallisation, eliminating gas inclusions or other impurities; Hot-pressing vitrified, non-porous, shaped glass products
- C03B32/02—Thermal crystallisation, e.g. for crystallising glass bodies into glass-ceramic articles
-
- 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
- C03C1/002—Use of waste materials, e.g. slags
Abstract
The invention discloses a kind of methods preparing devitrified glass using copper silver tailing and cullet, by copper silver tailing, cullet, modification agent and Nucleating Agent, glass melts are melted to obtain in heating, flow into mold, demoulding is put into coring in stove, crystallization, annealing cooling after cooling, polishing is polished to product surface, obtains finished product devitrified glass.The method of the present invention comprehensively utilizes two kinds of waste resources of copper silver tailing and cullet, waste utilization rate is high, preparation method is simple, raw material sources are convenient, of low cost, devitrified glass obtained has excellent bending strength and Mohs' hardness, and has higher added value, new approach is provided for the comprehensive utilization of resources of copper silver tailing and cullet, there is significant economic and social profit.
Description
Technical field
The invention belongs to building material technical fields, are related to a kind of side preparing devitrified glass using industrial residue as raw material
Method, and in particular to a method of preparing devitrified glass using copper silver tailing and cullet.
Background technology
Devitrified glass is also known as glass ceramics, and being will be added with the basic glass of the specific composition of Nucleating Agent (or being not added with Nucleating Agent)
It is mutually equally distributed compound with glass to contain a large amount of crystallite phases by one kind that controlling crystallizing is prepared during heating for glass
Material.Devitrified glass has the characteristics that no brittleness, intensity are high, chemical stability is good, thermal stability and hardness are relatively high, at
For a kind of unique new material.
In the production process of devitrified glass, by control its at be grouped as, the conditions such as grain size, crystallization degree, can
Obtain the entirely different devitrified glass of physical and chemical properties.Devitrified glass has been widely used in because of its unique performance
The fields such as electronics, medical treatment, building, machinery, Aerospace Engineering.
China's copper mine is based on copper-sulphide ores, and Associated Constituents, such as gold, silver, lead, zinc, sulphur, molybdenum, bismuth altogether in copper deposit
Valuable element, comprehensive utilization value are big.The silver-colored yield in China 32.5% comes from copper deposit.With the industrialized rapid hair in China
Exhibition, the demand of mineral resources sharply increase, and have a large amount of copper mine to be produced and smelt every year, while also generating a large amount of copper silver
Tailing.Currently, being mostly to establish Tailings Dam to carry out concentration stockpiling to tailing for the processing of copper silver tailing, not only cause environment dirty
Dye, more brings the serious wasting of resources.Copper silver comprehensive utilization of tailing is concentrated mainly at present and makees cement, brick etc. using manufacture and builds
Material or ornament materials are built, value-added content of product is relatively low.
Currently, glass has been widely used in daily life, the consumption of glass is also with scientific and technical rapid hair
It opens up and increases substantially.Resulting cullet also reaches surprising quantity, and China's house refuse annual output in 2017 is more than 400,000,000
Ton, it is estimated that wherein cullet content is about 2%, close to 8,000,000 tons.Cullet returns in world economy developed country at present
Receive, classify, sorting, using etc. and having formed more perfect system, but cost recovery is higher, and product be mainly plate glass,
Domestic glass Bottle ＆ Can and glass block etc., added value of product is relatively low.
As Chinese patent application CN107522405A (publication date is on December 29th, 2017) discloses a kind of silver-colored tail of utilization
The method that mine produces foam glass, the method are：Silver-colored tailing is subjected to dispensing, the required frit formed is obtained, by the glass
Foam glass raw material is obtained after the melting of glass material, water quenching, the glass clinker is burnt into after foaming agent mixes, annealing obtains
Foam glass.
A kind of copper tailing is utilized as Chinese patent application CN107673610A (publication date be on 2 9th, 2018) is disclosed
The method for producing foam glass, the method are：Copper tailing is subjected to dispensing, the required frit formed is obtained, by the glass
Foam glass raw material is obtained after material melting, water quenching, the glass clinker is burnt into after foaming agent mixes, annealing is steeped
Foam glass.
As Chinese patent application CN107673606A (publication date be on 2 9th, 2018) disclose it is a kind of micro- using glass
Cullet powder and corresponding material are mixed into powder by the method and device of pearl using cullet powder or glass microballoon powder as raw material
Powder mixture is made material, high temperature beading by last mixture through spray material port and lance combustion flame, and collection device is collected again through whirlwind
After separator is separated into glass microballoon water quenching powder, then its drying is dry, separator separation several times, into dedusting
Collection device obtains glass microballoon.
Although copper tailing, silver-colored tailing and cullet can be effectively treated in above-mentioned existing method, utilization rate is low, and institute
Added value of product it is relatively low, the solid waste species of processing are single, it is difficult to improve copper silver tailing and cullet recycling
Economic benefit in the process.
Invention content
In view of this, the purpose of the present invention is to provide a kind of sides preparing devitrified glass using copper silver tailing and cullet
Method, while copper silver tailing and cullet rationally is utilized, to improve the recycling rate of copper silver tailing and cullet.
Specifically, the method that the utilization of the present invention prepares devitrified glass using copper silver tailing and cullet, including following steps
Suddenly：
(1) dispensing：The raw material that the method utilizes includes copper silver tailing, cullet, modification agent, Nucleating Agent；The copper silver
The content of tailing is 50~60%, and the content of the cullet is 20~25%, and the content of the modification agent is 20~30%, institute
The content for stating Nucleating Agent is 0~2%, and the content is mass percentage；
Wherein, the chemical composition that above-mentioned copper silver tailing includes is calculated by mass percentage, including：55~60% titanium dioxide
Silicon, 10~15% aluminium oxide, 15~18% calcium oxide, 0~1% potassium oxide, 0~1% sodium oxide molybdena, 10~15%
Iron oxide, 0~1% magnesia, 0~1% titanium dioxide, 0~1% zinc oxide, the contents of other ingredients be 1% with
Under；Preferably, copper silver tailing granularity is 100 mesh or more.
The chemical composition that above-mentioned cullet includes is calculated by mass percentage, including：70~85% silica, 2~
5% aluminium oxide, 5~10% calcium oxide, 12~16% sodium oxide molybdena, 0~2% magnesia, 0~1% potassium oxide,
The content of its ingredient is 1% or less；Preferably, cullet granularity is 50 mesh or more.
Above-mentioned modification agent is made of one or more in quartz sand, barium carbonate, calcite, zinc oxide, potassium feldspar, including
Chemical composition be calculated by mass percentage, including：40~50% silica, 25~35% calcium oxide, 10~15%
Barium monoxide, 8~12% zinc oxide, 0~1% alundum (Al2O3), 0~1% di-iron trioxide, 0~1% oxidation
The content of magnesium, 0~1% potassium oxide, 0~1% sodium oxide molybdena, other ingredients is 1% or less；Preferably, modification agent granularity is
It is more than 200 mesh.
Above-mentioned Nucleating Agent is made of one or more in titanium dioxide, calcirm-fluoride, zirconium oxide, phosphorus pentoxide；It is preferred that
, Nucleating Agent granularity is 200 mesh or more.
(2) melt：Copper silver tailing, cullet, modification agent are uniformly mixed with Nucleating Agent, heating is melted and is sufficiently stirred,
Obtain glass melts；Wherein, fusion temperature is preferably maintained at 1550~1600 DEG C；
In above-mentioned mixed process, mixed using V-type batch mixer.
During above-mentioned melt, soaking time is 3 hours (h) or more.
During above-mentioned melt, stirred evenly using stirring slurry.
(3) die-filling：Glass melts are poured into mold, 400 are cooled to the cooling velocity of 50~80 DEG C/min (min)
~500 DEG C, then be cooled to room temperature with the cooling velocity for being no more than 20 DEG C/min, form glass；
In above-mentioned die-filling technique, mould therefor is graphite jig or sprays the heat-resisting steel mold of releasing agent.
(4) coring：It is put into stove after glass is demoulded, 750~800 DEG C is warming up to the heating speed of 8~15 DEG C/min
Section, and keep the temperature 1~1.5h；
It is placed in above-mentioned nucleating course, after demoulding in the high temperature resistants materials such as aluminium oxide, zirconium oxide or silicon carbide boron plate, glass
It is separated with high temperature paper between glass and refractory slab.
(5) crystallization：950~1000 DEG C are warming up to the heating speed of 5~8 DEG C/min, and keeps the temperature 1~3h；
(6) it anneals：Cooling velocity to be no more than 15 DEG C/min is cooled to 500 DEG C hereinafter, again to be no more than 10 DEG C/min
Cooling velocity be cooled to room temperature, come out of the stove；
(7) grinding and polishing：Polishing is polished to product surface, obtains finished product devitrified glass.
Compared with the existing technology, method of the invention has the following advantages that：
The intensity of lithotome, wearability, acidproof, alkaline-resisting, chemically-resistant is rotten with being better than for devitrified glass prepared by the present invention
The performances such as erosion, and there is no radioactivity, added value is high, and Billy is lower with industrial chemicals production devitrified glass cost.
Cullet is added to solve the problems, such as that copper silver tailings glass provides new approach in the present invention in the feed,
The production cost for greatly reducing devitrified glass will bring significant economic and social profit.
Specific implementation mode
Technical solution in the embodiment of the present invention is described in detail below, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
Material as used in the following examples can be obtained unless otherwise specified by free market.
The main component (mass percent wt%) of copper silver tailing, cullet, modification agent used in 1 embodiment of table
| Material name | Al2O3 | SiO2 | Fe2O3 | CaO | MgO | K2O | Na2O | TiO2 | BaO | ZnO | It is other |
| Copper silver tailing | 10-15 | 55-60 | 10-15 | 15-18 | 0-1 | 0-1 | 0-1 | 0-1 | - | 0-1 | 0-1 |
| Cullet | 2-5 | 70-75 | - | 5-10 | 0-2 | 0-1 | 12-16 | - | - | - | 0-1 |
| Modification agent | 0-1 | 40-50 | 0-1 | 25-35 | 0-1 | 0-1 | 0-1 | - | 10-15 | 8-12 | 0-1 |
Embodiment 1
The raw material of 2 embodiment 1 of table forms
| Title | Ratio (wt%) |
| Copper silver tailing | 58 |
| Cullet | 20 |
| Modification agent | 21 |
| Nucleating Agent | 1 |
It is formed according to above-mentioned raw material and microcrystal glass plate is prepared using following step：
(1) copper silver tailing is crushed, obtains the particulate material of 100 mesh of granularity or more；
(2) cullet is crushed, obtains the particulate material of 50 mesh of granularity or more；
(3) the modification agent granularity used is more than 200 mesh；
(4) the Nucleating Agent granularity used is more than 200 mesh；
(5) it will weigh after copper silver tailing, cullet, modification agent, the drying of Nucleating Agent pellet, mix in proportion；
(6) mixed raw material heating fusing, fusion temperature are maintained at 1550 DEG C or more, keep the temperature 3h or more, obtain glass
Melt；
(7) glass melts discharge port pours into mold, and 400~500 DEG C are cooled to the cooling velocity of 50~80 DEG C/min, then
Cooling velocity to be no more than 20 DEG C/min is cooled to room temperature, and obtains glass；
(8) 750~800 DEG C of sections are warming up to the heating speed of 8~15 DEG C/min, keep the temperature 1~1.5h；
(9) 950~1000 DEG C of heat preservations are warming up to the heating speed of 5-8 DEG C/min, keep the temperature 1~3h；
(10) 500 DEG C are cooled to hereinafter, again to be no more than the cold of 10 DEG C/min to be no more than the cooling velocity of 15 DEG C/min
But speed is cooled to room temperature, and is come out of the stove；
(11) material obtained is microcrystal glass plate, and the microcrystal glass plate that will be cooled to room temperature carries out cutting sanding and polishing,
Obtain finished product microcrystal glass plate.
Embodiment 2
The raw material of 3 embodiment 2 of table forms
| Title | Ratio (wt%) |
| Copper silver tailing | 54 |
| Cullet | 20 |
| Modification agent | 25 |
| Nucleating Agent | 1 |
It is formed according to above-mentioned raw material and microcrystal glass plate is prepared using following step：
(1) copper silver tailing is crushed, obtains the particulate material of 100 mesh of granularity or more；
(2) cullet is crushed, obtains the particulate material of 50 mesh of granularity or more；
(3) the modification agent granularity used is more than 200 mesh；
(4) the Nucleating Agent granularity used is more than 200 mesh；
(5) it will weigh after copper silver tailing, cullet, modification agent, the drying of Nucleating Agent pellet, mix in proportion；
(6) mixed raw material heating fusing, fusion temperature are maintained at 1550 DEG C or more, keep the temperature 3h or more, obtain glass
Melt；
(7) glass melts discharge port pours into mold, and 400~500 DEG C are cooled to the cooling velocity of 50~80 DEG C/min, then
Cooling velocity to be no more than 20 DEG C/min is cooled to room temperature, and obtains glass；
(8) 750~800 DEG C of sections are warming up to the heating speed of 8~15 DEG C/min, keep the temperature 1~1.5h；
(9) 950~1000 DEG C of heat preservations are warming up to the heating speed of 5~8 DEG C/min, keep the temperature 1~3h；
(10) 500 DEG C are cooled to hereinafter, again to be no more than the cold of 10 DEG C/min to be no more than the cooling velocity of 15 DEG C/min
But speed is cooled to room temperature, and is come out of the stove；
(11) material obtained is microcrystal glass plate, and the microcrystal glass plate that will be cooled to room temperature carries out cutting sanding and polishing,
Obtain finished product microcrystal glass plate.
Embodiment 3
The raw material of 4 embodiment 3 of table forms
| Title | Ratio (wt%) |
| Copper silver tailing | 50 |
| Cullet | 23 |
| Modification agent | 26 |
| Nucleating Agent | 1 |
It is formed according to above-mentioned raw material and microcrystal glass plate is prepared using following step：
(1) copper silver tailing is crushed, obtains the particulate material of 100 mesh of granularity or more；
(2) cullet is crushed, obtains the particulate material of 50 mesh of granularity or more；
(3) the modification agent granularity used is more than 200 mesh；
(4) the Nucleating Agent granularity used is more than 200 mesh；
(5) it will weigh after copper silver tailing, cullet, modification agent, the drying of Nucleating Agent pellet, mix in proportion；
(6) mixed raw material heating fusing, fusion temperature are maintained at 1550 DEG C or more, keep the temperature 3h or more, obtain glass
Melt；
(7) glass melts discharge port pours into mold, and 400~500 DEG C are cooled to the cooling velocity of 50~80 DEG C/min, then
Cooling velocity to be no more than 20 DEG C/min is cooled to room temperature, and obtains glass；
(8) 750~800 DEG C of sections are warming up to the heating speed of 8~15 DEG C/min, keep the temperature 1~1.5h；
(9) 950~1000 DEG C of heat preservations are warming up to the heating speed of 5-8 DEG C/min, keep the temperature 1~3h；
(10) 500 DEG C are cooled to hereinafter, again to be no more than the cold of 10 DEG C/min to be no more than the cooling velocity of 15 DEG C/min
But speed is cooled to room temperature, and is come out of the stove；
(11) material obtained is microcrystal glass plate, and the microcrystal glass plate that will be cooled to room temperature carries out cutting sanding and polishing,
Obtain finished product microcrystal glass plate.
The performance of devitrified glass made from 5 Examples 1 to 3 of table
For those skilled in the art, it is clear that invention is not limited to the details of the above exemplary embodiments, and not
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter from
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended right
It is required that rather than above description limit, it is intended that all changes that will be fallen within the meaning and scope of the equivalent requirements of the claims
Change is included within the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiment being appreciated that.
Claims (10)
1. a kind of method preparing devitrified glass using copper silver tailing and cullet, which is characterized in that include the following steps：
S1, raw material is weighed by metering ratio, the raw material includes the useless glass of the copper silver tailing of 50~60wt%, 20~25wt%
The Nucleating Agent of glass, the modification agent of 20~30wt%, 0~2wt%；
S2, the raw material is uniformly mixed, heating is melted and is sufficiently stirred, and glass melts are obtained；
S3, glass melts are flowed into mold, it is cooling；
S4, coring in stove will be put into after the glass demoulding in mold；
Temperature is adjusted after the completion of S5, coring continues crystallization；
It anneals after the completion of S6, crystallization；
S7, polishing is polished to product surface, obtains finished product devitrified glass.
2. according to the method described in claim 1, it is characterized in that, the copper silver tailing granularity is 100 mesh or more, by quality
Percentages, including：55~60% silica, 10~15% aluminium oxide, 15~18% calcium oxide, 0~1% oxygen
Change potassium, 0~1% sodium oxide molybdena, 10~15% iron oxide, 0~1% magnesia, 0~1% titanium dioxide, 0~1%
The content of zinc oxide, other ingredients is 1% or less.
3. according to the method described in claim 1, it is characterized in that, the cullet granularity is 50 mesh or more, by quality hundred
Divide than meter, including：70~85% silica, 2~5% aluminium oxide, 5~10% calcium oxide, 12~16% oxidation
The content of sodium, 0~2% magnesia, 0~1% potassium oxide, other ingredients is 1% or less.
4. according to the method described in claim 1, it is characterized in that, the modification agent is granularity be 200 mesh or more industry
With one or more compositions in quartz sand, barium carbonate, calcite, zinc oxide, potassium feldspar.
5. according to the method described in claim 1, it is characterized in that, the Nucleating Agent is the titanium dioxide of 200 mesh of granularity or more
One or more compositions in titanium, calcirm-fluoride, zirconium oxide, phosphorus pentoxide.
6. according to the method described in claim 1, it is characterized in that, in step S2, fusion temperature is 1550~1600 DEG C of heat preservations
3h or more.
7. according to the method described in claim 1, it is characterized in that, in step S3, cooling process conditions are：With 50~80
DEG C/cooling velocity of min is cooled to 400~500 DEG C, then is cooled to room temperature with the cooling velocity for being no more than 20 DEG C/min.
8. according to the method described in claim 1, it is characterized in that, in step S4, the process conditions of coring are：With 8~15 DEG C/
The heating speed of min is warming up to 750~800 DEG C, and keeps the temperature 1~1.5h.
9. according to the method described in claim 1, it is characterized in that, in step S5, the process conditions of crystallization are：With 5~8 DEG C/
The heating speed of min is warming up to 950~1000 DEG C, and keeps the temperature 1~3h.
10. according to the method described in claim 1, it is characterized in that, in step S6, the process conditions of annealing are：To be no more than
The cooling velocity of 15 DEG C/min is cooled to 500 DEG C hereinafter, being cooled to room temperature again with the cooling velocity for being no more than 10 DEG C/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810506966.0A CN108395105A (en) | 2018-05-24 | 2018-05-24 | A method of preparing devitrified glass using copper silver tailing and cullet |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109354416A (en) * | 2018-12-07 | 2019-02-19 | 李异洪 | It is a kind of to utilize the once sintered process for preparing devitrified glass of lithium porcelain stone tailing |
| CN111908789A (en) * | 2020-07-25 | 2020-11-10 | 广州利粤玻璃有限公司 | Preparation method of high-strength curved curtain wall glass |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1246454A (en) * | 1998-09-02 | 2000-03-08 | 东北大学钎具开发研究中心 | Process for preparing decorative devitrified glass tile and its products |
| CN102079625A (en) * | 2010-12-07 | 2011-06-01 | 淮安乔氏建材发展有限公司 | Microcrystal glass manufactured by using tailing solid waste and manufacturing method thereof |
| CN102849948A (en) * | 2012-09-29 | 2013-01-02 | 济南大学 | Waste glass slag reutilization method and obtained glass |
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2018
- 2018-05-24 CN CN201810506966.0A patent/CN108395105A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1246454A (en) * | 1998-09-02 | 2000-03-08 | 东北大学钎具开发研究中心 | Process for preparing decorative devitrified glass tile and its products |
| CN102079625A (en) * | 2010-12-07 | 2011-06-01 | 淮安乔氏建材发展有限公司 | Microcrystal glass manufactured by using tailing solid waste and manufacturing method thereof |
| CN102849948A (en) * | 2012-09-29 | 2013-01-02 | 济南大学 | Waste glass slag reutilization method and obtained glass |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109354416A (en) * | 2018-12-07 | 2019-02-19 | 李异洪 | It is a kind of to utilize the once sintered process for preparing devitrified glass of lithium porcelain stone tailing |
| CN111908789A (en) * | 2020-07-25 | 2020-11-10 | 广州利粤玻璃有限公司 | Preparation method of high-strength curved curtain wall glass |
| CN111908789B (en) * | 2020-07-25 | 2022-05-13 | 广州利粤玻璃有限公司 | Preparation method of high-strength curved curtain wall glass |
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Application publication date: 20180814 |