CN103771712A - Process for preparing glass ceramics from granite tailings by float process and special tin bath for same - Google Patents
Process for preparing glass ceramics from granite tailings by float process and special tin bath for same Download PDFInfo
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- CN103771712A CN103771712A CN201310734955.5A CN201310734955A CN103771712A CN 103771712 A CN103771712 A CN 103771712A CN 201310734955 A CN201310734955 A CN 201310734955A CN 103771712 A CN103771712 A CN 103771712A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention discloses a process for preparing glass ceramics from granite tailings by a float process and a special tin bath for the same. The glass ceramics comprise the following components by weight percent: 5-10% of CaO, 5-10% of MgO, 20-30% of Al2O3, 40-50% of SiO2, 2-5% of Na2O, 2-5% of K2O, 2-5% of TiO2, 0.5-1% of ZrO2 and 0.5-1.5% of BaCO3, wherein the component properties meet the requirements of the float process. The process comprises the following steps: batch preparing, melting, crystallizing and annealing. The invention also discloses the special tin bath for preparing the glass ceramics by the float process. The tin bath has a corresponding structure and specific temperature distribution. The process has the beneficial effects that the glass ceramics are prepared with granite tailings as the main raw materials, thus solving the problem, namely how to treat industrial wastes and eliminating environmental pollution caused by industrial waste residues; compared with traditional sintering processes and rolling processes, the process for preparing the glass ceramics from slag by the float process has strong continuous production capacity and dispenses with back-end grinding and polishing procedures, thus obviously reducing the production cost and improving the production efficiency.
Description
Technical field
The present invention relates to a kind of devitrified glass and preparation technology thereof, be specially and adopt floating process to prepare method and the special molten tin bath thereof of devitrified glass take grouan mine tailing as main raw material, belong to the comprehensive utilization of trade waste.
Background technology
Devitrified glass is take the glass of specific composition as basis, and what obtain through heat treated both contains the material that glassy phase contains crystalline phase.Heat treatment process is wherein called crystallization process, and devitrified glass intensity and hardness are higher, and thermal expansivity is very little again, and application prospect is very extensive.
Along with expanding economy, increasing to the demand of coal, rare earth, its output increases day by day, and the consequent is that rare trade waste such as mine tailing, coal gangue that selects constantly increases.These wastes not only take a large amount of soils, and water resources and soil to periphery causes severe contamination.Utilize the crystallizing glass sheet material of abandoned mine slag as raw material production, the pure texture of color and luster, like mellow and full, becomes the preferred material of building decoration.The devitrified glass that uses grouan to prepare for main raw material is the one of cinder microcrystalline glass, cinder microcrystalline glass has utilized a large amount of mine tailings or industrial residue as raw material, its production economizes on resources relatively, and solved a difficult problem how to process trade waste, be the optimal selection that substitutes lithotome and the brickmaking of part porcelain.
Conventionally the production technique of cinder microcrystalline glass mainly contains two kinds of sintering process and rolling processes.Sintering process is first the glass metal cold quenching of founding to be become to glass cullet, and then is put into and in mould, carries out crystallization and anneal, and the yield rate of this method product is low and need two pyroprocesses (glass smelting, micritization processing), and production energy consumption is large, cost is high; Rolling process is to carry out crystallization and annealing after the glass metal of founding being pressed into sheet glass at a certain temperature with pair roller again, and the continuous throughput of rolling process is higher, but and sintering process exist equally crystallization after product deformation large, the shortcoming that post-production cost is high.Subsequently, have report to adopt floating process to prepare cinder microcrystalline glass, but existing floating process can not mate with the characteristic of cinder microcrystalline glass, such as the material property of cinder microcrystalline glass is very short, large in the difficulty of molten tin bath kernelised; The crystallization of devitrified glass is difficult to control, and is easy in the conglomeration of molten tin bath leading portion.Therefore, so far there are no the actual production of float glass process cinder microcrystalline glass.
Summary of the invention
The technical problem to be solved in the present invention is for present cinder microcrystalline glass characteristic, a kind of energy-saving and environmental protection, high-level efficiency, grouan tailing microcrystal glass floating preparation process and the molten tin bath for microcrystal glass plate coring and crystallization are cheaply provided, overcome the poor defect of cinder microcrystalline glass and floating process matching, and can realize the coring and the crystallization that in the molten tin bath of finite length, complete cinder microcrystalline glass.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of grouan tailing microcrystal glass, it comprises the composition of following weight percentage: CaO 5%～10%, MgO 5%～10%, Al
2o
320%～30%, SiO
240%～50%, Na
2o 2%～5%, K
2o 2%～5%, TiO
22%～5%, ZrO
20.5% ~ 1%, BaCO
30.5% ~ 1.5%.
As further optimization of the present invention, described grouan tailing microcrystal glass comprises the composition of following weight percentage: CaO 6%～8%, MgO 7%～9%, Al
2o
325%～28%, SiO
245%～48%, Na
2o 3%～4%, K
2o 3%～4%, TiO
23%～4%, ZrO
20.5% ~ 1%, BaCO
30.5% ~ 1.5%.
Further, the devitrified glass viscosity in the time of 1300 ℃ that meets above two kinds of compositions is 250 ~ 380 P, and 1150 ℃ time, viscosity is 2000 ~ 3000 P, and the variation of the viscosity with temperature of this composition devitrified glass is not obvious, meets float process processing requirement.
The present invention also provides a kind of floating preparation process of grouan tailing microcrystal glass, and its main raw material is grouan mine tailing, dicalcium powder, magnesite, albite, wherein SiO
2introduced by grouan mine tailing, MgO is introduced by magnesite, and CaO is introduced by dicalcium powder, Al
2o
3introduced by albite, other components are that industrial chemicals is introduced.
Further, the floating preparation process of described grouan tailing microcrystal glass, it comprises the following steps:
1) batching: choose above raw mineral materials, to its pulverize, screening, deironing processing, control grouan mine tailing order granularity and be greater than 40 orders, within the scope of 50 ~ 80 orders, proportion is not less than 80%, the particle diameter control of other raw mineral materialss is identical with electric melting furnace frit, by making corresponding powder after above processing, then take according to weight ratio, after mixing, make glass batch, for preventing that later stage glass metal from reacting with the tin liquor in molten tin bath, must carry out deironing processing to raw material with electro-magnet, the Fe content in control admixtion is lower than 0.03%;
2) admixtion is thrown in electric melting furnace and melted, temperature of fusion is 1500 ℃ ~ 1600 ℃, fusing time control 3 ~ 4h, then the settling pond in the cooling end He Liao road of melting furnaces completes homogenizing and the clarification of glass metal, the temperature of controlling material road end is 1100 ℃ ~ 1200 ℃, obtain uniform component, without visible bubble in bubble qualified glass metal, described material road end is the position of binder road and molten tin bath;
3) by step 2) glass metal that obtains guides in the molten tin bath of corresponding devitrified glass by lip tile, completes coring and the crystallization of glass; Wherein controlling nucleation temperature is 650 ~ 680 ℃, and crystallization temperature is 840 ~ 860 ℃;
4) sheet glass is annealed, then cutting.
The present invention also provides devitrified glass coring and the special molten tin bath of crystallization in a kind of floating preparation process of grouan tailing microcrystal glass, and it comprises cell body, edge machine, protection gas system, heating system; Described cell body is made up of refractory materials and steel shell, the temperature province of described cell body redesigns, be divided into and shakeout district, quench zone, coring district, heating zone, crystallization region and curing cooling zone, described to shakeout section length control be 800mm, and quench zone length control is 1700mm, and the control of coring section length is 2500mm, the control of heating zone length is 1500mm, the control of crystallization region length is 1500mm, and solidifying cooling zone length control is 2000mm, in order to complete coring and the crystallization of devitrified glass.
Further, described tin liquor directly contacts with the bottom land brick in cell body.
Further, described edge machine is to use external force by the mechanical means of glass metal attenuate, and identical with the edge machine design using in present float glass, ratio can be dwindled in proportion by molten tin bath specification, for throttling, draw thin, long-pending thick and control raw sheet trend.
Further, described protection gas system comprises nitrogen pipeline, hydrogen pipeline and connecting system, and what wherein cell body temperature was the highest shakeouts region, controls the long-pending H that consists of of its shielding gas
2: 7%, N
2: 92%, CH
4: 1%, molten tin bath end solidifies cooling zone, controls the long-pending H that consists of of its shielding gas
2: 7%, N
2: 92.7%, SO
2: 0.3%, the shielding gas of controlling other parts amasss and consists of H
2: 3%, N
2: 97%.
As further optimization of the present invention, described cell body is narrow chute design, and the width that molten tin bath latter half sheet glass directly covers tin liquor is made as 1 meter, has greatly saved tin liquor consumption.
As further optimization of the present invention, because this molten tin bath length is conventional molten tin bath 2 ~ 3 times, so this molten tin bath has again designed and cut apart barricade and weir at different positions, control tin liquor convection current, do not cause glass to produce defect because of tin liquor convection current.
As further optimization of the present invention, described in to shakeout the preferred SiC of district's heating unit be heating member.
The beneficial effect that adopts technique scheme to produce is:
(1) preparation of devitrified glass of the present invention selects a large amount of grouan mine tailings as main raw material, and its production economizes on resources relatively, and has solved a difficult problem how to process trade waste, turns waste into wealth, and has eliminated the pollution of industrial residue to environment;
(2) raw materials for production of devitrified glass of the present invention substitute lithotome, clay Mineral resources and the brickmaking of part porcelain, environment, the ecological damage of having avoided mining to cause with mine tailing waste residue;
(3) production of grouan tailing microcrystal glass of the present invention adopts floating preparation process, its yield rate is more than 95%, and present calendering technology yield rate is 85% ~ 93%, sintering process production technique yield rate is only 65% ~ 80%, and adopts floating process to also help raising industrial scale;
(4) adopt calendering production technique need to be on the sheet material of production department grinding 1 ~ 3mm, and the microcrystal glass plate surface finish that the production of grouan tailing microcrystal glass of the present invention adopts floating preparation process to prepare is high, do not need the polishing processing in later stage, save a large amount of costs, improved production efficiency;
(5) the present invention also provides devitrified glass floating preparation process special molten tin bath, molten tin bath different sites is redesigned and cuts apart barricade and weir, and the temperature distribution of molten tin bath is redesigned, and is easy to effectively complete coring and the crystallization of devitrified glass; And this cell body is narrow chute design, and effective width is 1 meter, has greatly saved tin liquor consumption.
Accompanying drawing explanation
Fig. 1 is that the temperature province of molten tin bath of the present invention is divided schematic diagram (vertical view);
Fig. 2 is the left view of molten tin bath of the present invention.
In the accompanying drawings: 1 shakeouts district, 2 quench zones, 3 coring districts, 4 heating zones, 5 crystallization regions, 6 curing cooling zones, 7 weirs, 8 protection gas systems, 9 cell bodies.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment 1:
(1) cinder microcrystalline glass formulation selection following (wt%):
Granite 46%, magnesite 14%, albite 28.5%, dicalcium powder 7.5%, BaCO
30.5%, TiO
22.5%, ZrO
21%;
(2) according to compositing formula, first to each raw material pulverize, screening, deironing processing, control grouan mine tailing order granularity and be greater than 40 orders, within the scope of 50 ~ 80 orders, proportion is not less than 80%, the particle diameter control of other raw mineral materialss is identical with electric melting furnace frit; Then take corresponding raw mineral materials, make glass batch after mixing, in control admixtion, Fe content is lower than 0.03%;
(3) admixtion is thrown in electric melting furnace and melted, temperature of fusion is 1550 ℃, fusing time 3h, then carry out homogenizing and clarification, controlling material stage casing, road temperature is 1300 ℃, and the temperature of material road end is 1150 ℃, obtain uniform component, without visible bubble in bubble qualified glass metal; This glass metal is in the time of 1300 ℃, and viscosity is 324 P, in the time of 1150 ℃ of temperature, is 2406 P, and material property meets the requirement of floating process;
(4) glass metal is guided to by lip tile in the molten tin bath that is applicable to cinder microcrystalline glass, described tin groove structure and temperature province are divided signal as shown in Figure 1 and Figure 2, shakeout district's temperature and be controlled at 1180 ℃, in molten tin bath, complete coring and the crystallization of glass, the nucleation temperature of glass is 664 ℃, and crystallization temperature is 840 ℃;
(5) sheet glass is annealed, the microcrystal glass plate that the thickness of slab making is 7.4mm, its surfacing, in one square metre, thickness deviation is only 0.4mm, does not need grinding and polishing.
Embodiment 2:
(1) cinder microcrystalline glass formulation selection following (wt%):
Granite 48.7%, magnesite 14%, albite 26.5%, dicalcium powder 6.5%, BaCO
30.5%, TiO
23%, ZrO
20.8%;
(2) according to compositing formula, first to each raw material pulverize, screening, deironing processing, control grouan mine tailing order granularity and be greater than 40 orders, within the scope of 50 ~ 80 orders, proportion is not less than 80%, the particle diameter control of other raw mineral materialss is identical with electric melting furnace frit; Then take corresponding raw mineral materials, make glass batch after mixing, in control admixtion, Fe content is lower than 0.03%;
(3) admixtion is thrown in electric melting furnace and melted, temperature of fusion is 1580 ℃, fusing time 3.5h, then carry out homogenizing and clarification, controlling material stage casing, road temperature is 1300 ℃, and the temperature of material road end is 1180 ℃, obtain uniform component, without visible bubble in bubble qualified glass metal; This glass metal is in the time of 1300 ℃, and viscosity is 278 P, in the time of 1150 ℃ of temperature, is 2900 P, and material property meets the requirement of floating process;
(4) glass metal is guided to by lip tile in the molten tin bath that is applicable to cinder microcrystalline glass, described tin groove structure and temperature province are divided signal as shown in Figure 1 and Figure 2, shakeout district's temperature and be controlled at 1150 ℃, in molten tin bath, complete coring and the crystallization of glass, the nucleation temperature of glass is 680 ℃, and crystallization temperature is 857 ℃;
(5) sheet glass is annealed, the microcrystal glass plate that the thickness of slab making is 7.5mm, its surfacing, in one square metre, thickness deviation is only 0.5mm, does not need grinding and polishing.
Embodiment 3:
(1) cinder microcrystalline glass formulation selection following (wt%):
Granite 51.4%, magnesite 13%, albite 24.5%, dicalcium powder 7.5%, BaCO
30.5%, TiO
22.5%, ZrO
20.6%;
(2) according to compositing formula, first to each raw material pulverize, screening, deironing processing, control grouan mine tailing order granularity and be greater than 40 orders, within the scope of 50 ~ 80 orders, proportion is not less than 80%, the particle diameter control of other raw mineral materialss is identical with electric melting furnace frit; Then take corresponding raw mineral materials, make glass batch after mixing, in control admixtion, Fe content is lower than 0.03%;
(3) admixtion is thrown in electric melting furnace and melted, temperature of fusion is 1500 ℃, fusing time 4h, then carry out homogenizing and clarification, controlling material stage casing, road temperature is 1300 ℃, and the temperature of material road end is 1160 ℃, obtain uniform component, without visible bubble in bubble qualified glass metal; This glass metal is in the time of 1300 ℃, and viscosity is 270P, in the time of 1150 ℃ of temperature, is 2700 P, and material property meets the requirement of floating process;
(4) glass metal is guided to by lip tile in the molten tin bath that is applicable to cinder microcrystalline glass, described tin groove structure and temperature province are divided signal as shown in Figure 1 and Figure 2, shakeout district's temperature and be controlled at 1170 ℃, in molten tin bath, complete moulding and the crystallization of glass, the nucleation temperature of glass is 676 ℃, and crystallization temperature is 850 ℃;
(5) sheet glass is annealed, the microcrystal glass plate that the thickness of slab making is 7.6mm, its surfacing, in one square metre, thickness deviation is only 0.4mm, does not need grinding and polishing.
The above embodiment is only the preferred embodiments of the present invention, and is not the exhaustive of the feasible enforcement of the present invention.For persons skilled in the art, any apparent change of under the prerequisite that does not deviate from the principle of the invention and spirit, it having been done, within all should being contemplated as falling with claim protection domain of the present invention.
Claims (8)
1. a grouan tailing microcrystal glass, is characterized in that: the composition that comprises following weight percentage: CaO 5%～10%, MgO 5%～10%, Al
2o
320%～30%, SiO
240%～50%, Na
2o 2%～5%, K
2o 2%～5%, TiO
22%～5%, ZrO
20.5% ~ 1%, BaCO
30.5% ~ 1.5%.
2. a kind of grouan tailing microcrystal glass according to claim 1, is characterized in that: the composition that comprises following weight percentage: CaO 6%～8%, MgO 7%～9%, Al
2o
325%～28%, SiO
245%～48%, Na
2o 3%～4%, K
2o 3%～4%, TiO
23%～4%, ZrO
20.5% ~ 1%, BaCO
30.5% ~ 1.5%.
3. a kind of grouan tailing microcrystal glass according to claim 1 and 2, is characterized in that: described devitrified glass viscosity in the time of 1300 ℃ is 250～380 P, and 1150 ℃ time, viscosity is 2000～3000 P.
4. a floating preparation process for grouan tailing microcrystal glass as claimed in claim 1 or 2, is characterized in that: SiO
2introduced by grouan mine tailing, CaO is introduced by dicalcium powder, and MgO is introduced by magnesite, Al
2o
3introduced by albite, other components are that industrial chemicals is introduced.
5. the floating preparation process of grouan tailing microcrystal glass according to claim 4, is characterized in that: comprises the following steps,
1) batching: take raw material, to its pulverize, screening, deironing processing, control grouan mine tailing order granularity and be greater than 40 orders, within the scope of 50 ~ 80 orders, proportion is not less than 80%, the particle diameter control of other raw mineral materialss is identical with electric melting furnace frit, by making corresponding powder after above processing, then takes according to weight ratio, after mixing, make glass batch, in control admixtion, Fe content is lower than 0.03%;
2) admixtion is thrown in electric melting furnace and melted, temperature of fusion is 1500 ℃ ~ 1600 ℃, fusing time control 3 ~ 4h, then the settling pond in the cooling end He Liao road of melting furnaces completes homogenizing and the clarification of glass metal, the temperature of controlling material road end is 1100 ℃ ~ 1200 ℃, obtain uniform component, without visible bubble in bubble qualified glass metal;
3) by step 2) glass metal that obtains guides in the molten tin bath of corresponding devitrified glass by lip tile, completes coring and the crystallization of glass, and wherein controlling nucleation temperature is 650 ~ 680 ℃, and crystallization temperature is 840 ~ 860 ℃;
4) sheet glass is annealed, then cutting.
6. devitrified glass coring and the special molten tin bath of crystallization in the floating preparation process of a grouan tailing microcrystal glass as claimed in claim 5, it is characterized in that: described molten tin bath comprises cell body, edge machine, protection gas system and heating system, described cell body internal temperature region is divided into and shakeouts district by cutting apart wall, quench zone, coring district, heating zone, crystallization region and curing cooling zone, it is described that to shakeout section length control be 800mm, quench zone length control is 1700mm, the control of coring section length is 2500mm, the control of heating zone length is 1500mm, the control of crystallization region length is 1500mm, solidifying cooling zone length control is 2000mm.
7. devitrified glass coring according to claim 6 and the special molten tin bath of crystallization, is characterized in that: described protection gas system comprises nitrogen pipeline, hydrogen pipeline and connecting system, described in shakeout the long-pending H that consists of of district's shielding gas
2: 7%, N
2: 92%, CH
4: 1%, the long-pending H that consists of of described curing cooling zone shielding gas
2: 7%, N
2: 92.7%, SO
2: 0.3%, the long-pending H that consists of of described quench zone, coring district, heating zone and crystallization region shielding gas
2: 3%, N
2: 97%.
8. according to the devitrified glass coring described in claim 6 or 7 and the special molten tin bath of crystallization, it is characterized in that: described cell body is narrow chute design, in cell body, the width of sheet glass covering tin liquor is made as 1 meter.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104743884A (en) * | 2015-03-25 | 2015-07-01 | 河北省沙河玻璃技术研究院 | Glass ceramic and float producing process thereof |
| CN105130190A (en) * | 2015-09-08 | 2015-12-09 | 四川一名微晶科技股份有限公司 | Glass ceramics generated by taking granite tailings as main raw material, and preparation method for glass ceramics |
| CN106116119A (en) * | 2016-06-24 | 2016-11-16 | 河北省沙河玻璃技术研究院 | A kind of calcium and magnesium aluminum silicon building float glass process devitrified glass tin groove structure |
| CN106746677A (en) * | 2016-12-02 | 2017-05-31 | 河北省沙河玻璃技术研究院 | A kind of purplish-red glass-ceramic and its preparation method and application |
| CN106810079A (en) * | 2016-12-23 | 2017-06-09 | 四川名微晶科技股份有限公司 | The method that mica glass ceramic is prepared using granite waste residues |
| CN108585511A (en) * | 2018-05-17 | 2018-09-28 | 合肥协耀玻璃制品有限公司 | A kind of preparation method of high-performance devitrified glass |
| CN108751720A (en) * | 2018-07-03 | 2018-11-06 | 四川名微晶科技股份有限公司 | A kind of method that the utilization of granite Making Use of Tailings prepares devitrified glass |
| CN109704583A (en) * | 2019-02-25 | 2019-05-03 | 秦皇岛玻璃工业研究设计院有限公司 | A kind of devitrified glass and its production method |
| WO2020173425A1 (en) * | 2019-02-25 | 2020-09-03 | 秦皇岛玻璃工业研究设计院有限公司 | Glass ceramics, and production method and dedicated device therefor |
| CN113024121A (en) * | 2021-04-26 | 2021-06-25 | 赵国祥 | Microcrystalline glass plate production process |
| CN113149443A (en) * | 2021-05-06 | 2021-07-23 | 西南科技大学 | Method for preparing building glass ceramics from granite tailings and high-titanium slag |
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Cited By (15)
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|---|---|---|---|---|
| CN104743884B (en) * | 2015-03-25 | 2017-12-26 | 河北省沙河玻璃技术研究院 | A kind of devitrified glass and its float process technique |
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| CN105130190A (en) * | 2015-09-08 | 2015-12-09 | 四川一名微晶科技股份有限公司 | Glass ceramics generated by taking granite tailings as main raw material, and preparation method for glass ceramics |
| CN106116119B (en) * | 2016-06-24 | 2018-10-19 | 河北省沙河玻璃技术研究院 | A kind of calcium and magnesium aluminium silicon building float glass process devitrified glass tin groove structure |
| CN106116119A (en) * | 2016-06-24 | 2016-11-16 | 河北省沙河玻璃技术研究院 | A kind of calcium and magnesium aluminum silicon building float glass process devitrified glass tin groove structure |
| CN106746677A (en) * | 2016-12-02 | 2017-05-31 | 河北省沙河玻璃技术研究院 | A kind of purplish-red glass-ceramic and its preparation method and application |
| CN106810079A (en) * | 2016-12-23 | 2017-06-09 | 四川名微晶科技股份有限公司 | The method that mica glass ceramic is prepared using granite waste residues |
| CN108585511A (en) * | 2018-05-17 | 2018-09-28 | 合肥协耀玻璃制品有限公司 | A kind of preparation method of high-performance devitrified glass |
| CN108751720A (en) * | 2018-07-03 | 2018-11-06 | 四川名微晶科技股份有限公司 | A kind of method that the utilization of granite Making Use of Tailings prepares devitrified glass |
| CN109704583A (en) * | 2019-02-25 | 2019-05-03 | 秦皇岛玻璃工业研究设计院有限公司 | A kind of devitrified glass and its production method |
| WO2020173425A1 (en) * | 2019-02-25 | 2020-09-03 | 秦皇岛玻璃工业研究设计院有限公司 | Glass ceramics, and production method and dedicated device therefor |
| CN112811820A (en) * | 2019-02-25 | 2021-05-18 | 秦皇岛玻璃工业研究设计院有限公司 | Microcrystalline glass |
| CN113024121A (en) * | 2021-04-26 | 2021-06-25 | 赵国祥 | Microcrystalline glass plate production process |
| CN113024121B (en) * | 2021-04-26 | 2023-10-27 | 赵国祥 | Microcrystalline glass plate production process |
| CN113149443A (en) * | 2021-05-06 | 2021-07-23 | 西南科技大学 | Method for preparing building glass ceramics from granite tailings and high-titanium slag |
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