CN116375344A - Preparation method of microcrystalline glass with high proportion of gangue - Google Patents
Preparation method of microcrystalline glass with high proportion of gangue Download PDFInfo
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- CN116375344A CN116375344A CN202310346465.1A CN202310346465A CN116375344A CN 116375344 A CN116375344 A CN 116375344A CN 202310346465 A CN202310346465 A CN 202310346465A CN 116375344 A CN116375344 A CN 116375344A
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- gangue
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- 239000011521 glass Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000003245 coal Substances 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 42
- 239000002994 raw material Substances 0.000 claims abstract description 35
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006060 molten glass Substances 0.000 claims abstract description 16
- 238000002844 melting Methods 0.000 claims abstract description 14
- 230000008018 melting Effects 0.000 claims abstract description 14
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 12
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 12
- 239000010436 fluorite Substances 0.000 claims abstract description 12
- 239000002241 glass-ceramic Substances 0.000 claims abstract description 12
- 235000010344 sodium nitrate Nutrition 0.000 claims abstract description 12
- 239000004317 sodium nitrate Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 238000005303 weighing Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 20
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000292 calcium oxide Substances 0.000 claims description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- 239000000395 magnesium oxide Substances 0.000 claims description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 7
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 7
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 7
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 7
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 235000012239 silicon dioxide Nutrition 0.000 claims description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 7
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 6
- 239000005751 Copper oxide Substances 0.000 claims description 6
- 229910000428 cobalt oxide Inorganic materials 0.000 claims description 6
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims description 6
- 229910000431 copper oxide Inorganic materials 0.000 claims description 6
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 6
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 4
- 230000000630 rising effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 7
- 238000005034 decoration Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 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
- 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
- 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
- C03C4/00—Compositions for glass with special properties
- C03C4/12—Compositions for glass with special properties for luminescent glass; for fluorescent glass
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The invention provides a preparation method of microcrystalline glass doped with coal gangue in high proportion, and belongs to the technical field of microcrystalline glass. The preparation method of the microcrystalline glass with the high proportion of the gangue comprises the following steps: s1: weighing and uniformly mixing raw materials including coal gangue, sodium nitrate, fluorite and calcite in proportion, wherein the dosage of the coal gangue is more than 80%, and putting the raw materials into a high-temperature furnace for melting to obtain high-temperature molten glass liquid; s2: pouring the high-temperature molten glass into a mould and pressing and forming; s3: and (3) placing the formed blank in a resistance furnace for heat treatment, and cooling to room temperature after the heat treatment is finished to obtain black microcrystalline glass. The invention has the advantages that the waste coal gangue is mixed in a high proportion, the prepared glass ceramics has beautiful color, no bubbles and good strength, can be widely used in building decoration materials, and the black glass ceramics plate can be widely used in cemeteries, has high yield, can consume a large amount of coal gangue, and lightens the environmental pollution pressure caused by the coal gangue.
Description
Technical Field
The invention belongs to the technical field of glass ceramics, and particularly relates to a preparation method of glass ceramics with high proportion of coal gangue.
Background
The Guizhou province is one of main production places of coal resources in China, a large amount of gangue stored after the coal is locally produced cannot be treated, and the gangue is piled in open air, occupies a large amount of farmlands and pollutes the environment. The gangue is solid waste discharged in the coal mining process and the coal washing process, and is a black gray rock which has lower carbon content and is harder than coal and is associated with a coal bed in the coal forming process. The method comprises the steps of tunneling gangue in a tunnel tunneling process, and washing gangue picked from a top plate, a bottom plate and an interlayer in a mining process. The main component is Al 2 O 3 、SiO 2 In addition, fe is contained in different amounts 2 O 3 、CaO、MgO、Na 2 O、K 2 O、P 2 O 5 、SO 3 And trace rare elements (gallium, vanadium, titanium, cobalt). The accumulation of coal waste creates environmental and economic problems. It contaminates soil, water and air; some research has focused on the recycling of gangue and ash in the field of civil engineering materials (such as brick, ceramic, concrete block pavements) and cement.
Patent No. CN202210072520.8 discloses a high-alumina glass ceramic with a large amount of gangue and a preparation method thereof, wherein the content of the gangue is 50-70%. Patent No. CN201910350888.4 discloses a colored ecological glass ceramic taking coal gangue as a main material and a preparation method thereof, wherein the content of the coal gangue is 67%. In the prior art, in the process of preparing microcrystalline glass by using coal gangue as a raw material, the utilization rate of the coal gangue is not high enough, and the requirements of high-efficiency and large-scale utilization of coal gangue waste cannot be met.
Disclosure of Invention
The invention provides a preparation method of microcrystalline glass doped with coal gangue in a high proportion, which solves the technical problem that the utilization rate of the coal gangue in the microcrystalline glass in the prior art is not high.
In order to achieve the above object, the technical solution of the present invention is:
a preparation method of microcrystalline glass doped with coal gangue in high proportion comprises the following steps:
s1: weighing and uniformly mixing raw materials including coal gangue, sodium nitrate, fluorite and calcite in proportion, wherein the dosage of the coal gangue is more than 80%, and putting the raw materials into a high-temperature furnace for melting to obtain high-temperature molten glass liquid;
s2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: and (3) placing the formed blank in a resistance furnace for heat treatment, and cooling to room temperature after the heat treatment is finished to obtain black microcrystalline glass.
Preferably, the raw materials in the step S1 comprise the following components in percentage by weight: 80-85 parts of raw material gangue, 3-8 parts of sodium nitrate, 5-10 parts of fluorite and 5-10 parts of calcite.
Preferably, the raw materials comprise the following components in percentage by weight: 80 parts of raw material gangue, 5 parts of sodium nitrate, 7 parts of fluorite and 8 parts of calcite.
Preferably, the raw material further comprises one of nickel oxide, cobalt oxide and copper oxide.
Preferably, the nickel oxide or cobalt oxide or copper oxide is used in an amount of 0.1 to 1 part.
Preferably, the chemical components of the coal gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
Preferably, the melting temperature of the step S1 in a high-temperature furnace is 1550 ℃, and the temperature is kept for 120min.
Preferably, the heat treatment procedure in the step S3 is to put the molded blank into a resistance furnace, wherein the temperature of the resistance furnace is set to 600 ℃, and the heat preservation time is 60 minutes; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; then the temperature is increased to 900 ℃ according to the temperature rising rate of 30 ℃ per minute, and the heat preservation time is 120min.
The beneficial effects of the invention are as follows:
the invention provides a preparation method of microcrystalline glass doped with coal gangue in a high proportion, which effectively digests waste coal gangue, and the prepared microcrystalline glass has beautiful color, no bubbles and good strength, can be widely used in building decoration materials, can be widely used in cemeteries, has high yield, can consume a large amount of coal gangue, and lightens the environmental pollution pressure caused by the coal gangue.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.
The preparation method of the microcrystalline glass with the high-proportion coal gangue in the following embodiment comprises the following steps:
s1: 80-85 parts of raw material gangue, 3-8 parts of sodium nitrate, 5-10 parts of fluorite and 5-10 parts of calcite, and optionally 0.1-1 part of one of nickel oxide, cobalt oxide or copper oxide, weighing according to a proportion, uniformly mixing, putting the raw materials into a high-temperature furnace for melting, wherein the melting temperature is 1550 ℃, and preserving heat for 120min to obtain high-temperature molten glass;
the chemical components of the gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
S2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: placing the molded green body in a resistance furnace for heat treatment, wherein the heat treatment procedure is to place the molded green body in the resistance furnace, and the resistance furnace is set at 600 ℃ for 60min; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; and then heating to 900 ℃ according to the heating rate of 30 ℃ per minute, preserving heat for 120min, and cooling to room temperature to obtain black microcrystalline glass.
Example 1
A preparation method of microcrystalline glass doped with coal gangue in high proportion comprises the following steps:
s1: weighing 80 parts of raw material gangue, 5 parts of sodium nitrate, 7 parts of fluorite, 7 parts of calcite and 1 part of nickel oxide according to a proportion, uniformly mixing, putting the raw materials into a high-temperature furnace for melting, wherein the melting temperature is 1550 ℃, and preserving heat for 120min to obtain high-temperature molten glass;
the chemical components of the gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
S2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: placing the molded green body in a resistance furnace for heat treatment, wherein the heat treatment procedure is to place the molded green body in the resistance furnace, and the resistance furnace is set at 600 ℃ for 60min; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; and then heating to 900 ℃ according to the heating rate of 30 ℃ per minute, preserving heat for 120min, and cooling to room temperature to obtain black microcrystalline glass.
Example 2
A preparation method of microcrystalline glass doped with coal gangue in high proportion comprises the following steps:
s1: 82 parts of raw material gangue, 3 parts of sodium nitrate, 10 parts of fluorite, 7.9 parts of calcite and 0.1 part of cobalt oxide are weighed according to a proportion and uniformly mixed, the raw materials are put into a high-temperature furnace to be melted, the melting temperature is 1550 ℃, and the temperature is kept for 120min, so that high-temperature molten glass liquid is obtained;
the chemical components of the gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
S2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: placing the molded green body in a resistance furnace for heat treatment, wherein the heat treatment procedure is to place the molded green body in the resistance furnace, and the resistance furnace is set at 600 ℃ for 60min; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; and then heating to 900 ℃ according to the heating rate of 30 ℃ per minute, preserving heat for 120min, and cooling to room temperature to obtain black microcrystalline glass.
Example 3
A preparation method of microcrystalline glass doped with coal gangue in high proportion comprises the following steps:
s1: weighing 80 parts of raw material gangue, 5 parts of sodium nitrate, 7 parts of fluorite and 8 parts of calcite according to a proportion, uniformly mixing, putting the raw materials into a high-temperature furnace for melting, and preserving heat for 120min at the melting temperature of 1550 ℃ to obtain high-temperature molten glass;
the chemical components of the gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
S2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: placing the molded green body in a resistance furnace for heat treatment, wherein the heat treatment procedure is to place the molded green body in the resistance furnace, and the resistance furnace is set at 600 ℃ for 60min; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; and then heating to 900 ℃ according to the heating rate of 30 ℃ per minute, preserving heat for 120min, and cooling to room temperature to obtain black microcrystalline glass.
Example 4
A preparation method of microcrystalline glass doped with coal gangue in high proportion comprises the following steps:
s1: weighing and uniformly mixing 85 parts of raw material gangue, 8 parts of sodium nitrate, 10 parts of fluorite, 10 parts of calcite and 0.8 part of copper oxide according to a proportion, putting the raw materials into a high-temperature furnace for melting, wherein the melting temperature is 1550 ℃, and preserving heat for 120min to obtain high-temperature molten glass;
the chemical components of the gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
S2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: placing the molded green body in a resistance furnace for heat treatment, wherein the heat treatment procedure is to place the molded green body in the resistance furnace, and the resistance furnace is set at 600 ℃ for 60min; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; and then heating to 900 ℃ according to the heating rate of 30 ℃ per minute, preserving heat for 120min, and cooling to room temperature to obtain black microcrystalline glass.
The microcrystalline glass prepared in the embodiment 1 of the invention is subjected to parameter comparison with the main performances of the existing natural food materials, and the results are shown in the following table.
As shown in the table, the glass ceramic plate prepared by using the coal gangue as the main raw material has better bending strength, compressive strength and Mohs hardness than the existing marble and sliding bar rock, and also has good water absorption, acid resistance and alkali resistance.
The glass ceramic of the invention can be used for green environment-friendly decorative materials, has the excellent properties of flat and clean plate surfaces, uniform and consistent color tone, soft and crystal luster, no water absorption, pollution prevention, acid-base resistance, aging resistance, environment protection and no radiation toxicity, is representative of the decorative materials in the current world, and can be widely used for the decoration of inner and outer walls, floors, cylinders and table surfaces of high-end buildings such as hotels, shops, office buildings, subway stations, airports, villas and the like and the decoration of tomb-level places.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent modifications made by the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (8)
1. The preparation method of the microcrystalline glass doped with the coal gangue in a high proportion is characterized by comprising the following steps of:
s1: weighing and uniformly mixing raw materials including coal gangue, sodium nitrate, fluorite and calcite in proportion, wherein the dosage of the coal gangue is more than 80%, and putting the raw materials into a high-temperature furnace for melting to obtain high-temperature molten glass liquid;
s2: pouring the high-temperature molten glass into a mould and pressing and forming;
s3: and (3) placing the formed blank in a resistance furnace for heat treatment, and cooling to room temperature after the heat treatment is finished to obtain black microcrystalline glass.
2. The method for preparing the microcrystalline glass with the high-proportion gangue doped therein according to claim 1, wherein the raw materials of the step S1 comprise the following components in percentage by weight: 80-82 parts of raw material gangue, 3-8 parts of sodium nitrate, 5-10 parts of fluorite and 5-10 parts of calcite.
3. The method for preparing the microcrystalline glass with the high proportion of the doped coal gangue as claimed in claim 2, wherein the raw materials comprise the following components in percentage by weight: 80 parts of raw material gangue, 5 parts of sodium nitrate, 7 parts of fluorite and 8 parts of calcite.
4. The method for preparing glass ceramic with high proportion of gangue as claimed in any one of claims 1-3, wherein the raw materials further comprise one of nickel oxide, cobalt oxide and copper oxide.
5. The method for preparing glass ceramic with high proportion of gangue as claimed in claim 4, wherein the amount of nickel oxide, cobalt oxide or copper oxide is 0.1-1 part.
6. The method for preparing the microcrystalline glass with the high proportion of the doped coal gangue, which is disclosed in claim 1, is characterized in that the chemical components of the coal gangue are composed of the following raw materials in percentage by weight: 41.43% of silicon dioxide, 21.92% of aluminum oxide, 4.20% of ferric oxide, 2.24% of calcium oxide, 0.73% of magnesium oxide, 2.02% of potassium oxide, 1.82% of sodium oxide, 3.38% of titanium oxide, 21.88% of ignition decrement and the balance of impurities.
7. The method for preparing glass ceramic with high proportion of gangue added according to claim 1, wherein the melting temperature of step S1 in a high temperature furnace is 1550 ℃ and the temperature is kept for 120min.
8. The method for preparing glass ceramic with high proportion of gangue as claimed in claim 7, wherein the heat treatment procedure in step S3 is to put the formed blank into a resistance furnace, the temperature of the resistance furnace is set to 600 ℃, and the heat preservation time is 60min; then heating to 750 ℃ according to the heating rate of 30 ℃ per minute, and preserving heat for 60min; then the temperature is increased to 900 ℃ according to the temperature rising rate of 30 ℃ per minute, and the heat preservation time is 120min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346465.1A CN116375344A (en) | 2023-04-03 | 2023-04-03 | Preparation method of microcrystalline glass with high proportion of gangue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310346465.1A CN116375344A (en) | 2023-04-03 | 2023-04-03 | Preparation method of microcrystalline glass with high proportion of gangue |
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| Publication Number | Publication Date |
|---|---|
| CN116375344A true CN116375344A (en) | 2023-07-04 |
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| CN202310346465.1A Pending CN116375344A (en) | 2023-04-03 | 2023-04-03 | Preparation method of microcrystalline glass with high proportion of gangue |
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| Country | Link |
|---|---|
| CN (1) | CN116375344A (en) |
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- 2023-04-03 CN CN202310346465.1A patent/CN116375344A/en active Pending
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