CN114644506A - Environment-friendly high-whiteness domestic ceramic product and preparation process thereof - Google Patents
Environment-friendly high-whiteness domestic ceramic product and preparation process thereof Download PDFInfo
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- CN114644506A CN114644506A CN202210366670.XA CN202210366670A CN114644506A CN 114644506 A CN114644506 A CN 114644506A CN 202210366670 A CN202210366670 A CN 202210366670A CN 114644506 A CN114644506 A CN 114644506A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000843 powder Substances 0.000 claims abstract description 42
- 239000002002 slurry Substances 0.000 claims abstract description 34
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 27
- 239000010436 fluorite Substances 0.000 claims abstract description 27
- 238000010304 firing Methods 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 229940105847 calamine Drugs 0.000 claims abstract description 20
- 229910052864 hemimorphite Inorganic materials 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000011787 zinc oxide Substances 0.000 claims abstract description 20
- 235000014692 zinc oxide Nutrition 0.000 claims abstract description 20
- CPYIZQLXMGRKSW-UHFFFAOYSA-N zinc;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Zn+2] CPYIZQLXMGRKSW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 16
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 16
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000011246 composite particle Substances 0.000 claims abstract description 13
- 229910001710 laterite Inorganic materials 0.000 claims abstract description 13
- 239000011504 laterite Substances 0.000 claims abstract description 13
- 229910052656 albite Inorganic materials 0.000 claims abstract description 12
- 239000010453 quartz Substances 0.000 claims abstract description 12
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000006185 dispersion Substances 0.000 claims abstract description 10
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 239000008187 granular material Substances 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 6
- 238000000576 coating method Methods 0.000 claims abstract description 6
- 238000000498 ball milling Methods 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 18
- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 claims description 11
- 238000001354 calcination Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002202 Polyethylene glycol Substances 0.000 claims description 5
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 5
- 230000032683 aging Effects 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005245 sintering Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 244000271437 Bambusa arundinacea Species 0.000 claims 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000010792 Phyllostachys aurea Nutrition 0.000 claims 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052863 mullite Inorganic materials 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 230000003647 oxidation Effects 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 abstract description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 241000272814 Anser sp. Species 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007676 flexural strength test Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010977 jade Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013001 point bending Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/04—Clay; Kaolin
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/16—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
- C04B35/18—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in aluminium oxide
- C04B35/185—Mullite 3Al2O3-2SiO2
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- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
- C04B2235/3472—Alkali metal alumino-silicates other than clay, e.g. spodumene, alkali feldspars such as albite or orthoclase, micas such as muscovite, zeolites such as natrolite
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- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
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- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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- C04B2235/9646—Optical properties
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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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to the technical field of ceramics, and particularly discloses an environment-friendly high-whiteness daily ceramic product which comprises de-mineralized kaolin, albite, quartz, zirconium silicate and a composite particle material. The composite granular material is prepared by coating fluorite tailing powder and calcined rhombohedral zinc ore powder by Dehua-Longque red soil dispersion slurry, granulating and drying. The invention has high whiteness, high strength and good thermal shock resistance, is suitable for daily ceramics, and has the advantages of energy saving, environmental protection, large firing range and high yield because fluorite tailings are recycled. Particularly, in the staged heating oxidation firing process, the silicon-aluminum reaction in the Dehua Longque laterite dispersed slurry is used as mullite crystals, and the fluorite tailing powder and the calcined calamine powder act synergistically to reduce the melting temperature of the laterite-silicon-aluminum, so that the continuous curing of the mullite crystals is accelerated to form a compact framework, and the breaking strength and the thermal shock resistance of a blank body are favorably enhanced.
Description
Technical Field
The invention belongs to the technical field of ceramics, and particularly relates to an environment-friendly high-whiteness daily ceramic product and a preparation process thereof.
Background
Germany is one of the three ancient china, and is the same name as Jiangxi Jingdezhen and Hunan carinling. The German white porcelain has the beautiful names of ivory white, lard white, goose down white and the like because the product is fine in manufacture, firm in texture, glittering and translucent like jade and has moist and grease-like glaze surfaces, has unique style in the white porcelain system in China, plays an important role in the development history of ceramics and has the reputation of east art internationally.
At present, the main varieties of the German white porcelain are tea set, sculpture porcelain and the like, the firing temperature range in the prior art is narrow and is only about 10 ℃, the product is easy to deform and has high brittleness, the breaking strength is about 60MPa, the whiteness is about 76, and the thermal stability is 160-20 ℃, so that various performance indexes of the product are difficult to ensure in the production process.
In addition, the argil mineral resources are limited, the output is high, the energy consumption is high, a large amount of tailings are generated in the process of mining fluorite ores, and the chemical composition of the fluorite tailings mainly comprises SiO2: 70% -80%, Al 203: 4% -6%, CaF 2: 10% -16%, etc. If the fluorite tailings can be used for preparing the ceramic body, the method is beneficial to resource recycling, and is energy-saving and environment-friendly.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide the environment-friendly high-whiteness daily ceramic product and the preparation process thereof, and the fluorite tailings are comprehensively developed and utilized to prepare the environment-friendly green body with high breaking strength and high whiteness.
In order to solve the technical problems, the invention adopts the technical scheme that:
the environment-friendly high-whiteness daily ceramic product comprises the following components in parts by weight: 15-30 parts of germanized kaolin, 8-12 parts of albite, 2-6 parts of quartz, 6-8 parts of zirconium silicate, 3-5 parts of bone ash and 25-40 parts of composite particles.
Preferably, the composite particle material is prepared by coating fluorite tailing powder and calcined calamine powder with the Dehua Longju clay dispersed slurry, granulating and drying, and the particle size is 200-500 meshes.
Preferably, the treatment process of the Dehua Longque laterite dispersion slurry comprises the following steps: adding water into the de-ironed Dehua Longque red clay after calcination and ball milling to obtain ball milling slurry with the particle size of less than 20 mu m, wherein the ratio of the de-hua Longque red clay to the water is 1: 1.15-1.25, then adding 0.1-0.2% of polyethylene glycol and 0.15-0.3% of silane coupling agent based on the total weight of the ball milling slurry, and uniformly stirring.
Preferably, the calcination temperature of the calcined calamine powder is 800-850 ℃, and the particle size is less than 5 μm.
Preferably, the particle size of the fluorite tailing powder is 2-4 μm.
Preferably, the mass fraction ratio of the Dehua Longjue red soil dispersion slurry to the fluorite tailing powder to the calcined calamine powder is 25-50: 0.5-0.8: 0.2-0.5.
Preferably, the germanized kaolin is a kunzhu kaolin.
The invention also provides a preparation process of the environment-friendly high-whiteness daily ceramic product, which comprises the following steps:
s1, utilizing the blank: mixing germanized kaolin, albite, bone ash, quartz and zirconium silicate, performing wet ball milling, adding composite particles, adjusting the concentration of blank slurry to 46-50 baume degrees, removing bubbles in vacuum, performing filter pressing, aging mud, and forming a ceramic blank;
s2, glazing and firing: and step S1, glazing the ceramic blank after natural drying, and heating and sintering the ceramic blank in stages under oxidizing flame, wherein the maximum sintering temperature is 1230-1280 ℃.
Preferably, the staged temperature-increasing firing process in step S2 is: heating to 850-900 ℃ at the speed of 8-10 ℃/min, keeping the temperature for 60-80 min, then slowly burning to 1050-1100 ℃ at the speed of 4-6 ℃/min, keeping the temperature for 60-80 min, heating to 1230-1280 ℃, keeping the temperature, burning for 100-120 min, cooling to room temperature, and taking out of the kiln.
Compared with the prior art, the invention has the following beneficial effects:
the ceramic product prepared from the adobe kaolin, albite, quartz, zirconium silicate, bone ash and the well-researched composite granular material is high in whiteness, strength and thermal shock resistance, is suitable for daily ceramics, and is energy-saving, environment-friendly, large in firing range and high in yield due to the fact that fluorite tailings are recycled. The treated Dehua Longque red soil dispersion slurry can well coat small-particle-size fluorite tailing powder and calcined calamine powder, each particle is dispersively coated with a plurality of fluorite tailing powders and calcined calamine powders, silicon-aluminum reaction in the Dehua Longque red soil dispersion slurry is used as mullite crystal in the staged heating oxidation firing process, the fluorite tailing powder and the calcined calamine powder synergistically act to reduce the melting temperature of laterite-silicon-aluminum, mullite crystallization is accelerated to form a compact framework, and the breaking strength and the thermal shock resistance of a blank body are enhanced.
Detailed Description
Example 1
The embodiment provides an environment-friendly high-whiteness daily ceramic product which comprises the following components in parts by weight: 30 parts of Dehua Jinzhu kaolin, 8 parts of albite, 3 parts of quartz, 8 parts of zirconium silicate, 3 parts of bone ash and 25 parts of composite particles.
Wherein: the composite granular material is prepared by coating fluorite tailing powder and calcined calamine powder with Dehua Longque laterite dispersed slurry, granulating and drying, wherein the grain size is 300 meshes, and the mass fraction ratio of the Dehua Longque laterite dispersed slurry to the fluorite tailing powder to the calcined calamine powder is 30:0.8: 0.2. The calcining temperature of the calcined calamine powder is 800 ℃, and the particle size is 3 mu m; the particle size of the fluorite tailing powder is 3 mu m.
The treatment process of the Dehua Longque laterite dispersion slurry comprises the following steps: adding water into the de-ironed Dehua Longque red soil after calcination and ball milling to obtain ball milling slurry with the particle size of 18 mu m, wherein the ratio of the Dehua Longque red soil to the water is 1:1.25, then adding 0.1 percent of polyethylene glycol and 0.3 percent of silane coupling agent based on the total weight of the ball milling slurry, and uniformly stirring.
The preparation process of the environment-friendly high-whiteness domestic ceramic product comprises the following steps of: s1, utilizing the blank: mixing germanized kaolin, albite, bone ash, quartz and zirconium silicate, carrying out wet ball milling, then adding composite particles, adjusting the concentration of blank slurry to 50 baume degrees, carrying out vacuum defoaming, filter pressing, ageing, forming a ceramic blank body, S2, glazing, and firing: and step S1, glazing after naturally drying the ceramic blank, and heating and firing in stages under oxidizing flame, wherein the highest firing temperature is 1280 ℃, and the heating and firing processes in stages are as follows: heating to 850 deg.C at 8 deg.C/min and maintaining for 80min, then slowly burning to 1100 deg.C at 6 deg.C/min and maintaining for 60min, heating to 1280 deg.C and maintaining for 100min, then cooling to room temperature and taking out of the kiln.
Example 2
The embodiment provides an environment-friendly high-whiteness daily ceramic product which comprises the following components in parts by weight: 15 parts of Dehua Jinzhu kaolin, 12 parts of albite, 6 parts of quartz, 6 parts of zirconium silicate, 5 parts of bone ash and 30 parts of composite particles.
Wherein: the composite granular material is obtained by coating fluorite tailing powder and calcined calamine powder with Dehua Longque laterite dispersed slurry, granulating and drying, and the grain diameter is 200 meshes, and the mass fraction ratio of the Dehua Longque laterite dispersed slurry to the fluorite tailing powder to the calcined calamine powder is 25:0.5: 0.5. The calcining temperature of the calcined calamine powder is 850 ℃, and the particle size is 4 mu m; the particle size of the fluorite tailing powder is 4 mu m.
The treatment process of the Dehua Longque laterite dispersion slurry comprises the following steps: adding water into the de-ironed Dehua Longque red soil after calcination and ball milling to obtain ball milling slurry with the particle size of 15 mu m, wherein the ratio of the de-hua Longque red soil to the water is 1:1.15, then adding 0.1 percent of polyethylene glycol and 0.15 percent of silane coupling agent based on the total weight of the ball milling slurry, and uniformly stirring.
The preparation process of the environment-friendly high-whiteness domestic ceramic product comprises the following steps of: s1, blank benefiting: mixing germanized kaolin, albite, bone ash, quartz and zirconium silicate, carrying out wet ball milling, adding composite particles, adjusting the concentration of blank slurry to 46 Baume degrees, carrying out vacuum defoaming, filter pressing, ageing mud, forming a ceramic blank, S2, glazing, and firing: and step S1, glazing after naturally drying the ceramic blank, and heating and firing in stages under oxidizing flame, wherein the highest firing temperature is 1280 ℃, and the heating and firing processes in stages are as follows: heating to 900 deg.C at 8 deg.C/min and maintaining for 60min, then slowly burning to 1050 deg.C at 4 deg.C/min and maintaining for 80min, heating to 1280 deg.C and maintaining for 120min, then cooling to room temperature, and taking out of the kiln.
Example 3
The embodiment provides an environment-friendly high-whiteness daily ceramic product which comprises the following components in parts by weight: 20 parts of Dehua Jinzhu kaolin, 10 parts of albite, 5 parts of quartz, 8 parts of zirconium silicate, 4 parts of bone ash and 35 parts of composite particles.
Wherein: the composite granular material is prepared by coating fluorite tailing powder and calcined calamine powder with Dehua Longque laterite dispersed slurry, granulating and drying, wherein the grain size is 400 meshes, and the mass fraction ratio of the Dehua Longque laterite dispersed slurry to the fluorite tailing powder to the calcined calamine powder is 50:0.8: 0.4. The calcining temperature of the calcined calamine powder is 850 ℃, and the particle size is 4 mu m; the particle size of the fluorite tailing powder is 2.5 mu m.
The treatment process of the Dehua Longque laterite dispersion slurry comprises the following steps: adding water into the de-ironed Dehua Longque red soil after calcination and ball milling to obtain ball milling slurry with the particle size of 18 mu m, wherein the ratio of the Dehua Longque red soil to the water is 1:1.2, then adding 0.2 percent of polyethylene glycol and 0.2 percent of silane coupling agent based on the total weight of the ball milling slurry, and uniformly stirring.
The preparation process of the environment-friendly high-whiteness domestic ceramic product comprises the following steps of: s1, utilizing the blank: mixing germanized kaolin, albite, bone ash, quartz and zirconium silicate, carrying out wet ball milling, adding composite particles, adjusting the concentration of blank slurry to 48 Baume degrees, carrying out vacuum defoaming, filter pressing and mud aging, forming a ceramic blank, and S2, glazing and firing: glazing the ceramic blank obtained in the step S1 after natural drying, and heating and firing in stages under oxidizing flame, wherein the maximum firing temperature is 1230 ℃, and the heating and firing processes in stages are as follows: heating to 900 deg.C at 10 deg.C/min and holding for 60min, then slowly heating to 1100 deg.C at 5 deg.C/min and holding for 60min, heating to 1230 deg.C and holding for firing for 120min, then cooling to room temperature, and taking out of the kiln.
Comparative example 1
This comparative example differs from example 3 above only in that: the calcined calamine powder is not added to the composite granules.
Comparative example 2
This comparative example differs from example 3 above only in that: fluorite tailing powder is not added into the composite particle material.
Comparative example 3
This comparative example differs from example 3 above only in that: the firing process is to enter a kiln, linearly heat up to 1230 ℃ within 5 hours and carry out heat preservation firing for 120 min.
Physical properties of the green bodies obtained in examples 1 to 3 of the present invention (abbreviated as L1 to L3 in the table) and comparative examples 1 to 3 (abbreviated as D1 to D3 in the table) were measured, respectively, and are shown in Table 1.
Table 1: tables showing the results of physical property tests of examples 1 to 3 of the present invention and comparative example 1
Wherein: the flexural strength test method comprises the following steps: in the experiment, a DKZ-5000 bending strength tester is adopted to measure the bending strength of the ceramic material. The bending resistance tester adopts a simply supported beam method, namely a three-point bending resistance method for measurement. The flexural strength calculation formula of the sample strip obtained by the stress analysis of the sample is as follows: p is 3FL/2bh2。
Wherein P represents the flexural strength (MPa) of the sample strip; f is the maximum load (N) when the sample strip is broken; l-distance between two points, i.e. span (mm); b-the width (mm) of the fracture of the sample strip; h-specimen strip break height (mm).
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The environmental-friendly high-whiteness daily ceramic product is characterized in that: the composition comprises the following components in parts by weight: 15-30 parts of germanized kaolin, 8-12 parts of albite, 2-6 parts of quartz, 6-8 parts of zirconium silicate, 3-5 parts of bone ash and 25-40 parts of composite particles.
2. The environmentally friendly high whiteness commodity ceramic article of claim 1, wherein: the composite granular material is prepared by coating fluorite tailing powder and calcined calamine powder with the Dehua Longque red soil dispersion slurry, granulating and drying, and the particle size is 200-500 meshes.
3. The environmentally friendly high-whiteness commodity ceramic article of claim 2, wherein: the treatment process of the Dehua-Longque laterite dispersion slurry comprises the following steps: adding water into the de-ironed Dehua Longque red clay after calcination and ball milling to obtain ball milling slurry with the particle size of less than 20 mu m, wherein the ratio of the de-hua Longque red clay to the water is 1: 1.15-1.25, then adding 0.1-0.2% of polyethylene glycol and 0.15-0.3% of silane coupling agent based on the total weight of the ball milling slurry, and uniformly stirring.
4. The environmentally friendly high-whiteness commodity ceramic article of claim 2, wherein: the calcining temperature of the calcined calamine powder is 800-850 ℃, and the particle size is less than 5 mu m.
5. The environmentally friendly high-whiteness commodity ceramic article of claim 2, wherein: the particle size of the fluorite tailing powder is 2-4 mu m.
6. The environmentally friendly high-whiteness commodity ceramic article of claim 2, wherein: the mass fraction ratio of the Dehua Longque laterite dispersed slurry to the fluorite tailing powder to the calcined calamine powder is 25-50: 0.5-0.8: 0.2-0.5.
7. The environmentally friendly high whiteness commodity ceramic article of claim 1, wherein: the Dehua kaolin is golden bamboo pit kaolin.
8. A process for the preparation of an environmentally friendly high whiteness commodity ceramic article according to any one of claims 1 to 7, wherein: the method comprises the following steps:
s1, utilizing the blank: mixing germanized kaolin, albite, bone ash, quartz and zirconium silicate, performing wet ball milling, adding composite particles, adjusting the concentration of blank slurry to 46-50 baume degrees, removing bubbles in vacuum, performing filter pressing, aging mud, and forming a ceramic blank;
s2, glazing and firing: and step S1, glazing the ceramic blank after natural drying, and heating and sintering the ceramic blank in stages under oxidizing flame, wherein the maximum sintering temperature is 1230-1280 ℃.
9. The process for preparing an environmentally friendly high whiteness domestic ceramic article according to claim 1, wherein: the staged temperature-raising firing process in step S2 is: heating to 850-900 ℃ at the speed of 8-10 ℃/min, keeping the temperature for 60-80 min, then slowly burning to 1050-1100 ℃ at the speed of 4-6 ℃/min, keeping the temperature for 60-80 min, heating to 1230-1280 ℃, keeping the temperature, burning for 100-120 min, cooling to room temperature, and taking out of the kiln.
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