CN113816721A - High-whiteness ceramic large plate and preparation method thereof - Google Patents
High-whiteness ceramic large plate and preparation method thereof Download PDFInfo
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- CN113816721A CN113816721A CN202111172057.6A CN202111172057A CN113816721A CN 113816721 A CN113816721 A CN 113816721A CN 202111172057 A CN202111172057 A CN 202111172057A CN 113816721 A CN113816721 A CN 113816721A
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- kaolin
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- 239000000919 ceramic Substances 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 230000002087 whitening effect Effects 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000011449 brick Substances 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000007873 sieving Methods 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 7
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 238000000498 ball milling Methods 0.000 claims abstract description 6
- 238000007641 inkjet printing Methods 0.000 claims abstract description 6
- 238000005498 polishing Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000007779 soft material Substances 0.000 claims abstract description 4
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 27
- 235000012211 aluminium silicate Nutrition 0.000 claims description 27
- 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 description 27
- 239000002002 slurry Substances 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 20
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 11
- 229910052681 coesite Inorganic materials 0.000 claims description 11
- 229910052593 corundum Inorganic materials 0.000 claims description 11
- 229910052906 cristobalite Inorganic materials 0.000 claims description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 229910052682 stishovite Inorganic materials 0.000 claims description 11
- 229910052905 tridymite Inorganic materials 0.000 claims description 11
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 11
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000004927 clay Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 8
- 239000012744 reinforcing agent Substances 0.000 claims description 7
- 239000011734 sodium Substances 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 229920005610 lignin Polymers 0.000 claims description 4
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical group [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 abstract description 29
- 238000000034 method Methods 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000004480 active ingredient Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 8
- 238000012216 screening Methods 0.000 description 4
- 239000004566 building material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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Abstract
The invention discloses a high-white ceramic large plate and a preparation method thereof, wherein the high-white ceramic large plate comprises the following effective components in parts by weight: 40-130 parts of hard material; 24-90 parts of soft material; 0-1.5 parts of zirconium silicate; 0.1-1.5 parts of blank whitening agent; 0.3-4 parts of an auxiliary agent; the preparation method comprises the steps of ball milling, sieving to remove iron, spraying powder, pressing green bricks, drying, glazing, ink-jet printing, sintering and polishing the active ingredients in sequence to obtain the high-whiteness ceramic large plate; the components have fine granularity, good dispersibility, strong covering power, good whitening property and uniform color and small deviation; the usage amount of zirconium silicate is greatly reduced, and the whiteness of the prepared large board can exceed that of a large board product whitened by conventional zirconium silicate; the radioactivity of the product is reduced while whitening, so that the ceramic blank prepared by the method has the advantages of high whiteness and no radioactivity after being sintered; the invention comprehensively optimizes the product performance, the environmental protection performance and the economic benefit of the ceramic large plate, ensures that the production and the preparation of the high-whiteness ceramic large plate are more reasonable, and is suitable for large-scale popularization.
Description
Technical Field
The invention relates to a high-whiteness ceramic large plate and a preparation method thereof, belonging to the technical field of building materials.
Background
A large ceramic plate (ceramic plate for short) is a plate-shaped ceramic product with area not less than 1.62 square meters and made up of pottery clay and ore through shaping and high-temp calcining at 1200 deg.C. Compared with other ceramic tile products, the ceramic large plate has the characteristics of large specification, high hardness, stable performance, safety, firmness, environmental protection, health, strong decoration and the like. The ceramic large plate is mainly used for decorating walls and floors of buildings, decorating furniture such as wardrobe decorative panels, cabinet panels and the like, and decorating door panels.
Along with the fire heat of the ceramic large plate, consumers pay more and more attention to the quality of the ceramic large plate, and the fired ceramic large plate has the problems of color deviation, uneven color, poor covering power and the like due to different primary colors, uneven granularity and poor dispersibility of various inorganic raw materials. Therefore, the whiteness of the fired glaze surface is improved by increasing the using amount of zirconium silicate, and the more zirconium silicate is added, the shallower the color development of the ceramic ink is, and the color development of the ceramic ink is not facilitated. Meanwhile, the radioactivity of the zirconium silicate is high, and the radioactivity of the product can be improved by adding a large amount of zirconium silicate, so that the radioactivity data of the product is beyond the national standard range.
In view of the above situation, the present invention provides a high-whiteness ceramic large board and a preparation method thereof to meet the process performance requirements of thin ceramic large boards.
Disclosure of Invention
In order to overcome the defects of the prior art, the first object of the invention is to provide a high-whiteness ceramic large plate which has the advantages of fine component granularity, good dispersibility, strong covering power, good whitening property, low radioactivity and small color uniformity deviation.
The second purpose of the invention is to provide a preparation method of the high-whiteness ceramic large plate.
The first purpose of the invention can be achieved by adopting the following technical scheme: a high-whiteness ceramic large plate comprises the following effective components in parts by weight:
the content of zirconium dioxide in the blank whitening agent is 30-40 wt%.
Further, the composition comprises the following effective components in parts by weight:
further, the hard material comprises the following components in parts by weight:
further, the soft material comprises the following components in parts by weight:
2-10 parts of high clay;
20-70 parts of kaolin;
2-10 parts of high alumina.
Further, the kaolin comprises a first kaolin, a second kaolin and a third kaolin, the first kaolin comprising a composition of SiO2 54.81wt％、Al2O3 29.98wt％、CaO 0.31wt％、MgO 0.79wt％、Fe2O3 0.88wt％、TiO2 0.1wt％、K2O 2.75wt％、Na20.39 wt% of O, 9.8 wt% of loss on ignition and 99.81 wt% of total amount; second KaolinComprises SiO2 48.37wt％、Al2O3 36.04wt％、CaO 0.2wt％、MgO 0.1wt％、Fe2O30.89wt％、TiO2 0.11wt％、K2O 1.52wt％、Na20.26 wt% of O, 12.3 wt% of loss on ignition and 99.79 wt% of total amount; the third kaolin comprises SiO2 49.46wt％、Al2O3 35.62wt％、CaO 0.22wt％、MgO 0.18wt％、Fe2O3 0.65wt％、TiO2 0.09wt％、K2O 1.51wt％、Na20.38 wt% of O, 11.76 wt% of loss on ignition and 99.87 wt% of total amount.
Further, the components of the body whitening agent include: ZrO (ZrO)2 30-40wt％、Al2O3 40-44wt％、SiO220-22wt％、Fe2O3 0.1-0.5wt％、CaO 0.1-0.3wt％、MgO 0.05-0.2wt％、K2O 0.03-0.08wt％、Na2O 1.5-2.0wt％、SrO 0.3-0.4wt％、TiO20.05-0.15 wt% and loss on ignition of 1.34 wt%.
Further, the components of the body whitening agent include: ZrO (ZrO)2 32.96wt％、Al2O3 43.15wt％、SiO221.30wt％、Fe2O3 0.32wt％、CaO 0.26wt％、MgO 0.11wt％、K2O 0.07wt％、Na2O 1.73wt％、SrO 0.01wt％、TiO20.12 wt% and loss on ignition of 1.34 wt%.
Further, the adjuvants include debonders, reinforcing agents, and binders.
Further, the debonder is sodium tripolyphosphate; the adhesive is water glass; the reinforcing agent is lignin.
Further, the effective components are added with 34-36 parts of water by weight to form slurry, and the slurry has the following properties: 35-60s, and the fineness is 250 meshes; screening residues: 0.8-1, specific gravity: 1.66-1.72g/cm3。
The second purpose of the invention can be achieved by adopting the following technical scheme: a preparation method of a high-whiteness ceramic large plate comprises the following effective components in parts by weight:
sequentially performing ball milling, sieving to remove iron, powder spraying, green brick pressing, drying, glazing, ink-jet printing, sintering and polishing to obtain a high-white ceramic large plate; the content of zirconium dioxide in the blank whitening agent is 30-40 wt%.
Compared with the prior art, the invention has the beneficial effects that:
1. the blank whitening agent with the zirconium dioxide content of 30-40 wt% is added into the high-white ceramic large plate, so that the using amount of zirconium silicate is greatly reduced, and the high-white ceramic large plate has the characteristics of fine granularity, good dispersibility, low radioactivity and strong covering power and has a whitening effect;
2. the active components of the high-whiteness ceramic large plate are added with water to form slurry, so that the high-whiteness ceramic large plate has good flow rate and is easy to process and shape;
3. the blank whitening agent is adopted to cooperate with the zirconium silicate, so that the using amount of the zirconium silicate in the formula is greatly reduced, and the whiteness of the prepared large board can exceed that of a large board product which is whitened by the conventional zirconium silicate (or is equivalent to that of the conventional large board product); the radioactivity of the product is reduced while whitening, so that the ceramic blank prepared by the method has the advantages of high whiteness and low radioactivity after being sintered; the whitening effect of the blank whitening agent is better than that of zirconium silicate under the same condition;
4. the invention optimizes the whole component proportion, particularly greatly reduces the use amount of zirconium silicate, reduces the production cost, comprehensively optimizes the product performance, the environmental protection performance and the economic benefit of the optimized ceramic large plate, ensures that the production and the preparation of the high-whiteness ceramic large plate are more reasonable, and is suitable for large-scale popularization.
Detailed Description
The following detailed description is provided for the embodiments of the present invention, so that how to apply the technical means to solve the technical problems and achieve the technical effects can be fully understood and implemented. Unless otherwise indicated, the techniques employed in the examples are conventional and well known to those skilled in the art, and the reagents and products employed are also commercially available. Various procedures and methods not described in detail are conventional methods well known in the art, and all reagents are commonly available commercially.
A high-whiteness ceramic large plate comprises the following effective components in parts by weight:
the content of zirconium dioxide in the blank whitening agent is 30-40 wt%.
As a further preferable scheme, the high-whiteness ceramic large plate comprises the following effective components in parts by weight:
as a further preferable scheme, the hard material comprises the following components in parts by weight:
as a further preferable scheme, the soft material comprises the following components in parts by weight:
2-10 parts of high clay;
20-70 parts of kaolin;
2-10 parts of high alumina.
As a further preferred embodiment, the kaolin comprises a first kaolin, a second kaolin and a third kaolin, the composition of the first kaolin comprises sio 254.81wt%, al2o329.98wt%, CaO 0.31 wt%, MgO 0.79 wt%, fe2o30.88wt%, tio20.1wt%, K2O 2.75.75 wt%, Na2O 0.39 wt%, loss on ignition 9.8 wt%, total amount 99.81 wt%; the components of the second kaolin comprise SiO248.37wt%, Al2O336.04wt%, CaO 0.2 wt%, MgO 0.1 wt%, Fe2O30.89wt%, TiO20.11wt%, K2O 1.52.52 wt%, Na2O 0.26.26 wt%, loss on ignition 12.3 wt%, and total amount 99.79 wt%; the composition of the third kaolin comprises SiO249.46wt%, Al2O335.62wt%, CaO 0.22 wt%, MgO 0.18 wt%, Fe2O30.65wt%, TiO20.09wt%, K2O 1.51.51 wt%, Na2O 0.38 wt%, loss on ignition 11.76 wt%, and total amount 99.87 wt%.
As a further preferred embodiment, the components of the body whitener include: ZrO (ZrO)2 30-40wt％、Al2O3 40-44wt％、SiO2 20-22wt％、Fe2O3 0.1-0.5wt％、CaO 0.1-0.3wt％、MgO 0.05-0.2wt％、K2O 0.03-0.08wt％、Na2O 1.5-2.0wt％、SrO 0.3-0.4wt％、TiO20.05-0.15 wt% and loss on ignition of 1.34 wt%.
As a further preferred embodiment, the components of the body whitener include: ZrO (ZrO)2 32.96wt％、Al2O343.15wt％、SiO2 21.30wt％、Fe2O3 0.32wt％、CaO 0.26wt％、MgO 0.11wt％、K2O 0.07wt％、Na2O 1.73wt％、SrO 0.01wt％、TiO20.12 wt% and loss on ignition of 1.34 wt%.
As a further preferred embodiment, the auxiliary agents include a debonder, a reinforcing agent, and a binder.
As a further preferable scheme, the dispergator is sodium tripolyphosphate; the adhesive is water glass; the reinforcing agent is lignin.
As a further preferable scheme, the effective component is added with 34-36 parts by weight of water to form slurry, and the slurry has the following properties: 35-60s, and the fineness is 250 meshes; screening residues: 0.8-1, specific gravity: 1.66-1.72g/cm3。
The ceramic slurry is difficult to prepare when the flow rate is too fast or too slow, and compared with the prior art, the invention can effectively improve the sieving efficiency of the slurry and prevent the phenomenon of screen blockage of the slurry; the fluidity of the glaze slurry is increased, and the ceramic performance is improved.
According to the invention, the blank whitening agent is added, although the content of zirconium dioxide is 30-40 wt% and is far lower than that of the conventional zirconium silicate whitening agent, the whiteness of the prepared large board can exceed (or is equivalent to) that of a large board product which is whitened by using the conventional zirconium silicate; meanwhile, the dosage of zirconium silicate is greatly reduced, so that the radioactivity is low, and the ceramic blank prepared by the method has the advantages of high whiteness and low radioactivity after being sintered. The blank whitening agent reduces the sintering temperature of the whole formula, and better optimizes the mixture ratio of the components, so that the prepared product has good whitening property and small color uniformity deviation.
In addition, the use amount of zirconium silicate is greatly reduced, the production cost is also reduced, and the economic benefit is better.
In the formula of the invention, sodium tripolyphosphate is added as a dispergator, so that the powder particles are smooth and have high bulk density, the fluidity of the glaze slurry is increased, and the ceramic performance is improved. The drying strength of the pressed blank can reach 2.4-2.7MPa, and the blank can be subjected to glazing line operation and post-procedure processing without damage and cracking.
In the formula of the invention, lignin is added as a reinforcing agent to increase the strength of a green body, correspondingly reduce the addition of clay raw materials and improve the whiteness and the transmittance of a product.
In the formula of the invention, the raw materials such as potassium feldspar and the like are added to play a role in high-temperature fluxing, so that a high-temperature liquid phase is increased, the homogenization degree of a glaze layer is improved, and the glaze surface is smoother.
In the formula of the invention, Al is reasonably prepared203、TiO2、CaO、ZrO2The components are mixed according to a certain proportion, and the mixture is sprayed on a large plate surface to form a protective layer, so that the coating is hard in texture, scratch-resistant, corrosion-resistant, light, thin, fire-resistant and high-temperature-resistant.
The invention also provides a preparation method of the high-whiteness ceramic large plate, which comprises the following effective components in parts by weight:
sequentially performing ball milling, sieving to remove iron, powder spraying, green brick pressing, drying, glazing, ink-jet printing, sintering and polishing to obtain a high-white ceramic large plate; the content of zirconium dioxide in the blank whitening agent is 30-40 wt%.
It is noted that, in the preparation process of the invention, the rotation speed of the ball mill is 20-25 r/min; the mesh number of the screen used in the screening process is 220-300; the iron removing rod is added in the screen; the drying is to dry the green bricks to the water content<1 percent; the glazing amount of the ground coat is 450-550g/m2(ii) a The firing temperature is 1100-.
The invention will be further described with reference to specific embodiments:
a high-whiteness ceramic large plate comprises the effective components in parts by weight as shown in table 1:
TABLE 1 effective components of high-whiteness ceramic slabs
Wherein, the content of zirconium dioxide in the blank whitening agent is 30-40 wt%;
wherein, the kaolin comprises a first kaolin, a second kaolin and a third kaolin, and the component parameters of the effective components are shown in the table 2:
TABLE 2 composition parameters (wt%)
Wherein, the effective components are added with 34 to 36 weight parts of water to form slurry, and the performance of the slurry is as follows: 35-60s, fineness 250 mesh sieveAnd (3) the rest: 0.8-1, specific gravity: 1.66-1.72g/cm3。
The preparation method of the high-whiteness ceramic large plate comprises the following steps: the preparation method comprises the following steps of (1) mixing the following effective components in parts by weight:
and performing ball milling, sieving to remove iron, powder spraying, green brick pressing, drying, glazing, ink-jet printing, sintering and polishing in sequence to obtain the high-whiteness ceramic large plate.
Examples 1-3 and comparative examples:
table 3 effective components (parts by weight) of high-white ceramic slabs of examples 1 to 3 and comparative example
The preparation process of the above embodiment adopts the following steps: mixing the components, and then performing ball milling, sieving to remove iron, powder spraying, green brick pressing, drying, glazing, ink-jet printing, sintering and polishing in sequence to obtain the high-whiteness ceramic large plate.
In the preparation process of the embodiment, the rotation speed of the ball mill is 20-25 r/min; the mesh number of the screen used in the screening process is 220-300; the iron removing rod is added in the screen; the drying is to dry the green brick until the water content is less than 1 percent; the glazing amount of the ground coat is 450-550g/m 2; the firing temperature is 1100-.
The rest parameters are the same as those of the specific embodiment, the high-whiteness ceramic large plate is prepared by the preparation method of the specific embodiment, the whiteness of the ceramic large plate is detected according to GBT 5950 and 1996 building material and nonmetal mineral product whiteness measurement method, and the radioactivity is detected according to GB6566-2010 building material radionuclide limits, class A decoration material standard internal irradiation index and external irradiation index standard.
The results are shown in Table 4:
TABLE 4 whiteness and radioactivity of examples 1-3 and comparative examples
As shown by the data in the table, in the examples 1-3 of the present invention, due to the addition of the green body whitening agent, the content of zirconium dioxide is 30-40 wt%, which is much lower than that of the conventional zirconium silicate whitening agent, but the whiteness of the prepared large board can exceed that of the large board product whitened by the conventional zirconium silicate; meanwhile, the radioactivity of the zirconium silicate is high, the radioactivity of the product can be improved by adding a large amount of zirconium silicate, the using amount of zirconium silicate is reduced, the radioactivity of the product is low, and the production cost and the radioactivity of the product are reduced while whitening is performed, so that the ceramic blank prepared by the method has the advantages of high whiteness and low radioactivity after being fired; taking example 1 as an example, compared with a comparative example, the cost of the blank formula is reduced by more than 10%, and the radioactivity is reduced by more than 25%.
Referring to the test data of example 2 and example 3, under the condition that the other component ratios are almost the same, the addition amount of the green body whitening agent directly influences the whiteness of the prepared large plate, in example 2, the addition amount of the green body whitening agent is more than that of example 3, so that in the performance index of the prepared ceramic large plate, the whiteness of the ceramic large plate of example 2 is higher than that of example 3 even though the addition amount of zirconium silicate which is commonly used as the whitening agent in example 2 is less than that in example 3, namely, by optimizing the use amount of the green body whitening agent, the addition amount of zirconium silicate can be reduced as much as possible, and the prepared ceramic large plate has the advantages of high whiteness and low radioactivity; in addition, experiments show that when the blank body whitening agent is used in an amount of 0.9, the whiteness of the prepared ceramic large plate is optimal;
the zirconium silicate added in the comparative examples is more than that added in the examples 1 to 3 of the invention and is 4.5 times of that added in the example 2, but the whiteness of the ceramic large plates prepared by the comparative examples is lower than that of the ceramic large plates prepared by the examples 1 to 3 of the invention after the addition of the blank whitening agent of the invention is cancelled.
Therefore, the blank whitening agent can be used for directly replacing zirconium silicate in the prior art, the using amount of the zirconium silicate in the formula is greatly reduced, the whitening effect of the blank whitening agent under the same condition is better than that of the zirconium silicate, the whiteness of the prepared large plate can exceed that of a large plate product whitened by the conventional zirconium silicate, the radioactivity is low, the product performance, the environmental protection performance and the economic benefit of the large ceramic plate are comprehensively optimized, and the production and preparation of the large high-whiteness ceramic plate are more reasonable and are suitable for large-scale popularization.
The effective components are added with water to form slurry, and the water content and the flow rate of the slurry are detected, and the results are shown in table 5:
table 5 moisture and flow rate of slurries formed in examples and comparative examples
| Index (I) | Example 1 | Example 2 | Example 3 | Comparative example |
| Water (parts by weight) | 35.1 | 34.8 | 35.5 | 34.5 |
| Flow rate of flow | 51"36 | 53"27 | 48"55 | 55"18 |
From the flow rate of the slurry shown in the table, the invention optimizes the performance of the slurry so as to effectively improve the sieving efficiency of the slurry and prevent the phenomenon of screen blockage of the slurry.
Various other changes and modifications to the above-described embodiments and concepts will become apparent to those skilled in the art from the above description, and all such changes and modifications are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (10)
1. The high-whiteness ceramic large plate is characterized by comprising the following effective components in parts by weight:
the content of zirconium dioxide in the blank whitening agent is 30-40 wt%.
2. The high-whiteness ceramic large panel according to claim 1, which comprises the following effective components in parts by weight:
3. the large high-white ceramic board according to claim 1, wherein the hard material comprises, in parts by weight:
4. the high-white ceramic large plate according to claim 1, wherein the soft material comprises, in parts by weight:
2-10 parts of high clay;
20-70 parts of kaolin;
2-10 parts of high alumina.
5. The high white ceramic panel of claim 4, wherein the kaolin comprises a first kaolin clay, a second kaolin clay, and a third kaolin clay, the first kaolin clay comprising a composition comprising SiO2 54.81wt％、Al2O3 29.98wt％、CaO 0.31wt％、MgO 0.79wt％、Fe2O3 0.88wt％、TiO2 0.1wt％、K2O 2.75wt％、Na20.39 wt% of O, 9.8 wt% of loss on ignition and 99.81 wt% of total amount; the component of the second kaolin comprises SiO2 48.37wt％、Al2O3 36.04wt％、CaO 0.2wt％、MgO 0.1wt％、Fe2O3 0.89wt％、TiO2 0.11wt％、K2O 1.52wt％、Na20.26 wt% of O, 12.3 wt% of loss on ignition and 99.79 wt% of total amount; the third kaolin comprises SiO2 49.46wt％、Al2O335.62wt％、CaO 0.22wt％、MgO 0.18wt％、Fe2O3 0.65wt％、TiO2 0.09wt％、K2O 1.51wt％、Na20.38 wt% of O, 11.76 wt% of loss on ignition and 99.87 wt% of total amount.
6. The high white ceramic panel of claim 1, wherein the composition of the green body brightener comprises: ZrO (ZrO)230-40wt％、Al2O3 40-44wt％、SiO2 20-22wt％、Fe2O3 0.1-0.5wt％、CaO 0.1-0.3wt％、MgO 0.05-0.2wt％、K2O 0.03-0.08wt％、Na2O 1.5-2.0wt％、SrO 0.3-0.4wt％、TiO20.05-0.15 wt% and loss on ignition of 1.34 wt%.
7. The high white ceramic panel of claim 6, wherein the auxiliary agents include debonders, reinforcing agents, and binders.
8. The high white ceramic panel of claim 6, wherein the debonder is sodium tripolyphosphate; the adhesive is water glass; the reinforcing agent is lignin.
9. The high-whiteness ceramic large plate according to claim 1, wherein the effective components are added with 34-36 parts by weight of water to form slurry, and the properties of the slurry are that the flow rate: 35-60s, fineness of 250 meshes: 0.8-1, specific gravity: 1.66-1.72g/cm3。
10. The preparation method of the high-whiteness ceramic large plate is characterized by comprising the following effective components in parts by weight:
sequentially performing ball milling, sieving to remove iron, powder spraying, green brick pressing, drying, glazing, ink-jet printing, sintering and polishing to obtain a high-white ceramic large plate; the content of zirconium dioxide in the blank whitening agent is 30-40 wt%.
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Application publication date: 20211221 |