CN110862231B - Dry particle glaze for soft polished brick and application thereof - Google Patents
Dry particle glaze for soft polished brick and application thereof Download PDFInfo
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- CN110862231B CN110862231B CN201911175608.7A CN201911175608A CN110862231B CN 110862231 B CN110862231 B CN 110862231B CN 201911175608 A CN201911175608 A CN 201911175608A CN 110862231 B CN110862231 B CN 110862231B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/22—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions containing two or more distinct frits having different compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C8/00—Enamels; Glazes; Fusion seal compositions being frit compositions having non-frit additions
- C03C8/02—Frit compositions, i.e. in a powdered or comminuted form
- C03C8/04—Frit compositions, i.e. in a powdered or comminuted form containing zinc
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
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Abstract
The invention discloses dry grain glaze for soft polished tiles and application thereof. The dry grain glaze for the soft polished tile comprises mixed dry grains consisting of low-temperature dry grains, medium-temperature dry grains and high-temperature dry grains, wherein the low-temperature dry grains account for 15% -35%, the medium-temperature dry grains account for 40% -70%, and the high-temperature dry grains account for 15% -35%.
Description
Technical Field
The invention belongs to the field of ceramic building materials, and particularly relates to a dry grain glaze for soft polished tiles and application thereof.
Background
Along with the development of the demands and markets of people, the types of building decoration materials are more and more, and the requirements are higher and more, and the novelty is higher and higher no matter the requirements on the layer and the transparency of the brick body materials and the patterns are higher and higher. At present, glazed tiles are mainly used in the market, and have poor transparency, more pores and more water ripples; the dry grain glaze brick has good transparency, less pores and less water ripples, and the dry grain glaze brick is more but less than the dry grain glaze brick in the current market. For example, a patent with application number 201810542478.5 entitled "a dry grain soft polishing tile production process" includes the following main process flows: the method comprises the following steps of brushing a blank, spraying water (8-10 g/disc), spraying base glaze (1.35 g/disc), spraying surface glaze (1.45 g/disc, 40 g/disc, ink-jet printing, spraying a protective layer (1.15 g/disc), spraying dry particles (1.22 g/disc), drying, putting into a kiln and sintering.
Disclosure of Invention
The invention aims to provide dry grain glaze for soft polished tiles and application thereof, and the dry grain glaze can be used for developing soft polished tiles with good transparency, few pores and few water ripples.
Aiming at the problems, the invention provides dry grain glaze for soft polished tiles, which comprises mixed dry grains consisting of low-temperature dry grains, medium-temperature dry grains and high-temperature dry grains, wherein the low-temperature dry grains account for 15% -35%, the medium-temperature dry grains account for 40% -70%, and the high-temperature dry grains account for 15% -35%.
Preferably, the low-temperature dry granules have an initial melting temperature of 1000-1030 ℃, the medium-temperature dry granules have an initial melting temperature of 1030-1060 ℃, and the high-temperature dry granules have an initial melting temperature of 1140-1170 ℃.
Preferably, the chemical composition of the mixed dry granules comprises: by mass percentage, IL (ignition loss) is 0.3-1.0%; SiO 22 55～65％；Al2O3 9～13％；CaO 8.0～12％；MgO 0.5～1.5％；K2O 4～6％；Na2O 1.5.0～3.0％；ZnO 5～8％；SrO 2～3％；BaO 0.3～0.8％。
Preferably, the particle size composition of the mixed dry particles is as follows: 60-80 meshes: 8-14%; 80-100 meshes 8-14%; 100-250 meshes: 65-80%; more than 250 meshes: less than 10%.
Preferably, the raw material composition of the low-temperature dry granules comprises: by mass, 0-10% of quartz powder, 5-8% of zinc oxide, 1-4% of barium carbonate, 35-45% of potassium feldspar, 15-25% of albite, 20-30% of calcite, 3.5-5.5% of strontium carbonate, and calcined talc: 3-5%; and/or the chemical composition of the low-temperature dry granules comprises: by mass percent, IL (loss on ignition): 13-15%; SiO 22：46～50％；Al2O3：13～15％；CaO：13～15％；MgO：0.5～ 1.5％；K2O：4～6％；Na2O：1.0～2.0％；ZnO：5～7％；SrO：2.0～4％；BaO：0.3～ 2.0％。
Preferably, the raw material composition of the medium-temperature dry granules comprises: by mass, 10-20% of quartz powder, 5-8% of zinc oxide, 0.5-2% of barium carbonate, 35-45% of potassium feldspar, 10-20% of albite, 15-25% of calcite, 2.5-4% of strontium carbonate, and calcined talc: 3-5%; and/or the chemical components of the moderate-temperature dry granules comprise: by mass percent, IL (loss on ignition): 8-12%; SiO 22：52～56％；Al2O3：10～12％；CaO：8～12％；MgO：0.5～1.5％； K2O：4～6％；Na2O：1.0～2.0％；ZnO：5～7％；SrO：2～3％；BaO：0.3～1.0％。
Preferably, the raw material composition of the high-temperature dry granules comprises: by mass, 20-30% of quartz powder, 6-9% of zinc oxide, 0.5-1% of barium carbonate, 30-40% of potassium feldspar, 10-20% of albite, 10-20% of calcite, 1.5-3% of strontium carbonate, and calcined talc: 3-5%; and/or the chemical composition of the high-temperature dry granules comprises: by mass percent, IL (loss on ignition): 7-10%; SiO 22：58～62％；Al2O3：9～11％；CaO：5～8％；MgO：0.5～1.5％；K2O： 4～6％；Na2O：1.0～2.0％；ZnO：5～7％；SrO：1～2.5％；BaO：0.3～0.6％。
Preferably, the dry granular glaze comprises: mixing dry particles by mass percent of 48-58%; dry particle suspending agent glue: 25-40%; glaze powder: 2-6%; water: 8-16%.
Preferably, the dry particle suspending agent glue comprises: the dispergator comprises the following components in percentage by mass: 2-4%; thickening agent: 15-22%; 5-8% of a dispersant; defoaming agent: 0.4-1.0%; preservative: 0.5-1.5%; leveling agent: 1-2.5%; 65-75% of water.
The invention develops a dry grain glaze which comprises mixed dry grains consisting of three dry grains with different temperatures, and a soft polishing product with good penetration feeling, less pores, less water ripples and low luminosity can be obtained by using the dry grain glaze.
In another aspect, the invention also provides the use of the dry particle glaze for the soft polished tile in the soft polished tileThe specific gravity of the dry granular glaze is 1.48-1.55, and the application amount of the dry granular glaze is 1000-1300 g/m2。
Drawings
FIG. 1 is a diagram illustrating the effect of pores after polishing on a soft polished tile according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating the effect of the polished tile surface of the soft polished tile according to one embodiment of the present invention.
Fig. 3 is a graph of the effect of pores after polishing for the soft polished tile of comparative example 1.
Fig. 4 is a graph of the effect of pores after polishing for the soft polished tile of comparative example 2.
Detailed Description
The present invention is further illustrated by the following examples, which are to be understood as merely illustrative and not restrictive. The following percentages are by mass unless otherwise specified.
The invention discloses a dry grain glaze for a soft polished brick, which comprises mixed dry grains consisting of low-temperature dry grains, medium-temperature dry grains and high-temperature dry grains. The dried particles are required to have good permeability, high wear resistance and less bubbles after burning. The dry particles with low melting point have good permeability, but the melting point is too low, and the premature melting in the firing process hinders the exhaust of a blank body and a surface glaze, so that pinholes are easily formed after the bubbles of a glaze layer are thrown. The melting point is too high, the melting effect is poor, the permeation feeling is poor, and air among dry particles is easily concentrated to form bubbles. Therefore, through various experiments, transparent dry granules with high, medium and low temperatures are matched according to a certain proportion.
In the course of development, the use of single dry pellets was first attempted. But the product after polishing has many pores and the pores are large. This is because the dried particles are melted at the same time, and there are no supporting points, so it is difficult to discharge the air from the pores. It is considered that if only two kinds of high and low temperature dry particles are used, the high or low temperature dry particles will have a bad effect on the pore exhaustion. Therefore, the invention uses three dry particles with different temperatures, wherein the proportion of the high-temperature dry particles is not high, and the temperature difference of the medium-temperature dry particles and the low-temperature dry particles is relatively close, thus promoting the exhaust and ensuring that the pore effect of the brick surface before and after polishing is relatively excellent.
In order to achieve the effects of good transparency and few pores, the dry particle formula is developed according to three temperatures and matched according to different temperature requirements and certain proportion and particle gradation. By using a dry particle formula consisting of three dry particles of high temperature, medium temperature and low temperature, different firing systems can be adapted, and pores of the product are controlled in a better range. When the fusion cake is in the fusion and air exhaust process, the low-temperature fusion cake is difficult to exhaust in the fusion process, so that the high-temperature fusion cake is required to be used as a support to facilitate air exhaust. The invention can continuously exhaust air in a wider range by using three frits with different temperatures. Ensuring that the gas is vented before the dry glaze particles are completely melted. Therefore, the dry particle glaze disclosed by the invention uses three dry particles with different temperatures, the exhaust is good, and the capillary pores are less after firing.
The chemical composition of the low-temperature dry granules can comprise: by mass percent, IL: 13-15%; SiO 22：46～ 50％；Al2O3：13～15％；CaO：13～15％；MgO：0.5～1.5％；K2O：4～6％；Na2O: 1.0 to 2.0 percent; ZnO: 5-7%; SrO: 2.0-4%; BaO: 0.3 to 2.0 percent. In some embodiments, the feedstock composition of the low temperature dry pellets may include: the raw materials of the low-temperature dry granules comprise: by mass, 0-10% of quartz powder, 5-8% of zinc oxide, 1-4% of barium carbonate, 35-45% of potassium feldspar, 15-25% of albite, 20-30% of calcite, 3.5-5.5% of strontium carbonate, and calcined talc: 3-5%. In some embodiments, the low-temperature dry pellets may be obtained by mixing and melting the above raw materials into liquid glass, quenching the liquid glass with water, and then processing the liquid glass into a desired particle size. The particle size of the dry particles can be 60 to 250 meshes. In one example, the raw materials are weighed according to the proportion, the raw materials are placed into a frit kiln to be melted into glass liquid at the temperature of 1130-1170 ℃, the glass liquid is quenched with water to obtain frit, and the water-quenched frit is processed into dry particles of 60-250 meshes to obtain low-temperature dry particles.
The chemical components of the medium-temperature dry granules comprise: by mass percent, IL: 8-12%; SiO 22：52～56％； Al2O3：10～12％；CaO：8～12％；MgO：0.5～1.5％；K2O：4～6％；Na2O: 1.0-2.0%; ZnO: 5-7%; SrO: 2-3%; BaO: 0.3 to 1.0 percent. In some embodiments, the medium temperature dry granules have a raw material composition comprising: by mass, 10-20% of quartz powder, 5-8% of zinc oxide, 0.5-2% of barium carbonate, 35-45% of potassium feldspar, 10-20% of albite, 15-25% of calcite, 2.5-4% of strontium carbonate, and calcined talc: 3-5%. In some embodiments, the medium-temperature dry pellets may be obtained by mixing and melting the above raw materials into liquid glass, quenching the liquid glass with water, and then processing the liquid glass into a desired particle size. The particle size of the dry particles can be 60 to 250 meshes. In one example, the raw materials are weighed according to the proportion, the raw materials are placed into a frit kiln to be melted into molten glass at the temperature of 1150-1200 ℃, the molten glass is quenched by water to obtain frit, and the quenched frit is processed into dry particles of 60-250 meshes to obtain medium-temperature dry particles.
The chemical components of the high-temperature dry granules comprise: by mass percent, IL: 7-10%; SiO 22：58～62％； Al2O3：9～11％；CaO：5～8％；MgO：0.5～1.5％；K2O：4～6％；Na2O: 1.0-2.0%; ZnO: 5-7%; SrO: 1-2.5%; BaO: 0.3 to 0.6 percent. In some embodiments, the feedstock composition of the high temperature dry pellets comprises: by mass, 20-30% of quartz powder, 6-9% of zinc oxide, 0.5-1% of barium carbonate, 30-40% of potassium feldspar, 10-20% of albite, 10-20% of calcite, 1.5-3% of strontium carbonate, and calcined talc: 3-5%. In some embodiments, the high-temperature dry pellets may be obtained by mixing and melting the above raw materials into liquid glass, quenching the liquid glass with water, and then processing the liquid glass into a desired particle size. The particle size of the dry particles can be 60 to 250 meshes. In one example, the raw materials are weighed according to the proportion, the raw materials are placed into a frit kiln to be melted into molten glass at the temperature of 1240-1270 ℃, the molten glass is quenched by water to obtain frit, and the quenched frit is processed into dry particles of 60-250 meshes to obtain high-temperature dry particles.
In some embodiments, the mixed dry granules comprise 15% to 35% of low-temperature dry granules, 40% to 70% of medium-temperature dry granules and 15% to 35% of high-temperature dry granules. If the proportion of the medium-temperature dry particles is too low, the low-temperature dry particles are likely to be more in the firing process, the initial melting point of the whole formula is low, pores are closed in advance when gas does not begin to be exhausted, and the gas pores cannot be exhausted; or the high-temperature dry particles are more likely to cause high initial melting point, poor melting effect and poor transparency.
In some embodiments, the low temperature dry pellets may have a melting onset temperature of 1000 to 1030 ℃. The initial melting temperature of the medium-temperature dry granules can be 1030-1060 ℃. In addition, the initial melting temperature of the high-temperature dry granules can be 1140-1170 ℃. Preferably, the initial melting temperature of the medium-temperature dry granules is 15-25 ℃ higher than that of the low-temperature dry granules, and the initial melting temperature of the high-temperature dry granules is 90-100 ℃ higher than that of the medium-temperature dry granules.
In some embodiments, the chemical composition of the blended dry pellets comprises: IL 0.3-1.0% by mass; SiO 22 55～65％；Al2O3 8～10％；CaO 8.0～12％；MgO 0.5～1.5％；K2O 4～6％；Na2O 1.5.0～3.0％；ZnO 5～8％；SrO 2～3％；BaO 0.3～0.8％。Al2O3Higher content of the component tends to make the skin opaque and poor in transparency. According to the invention, strontium carbonate is used for replacing lead oxide, and strontium oxide is introduced, so that the production of the low-temperature glaze with high gloss and high fluidity is facilitated. Also, barium carbonate and strontium carbonate can both reduce the viscosity of the glaze, and the temperature range of the glaze low viscosity is wide.
In some embodiments, the mixed dry pellets have a particle size distribution of: 60-80 meshes: 8-14%; 80-100 meshes 8-14%; 100-250 meshes: 65-80%; more than 250 meshes: less than 10%. In some embodiments, the glaze pouring process is used, the amount of dry particles is less, and the brick surface is flatter after the glaze is poured out. In addition, the glaze spraying process requires that the grain composition of dry particles cannot be too large, the dry particles are easy to precipitate, and the stable production cannot be realized. In addition, the particles are too large to facilitate air exhaust and have more pores.
In some embodiments, the dry particulate glaze comprises: mixing dry particles by mass percent of 48-58%; dry particle suspending agent glue: 25-40%; glaze powder: 2-6%; water: 8-16%. Wherein, the main function of the dry particle suspending agent glue is to prevent the dry particles from precipitating; the glaze powder can prevent dry particles from precipitating on one hand, and is beneficial to fixing the dry particles on a green body after glazing on the other hand, and particularly prevents the dry particles from being blown away by wind before the dry particles are not melted in the oxidation process. In addition, the dry granular glaze can avoid slow drying, difficult water drainage and easy brick frying caused by excessive glue content.
In some embodiments, the dry particle suspending agent glue comprises: the dispergator comprises the following components in percentage by mass: 2-4%; thickening agent: 15-22%; 5-8% of a dispersant; defoaming agent: 0.4-1.0%; preservative: 0.5-1.5%; leveling agent: 1 to 2.5 percent; 65-75% of water.
The invention also discloses application of the dry granular glaze in soft polished tiles. The process comprises the following steps: preparing dry particle glaze from the dry particles, glaze powder and suspending agent glue according to a certain proportion, glazing the dry particle glaze on the inkjet-sprayed green brick, and firing the green brick to obtain the finished product; and special polishing is matched to achieve the effect of high-simulation stone.
In some embodiments, the glazing may be applied by way of a drench. Preferably, the specific gravity of the dry granular glaze is 1.48-1.55. The amount of the dry glaze particles applied is 1000 to 1300g/m2。
In some embodiments, the maximum firing temperature is 1200 to 1240 ℃ and the firing period is 80 to 140 min. According to the development requirement of the product, dry granular glaze with different temperatures can be prepared. The sintering period is 20-40 minutes according to a conventional sintering system before 1000 ℃; the firing time is 25-40 minutes within the range of 1000-1180 ℃, and the bottom temperature is higher than the surface temperature, so that the exhaust is facilitated; the sintering time is 20 to 40 minutes within the range of 1200 to 1240 ℃. The temperature is required to be close to the surface temperature and the bottom temperature or slightly higher than the bottom temperature, and the gas is required to be pressed between the surface glaze and the dry particle layer as much as possible, so that pores are reduced; after 1240 ℃, the temperature is reduced and the sintering time in a cooling section is 15 to 30 minutes.
The polishing of the invention adopts a helical tooth grinding block, a resin grinding block, a helical tooth grinding block, a particle grinding block and a nylon fiber grinding block to control the water ripple and the luminosity of the surface. In some embodiments, 2-4 groups of 240 meshes of helical tooth grinding blocks, 8-12 groups of 320 meshes of resin grinding blocks, 7-9 groups of 400 meshes of helical tooth grinding blocks, 6-8 groups of 600 meshes of particle grinding blocks and 12-20 groups of 180-320 meshes of nylon fiber grinding blocks are adopted. The nylon fiber abrasive block can be in a single mesh specification or in a 2-4 mesh specification. In some embodiments, the inclined-tooth grinding block is used for scraping off the thickness of the surface layer of the brick within the range of 0.03-0.1 mm, so that the subsequent resin grinding block is used for cutting and flattening. And then a nylon fiber grinding block is adopted for fine polishing, polishing and polishing. The desired gloss level can thus be achieved.
By adopting the technical scheme, the invention can achieve the following beneficial effects:
creativity: the dry particle glaze consists of several dry particles with different temperatures, so that the exhaust is good, pores are reduced, and the penetration feeling is improved; according to the invention, the soft polished brick with good pore effect is obtained by using three dry granules with different temperatures and matching with a dry granule formula.
The decoration effect is good: compared with common polished tiles and other dry grain polished glazes, the product has good permeability, good antifouling performance and light intensity closer to stone.
The application range is wide: the product of the invention is not influenced by environmental factors and can be widely applied to various inner and outer walls and ground decoration.
Easy cleaning: the product is completely sintered, the water absorption rate is controlled within 0.5 percent, and the product is polished to be ultra-clean and bright, has good antifouling effect and is easy to clean.
Durable: the product of the invention has stable performance, less time and environment influence factors, high wear resistance, long service life and wide market economic benefit, and can keep new feeling for a long time.
In the concrete implementation mode of the invention, the invention mainly develops a dry grain glaze which is composed of three dry grains with different temperatures, then combines glaze powder and glue with good suspension property according to a certain proportion, applies a layer of dry grain glaze on a brick blank by a glaze pouring process, and then is fired to obtain the product, and after a special polishing process, the soft polishing product with good transparency, few pores, few water ripples and low luminosity is developed.
The present invention will be described in detail by way of examples. It is also to be understood that the following examples are illustrative of the present invention and are not to be construed as limiting the scope of the invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art may be made in light of the above teachings. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Example 1
1. Pressing the common blank powder into a blank.
2. Drying the green body by using a drying kiln, and controlling the moisture of the dried green body within 0.5 percent.
3. And ink-jet printing a pattern on the dried blank.
4. And preparing dry grain glaze. The formula of the dry granular glaze comprises: mixing dry granules 52%; dry particle suspending agent glue: 31 percent; glaze powder: 4 percent; water: 13 percent. The dry particle suspending agent glue comprises: and (3) dispergation agent: 3 percent; thickening agent: 19 percent; 6% of a dispersant; defoaming agent: 0.5 percent; preservative: 0.6 percent; leveling agent: 1.5 percent; and (5) 69.4 percent of water.
The mixed dry granules comprise: and (3) low-temperature drying: 20%, medium temperature dry granulation: 60%, high-temperature dry granulation: 20 percent. The chemical components of the mixed dry granules comprise: IL: 0.4 percent; SiO 22：60.8％；Al2O3：11.6％；CaO：9.4％；MgO：1.1％； K2O：5.1％；Na2O: 2.0 percent; ZnO: 6.6 percent; SrO: 2.5 percent; BaO: 0.5 percent. The particle composition of the mixed dry particles is as follows: 60-80 meshes: 11.2 percent; 80-100 meshes of 9.2%; 100-250 meshes: 73.4 percent; more than 250 meshes: 6.2 percent.
Wherein, the raw materials of the low-temperature dry granules comprise: 3% of quartz powder, 6% of zinc oxide, 1% of barium carbonate, 38% of potassium feldspar, 20% of albite, 25% of calcite, 3% of strontium carbonate, and calcined talc: 4 percent. The chemical components comprise: IL: 13.5 percent; SiO 22：48％；Al2O3：13.5％；CaO：14％；MgO：1.0％；K2O：5％；Na2O：1.8％；ZnO：5％；SrO：2.0％；BaO：0.35％。
The medium-temperature dry granules comprise the following raw materials: 12% of quartz powder, 7% of zinc oxide, 1% of barium carbonate, 38% of potassium feldspar, 15% of albite, 20% of calcite, 3% of strontium carbonate, and calcined talc: 4 percent. Chemical composition packageComprises the following steps: IL: 9.5 percent; SiO 22： 53.75％；Al2O3：11％；CaO：10％；MgO：1％；K2O：5％；Na2O：1.5％；ZnO：5.8％； SrO：2.0％；BaO：0.35％。
The raw material composition of the high-temperature dry granules comprises: 22% of quartz powder, 8% of zinc oxide, 1% of barium carbonate, 32% of potassium feldspar, 15% of albite, 15% of calcite, 3% of strontium carbonate, and calcined talc: 4 percent. The chemical components comprise: IL: 7.5 percent; SiO 22： 59.15％；Al2O3：9.5％；CaO：8％；MgO：1％；K2O：4.5％；Na2O：1.5％；ZnO：6.5％； SrO：2％；BaO：0.35％。
5. And (4) spraying dry grain glaze on the blank after ink-jet printing. The specific gravity of the dry granular glaze is 1.53, and the application amount is 1210g/m2。
6. And sintering the blank body after the glaze particles are dried. The specific firing parameters are as follows: the maximum firing temperature is 1221 ℃, and the firing period is 90 min.
7. And (6) polishing. The specific polishing process is shown in table 1.
TABLE 1 polishing Process parameters
As can be seen from figures 1 and 2, the pores on the brick surface are seen through the magnifier, and the pores are small. Moreover, the pore effects of the brick surface before and after polishing are almost not different. The invention uses three kinds of dry particles with different temperatures, so that the adjusting range of the kiln is wider, the exhaust is sufficient, and the adjustment of the firing system is facilitated.
Comparative example 1
Essentially the same as in example 1, except that: wherein the low-temperature dry particles account for 70 percent, the medium-temperature dry particles account for 20 percent, and the high-temperature dry particles account for 10 percent.
Fig. 3 is a diagram showing the effect of pores after polishing, at a magnification of 100. A significant pore defect can be seen in fig. 3. From this example, it can be seen that although the overall dry particle formulation is composed of three different temperatures, too many dry particles at low temperature, fewer dry particles at high temperature and medium temperature, and more pores.
Comparative example 2
Essentially the same as example 1, except that:
the raw material composition of the low-temperature dry granules comprises: 3% of quartz powder, 6% of zinc oxide, 1% of barium carbonate, 38% of potassium feldspar, 23% of albite, 25% of calcite, and calcined talc: 4 percent;
the medium-temperature dry granules comprise the following raw materials: 12% of quartz powder, 7% of zinc oxide, 1% of barium carbonate, 39% of potassium feldspar, 17% of albite, 20% of calcite, and calcined talc: 4 percent;
the raw material composition of the high-temperature dry granules comprises: 23% of quartz powder, 8% of zinc oxide, 1% of barium carbonate, 32% of potassium feldspar, 17% of albite, 15% of calcite, and calcined talc: 4 percent.
It can be seen from fig. 4 that the pore effect is not ideal. This example, while using dry pellets of three temperatures and formulations, still fails to address pore defects due to the improper formulation of the dry pellets.
Claims (8)
1. A dry grain glaze for soft polished tiles is characterized by comprising mixed dry grains consisting of low-temperature dry grains, medium-temperature dry grains and high-temperature dry grains; the mass percentage of the mixed dry particles in the dry particle glaze for the soft polished tile is 48-58%;
the raw materials of the low-temperature dry granules comprise: by mass percentage, 3-10% of quartz powder, 5-8% of zinc oxide, 1-4% of barium carbonate, 35-45% of potassium feldspar, 15-25% of albite, 20-30% of calcite, 3.5-5.5% of strontium carbonate, and calcined talc: 3-5%; the initial melting temperature of the low-temperature dry granules is 1000-1030 ℃; the low-temperature dry granules account for 15-35% of the mixed dry granules by mass;
the medium-temperature dry granules comprise the following raw materials: by mass, 10-20% of quartz powder, 5-8% of zinc oxide, 0.5-2% of barium carbonate, 35-45% of potassium feldspar, 10-20% of albite, 15-25% of calcite, 2.5-4% of strontium carbonate, and calcined talc: 3-5%; the initial melting temperature of the medium-temperature dry granules is 1030-1060 ℃; the mass percentage of the medium-temperature dry particles in the mixed dry particles is 40-70%;
the raw material composition of the high-temperature dry granules comprises: by mass, 20-30% of quartz powder, 6-9% of zinc oxide, 0.5-1% of barium carbonate, 30-40% of potassium feldspar, 10-20% of albite, 10-20% of calcite, 1.5-3% of strontium carbonate, and calcined talc: 3-5%; the initial melting temperature of the high-temperature dry granules is 1140-1170 ℃; the high-temperature dry particles account for 15-35% of the mixed dry particles by mass;
the initial melting temperature of the medium-temperature dry granules is 15-25 ℃ higher than that of the low-temperature dry granules, and the initial melting temperature of the high-temperature dry granules is 90-100 ℃ higher than that of the medium-temperature dry granules;
the particle size composition of the mixed dry particles is as follows: 60-80 meshes: 8-14%; 80-100 meshes 8-14%; 100-250 meshes: 65-80%; more than 250 meshes: less than 10%.
2. The dry glaze for soft polished tiles of claim 1, wherein the chemical composition of the mixed dry glaze comprises: 0.3-1.0% of ignition loss and SiO in percentage by mass2 55～65%、Al2O3 9～13%、CaO 8.0～12%、MgO 0.5～1.5%、K2O 4～6%、Na2O 2.0～3.0%、ZnO 5～8%、SrO 2～3%、BaO 0.3～0.8%。
3. The dry glaze for soft polished tiles of claim 1, wherein the chemical composition of the low temperature dry particles comprises: loss on ignition by mass percent: 13-15%; SiO 22：46～50%；Al2O3：13～15%；CaO：13～15%；MgO：0.5～1.5%；K2O：4～6%；Na2O：1.0～2.0%；ZnO：5～7%；SrO：2.0～4%；BaO：0.3～2.0%。
4. The dry glaze for soft polished tiles according to claim 1, wherein the medium-temperature dry glaze comprises the following chemical components: loss on ignition by mass percent: 8-12%; SiO 22：52～56%；Al2O3：10～12%；CaO：8～12%；MgO：0.5～1.5%；K2O：4～6%；Na2O：1.0～2.0%；ZnO：5～7%；SrO：2～3%；BaO：0.3～1.0%。
5. The dry glaze for soft polished tiles of claim 1, wherein the chemical composition of the high temperature dry particles comprises: loss on ignition by mass percent: 7-10%; SiO 22：58～62%；Al2O3：9～11%；CaO：5～8%；MgO：0.5～1.5%；K2O：4～6%；Na2O：1.0～2.0%；ZnO：5～7%；SrO：1～2.5%；BaO：0.3～0.6%。
6. The dry glaze for soft polishing tiles of claim 1, wherein the dry glaze comprises: by mass percentage, 48-58% of mixed dry particles, 25-40% of dry particle suspending agent glue, 2-6% of glaze powder and 8-16% of water.
7. The dry glaze for soft polished tiles of claim 6, wherein the dry suspending agent glue comprises: the adhesive comprises, by mass, 2-4% of a debonder, 15-22% of a thickener, 5-8% of a dispersant, 0.4-1.0% of an antifoaming agent, 0.5-1.5% of a preservative, 1-2.5% of a leveling agent and 65-75% of water.
8. The use of the dry glaze for soft-polished tiles according to any one of claims 1 to 7, wherein the dry glaze has a specific gravity of 1.48 to 1.55 and a coating weight of 1000 to 1300g/m2。
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| CN112340989B (en) * | 2020-11-09 | 2022-07-12 | 广东东唯新材料有限公司 | Dry particle glaze ceramic tile and preparation method thereof |
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| CN114057397B (en) * | 2021-10-25 | 2023-02-17 | 蒙娜丽莎集团股份有限公司 | Micro-light treatment method for surface of fine dry particle rock plate |
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