阅读说明：本技术 一种高透明度的耐磨抛釉釉料及其制备方法 (High-transparency wear-resistant glaze material and preparation method thereof ) 是由 罗强 李苏波 钟保民 徐瑜 李智鸿 于 2021-04-14 设计创作，主要内容包括：本发明公开了一种高透明度的耐磨抛釉釉料及其制备方法,高透明度的耐磨抛釉釉料包括生釉料粉和熔块；所述生釉料粉包括以下重量百分比的原料：高岭土8～15%；煅烧高岭土12～18%、石英12～22%、白云石12～18%、烧滑石8～15%、钾长石8～15%、氧化锌5～10%、碳酸锶5～12%、硫酸钡2～6%和镁铝尖晶石1～5%；所述熔块的原料包括冰晶石、锆英砂和烧滑石。所述高透明度的耐磨抛釉釉料在烧制时,釉层表面在玻璃体的基础上中析出镁铝尖晶石和堇青石微晶体,镁铝尖晶石和堇青石微晶体均具有透明和高硬度的特性,能增强釉面的硬度和耐磨性,而且能够使得釉层透明度高,发色好。(The invention discloses a high-transparency wear-resistant glaze polishing material and a preparation method thereof, wherein the high-transparency wear-resistant glaze polishing material comprises raw glaze powder and a frit; the raw glaze powder comprises the following raw materials in percentage by weight: 8-15% of kaolin; 12-18% of calcined kaolin, 12-22% of quartz, 12-18% of dolomite, 8-15% of calcined talc, 8-15% of potassium feldspar, 5-10% of zinc oxide, 5-12% of strontium carbonate, 2-6% of barium sulfate and 1-5% of magnesium aluminate spinel; the frit comprises the raw materials of cryolite, zircon sand and calcined talc. When the high-transparency wear-resistant polished glaze material is fired, magnesia-alumina spinel and cordierite microcrystals are separated out from the surface of the glaze layer on the basis of the glass body, and both the magnesia-alumina spinel and the cordierite microcrystals have the characteristics of transparency and high hardness, so that the hardness and wear resistance of the glaze layer can be enhanced, and the glaze layer has high transparency and good color development.)

1. A wear-resistant glaze material with high transparency is characterized in that: comprises raw glaze powder and frit; the weight ratio of the raw glaze powder to the frit is (5-7): (3-5);

the raw glaze powder comprises the following raw materials in percentage by weight: 8-15% of kaolin; 12-18% of calcined kaolin, 12-22% of quartz, 12-18% of dolomite, 8-15% of calcined talc, 8-15% of potassium feldspar, 5-10% of zinc oxide, 5-12% of strontium carbonate, 2-6% of barium sulfate and 1-5% of magnesium aluminate spinel;

the frit comprises the raw materials of cryolite, zircon sand and calcined talc.

2. The high-transparency wear-resistant polished glaze material according to claim 1, wherein: the clinker aggregate comprises the following raw materials in percentage by weight, wherein the addition amount of cryolite is less than or equal to 8%, the addition amount of burning talc is greater than or equal to 20%, and the addition amount of zircon sand is less than or equal to 3%.

3. The high-transparency wear-resistant polished glaze material according to claim 2, wherein: the frit comprises the following raw materials in percentage by weight: 22-30% of kaolin, 5-10% of calcined alumina, 1-3% of zircon sand, 2-8% of cryolite, 10-16% of quartz, 4-10% of potash feldspar, 20-30% of calcined talc, 4-8% of zinc oxide, 10-20% of calcite and 2-5% of fluorite.

4. The high-transparency wear-resistant polished glaze material according to claim 1, wherein: the magnesium aluminate spinel is artificially synthesized powder by an electric melting method, and comprises the following chemical components in percentage by mass: 24 to 29 percent of MgO and 71 to 76 percent of Al₂O₃。

5. A preparation method of a high-transparency wear-resistant polishing glaze material, which is used for preparing the high-transparency wear-resistant polishing glaze material as claimed in any one of claims 1 to 4, and is characterized in that: the method comprises the following steps:

weighing raw glaze powder raw materials and frits according to the proportion, and uniformly mixing the frits and the raw glaze powder raw materials;

adding sodium carboxymethylcellulose, sodium tripolyphosphate and water, and performing ball milling for 24h to obtain a ball milling solution;

filtering the ball milling liquid by a 100-mesh sieve, and collecting filtrate to obtain the wear-resistant glaze polishing slurry with high transparency.

6. The preparation method of the wear-resistant polished glaze material with high transparency according to claim 5, wherein the glaze material is prepared by the following steps: the method also comprises the step of preparing the frit, wherein the frit comprises the following steps:

weighing raw materials of the frit according to the proportion, and uniformly mixing;

and firing the raw materials at high temperature, and discharging the raw materials into a cold water tank to obtain the frit.

7. The preparation method of the wear-resistant polished glaze material with high transparency according to claim 6, wherein the glaze material is prepared by the following steps: the temperature profile of the high-temperature firing comprises:

(1) heating to 300 deg.C from normal temperature, and taking 90 min;

(2) heating from 300 deg.C to 1100 deg.C, and taking 90 min;

(3) heating from 1100 deg.C to 1450 deg.C, and consuming 55 min;

(4) heating from 1450 deg.C to 1540 deg.C, and taking 5 min;

(5) reducing the temperature from 1540 ℃ to 1450 ℃ and consuming 5 min;

(6) keeping the temperature at 1450 ℃ for 30 min.

8. The preparation method of the wear-resistant polished glaze material with high transparency according to claim 5, wherein the glaze material is prepared by the following steps: calculated according to the total weight percentage of the high-transparency wear-resistant polishing glaze material, the addition amount of the sodium carboxymethyl cellulose is 0.2%, the addition amount of the sodium tripolyphosphate is 0.45%, and the addition amount of the water is 35%.

9. The high-transparency wear-resistant polished glaze according to claim 5The preparation method of the glaze is characterized by comprising the following steps: after ball milling, the fineness of the high-transparency wear-resistant glaze material slurry is 325 meshes, and the specific gravity of the glaze slurry is 1.85-1.95 g/cm³And the flow rate of the high-transparency wear-resistant glaze material is 30-60 s.

Technical Field

The invention relates to the technical field of architectural ceramics, in particular to a wear-resistant glaze material with high transparency and a preparation method thereof.

Background

At present, the glazed brick is favored by consumers due to rich patterns and substantial price, but the existing glazed brick has lower hardness and is easy to generate scratches. The abrasion degree of the glazed brick is increased along with the use time, so that the glossiness of the glazed brick is obviously reduced, the surface is dull, the appearance is seriously influenced, and the requirements of consumers are difficult to meet.

In the prior glazed brick, corundum is mainly introduced into glaze to improve the content of alumina in the glaze, thereby achieving the purpose of improving the hardness of the glaze. However, in practical applications, it is found that although alumina can increase the hardness of the glaze, the introduction of an excessive amount of corundum crystals in the glaze increases the total porosity, resulting in a reduction in the antifouling performance of the glaze; meanwhile, the increase of the content of the alumina can reduce the transparency of the glaze, influence the color development of the glaze and deteriorate the transparency of the glaze.

Disclosure of Invention

The invention aims to provide a high-transparency wear-resistant glaze material for polishing, so as to solve the contradiction between the transparency of the glaze surface and the wear resistance of the glaze surface; in addition, a preparation method of the high-transparency wear-resistant polishing glaze is also provided, so as to produce the high-transparency wear-resistant polishing glaze.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a wear-resistant glaze material with high transparency, which comprises raw glaze material powder and a frit; the weight ratio of the raw glaze powder to the frit is (5-7): (3-5);

the raw glaze powder comprises the following raw materials in percentage by weight: 8-15% of kaolin; 12-18% of calcined kaolin, 12-22% of quartz, 12-18% of dolomite, 8-15% of calcined talc, 8-15% of potassium feldspar, 5-10% of zinc oxide, 5-12% of strontium carbonate, 2-6% of barium sulfate and 1-5% of magnesium aluminate spinel;

the frit comprises the raw materials of cryolite, zircon sand and calcined talc.

In the high-transparency wear-resistant polishing glaze, the addition amount of the cryolite is less than or equal to 8 percent, the addition amount of the calcined talc is greater than or equal to 20 percent, and the addition amount of the zircon sand is less than or equal to 3 percent, calculated according to the weight percentage of the total raw materials of the clinker.

In the high-transparency wear-resistant glaze material, the frit comprises the following raw materials in percentage by weight: 22-30% of kaolin, 5-10% of calcined alumina, 1-3% of zircon sand, 2-8% of cryolite, 10-16% of quartz, 4-10% of potash feldspar, 20-30% of calcined talc, 4-8% of zinc oxide, 10-20% of calcite and 2-5% of fluorite.

In the high-transparency wear-resistant glaze-polishing glaze, the magnesia-alumina spinel is artificially synthesized powder by an electric melting method, and comprises the following chemical components in percentage by mass: 24 to 29 percent of MgO and 71 to 76 percent of Al2O 3.

The invention also provides a preparation method of the high-transparency wear-resistant glaze material, which is used for preparing the high-transparency wear-resistant glaze material and comprises the following steps:

weighing raw glaze powder raw materials and frits according to the proportion, and uniformly mixing the frits and the raw glaze powder raw materials;

adding sodium carboxymethylcellulose, sodium tripolyphosphate and water, and performing ball milling for 24h to obtain a ball milling solution;

filtering the ball milling liquid by a 100-mesh sieve, and collecting filtrate to obtain the wear-resistant glaze polishing slurry with high transparency.

The preparation method of the high-transparency wear-resistant polishing glaze material further comprises the step of preparing a frit, wherein the frit comprises the following steps:

weighing raw materials of the frit according to the proportion, and uniformly mixing;

and firing the raw materials at high temperature, and discharging the raw materials into a cold water tank to obtain the frit.

In the preparation method of the high-transparency wear-resistant polishing glaze, the temperature curve of the high-temperature firing comprises the following steps:

(1) heating to 300 deg.C from normal temperature, and taking 90 min;

(2) heating from 300 deg.C to 1100 deg.C, and taking 90 min;

(3) heating from 1100 deg.C to 1450 deg.C, and consuming 55 min;

(4) heating from 1450 deg.C to 1540 deg.C, and taking 5 min;

(5) reducing the temperature from 1540 ℃ to 1450 ℃ and consuming 5 min;

(6) keeping the temperature at 1450 ℃ for 30 min.

In the preparation method of the high-transparency wear-resistant polishing glaze, the addition amount of the sodium carboxymethyl cellulose is 0.2%, the addition amount of the sodium tripolyphosphate is 0.45%, and the addition amount of the water is 35% calculated according to the total weight percentage of the high-transparency wear-resistant polishing glaze.

In the preparation method of the high-transparency wear-resistant glaze material, after ball milling, the fineness of the high-transparency wear-resistant glaze material slurry is 325 meshes, the specific gravity of the glaze slurry is 1.85-1.95 g/cm3, and the flow rate of the high-transparency wear-resistant glaze material is 30-60 s.

The wear-resistant glaze material with high transparency provided by the invention has the following beneficial effects:

magnesium aluminate spinel is also introduced into the raw glaze powder of the high-transparency wear-resistant glaze material, and the magnesium aluminate spinel crystallizes in the glaze layer after being fired, so that the hardness of the glaze layer can be enhanced. The high-transparency wear-resistant glaze material introduces cryolite into the frit, and the cryolite can reduce the melting point of alumina in the frit formula and promote the alumina to be dissolved in a glass binder, so that the transparency and the hardness of the frit are improved. When the high-transparency wear-resistant polished glaze material is fired, magnesia-alumina spinel and cordierite microcrystals are separated out from the surface of the glaze layer on the basis of the glass body, and both the magnesia-alumina spinel and the cordierite microcrystals have the characteristics of transparency and high hardness, so that the hardness and wear resistance of the glaze layer can be enhanced, and the glaze layer has high transparency and good color development.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments. In order to facilitate an understanding of the present invention, a more complete description of the present invention is provided below. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

The examples, where specific techniques or conditions are not indicated, are to be construed according to the techniques or conditions described in the literature in the art or according to the product specifications. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention provides a wear-resistant glaze material with high transparency, which comprises raw glaze material powder and a frit; the weight ratio of the raw glaze powder to the frit is (5-7): (3-5);

the raw glaze powder comprises the following raw materials in percentage by weight: 8-15% of kaolin; 12-18% of calcined kaolin, 12-22% of quartz, 12-18% of dolomite, 8-15% of calcined talc, 8-15% of potassium feldspar, 5-10% of zinc oxide, 5-12% of strontium carbonate, 2-6% of barium sulfate and 1-5% of magnesium aluminate spinel;

the frit comprises the raw materials of cryolite, zircon sand and calcined talc.

In the raw glaze powder, kaolin plays a role in improving the performance of glaze slip, improving the suspension property of the glaze slip and preventing the precipitation of the glaze slip. The quartz can be mixed with CaO and Na in glaze material during firing₂O, MgO and K in potassium feldspar₂And the fusible matters such as O and the like are fused to generate the transparent quartz glass, so that the mechanical strength of the glaze can be increased, and the hardness of the glaze can be improved.

The potassium feldspar functions as a flux, but the content of the potassium feldspar cannot exceed the range of 15%, otherwise the wear resistance and hardness are affected. Dolomite is used to incorporate the magnesia and calcium carbonate constituents, but the dolomite content cannot exceed 18%, otherwise the increase in the magnesia component reduces the refractive index of the vitreous phase of the glaze, thereby reducing the transparency of the glaze. With talc fired to act as a fluxThe sintering temperature is effectively reduced, a liquid phase is formed at a lower temperature, and mullite crystals are promoted to be formed, so that the content of the sintered talc is not lower than 8 percent, otherwise, the hardness and the wear resistance of the glaze are reduced; mullite of the formula 3Al₂O₃·2SiO₂At high temperature, Al in glaze₂O₃And SiO₂React with each other to generate mullite crystals. Strontium carbonate introduces strontium oxide into the glaze, barium sulfate introduces barium oxide into the glaze, the transparency of the glaze can be improved by strontium oxide and barium oxide, and strontium oxide also plays a role in improving the wear resistance of the glaze. The content of barium sulfate is not more than 6 percent, and too high can reduce the hardness and the wear resistance of the glaze. The zinc oxide can enhance the color development of the glaze surface, can increase the mechanical elasticity of the glaze and the strength of the glaze within a certain range, and promotes the precipitation of high-hardness transparent cordierite crystals in a high-transparency wear-resistant glaze material system.

Magnesium aluminate spinel is also introduced into the raw glaze powder, and the magnesium aluminate spinel crystallizes in the glaze layer after being fired, so that the hardness of the glaze layer can be enhanced. The frit introduces cryolite which can reduce the melting point of alumina in the frit formula and promote the alumina to be dissolved in a glass binder, thereby improving the transparency and hardness of the frit. Zircon sand plays a role in enhancing the hardness of the frit, but the content of zircon sand cannot exceed 3%, otherwise transparency and antifouling properties are affected. The sintering talc is a provider of magnesium element, and the frit system also contains aluminum element, silicon element and calcium element; the frit is sufficiently fused into a Si-Al-Mg-Ca molten glass body during firing to form cordierite crystallites.

When the high-transparency wear-resistant polished glaze material is fired, magnesia-alumina spinel and cordierite microcrystals are separated out from the surface of the glaze layer on the basis of the glass body, and both the magnesia-alumina spinel and the cordierite microcrystals have the characteristics of transparency and high hardness, so that the hardness and wear resistance of the glaze surface can be enhanced, and the glaze layer has high transparency and good color development.

Further, the addition amount of the cryolite is less than or equal to 8%, the addition amount of the burning talc is greater than or equal to 20%, and the addition amount of the zircon sand is less than or equal to 3% calculated according to the weight percentage of the total raw materials of the clinker.

The cryolite is internally provided with aluminum element, if the addition amount of the cryolite is more than 8%, the aluminum element content in the high-transparency wear-resistant glaze polishing glaze system is too high, the melting temperature of the glaze is increased, the high-temperature viscosity of the glaze is increased, and the phenomena of cracking and porosity of the glaze can occur due to too much use amount, so that the flatness of a glaze layer is influenced, and the anti-fouling capability of the high-transparency wear-resistant glaze polishing glaze is reduced.

The addition of the calcined talc for providing the magnesium element, wherein the addition amount of the calcined talc is less than 20%, results in insufficient magnesium element content, so that the frit cannot generate enough cordierite crystals during firing, and the hardness and wear resistance of the high-transparency wear-resistant polished glaze material are reduced.

The content of the zircon sand exceeds 3 percent, which influences the transparency and antifouling property of the wear-resistant glaze material with high transparency.

Further, the frit comprises the following raw materials in percentage by weight: 22-30% of kaolin, 5-10% of calcined alumina, 1-3% of zircon sand, 2-8% of cryolite, 10-16% of quartz, 4-10% of potash feldspar, 20-30% of calcined talc, 4-8% of zinc oxide, 10-20% of calcite and 2-5% of fluorite.

In the process of firing the frit, cordierite microcrystal can be crystallized on the surface of the glaze layer on the basis of the glass body, and the cordierite microcrystal has the characteristics of transparency, high hardness and the like and has good mechanical properties. Therefore, the cordierite crystal can enhance the hardness of the glaze, avoid the glaze from being rubbed by hard objects, obviously increase the wear resistance of the glaze, and the glaze layer has high transparency and good color development.

The potash feldspar and the calcite play a role of a fluxing agent, the content of the calcite cannot be lower than 10%, otherwise, the high-temperature viscosity of the clinker is high due to insufficient fluxing agent. The zinc oxide is an active flux and can promote crystal precipitation.

The main component of fluorite is calcium fluoride which has the function of reducing the high-temperature viscosity of the clinker, so that the clinker can be completely discharged from the heating equipment, and the output of the clinker is improved. However, the content of fluorite cannot exceed 5%, otherwise the clinker furnace is easily corroded, and the service life of the clinker furnace is reduced.

Preferably, the weight ratio of the raw glaze powder to the frit is (5-7): (3-5). In a preferred embodiment, the wear-resistant polishing glaze material with high transparency has better performances of hardness, wear resistance, transparency and the like. In the most preferred embodiment, the weight ratio of the raw glaze powder to the frit is 6: 4.

Optionally, the magnesium aluminate spinel is artificially synthesized powder by an electric melting method, and the chemical components include, by mass: 24 to 29 percent of MgO and 71 to 76 percent of Al₂O₃。

The Mohs hardness of the magnesia-alumina spinel is 8.5, the melting point is 2135 ℃, the magnesia-alumina spinel synthesized by an artificial electric melting method has large volume density, good color and luster, good thermal shock stability and strong erosion resistance, and the magnesia-alumina spinel has stable structure and does not have phase transformation at high temperature. The crystal has a refractive index of 1.68-1.72 and high transparency. Therefore, it has the characteristics of transparency and high hardness similar to cordierite. Because of high hardness and high melting point, the glaze layer can enhance the hardness and wear resistance of the glaze surface, and has high transparency and good color development.

The invention also provides a preparation method of the high-transparency wear-resistant glaze material, which is used for preparing the high-transparency wear-resistant glaze material and comprises the following steps:

weighing raw glaze powder raw materials and frits according to the proportion, and uniformly mixing the frits and the raw glaze powder raw materials;

adding sodium carboxymethylcellulose, sodium tripolyphosphate and water, and performing ball milling for 24h to obtain a ball milling solution;

filtering the ball milling liquid by a 100-mesh sieve, and collecting filtrate to obtain the wear-resistant glaze polishing slurry with high transparency.

Specifically, the preparation method of the high-transparency wear-resistant polishing glaze further comprises the step of preparing a frit, wherein the frit comprises the following steps:

weighing raw materials of the frit according to the proportion, and uniformly mixing;

and firing the raw materials at high temperature, and discharging the raw materials into a cold water tank to obtain the frit.

In the preparation method, the fluorite is contained in the frit, so that bubbles are produced under high-temperature conditions in the sintering process of the frit; the frit is pre-fired and then mixed with the raw glaze powder, so that gas generated under a high-temperature condition can be discharged when the frit is prepared, the probability of pores on a glaze surface of the high-transparency wear-resistant glaze-polishing glaze is reduced, the problem that pollutants are accumulated on the pores and are difficult to clean is avoided, and the anti-fouling capability of the glaze surface is improved.

Moreover, by means of pre-firing the frit and mixing the frit with the raw glaze powder, cordierite crystals can be precipitated at a stable crystallization temperature during frit firing; the problem that the firing temperature of the glaze is not matched with the crystallization temperature of cordierite crystals is avoided, and the quantity of the cordierite crystals of the high-transparency wear-resistant polished glaze can be increased, so that the hardness and the wear resistance of the high-transparency wear-resistant polished glaze are improved.

Specifically, the temperature profile of the high-temperature firing includes:

(1) heating to 300 deg.C from normal temperature, and taking 90 min;

(2) heating from 300 deg.C to 1100 deg.C, and taking 90 min;

(3) heating from 1100 deg.C to 1450 deg.C, and consuming 55 min;

(4) heating from 1450 deg.C to 1540 deg.C, and taking 5 min;

(5) reducing the temperature from 1540 ℃ to 1450 ℃ and consuming 5 min;

(6) keeping the temperature at 1450 ℃ for 30 min.

The temperature curve of the high-temperature sintering of the frit comprises 6 stages, namely a preheating stage, a melting stage, a rapid heating stage, a rapid cooling stage and a heat preservation stage.

The preheating stage is divided into two processes of increasing from normal temperature to 300 ℃ and increasing from 300 ℃ to 1100 ℃. The process of raising the temperature from normal temperature to 300 ℃ plays a role in removing free water, and simultaneously protects the heating device from rapid cooling and rapid heating, thereby avoiding the loss caused by rapid cooling and rapid heating; the process of raising the temperature from 300 ℃ to 1100 ℃ plays a role of removing crystal water, and at the moment, cosolvents such as potassium, sodium, calcium elements and the like are dissolved.

The process from 1100 ℃ to 1450 ℃ is a melting stage, at which time cryolite begins to dissolve and forms a solid solution with alumina aggregate, and the three elements silicon, aluminum and magnesium form a cordierite melt at 1400 ℃. The fluorite can obviously reduce the high-temperature viscosity and promote the melting of the alumina.

The process of raising the temperature from 1450 ℃ to 1540 ℃ is a rapid temperature raising stage, and the rapid temperature raising aims to promote the alumina to be fully melted under the high-temperature condition so as to participate in the reaction as much as possible, thereby achieving the purpose of promoting the formation of a cordierite crystal phase.

The process of reducing the temperature from 1540 ℃ to 1450 ℃ is a rapid cooling stage, the melt viscosity is increased after the rapid cooling, the growth of cordierite crystals is inhibited, the size of cordierite in molten frit can be reduced, the cordierite crystals are fully microcrystallized, and the transparency of the frit is further improved.

The process of heat preservation at 1450 ℃ for 30min is a heat preservation stage, and by the arrangement, the molten components are more stable, the uniformity is good, and the discharging is convenient.

Specifically, the addition amount of the sodium carboxymethylcellulose is 0.2%, the addition amount of the sodium tripolyphosphate is 0.45%, and the addition amount of the water is 35% by weight percentage based on the total weight of the high-transparency wear-resistant polishing glaze material.

The sodium carboxymethylcellulose can ensure that the glaze is in a stable dispersion state, enhance the suspension property and the dispersibility of the slurry, prevent the particles from coagulating and ensure that the slurry is uniformly dispersed. The sodium tripolyphosphate plays a role in preventing the slurry from precipitating, promoting the exhaust and bubble removal of the slurry, changing the rheological property of the slurry and improving the quality of a glaze layer.

The weight percentage of the fusion cake and the raw glaze powder is 100 percent, and the addition amount of the sodium carboxymethyl cellulose, the sodium tripolyphosphate and the water is the additional addition amount.

Specifically, after ball milling, the fineness of the high-transparency wear-resistant polishing glaze slurry is 325 meshes, and the specific gravity of the glaze slurry is 1.85-1.95 g/cm³And the flow rate of the high-transparency wear-resistant glaze material is 30-60 s.

In the actual production process, the fineness of the slurry is 325 meshes, and the specific gravity of the glaze slurry is 1.85-1.95 g/cm³And when the flow rate is 30-60 s, the parameters required by the production process are met.

Example group A

A preparation method of a wear-resistant glaze material with high transparency comprises the following steps:

weighing the raw materials according to the mineral composition of the clinker in the table 1, and uniformly mixing;

high-temperature firing was carried out according to the following temperature profile:

(1) heating to 300 deg.C from normal temperature, and taking 90 min;

(2) heating from 300 deg.C to 1100 deg.C, and taking 90 min;

(3) heating from 1100 deg.C to 1450 deg.C, and consuming 55 min;

(4) heating from 1450 deg.C to 1540 deg.C, and taking 5 min;

(5) reducing the temperature from 1540 ℃ to 1450 ℃ and consuming 5 min;

(6) keeping the temperature at 1450 ℃ for 30 min.

Discharging the materials into a cold water tank to obtain a frit;

weighing raw materials according to the mineral composition of the raw glaze powder in the table 2, and uniformly mixing the raw materials of the frit and the raw glaze powder according to the proportion;

adding 0.2 percent by weight of sodium carboxymethylcellulose, 0.45 percent by weight of sodium tripolyphosphate and 35 percent by weight of water, and carrying out ball milling for 24 hours to obtain ball milling liquid;

filtering the ball milling liquid by a 100-mesh sieve, and collecting filtrate to obtain high-transparency wear-resistant glaze polishing slurry; the fineness of the high-transparency wear-resistant glaze material slurry is 325 meshes, and the specific gravity of the glaze slurry is 1.85-1.95 g/cm³And the flow rate of the high-transparency wear-resistant glaze material is 30-60 s, and the flow rate is obtained by a coating-4 flow rate cup test.

And (4) pouring glaze in a bell jar glaze pouring mode, drying, sintering in a kiln, and polishing to obtain the wear-resistant polished glaze brick.

The ratio of the raw glaze powder to the frit is shown in Table 3

Comparative example group B

Comparative example set B was prepared in the same manner as example set a, with the mineral composition of the frit being shown in table 4, the mineral composition of the green frit powder being shown in table 5, and the ratio of green frit powder to frit being 6: 4.

And (3) performance testing:

1. mohs hardness determination: and (4) stably placing the polished tile sample on a hard support with the facing upwards. The surface of a sample is scribed by selecting standard ores with different Mohs values from small to large, the surface of the sample is scribed uniformly and vertically by applying force through a new ore cutting edge, the force application needs to be moderate, and the cutting edge of the standard ore cannot be broken by excessive force application to form double-line or multi-line scribing traces. The lowest hardness value which just can generate obvious scratches is taken as the test result, and the lowest value of all the test values of the test sample is taken as the test result.

2. And (3) determining the wear resistance: GB/T3810.7-2016, part 7 of the ceramic tile testing method: the method for testing the wear resistance of the glazed surface of the glazed tile tests the wear resistance of the glazed surface of the product, and the wear resistance of the ceramic tile is evaluated by placing a grinding medium on the glazed surface and rotating the glazed surface and observing and comparing a worn sample with an unworn sample.

3. And (3) antifouling rating measurement: the pollution agent for testing the pollution resistance of the ceramic tile comprises a paste pollution agent, a pollution agent capable of generating an oxidation reaction, a pollution agent capable of generating a film, olive oil and the like, wherein the pollution resistance is classified into 1-5 grades according to the difficulty of cleaning, and the higher the grade is, the better the pollution resistance is.

4. Transparency is determined by direct solar transmittance: the direct sunlight transmittance of the building glass is measured by using a method for measuring the direct sunlight transmittance of GB/T2680-94. The method for measuring the light transmittance of the glaze surface comprises the following steps: and (2) distributing glaze powder on the blank powder, wherein the thickness of the glaze powder is 5mm, the thickness of the blank powder is 2mm, pressing the blank powder into blocks by a press, after sintering in a kiln, throwing off the blank body, processing the blank body into a sheet with the thickness of 1mm, and then measuring the direct transmittance of sunlight.

The performance tests 1-4 were performed on example group A and comparative example group B to obtain Table 6.

From the test results between comparative example group a, it can be seen that the hardness, abrasion resistance, transparency and anti-fouling performance of the high-transparency abrasion-resistant glaze material are best when the weight ratio of the raw glaze powder to the frit is 6: 4.

Compared with example group a, the high-transparency abrasion-resistant glaze material has a reduced transparency and stain-proofing property due to the zircon sand content of the frit of comparative example 1 being greater than 3%. Since the amount of cryolite added to the frit of comparative example 2 was greater than 8%, the flatness of the high-transparency wear-resistant glaze was reduced, resulting in a reduction in antifouling performance. The frit of comparative example 3 has a small content of the firing talc, so that cordierite crystals are produced in a small amount, resulting in a decrease in hardness and abrasion resistance. The dolomite in comparative example 4 is greater than 18%, increasing the magnesium oxide component, reducing the refractive index of the glaze glass phase, and thus reducing the transparency of the glaze. The calcined talc of the raw glaze powder in comparative example 5 was less than 8%, reducing the glaze hardness and abrasion resistance. The absence of magnesium aluminate spinel from the green glaze powder of comparative example 6 results in a reduction in glaze hardness and abrasion resistance.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Other embodiments of the invention will occur to those skilled in the art without the exercise of inventive faculty based on the explanations herein, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined in the appended claims.