Zirconium-free and titanium-free quartz-based ceramic tile base glaze and method for preparing ceramic tile using the same

Abstract

The present application relates to zirconium-free and titanium-free quartz-based ceramic tile underglaze, and a preparation method of the ceramic tile using the underglaze. The zirconium-free and titanium-free quartz-based ceramic tile underglaze comprises, by weight: 5-8 parts of talc, 6-8 parts of wollastonite, 10-20 parts of potassium feldspar, 0-3 parts of calcined kaolin, 8-10 parts of kaolin, 35-40 parts of nepheline syenite, and 18-22 parts of high-purity high-white quartz powder. The chemical composition of the underglaze comprises, by weight percentage: 2.07-3.87% of LOI, 62.64-64.25% of SiO2, 18.47-19.34% of Al2O3, 0.10-0.32% of Fe2O3, 2.67-4.75% of CaO, 2.05-2.38% of MgO, 2.07-2.15% of K2O, and 5.02-7.17% of Na2O. The present application provides a zirconium-free and titanium-free quartz-based ceramic tile underglaze with low cost, wide firing range, uniform color development, white degree of 66-72° after firing, and glossiness of 4-7°.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of building ceramics, and particularly relates to a zirconium-free and titanium-free quartz-based ceramic tile body glaze and a preparation method of the ceramic tile using the body glaze. BACKGROUND

[0002] In the building ceramic industry, body glaze (also known as cosmetic clay) has been widely used because it can cover the color and part of the defects of the ceramic body, has a strong hiding effect, reduces the selection requirement of raw materials for the body, and can greatly reduce the product cost. According to the production summary experience in the industry for many years, to realize the hiding effect and ensure the production quality of the product in the later period, the body glaze is generally required to have a whiteness of 55-70° and a glossiness of 4-10° after firing.

[0003] At present, the body glaze used in the industry mainly includes zirconium-based opacified body glaze and titanium-based opacified body glaze. Although the zirconium-based opacified body glaze has a relatively high radioactivity, it has a high refractive index of 1.93-2.01, has a good opacifying effect, has high whiteness, strong wear resistance, can widen the firing temperature range of glaze, is not affected by the firing atmosphere, and has other advantages. However, since stable and high-quality zircon sand resources have not been found in China, most of the zircon sand raw materials used in the ceramic industry depend on import, and the dependence on the international market is high. In recent years, with the continuous rise of global commodity prices, the price of zircon sand is also rising, which greatly increases the cost of ceramic enterprises, forcing ceramic process technicians to use various technical means to find a substitute for zirconium silicate in the increasingly fierce market competition, and reduce the comprehensive cost of the body glaze.

[0004] On the other hand, in order to eliminate the radioactive radiation hazard caused by the raw material associated radioactive substances of zirconium silicate, and at the same time to alleviate the pressure of dependence on imported zircon sand resources, in recent years most industry technical personnel have focused on the research of low-cost non-radioactive titanium-based opacified underglaze, such as CN111499202A, CN109293238A, CN115304277A, CN116040945B, etc. The high solar reflectance opacified glaze and its preparation method disclosed in CN111499202A controls the molar ratio of calcium and titanium in the opacified glaze within a certain range, promotes the reaction of titanium dioxide and calcite in the opacified glaze during the firing process to generate titanite, and avoids the existence of rutile crystal phase of titanium dioxide at high temperature to cause the glaze to turn yellow. However, this technical solution which uses titanite crystal grains as seeds to induce the reaction of titanium dioxide and calcite to generate titanite crystal phase with a particle size of 450-600 nm requires the addition of a large amount of calcite, and the underglaze must be melted to completely react, which will cause the gloss of the actual kiln temperature fired underglaze to be very high, deviating from the experience principle that the general gloss of the underglaze for ceramic production is controlled at 4-10°, resulting in a lower minimum eutectic point of the glaze composition in the opacified glaze and a narrower melting temperature range, which is prone to produce defects such as pinholes and pimples on the glaze surface. The titanium white opacified underglaze and ceramic plate disclosed in CN115304277A need to prepare titanium white frit as an opacifying agent, and strictly control the content of alumina and calcium in the formula to enable the solid-phase reaction of titanium dioxide and wollastonite to synthesize titanite without the existence of rutile crystal phase of titanium dioxide during the firing process at a ring temperature of 1100-1150°C and a firing period of 60 min, thereby better inhibiting the tendency of rutile-type titanium dioxide to turn yellow and making the glaze surface not yellow. However, the firing range is too narrow and is not suitable for platform conversion. The ceramic tile underglaze, ceramic tile and preparation method disclosed in CN116040945B introduce metatitanic acid and brucite into the ceramic tile underglaze formula, generate a magnesium titanate opacified phase through solid-phase reaction, the gloss of the glaze surface is <10 degrees, the whiteness is between 60-70 degrees, and the underglaze is more relaxed than the underglaze containing titanium white frit, which can be fired at a high temperature of 1150-1250°C. However, in fact, the stability of the product is not enough, and the glaze surface of the product will still turn yellow after a long time of sunlight. In summary, the opacified underglaze containing titanium components is not stable enough when used at high temperature platform (firing temperature >1000°C), and there is always a risk of discoloration. SUMMARY

[0005] The technical problem solved by the present application is to overcome the deficiencies in the prior art, provide a high-white zirconium-free titanium-free quartz-based ceramic tile body glaze which does not contain zirconium element in the body glaze formula, is free of radioactivity, raw materials are not dependent on imports, and has relatively low cost, solves the problems of high cost and high radioactivity caused by zirconium silicate whitening, and also does not contain titanium element in the body glaze formula, solves the problems of narrow firing range, instability and discoloration of titanium-based glaze body glaze.

[0006] The technical solution of the present application is the zirconium-free titanium-free quartz-based ceramic tile body glaze, which is characterized in that the following components are composed by weight parts: 5-8 parts of talc, 6-8 parts of wollastonite, 10-20 parts of potassium feldspar, 0-3 parts of calcined kaolin, 8-10 parts of kaolin, 35-40 parts of nepheline syenite, and 18-22 parts of high-purity high-white quartz powder; and the corresponding chemical components are composed by weight percentage: 2.07-3.87% of LOI, 62.64-64.25% of SiO2, 18.47-19.34% of Al2O3, 0.10-0.32% of Fe2O3, 2.67-4.75% of CaO, 2.05-2.38% of MgO, 2.07-2.15% of K2O, and 5.02-7.17% of Na2O.

[0007] Preferably, the ceramic tile base glaze is further composed of the following components by weight: 5 parts of talc, 6.5 parts of wollastonite, 20 parts of potassium feldspar, 2 parts of calcined kaolin, 8 parts of kaolin, 36 parts of nepheline powder, and 18 parts of high-purity high-white quartz powder; the corresponding chemical composition is composed of the following components by weight percentage: LOI 2.17%, SiO2 64.21%, Al2O3 19.24%, Fe2O30.13%, CaO 4.75%, MgO 2.35%, K2O 2.11%, and Na2O 5.04%.

[0008] Preferably, the nepheline powder is a powdery object ground from nepheline syenite, with a fineness of 325 mesh and a water-soluble salt content of <1%. The chemical composition of the nepheline powder is composed of the following components by weight percentage: LOI 5.07%, SiO243.33%, Al2O3 28.50%, Fe2O3 0.36%, CaO 4.96%, MgO 0.03%, K2O 4.58%, and Na2O13.17%.

[0009] Preferably, the high-purity and high-white quartz powder is quartz powder with a SiO2 content of >95%, a Fe2O3 content of <0.1%, and a whiteness of >85°. The chemical composition of the high-purity and high-white quartz powder is composed of the following components by weight: SiO2 98.23%, Fe2O3 0.05%, Al2O3 1.5%, K2O 0.1%, and Na2O 0.12%; the whiteness is: 92°.

[0010] Preferably, the method for preparing high-purity and high-white quartz powder comprises the following steps:

[0011] ⑴ The quartz sand is graded and screened, and iron is removed through screening to remove the metal, wood and clay mixed therein. The quartz sand with a particle size of 5 to 20 mm is selected;

[0012] (2) The quartz sand obtained by screening is pickled: the solution used for pickling is hydrochloric acid HCl and oxalic acid H2C2O4, which are mixed and diluted in a ratio of 1:1, with a concentration of 15%. The quartz sand is placed in the mixed solution and soaked for 3 to 4 days. During the soaking process, an electric stirrer is used to stir the quartz sand to ensure that the quartz sand is fully in contact with the acid solution to remove the iron on the surface of the quartz sand;

[0013] ⑶ Filtering;

[0014] (4) Whitening the quartz sand: soak the pickled quartz sand in tap water containing a fluorescent whitening agent for 15 to 20 minutes. The fluorescent whitening agent is a water-based fluorescent whitening agent RQT-C-3, and the addition ratio is 1 / 10,000 to 5 / 10,000.

[0015] 5. Use tap water to wash and filter repeatedly;

[0016] (6) Dry and pre-calculate the high-purity and high-white quartz sand obtained by filtration at a temperature of 850-980°C for 3 hours;

[0017] (7) Grinding: Grind the pre-burned high-purity and high-white quartz sand using a Raymond mill until the particle size distribution is D10 = 1.31 μm, D25 = 1.56 μm, D50 = 2.94 μm, D75 = 2.44 μm, and D90 = 3.25 μm.

[0018] Another technical solution of the present invention is a method for preparing the zirconium-free and titanium-free quartz ceramic tile bottom glaze, which is special in that it includes the following steps:

[0019] ⑴ Weigh the materials according to the formula and put them into the ball mill, then add 40% water and grind them to a fineness of 0.5-0.7% on a 325 mesh sieve;

[0020] (2) Adjust the glaze slurry to a specific gravity of 1.80-1.84;

[0021] ⑶ The performance of the obtained zirconium-free and titanium-free quartz ceramic tile base glaze was tested: its expansion coefficient at 400°C was 7.33×10 -06 / ℃, the melting temperature is 1105℃, and the expansion coefficient at the melting temperature is 8.73×10 -06 / ℃, close to the conventional green body expansion coefficient;

[0022] (4) Conduct a single trial firing experiment on the zirconium-free and titanium-free quartz ceramic tile base glaze: take the zirconium-free and titanium-free quartz ceramic tile base glaze and pour it on the ceramic body with a glaze thickness of 0.7 to 1.0 mm. Firing is carried out under a firing temperature of 1070 to 1180 ° C and a firing time of 40 to 60 min. The product glaze has a whiteness and glossiness of 4 to 7° and a whiteness of 66 to 72°, which meets the use requirements of the base glaze.

[0023] Another technical solution of the present invention is a method for preparing ceramic tiles using zirconium-free and titanium-free quartz-based ceramic tile bottom glaze, which is special in that it includes the following steps:

[0024] ⑴ green body pressing;

[0025] ⑵ Drying, drying temperature: 180~210℃;

[0026] ⑶ Apply zirconium-free and titanium-free quartz ceramic tile base glaze with a glaze thickness of 0.7 to 1.0 mm;

[0027] (4) Inkjet printing decoration;

[0028] ⑸ Pour transparent glaze. The transparent glaze can be matte glaze, glossy glaze, full-polished glaze, protective glaze or anti-slip glaze according to the requirements of product development on gloss and texture;

[0029] (6) High temperature firing: firing temperature is 1070-1180℃, firing time is 40-60min. In order to ensure that the high-purity and high-white quartz powder is completely melted at high temperature and achieve a good emulsification effect, 8 high temperature zones are set at 1165-1180℃.

[0030] As an advantage: the step (3) further comprises:

[0031] (3.1) Weigh the materials according to the formula and place them into a ball mill. Add 40% water and ball grind until the slurry is 0.5-0.7% after 325 mesh sieve.

[0032] (3.2) Adjust the glaze slurry to a specific gravity of 1.80-1.84;

[0033] (3.3) The performance of the obtained zirconium-free and titanium-free quartz ceramic tile base glaze was tested: its expansion coefficient at 400°C was measured to be 7.33×10 -06 / ℃, the melting temperature is 1105℃, and the expansion coefficient at the melting temperature is 8.73×10 -06 / ℃, close to the conventional green body expansion coefficient;

[0034] (3.4) Single trial firing experiment was conducted on the zirconium-free and titanium-free quartz ceramic tile base glaze: the zirconium-free and titanium-free quartz ceramic tile base glaze was poured on the ceramic body with a glaze thickness of 0.7 to 1.0 mm. The base glaze was fired at a firing temperature of 1070 to 1180 ° C and a firing time of 40 to 60 min. The product glaze had a whiteness and glossiness of 4 to 7° and a whiteness of 66 to 72°, which met the requirements for the base glaze.

[0035] The fourth technical solution of the present invention is a method for preparing high-purity and high-white quartz powder in the zirconium-free and titanium-free quartz ceramic tile bottom glaze, which is special in that it includes the following steps:

[0036] ⑴ The quartz sand is graded and screened, and iron is removed through screening to remove the metal, wood and clay mixed therein. The quartz sand with a particle size of 5 to 20 mm is selected;

[0037] (2) The quartz sand obtained by screening is pickled: the solution used for pickling is hydrochloric acid HCl and oxalic acid H2C2O4, which are mixed and diluted in a ratio of 1:1, with a concentration of 15%. The quartz sand is placed in the mixed solution and soaked for 3 to 4 days. During the soaking process, an electric stirrer is used to stir the quartz sand to ensure that the quartz sand is fully in contact with the acid solution to remove the iron on the surface of the quartz sand;

[0038] ⑶ Filtering;

[0039] (4) Whitening the quartz sand: soak the pickled quartz sand in tap water containing a fluorescent whitening agent for 15 to 20 minutes to allow the whitening agent to adhere to the surface of the quartz sand and achieve the purpose of whitening the quartz sand. The fluorescent whitening agent is a water-based fluorescent whitening agent RQT-C-3, and the addition ratio is 1 / 10,000 to 5 / 10,000.

[0040] 5. Use tap water to wash and filter repeatedly;

[0041] (6) Dry and pre-calculate the high-purity and high-white quartz sand obtained by filtration at a temperature of 850-980°C for 3 hours. Pre-calculation reduces free quartz and obtains a more stable crystal phase.

[0042] (7) Grinding: Grind the pre-burned high-purity and high-white quartz sand using a Raymond mill until the particle size distribution is D10 = 1.31 μm, D25 = 1.56 μm, D50 = 2.94 μm, D75 = 2.44 μm, and D90 = 3.25 μm.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] (1) The high-white zirconium-free and titanium-free quartz ceramic tile base glaze of the present invention has a cost of 2,200 yuan / ton, which saves 500 yuan / ton compared with the conventional zirconium silicate base glaze cost of 2,700 yuan / ton. It has low cost, can adapt to firing at a temperature of 1,070 to 1,180°C, has a wide firing range, is easy to control, has uniform color, and has more stable quality. After firing, the whiteness can reach 66 to 72°, and the glossiness is 4 to 7°, which meets the use requirements of the base glaze.

[0045] (2) The base glaze formula of the present invention does not contain zirconium, is non-radioactive, does not rely on imported raw materials, and has relatively low cost, which solves the problem of high cost and high radioactivity caused by whitening with zirconium silicate. The base glaze formula of the present invention also does not contain titanium, which solves the problem of narrow firing range, instability, and easy discoloration of the opacified base glaze of titanium-based glazes.

[0046] ⑶ The present invention applies low-cost, high-purity, and high-whiteness ultrafine quartz powder to ceramic base glaze. The ultrafine quartz powder has a microparticle form, so that the ultrafine quartz powder can act as an emulsifier in the glaze, so that the glaze forms an emulsifying effect, and the base glaze is zirconium-free and titanium-free, whitened, and has a stable structure and a wide firing range. It is beneficial to saving high-quality ceramic raw material resources and promoting technology and development in the ceramic industry.

[0047] ⑷ The high-purity and high-white quartz powder used in the present invention is pre-fired before grinding to reduce the presence of free quartz. During the subsequent firing preparation process of the product, the nepheline in the formula can melt the quartz, increase the viscosity of the melt, generate a relatively stable emulsified crystal phase, and achieve a good emulsification effect. DETAILED DESCRIPTION

[0048] The present invention will be further described in detail below with reference to the embodiments:

[0049] Example 1:

[0050] The zirconium-free and titanium-free quartz ceramic tile base glaze is composed of the following components by weight: 5 parts of talc, 6.5 parts of wollastonite, 20 parts of potassium feldspar, 2 parts of calcined kaolin, 8 parts of kaolin, 36 parts of nepheline powder, and 18 parts of high-purity and high-white quartz powder; the corresponding chemical composition is composed of the following components by weight percentage: LOI 2.17%, SiO2 64.21%, Al2O3 19.24%, Fe2O30.13%, CaO 4.75%, MgO 2.35%, K2O 2.11%, and Na2O 5.04%.

[0051] The nepheline powder is a powdery object ground from nepheline syenite, with a fineness of 325 mesh and a water-soluble salt content of <1% in order not to cause thixotropy of the glaze slurry;

[0052] The chemical composition of the nepheline powder consists of the following components by weight percentage: IL 5.07%, SiO243.33%, Al2O3 28.50%, Fe2O3 0.36%, CaO 4.96%, MgO 0.03%, K2O 4.58%, and Na2O 13.17%;

[0053] The addition of nepheline powder to the formula is to adjust the expansion coefficient of the base glaze, strengthen the bonding between the body and glaze, and ensure that the brick shape is within a controllable range. Secondly, at high temperatures, nepheline can melt quartz, increase the viscosity of the melt, and form a more stable milky crystal phase.

[0054] The high-purity and high-white quartz powder is quartz powder with a SiO2 content of more than 95%, a Fe2O3 content of less than 0.1%, and a whiteness of more than 85°. The chemical composition of the high-purity and high-white quartz powder is composed of the following components by weight: SiO2 98.23%, Fe2O3 0.05%, Al2O3 1.5%, K2O 0.1%, and Na2O 0.12%; the whiteness is: 92°.

[0055] The method for preparing high-purity and high-white quartz powder comprises the following steps:

[0056] ⑴ The quartz sand is graded and screened, and iron is removed through screening to remove the metal, wood and clay mixed therein. The quartz sand with a particle size of 5 to 20 mm is selected;

[0057] (2) The quartz sand obtained by screening is subjected to pickling treatment: the solution used for pickling is hydrochloric acid HCl and oxalic acid H2C2O4, which are mixed and diluted in a ratio of 1:1, with a concentration of 15%. The quartz sand is placed in the mixed solution and soaked for 3 days. During the soaking process, an electric stirrer is used to stir the quartz sand to ensure that the quartz sand is fully in contact with the acid solution to remove the iron on the surface of the quartz sand;

[0058] ⑶ Filtering;

[0059] (4) Whitening the quartz sand: soak the acid-washed quartz sand in tap water containing a fluorescent whitening agent for 20 minutes to allow the whitening agent to adhere to the surface of the quartz sand, thereby achieving the purpose of whitening the quartz sand. The fluorescent whitening agent is a water-based fluorescent whitening agent RQT-C-3, and the addition ratio is 0.02%;

[0060] 5. Use tap water to wash and filter repeatedly;

[0061] (6) Dry and pre-calculate the high-purity and high-white quartz sand obtained by filtration at a temperature of 880±10°C for 3 hours. Pre-calculation reduces free quartz and obtains a more stable crystal phase.

[0062] (7) Grinding: Grind the pre-burned high-purity and high-white quartz sand using a Raymond mill until the particle size distribution is D10 = 1.31 μm, D25 = 1.56 μm, D50 = 2.94 μm, D75 = 2.44 μm, and D90 = 3.25 μm.

[0063] The preparation method of zirconium-free and titanium-free quartz ceramic tile bottom glaze comprises the following steps:

[0064] ⑴ Weigh the materials according to the formula and place them into the ball mill, then add 40% water and grind them to a fineness of 0.58% ± 0.02% on a 325 mesh sieve;

[0065] (2) Adjust the glaze slurry to a specific gravity of 1.82±0.02;

[0066] ⑶ The performance of the obtained zirconium-free and titanium-free quartz ceramic tile base glaze was tested: its expansion coefficient at 400°C was 7.33×10 -06 / ℃, the melting temperature is 1105℃, and the expansion coefficient at the melting temperature is 8.73×10 -06 / ℃, close to the conventional green body expansion coefficient;

[0067] (4) Conduct a single trial firing experiment on the zirconium-free and titanium-free quartz ceramic tile base glaze: take the zirconium-free and titanium-free quartz ceramic tile base glaze and pour it on the ceramic body. The glaze thickness is 0.8±0.05mm. It is fired at a firing temperature of 1165±10℃ and a firing time of 55min. The product glaze has a whiteness and glossiness of 5~6° and a whiteness of 68~69°, which meets the use requirements of the base glaze.

[0068] The method for preparing ceramic tiles using zirconium-free and titanium-free quartz-based ceramic tile base glaze comprises the following steps:

[0069] ⑴Body pressing;

[0070] ⑵ Drying, drying temperature: 200±5℃;

[0071] ⑶ Apply zirconium-free and titanium-free quartz ceramic tile base glaze with a glaze thickness of 0.8±0.05mm;

[0072] (4) Inkjet printing decoration;

[0073] ⑸ Apply transparent glaze. The transparent glaze can be matte glaze according to the requirements of gloss and texture of product development;

[0074] (6) High temperature firing: firing temperature is 1165±10℃, firing time is 55min. In order to ensure that the high-purity and high-white quartz powder is completely melted at high temperature and achieve a good emulsification effect, 8 high temperature zones of 1165~1175℃ are set.

[0075] The above descriptions are merely preferred embodiments of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. A zirconium-free and titanium-free quartz ceramic tile base glaze, characterized in that: The invention is composed of the following components in parts by weight: 5-8 parts of talc, 6-8 parts of wollastonite, 10-20 parts of potassium feldspar, 0-3 parts of calcined kaolin, 8-10 parts of kaolin, 35-40 parts of nepheline syenite, and 18-22 parts of high-purity high-white quartz powder; the corresponding chemical composition is composed of the following components in weight percentage: LOI 2.07-3.87%, SiO2 62.64-64.25%, Al2O3 18.47-19.34%, Fe2O3 0.10-0.32%, CaO 2.67-4.75%, MgO 2.05-2.38%, K2O 2.07-2.15%, and Na2O 5.02-7.17%.

2. The zirconium-free and titanium-free quartz ceramic tile base glaze according to claim 1, characterized in that: The ceramic tile base glaze is further composed of the following components by weight: 5 parts of talc, 6.5 parts of wollastonite, 20 parts of potassium feldspar, 2 parts of calcined kaolin, 8 parts of kaolin, 36 parts of nepheline powder, and 18 parts of high-purity high-white quartz powder; the corresponding chemical composition is composed of the following components by weight percentage: LOI 2.17%, SiO2 64.21%, Al2O3 19.24%, Fe2O3 0.13%, CaO 4.75%, MgO 2.35%, K2O 2.11%, and Na2O 5.04%.

3. The zirconium-free and titanium-free quartz ceramic tile bottom glaze according to claim 2, characterized in that: The nepheline powder is a powdery object ground from nepheline syenite, with a fineness of 325 mesh and a water-soluble salt content of <1%. The chemical composition of the nepheline powder is composed of the following components by weight percentage: LOI 5.07%, SiO2 43.33%, Al2O3 28.50%, Fe2O3 0.36%, CaO4.96%, MgO 0.03%, K2O 4.58%, and Na2O 13.17%.

4. The zirconium-free and titanium-free quartz ceramic tile bottom glaze according to claim 1 or 2, characterized in that: The high-purity and high-white quartz powder is quartz powder with a SiO2 content of >95%, a Fe2O3 content of <0.1%, and a whiteness of >85°. The chemical composition of the high-purity and high-white quartz powder is composed of the following components by weight percentage: SiO2 98.23%, Fe2O3 0.05%, Al2O3 1.5%, K2O 0.1%, and Na2O 0.12%; the whiteness is: 92°.

5. A method for preparing the zirconium-free and titanium-free quartz ceramic tile bottom glaze according to claim 1, characterized in that: The following steps are involved: ⑴ Weigh the materials according to the formula and put them into the ball mill, then add 40% water and ball grind until the fineness is 0.5-0.7% after 325 mesh sieve; (2) Adjust the glaze slurry to a specific gravity of 1.80-1.84; ⑶ The performance of the obtained zirconium-free and titanium-free quartz ceramic tile base glaze was tested: its expansion coefficient at 400°C was 7.33×10 -06 / ℃, the melting temperature is 1105℃, and the expansion coefficient at the melting temperature is 8.73×10 -06 / ℃; (4) Conduct a single trial firing experiment on the zirconium-free and titanium-free quartz ceramic tile base glaze: take the zirconium-free and titanium-free quartz ceramic tile base glaze and pour it on the ceramic body with a glaze thickness of 0.7 to 1.0 mm. Firing is carried out under a firing temperature of 1070 to 1180 ° C and a firing time of 40 to 60 min. The product glaze has a gloss of 4 to 7° and a whiteness of 66 to 72°, which meets the use requirements of the base glaze.

6. A method for preparing ceramic tiles using the zirconium-free and titanium-free quartz-based ceramic tile base glaze according to claim 1, characterized in that: The following steps are involved: ⑴ green body pressing; ⑵ Drying, drying temperature: 180~210℃; ⑶ Apply zirconium-free and titanium-free quartz ceramic tile base glaze with a glaze thickness of 0.7 to 1.0 mm; (4) Inkjet printing decoration; ⑸ Pour transparent glaze. The transparent glaze can be matte glaze, glossy glaze, full-polished glaze, protective glaze or anti-slip glaze according to the requirements of gloss and texture of product development; (6) High temperature firing: firing temperature is 1070-1180℃, firing time is 40-60min. In order to ensure that the high-purity and high-white quartz powder is completely melted at high temperature and achieve a good emulsification effect, 8 high temperature zones are set at 1165-1180℃.

7. The method for preparing ceramic tiles using zirconium-free and titanium-free quartz-based ceramic tile bottom glaze according to claim 6, characterized in that: The step (3) further comprises: (3.1) Weigh the materials according to the formula and place them into a ball mill. Add 40% water and ball mill until the fineness is 0.5-0.7% of the residue on a 325 mesh sieve; (3.2) Adjust the glaze slurry to a specific gravity of 1.80-1.84; (3.3) The performance of the obtained zirconium-free and titanium-free quartz ceramic tile base glaze was tested: its expansion coefficient at 400°C was measured to be 7.33×10 -06 / ℃, the melting temperature is 1105℃, and the expansion coefficient at the melting temperature is 8.73×10 -06 / ℃; (3.4) Single trial firing experiment on zirconium-free and titanium-free quartz ceramic tile base glaze: Take zirconium-free and titanium-free quartz ceramic tile base glaze and pour it on the ceramic body with a glaze thickness of 0.7 to 1.0 mm. Firing is carried out under a firing system of a firing temperature of 1070 to 1180 ° C and a firing time of 40 to 60 minutes. The product glaze has a gloss of 4 to 7° and a whiteness of 66 to 72°, which meets the use requirements of the base glaze.