阅读说明：本技术 冰裂纹晶核剂干粒、冰裂纹晶花透光陶瓷砖及其制备方法 (Dry ice crack nucleating agent particles, ice crack crystal flower light-transmitting ceramic tile and preparation method thereof ) 是由 潘利敏 汪陇军 杨元东 王贤超 程科木 于 2019-11-27 设计创作，主要内容包括：本发明公开冰裂纹晶核剂干粒、冰裂纹晶花透光陶瓷砖及其制备方法。所述冰裂纹晶核剂干粒包括膨胀系数为230～240×10<Sup>-7</Sup>/℃的大膨胀晶核剂干粒和膨胀系数为165～175×10<Sup>-7</Sup>/℃的小膨胀晶核剂干粒。(The invention discloses ice crack crystal nucleus agent dry particles, an ice crack crystal pattern light-transmitting ceramic tile and a preparation method thereof. The dry ice crack nucleating agent particles comprise expansion coefficients of 230-240 multiplied by 10 ‑7 The dry particles of the large expansion crystal nucleus agent with the temperature of/° C and the expansion coefficient of 165-175 x 10 ‑7 Dry granules of small swelling nucleating agent at/° c.)

1. The ice crack crystal nucleus agent dry particles are characterized by comprising 230-240 multiplied by 10 expansion coefficients^-7The dry particles of the large expansion crystal nucleus agent with the temperature of/° C and the expansion coefficient of 165-175 x 10^-7Dry granules of small swelling nucleating agent at/° c.

2. The ice crack crystal nucleus agent dry particle as claimed in claim 1, wherein the mass ratio of the large expansion crystal nucleus agent dry particle to the small expansion crystal nucleus agent dry particle is (55-75): (25-45).

3. The ice crack crystal nucleus agent dry particle as claimed in claim 1 or 2, wherein the expansion coefficient of the large expansion crystal nucleus agent dry particle is 55-75 x 10 higher than that of the small expansion crystal nucleus agent dry particle^-7/℃。

4. The ice crack crystal nucleus agent dry particle as claimed in any one of claims 1 to 3, wherein the raw material composition of the large expansion crystal nucleus agent dry particle comprises: by mass percent, potassium feldspar: 10-20%, albite: 6-18% of quartz: 7-11%, alumina: 5-9% of calcite: 8-12% of dolomite: 18-22% and barium carbonate: 7-9%, zinc oxide 0-2%, cryolite 2-4%, boric acid 2-4%, and aluminum phosphate: 1.0-2.0%, zircon powder: 8-10%, tungsten oxide: 1.0 to 2.0 percent.

5. The ice crack crystal nucleus agent dry particle as claimed in any one of claims 1 to 4, wherein the raw material composition of the small expansion crystal nucleus agent dry particle comprises: by mass percent, potassium feldspar: 15-25%, albite: 5-15% of quartz: 10-14%, alumina: 0.5-1.5%, 14-18% of calcite, 8-12% of zinc oxide, fluorite: 1-3% of boric acid: 1-3%, calcium phosphate: 1-2% and rutile: 15-17% of zircon powder: 7-9%, tungsten oxide: 1 to 2 percent.

6. The dry ice crack nucleating agent particle as claimed in any one of claims 1 to 5, wherein the grain size distribution of the dry ice crack nucleating agent particle is as follows: 30-60 meshes: 20-30%, 60-80 mesh: 25-35%, 80-100 mesh: 25-35%, 100-120 mesh: 10 to 20 percent.

7. The dry ice crack nucleating agent particles as claimed in any one of claims 1 to 6, wherein the particle size of the dry large-expansion nucleating agent particles is 30 to 100 mesh, and the particle size of the dry small-expansion nucleating agent particles is 60 to 120 mesh.

8. The colored ice-cracked crystal-patterned light-transmitting ceramic tile is characterized by comprising an ice-cracked layer formed by the dry particles of the ice-crack crystal nucleating agent as claimed in any one of claims 1 to 7.

9. The method for preparing the colorful ice crack crystal pattern light-transmitting ceramic tile as claimed in claim 8, comprising the following steps:

(1) pressing the light-transmitting powder into a light-transmitting ceramic blank;

(2) printing a pattern on the transparent ceramic blank by ink jet;

(3) applying the ice crack nucleating agent dry particles of any one of claims 1 to 7;

(4) applying crystal flower dry grain glaze, and fixing the dry grains;

(5) and (4) sintering and polishing the blank obtained in the step (4).

10. The method for preparing the colorful ice crack crystal-patterned light-transmitting ceramic tile according to claim 9, wherein the raw material composition of the crystal-patterned dry grain glaze comprises: by mass percent, potassium feldspar: 6-10% of albite: 47-51% of quartz: 3.5-5.5%, alumina: 2.5-4.5% of dolomite: 18.0-22.0%, barium carbonate: 2-6%, zinc oxide 4-6%, fluorite 3-5%, and calcium phosphate: 1.0 to 1.5 percent.

Technical Field

The invention relates to a colorful ice crack crystal flower light-transmitting ceramic tile and a preparation method thereof, belonging to the technical field of ceramic tile production and manufacturing.

Background

The ice crack is also called as cracking, which is an ancient Chinese ceramic firing process, originally belongs to a variety of Longquan celadon, and is called as three-dimensional due to cracking of the grains like ice and lamination of cracking. The criss-cross lines are firstly applied to the traditional art and can make the porcelain in China in the world sound. Among them, the crackle in the Ge ware is an excellent example. The so-called 'cracking', i.e. ice cracks, is a defect that cracks appear on the glaze surface due to the fact that the expansion coefficient of the base glaze is different, but the cracks are skillfully used as decorative lines by a porcelain maker, and the effect is exquisite and perfect, and the glaze has the feeling of being naturally formed and skillfully capturing the craft. The transparent crystal is characterized in that the inside of the transparent crystal is visually cracked and floriated, and sometimes has a color-changing effect; the natural crystal is not cracked by ice in the crystallization process.

Chinese patent CN102936156B discloses a glaze material of a high-temperature fast-fired crystal glaze archaized brick and a preparation process thereof. The process adopts the steps of spraying the crystallized colored base glaze, then printing the crystallizing agent frit dry particles through a screen, and then adopting screen printing to quickly fire the transparent or colored dry particles in a roller kiln to obtain the antique brick with the crystal pattern effect in different colors.

Disclosure of Invention

Aiming at the problems, the invention provides an ice crack nucleating agent dry particle, a colored ice crack crystal flower light-transmitting ceramic tile and a preparation method thereof.

On one hand, the invention provides dry ice crack nucleating agent particles, which comprise expansion coefficients of 230-240 multiplied by 10^-7The dry particles of the large expansion crystal nucleus agent with the temperature of/° C and the expansion coefficient of 165-175 x 10^-7Dry granules of small swelling nucleating agent at/° c.

Preferably, the mass ratio of the large expansion crystal nucleus agent dry particles to the small expansion crystal nucleus agent dry particles is (55-75): (25-45).

Preferably, the expansion coefficient of the large expansion crystal nucleus agent dry particles is 55-75 x 10 higher than that of the small expansion crystal nucleus agent dry particles^-7/℃。

Preferably, the raw material composition of the large expansion crystal nucleus agent dry particles comprises: potassium feldspar: 10-20%, albite: 6-18% of quartz: 7-11%, alumina: 5-9% of calcite: 8-12% of dolomite: 18-22% and barium carbonate: 7-9%, zinc oxide 0-2%, cryolite 2-4%, boric acid 2-4%, and aluminum phosphate: 1.0-2.0%, zircon powder: 8-10%, tungsten oxide: 1.0 to 2.0 percent.

Preferably, the chemical composition of the large expansion crystal nucleus agent dry particles comprises: SiO 2₂：35.5～39.5％、Al₂O₃：12.0～18.0％、Fe₂O₃：0～0.2％、TiO₂：0～0.2％、CaO：13.0～15.0％、MgO：4.5～6.0％、K₂O：1.0～2.5％、Na₂O：2.0～4.0％、BaO：6.0～8.5％、ZnO：0～2.5％、P₂O₅：0.5～1.5％、B₂O₃：1.0～3.0％、F：1.0～3.0％、ZrO₂：6.0～8.0％、WO₃: 1.0-2.5%, loss on ignition: 1.0 to 2.0 percent.

Preferably, the raw material composition of the small expansion crystal nucleus agent dry particles comprises: by mass percent, potassium feldspar: 15-25%, albite: 5-15% of quartz: 10-14%, alumina: 0.5-1.5%, 14-18% of calcite, 8-12% of zinc oxide, fluorite: 1-3% of boric acid: 1-3%, calcium phosphate: 1-2% and rutile: 15-17% of zircon powder: 7-9%, tungsten oxide: 1 to 2 percent.

Preferably, the chemical composition of the small expansion crystal nucleus agent dry particles comprises: by mass percent, SiO₂：37～40.5％、Al₂O₃：5.5～7.0％、Fe₂O₃：0～0.2％、TiO₂：16.0～18.0％、CaO：10.0～12.5％、MgO：0.1～0.5％、K₂O：1.0～2.5％、Na₂O：1.0～2.5％、ZnO：8.0～13.0％、F：0.5～1.5％、ZrO₂：4.5～6.5％、P₂O₅：0.5～1.0％、B₂O₃：0.5～2.0％、WO₃: 1.0-2.5%, loss on ignition: 1.0 to 2.0 percent.

Preferably, the grain composition of the dry ice crack nucleating agent particles is as follows: 30-60 meshes: 20-30%, 60-80 mesh: 25-35%, 80-100 mesh: 25-35%, 100-120 mesh: 10 to 20 percent.

Preferably, the particle size of the large expansion crystal nucleus agent dry particles is 30-100 meshes.

Preferably, the particle size of the small expansion crystal nucleus agent dry particles is 60-120 meshes.

In another aspect, the invention provides a colored ice crack crystal pattern light-transmitting ceramic tile, which comprises an ice crack layer formed by the dry grains of the ice crack crystal nucleus agent.

Preferably, the thickness of the ice crack layer is 0.15-0.25 mm.

In another aspect, the invention provides a method for preparing a colorful ice crack crystal pattern light-transmitting ceramic tile, which comprises the following steps:

(1) pressing the light-transmitting powder into a light-transmitting ceramic blank;

(2) printing a pattern on the transparent ceramic blank by ink jet;

(3) applying the dry ice crack crystal nucleus agent particles of any one of the above parts;

(4) applying crystal flower dry grain glaze, and fixing the dry grains;

(5) and (4) sintering and polishing the blank obtained in the step (4).

Preferably, the amount of the dry ice crack nucleating agent particles is 300-500 g/m²。

Preferably, the raw material composition of the crystal flower dry grain glaze comprises: by mass percent, potassium feldspar: 6-10% of albite: 47-51% of quartz: 3.5-5.5%, alumina: 2.5-4.5% of dolomite: 18.0-22.0%, barium carbonate: 2-6%, zinc oxide 4-6%, fluorite 3-5%, and calcium phosphate: 1.0 to 1.5 percent.

Preferably, the chemical composition of the crystal flower dry grain glaze comprises: by mass percent, SiO₂：49.5～53.5％、Al₂O₃：13.0～15.5％、Fe₂O₃：0～0.2％、TiO₂：0～0.1％、CaO：8.5～12％、MgO：4.0～6.0％、K₂O：0.5～2.0％、Na₂O：4.5～5.5％、ZnO：4.0～6.5％、BaO：2.5～5.5％、F：0.5～2.5％、P₂O₅: 0.5-1.0%, loss on ignition: 1.0 to 2.0 percent.

Preferably, the grain composition of the crystal flower dry grain glaze is as follows: 30-60 meshes: 20-30%, 60-80 mesh: 55-65%, 80-100 mesh: 10 to 15 percent.

Preferably, the amount of the material for distributing the crystal flower dry grain glaze is 400-600 g/m²。

Preferably, the maximum firing temperature is 1190-1210 ℃, and the firing period is 100-150 min.

According to the invention, the transparent ceramic blank body, the ice crack crystal nucleus agent dry grains and the crystal flower dry grain glaze are combined, after the blank body is irradiated by strong light, the glaze looks like transparent ice, like plum blossom pieces, and is laminated layer by layer, so that the glaze has strong stereoscopic impression, different colors are presented in the plum blossom pieces, and the special artistic effect of the crystal flower glaze can be fully displayed by the pattern after the light is irradiated, the application of the product is widened, and the grade of the product is improved.

Drawings

FIG. 1 is a flow chart of the preparation of a colorful ice-cracked crystal-patterned light-transmitting ceramic tile according to an embodiment of the present invention.

FIG. 2 is a graph showing the effect of the surface of the colored ice-cracked light-transmitting ceramic tile obtained in example 1.

FIG. 3 is a graph of the brick effect of the ceramic tile obtained in comparative example 1.

FIG. 4 is a plot of the brick effect of the ceramic tiles obtained in 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 green body may also be referred to herein as a brick, a adobe, a ceramic body. The dry particles of the ice crack nucleating agent may also be referred to as ice crack nucleating agent.

The invention provides ice crack crystal nucleus agent dry particles, which comprise large expansion crystal nucleus agent dry particles and small expansion crystal nucleus agent dry particles. According to the invention, the expansion coefficients of the large expansion crystal nucleus agent dry particles and the small expansion crystal nucleus agent dry particles are different in the sintering process, so that an ice crack effect with different shrinkage is formed on the contact interface of the large expansion crystal nucleus agent dry particles and the small expansion crystal nucleus agent dry particles. And the ceramic ink, the crystal flower dry grain glaze and two crystal nucleus agents with different expansion coefficients react to form an ice crack effect and show different colors at the same time, so that a color ice crack layer is formed.

The expansion coefficient of the large expansion crystal nucleus agent dry particles is 55-75 multiplied by 10 higher than that of the small expansion crystal nucleus agent dry particles^-7The temperature per DEG C is different due to the expansion coefficient, and the ice crack effect is generated on the contact surface of the crystal nucleus agent due to the different shrinkage in the sintering process. Preferably, the swelling coefficient of the large swelling crystal nucleus agent dry particles is 55 x 10 higher than that of the small swelling crystal nucleus agent dry particles^-7/℃。

In some embodiments, the expansion coefficient of the large expansion crystal nucleus agent dry particles is 230-240 multiplied by 10^-7at/DEG C, the expansion coefficient of the small expansion crystal nucleus agent dry particles is 165-175 multiplied by 10^-7/℃。

In some embodiments, the mass ratio of the large expansion crystal nucleus agent dry particles to the small expansion crystal nucleus agent dry particles is (55-75): (25-45). The expansion coefficient of the ice crack nucleating agent formed in the range is close to the expansion of the green body and the crystal flower dry grain glaze, so that the control of brick shape production is facilitated, and meanwhile, the cracking of the crystal flower dry grain glaze layer caused by too large difference of the expansion coefficients can be avoided.

In some embodiments, the grain size of the dry ice crack nucleating agent particles is: 30-60 meshes: 20-25%, 60-80 mesh: 25-35%, 80-100 mesh: 25-40%, 100-120 mesh: 10 to 20 percent. The ice crack crystal nucleus agent with particle grading has high dry particle bulk density, is convenient for fixing by a dry particle fixing agent, does not influence the effect of ice cracks, and has few pores after being thrown.

In some embodiments, the raw material composition of the large expansion crystal nucleus agent dry particles comprises: potassium feldspar: 10-20%, albite: 6-18% of quartz: 7-11%, alumina: 5-9% of calcite: 8-12% of dolomite: 18-22% and barium carbonate: 7-9%, zinc oxide 0-2%, cryolite 2-4%, boric acid 2-4%, and aluminum phosphate: 1.0-2.0%, zircon powder: 8-10%, tungsten oxide: 1.0 to 2.0 percent. The introduced cryolite, barium carbonate and calcium oxide components can greatly increase the expansion coefficient of the dry particles of the small expansion crystal nucleus agent, so that the ice crack effect is formed after the ice crack is mixed with the dry particles of the small expansion crystal nucleus agent. The cryolite, the aluminum phosphate and the zircon powder are introduced as composite crystal nucleating agents, are easy to phase separate crystals from a silicate melt, are mixed with dry particles of the small-expansion crystal nucleating agents and then react with the ceramic ink and the dry-particle glaze of the crystal flowers together to form a colorful fine crystal flower pattern layer. Therefore, the large expansion crystal nucleus agent dry particles and the small expansion crystal nucleus agent dry particles are mixed to be used as ice crack crystal nucleus agents to react with the ceramic ink and the crystal flower dry particle glaze at high temperature, and the ice crack effect in the glaze layer is formed and the fine crystal flower effect is separated out. Cryolite, aluminum phosphate and tungsten oxide are used as indispensable crystal nucleants in dry granules of the large expansion crystal nucleant. The large expansion crystal nucleus agent does not contain cryolite, aluminum phosphate and tungsten oxide, precipitated crystal flowers cannot be formed, and meanwhile, ice crack effect cannot be formed even if the large expansion crystal nucleus agent does not contain the cryolite, so that ice crack crystal flowers cannot be formed even if the large expansion crystal nucleus agent is mixed with the small expansion crystal nucleus agent.

In some embodiments, the chemical composition of the large swelling nucleating agent dry particles comprises: SiO 2₂：35.5～39.5％、Al₂O₃：12.0～18.0％、Fe₂O₃：0～0.2％、TiO₂：0～0.2％、CaO：13.0～15.0％、MgO：4.5～6.0％、K₂O：1.0～2.5％、Na₂O：2.0～4.0％、BaO：6.0～8.5％、ZnO：0～2.5％、P₂O₅：0.5～1.5％、B₂O₃：1.0～3.0％、F：1.0～3.0％、ZrO₂：6.0～8.0％、WO₃: 1.0-2.5%, loss on ignition: 1.0 to 2.0 percent. CaO, BaO, F, Na in the chemical composition₂The expansion coefficient of the crystal nucleus agent dry particles can be increased, and the ice crack forming effect of the ice crack crystal nucleus agent is promoted.

In some embodiments, the particle size of the large expansion crystal nucleus agent dry particles is 30 to 100 meshes. Preferably, the grain composition of the large expansion crystal nucleus agent dry particles is 30-60 meshes: 40-50%, 60-80 mesh: 35-45%, 80-100 mesh: 10 to 20 percent. The grain grading facilitates the fixing of dry grains by the dry grain fixing agent, does not influence the effect of color ice cracks, and has few pores after being thrown.

In some embodiments, the raw material composition of the small expansion crystal nucleus agent dry particles comprises: by mass percent, potassium feldspar: 15-25%, albite: 5-15% of quartz: 10-14%, alumina: 0.5-1.5%, 14-18% of calcite, 8-12% of zinc oxide, fluorite: 1-3% of boric acid: 1-3%, calcium phosphate: 1-2% and rutile: 15-17% of zircon powder: 7-9%, tungsten oxide: 1 to 2 percent. The introduced CaO components such as fluorite, calcium phosphate, calcite and the like slightly increase the expansion coefficient of the small-expansion crystal nucleating agent, but the increase range is not large; the introduced rutile and zinc oxide can greatly reduce the expansion coefficient of the small expansion crystal nucleus agent, so that dry particles of the small expansion crystal nucleus agent are formed, and the dry particles of the small expansion crystal nucleus agent and the dry particles of the large expansion crystal nucleus agent are mixed to form an ice crack effect. The fluorite, calcium phosphate, zircon powder, tungsten oxide and rutile are introduced as composite crystal nucleus agents, are easy to phase-split from silicate melts, are mixed with dry grains of the large-expansion crystal nucleus agent and then react with ceramic ink and dry grain glaze of crystal flowers together to form a colorful fine crystal flower pattern layer. Therefore, the small expansion crystal nucleus agent dry particles and the large expansion crystal nucleus agent dry particles are mixed to be used as ice crack crystal nucleus agents to react with the ceramic ink and the crystal flower dry particle glaze at high temperature, and the ice crack effect in the glaze layer is formed and the fine crystal flower effect is separated out. Fluorite, calcium phosphate and tungsten oxide are used as indispensable crystal nucleating agents in the dry particles of the small expansion crystal nucleating agent. The crystal flower can not be separated out if the small expansion crystal nucleus agent is lack of fluorite, calcium phosphate and tungsten oxide, and the ice crack crystal flower can not be formed even if the small expansion crystal nucleus agent is mixed with the large expansion crystal nucleus agent.

In some embodiments, the chemical composition of the small swelling nucleating agent dry particles comprises: by mass percent, SiO₂：37～40.5％、Al₂O₃：5.5～7.0％、Fe₂O₃：0～0.2％、TiO₂：16.0～18.0％、CaO：10.0～12.5％、MgO：0.1～0.5％、K₂O：1.0～2.5％、Na₂O：1.0～2.5％、ZnO：8.0～13.0％、F：0.5～1.5％、ZrO₂：4.5～6.5％、P₂O₅：0.5～1.0％、B₂O₃：0.5～2.0％、WO₃: 1.0-2.5%, loss on ignition: 1.0 to 2.0 percent. The small expansion crystal nucleus agent dry particles with the chemical composition are prepared by introducing ZnO and TiO with smaller expansion coefficient₂The oxide not only can adjust the expansion coefficient of the small-expansion crystal nucleus agent to be in a small range, but also can be used as the most effective component of the crystal nucleus agent to promote crystallization phase separation and react with ceramic ink and crystal flower dry grain glaze to form a colorful ice crack pattern layer.

In some embodiments, the particle size of the small expansion crystal nucleus agent dry particles is 60-120 meshes. Preferably, the particle size distribution of the small expansion crystal nucleus agent dry particles is 60-80 meshes: 15-25%, 80-100 mesh: 45-55%, 100-120 mesh: 25 to 35 percent. The small expansion crystal nucleus agent dry particles with particle grading are convenient for the dry particle fixing agent to fix the dry particles, and the pores are few after the dry particles are thrown. Meanwhile, the particle-graded small expansion crystal nucleus agent dry particles and large expansion crystal nucleus agent dry particles are easy to mix uniformly, the contact area of the small expansion crystal nucleus agent dry particles with small particle size and the large expansion crystal nucleus agent dry particles with large particle size is large, and the effect of forming the colored ice cracks is optimal.

The ice crack nucleating agent dry particles can be obtained by conventionally mixing large expansion nucleating agent dry particles and small expansion nucleating agent dry particles.

The ice crack nucleating agent dry particles disclosed by the invention can be used for preparing colored ice crack crystal flower light-transmitting ceramic tiles. In one embodiment, the colored ice crack crystal flower light-transmitting ceramic tile sequentially comprises a light-transmitting ceramic body layer, an ink-jet pattern layer, an ice crack layer and a crystal flower dry grain glaze layer from bottom to top, wherein the ice crack layer is formed by the ice crack crystal nucleus agent dry grains disclosed by the invention.

The thickness of the ceramic body layer can be 6-12 mm. The pattern layer may be formed by inkjet printing. The thickness of the ice crack layer can be 0.15-0.25 mm. The thickness of the crystal flower dry grain glaze layer can be 0.3-0.5 mm.

The invention perfectly combines the production processes of light-transmitting green bodies, ink-jet printing, ice crack crystal flower dry grain glaze and the like. The ice cracks have the crystal pattern effect of underglaze cracks, and the glaze surface of the ceramic tile is not cracked. After the blank body is irradiated by strong light, the glaze looks like transparent ice, like plum blossom sheets, the plum blossom sheets are stacked layer by layer, the stereoscopic impression is strong, different colors are presented in the plum blossom sheets, the special artistic effect of the crystal fancy glaze can be fully displayed by the illuminated floral patterns, the application of the product is widened, the grade of the product is promoted, and the crystal fancy glaze can be applied to the field of home decoration as a decorative material.

FIG. 1 shows the process for preparing the light-transmitting ceramic tile of the present invention.

First, a light-transmitting powder is prepared.

In some embodiments, the raw material composition of the light-transmitting powder may include: and (2) grinding potassium feldspar with water according to mass percentage: 10-15%, albite: 25-35% of ultra-white potassium sand: 5-20% of pyrophyllite: 5-20% of calcined kaolin: 0-10%, ultra-white ball clay washing: 5-15% of ultra-white washing mud: 5-15% of talc mud: 1-3%, wollastonite: 0 to 1 percent.

The raw materials are weighed according to the proportion, the raw materials are put into a ball mill for ball milling to obtain the light-transmitting slurry, and the light-transmitting slurry is powdered (for example, powder is sprayed by a spray tower) to obtain the light-transmitting powder. The moisture range of the light-transmitting powder is controlled to be 7.5-8.5%, so that the press forming of a press is facilitated, and the light-transmitting performance of a blank body is not influenced.

The chemical composition of the light-transmitting powder material can comprise: by mass percent, SiO₂：63.0～68.0％、Al₂O₃：21.0～24.0％、Fe₂O₃：0.1～0.3％、TiO₂：0～0.2％、CaO：0.7～1.0％、MgO：0.5～1.0％、K₂O：2.0～3.5％、Na₂O: 3.0-4.0%, loss on ignition: 4.0 to 5.5 percent. The light-transmitting blank has high aluminum content and strong deformation resistance, the whiteness of the blank after burning is 70 to 75 degrees, and the higher the whiteness is, the better the light-transmitting performance is, so that the blank has higher transmittance.

In some embodiments, the particle composition of the light-transmitting powder is: 30 meshes below: less than or equal to 0.5 percent, 30-60 meshes: 55-65%, 60-80 mesh: 25-35%, more than 80 mesh: 6-12%. The sintered compact has high density and excellent light transmittance, and is favorable for press forming.

Then, the transparent powder is pressed into a transparent ceramic blank. The light-transmitting blank has high whiteness, and overglaze can be omitted. And the whiteness of the common blank is low, and the cover glaze is needed to cover the bottom color of the blank, so that the whiteness is improved, and the bright color development of the ink is promoted. The chemical composition of the overglaze is close to that of the blank body, and the zirconium silicate is added to cover the bottom color of the blank body, improve the whiteness of the blank body and promote the bright color development of the ink. In the invention, because the light-transmitting blank has high whiteness, the surface glaze is not applied, and the ink-jet printing pattern can be directly carried out on the light-transmitting blank after drying. The expansion coefficient of the ceramic blank can be 210-220 multiplied by 10^-7V. C. The expansion coefficient of the ceramic body is between the large expansion crystal nucleus agent and the small expansion crystal nucleus agent, the effect of colorful ice cracks can be better shown, and the cracking phenomenon of the glaze surface after crystal flower dry grain glaze is applied can be ensured while the brick shape of a product is ensured. In a preferred embodiment, the expansion coefficient of the ceramic blank can be slightly higher than that of the dry ice crack nucleating agent particles by 5-15 multiplied by 10^-7The difference has little influence on the ice crack effect, and the ice crack effect is generated mainly by the difference of expansion coefficients between the large expansion crystal nucleating agent and the small expansion crystal nucleating agent.

The green body may then be dried, for example in a drying kiln. The drying time can be 50-75 min, and the moisture of the dried blank is controlled within 0.5%.

And ink-jet printing a pattern on the ceramic blank. The ink can be printed by a digital ink-jet printer. The ceramic ink used may be blue, reddish brown, orange, golden yellow, lemon yellow, black, red, etc. The specific decorative pattern, texture and color effect are determined according to the design requirements.

Subsequently, the dry particles of the ice crack nucleating agent disclosed by the invention are applied on the surface of the blank after ink-jet printing. The glazing amount of the dry ice crack nucleating agent particles can be 250-350 g/m²The glazing amount does not affect the ice crack effect, and the polished pores have good effect. The ice crack nucleating agent dry particles can be applied by using a common dry particle machine.

And after the ice crack nucleating agent dry grains are distributed, the crystal flower dry grain glaze is distributed. Dried crystal flowerThe glazing amount of the granular glaze can be 400-600 g/m²The glazing amount does not influence the ice crack effect, the polished pore effect is good, and the glaze surface of the polished crystal flower dry particle layer does not crack.

The raw material composition of the crystal flower dry grain glaze can comprise: by mass percent, potassium feldspar: 6-10% of albite: 47-51% of quartz: 3.5-5.5%, alumina: 2.5-4.5% of dolomite: 18.0-22.0%, barium carbonate: 2-6%, zinc oxide 4-6%, fluorite 3-5%, and calcium phosphate: 1.0 to 1.5 percent.

The chemical composition of the crystal flower dry grain glaze can comprise: by mass percent, SiO₂：49.5～53.5％、Al₂O₃：13.0～15.5％、Fe₂O₃：0～0.2％、TiO₂：0～0.1％、CaO：8.5～12.0％、MgO：4.0～6.0％、K₂O：0.5～2.0％、Na₂O：4.5～5.5％、ZnO：4.0～6.5％、BaO：2.5～5.5％、F：0.5～2.5％、P₂O₅: 0.5-1.0%, loss on ignition: 1.0 to 2.0 percent.

The preparation method of the crystal flower dry grain glaze can be as follows: weighing the raw materials according to the proportion, putting the raw materials into a frit kiln to be melted into glass at the temperature of 1500-1550 ℃, quenching glass liquid to obtain crystal flower glaze frit, and processing the water-quenched frit into crystal flower dry granular glaze with the required particle size. The grain size of the crystallized dry grain glaze can be 30 meshes to 100 meshes, and more preferably, the grain composition of the crystallized dry grain glaze is as follows: 30-60 meshes: 20-30%, 60-80 mesh: 55-65%, 80-100 mesh: 10 to 15 percent. The grain grading facilitates the fixing of dry grains by the dry grain fixing agent, and does not influence the effect of crystal flower precipitation.

In some embodiments, the expansion coefficient of the crystal flower dry grain glaze is 200-210 x 10^-7V. C. Preferably, the expansion coefficient of the crystal flower dry grain glaze is close to that of the ice crack nucleating agent dry grains, for example, the difference between the two expansion coefficients is not more than 15 multiplied by 10^-7V. C. Therefore, the control of brick shape production can be facilitated, and cracking of the crystal flower dry grain glaze layer caused by too large difference of expansion coefficients can be avoided.

By applying the crystal flower dry grain glaze on the ice crack nucleating agent dry grains, a pattern layer with colorful ice crack effect under glaze or in glaze can be formed, and the glaze surface of the crystal flower dry grain layer has no ice crack effect. The crystal lattice dry grain glaze is diopside crystal glaze with introduced fluorite, calcium phosphate and other crystal nucleus agent, and the crystal nucleus agent components react with fluorite, calcium phosphate, zircon powder, tungsten oxide, rutile and other composite crystal nucleus agent components in the large expansion crystal nucleus agent dry grains and fluorite, calcium phosphate, zircon powder, tungsten oxide, rutile and other composite crystal nucleus agent components in the small expansion crystal nucleus agent dry grains at high temperature to form fine crystal lattice effect. The ice cracks are formed by large expansion crystal nucleus agent dry particles and small expansion crystal nucleus agent dry particles due to large difference of expansion coefficients and are not related to the crystal flower dry particle glaze.

And applying a fixing agent on the brick surface coated with the crystal flower dry grain glaze so as to fix the dry grains. The material of the fixing agent is not particularly limited, and may be a dry pellet fixing agent known in the art. In one embodiment, a glue fixative is used. The specific gravity of the dry particle fixing agent is 1.01-1.02, the specific gravity is low, the water jet cutting machine can spray the fixing agent conveniently, the atomization is good, and a glaze surface pit cannot be caused by too large impact force of sprayed liquid drops. The dry granules can be fixed by spraying a mist-like dry granule fixing agent with a high-pressure water jet machine. The application amount of the dry particle fixing agent can be 250-300 g/m²And spraying a small amount of fixing agent to completely fix the dry granules under the condition of ensuring that the moisture content of the green bricks is as low as possible. The pressure of the high-pressure water jet cutting machine can be controlled to be 9-14 Mpa.

The resulting ceramic body may then be dried, for example, using a glaze line kiln. The temperature of the drying kiln is controlled to be 150-250 ℃, and the moisture after drying is controlled to be within 1.0%.

Then, firing is carried out, for example, low-temperature quick firing in a roller kiln. The sintering period can be 100-150 min, and the maximum sintering temperature range can be 1190-1210 ℃. The color ice crack effect of the process can be quickly fired in a ceramic roller kiln without presintering in an oxidizing atmosphere and then firing in a reducing atmosphere. The color ice crack effect of the invention is that the shrinkage is inconsistent due to the inconsistent expansion coefficients of two dry particles with different expansion coefficients in the firing process, thereby forming the color ice crack effect at the contact interface of the two dry particles with the expansion coefficients.

After firing, polishing, edging, grading, packaging and warehousing can be carried out. The polishing manner may be a full polishing process.