CN113233905B - Preparation method of ceramic tile and ceramic tile - Google Patents

Preparation method of ceramic tile and ceramic tile Download PDF

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Publication number
CN113233905B
CN113233905B CN202110567512.6A CN202110567512A CN113233905B CN 113233905 B CN113233905 B CN 113233905B CN 202110567512 A CN202110567512 A CN 202110567512A CN 113233905 B CN113233905 B CN 113233905B
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ceramic tile
aluminum salt
ceramic
salt solution
printing
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CN113233905A (en
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邓兴智
沈荣伟
肖惠银
王永强
魏宇婷
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Chongqing Wonderful Ceramics Co ltd
Dongguan City Wonderful Ceramics Industrial Park Co Ltd
Jiangxi Hemei Ceramics Co Ltd
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Chongqing Wonderful Ceramics Co ltd
Dongguan City Wonderful Ceramics Industrial Park Co Ltd
Jiangxi Hemei Ceramics Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81Coating or impregnation
    • C04B41/89Coating or impregnation for obtaining at least two superposed coatings having different compositions

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Finishing Walls (AREA)

Abstract

The invention provides a preparation method of a ceramic tile and the ceramic tile, wherein the preparation method of the ceramic tile comprises the following steps: drying the ceramic tile green body, and spraying water on the surface of the dried ceramic tile green body; spraying a ground coat on the surface of the ceramic green brick body after water spraying to form a ground coat layer; printing a preset pattern on the ground glaze layer to form a pattern layer; spraying transparent glaze on the pattern layer to form a protective layer; and printing an aluminum salt solution and a brick bottom slurry on one side of the ceramic tile blank body, which is far away from the protective layer, and firing the ceramic tile in a kiln to obtain the ceramic tile. According to the invention, the aluminum salt solution is printed on the back surface of the ceramic tile blank, and the back stripe wattle of the ceramic tile absorbs aluminum salt, so that the content of alumina in the chemical components of the ceramic tile is increased, the water absorption rate after firing is increased, and the capability of absorbing cement mortar is enhanced, therefore, the adsorption force between the ceramic tile and the wall surface is increased when the ceramic tile is paved on the wall, and the ceramic tile is not easy to fall off; the tile glue is not needed, and the problem of infirm paving is solved.

Description

Preparation method of ceramic tile and ceramic tile
Technical Field
The invention relates to the technical field of ceramic tiles, in particular to a preparation method of a ceramic tile and the ceramic tile.
Background
The porcelain tiles and stoneware tiles of building ceramics are beginning to be used for wall decoration, in particular to the wall surface paving and pasting of porcelain and stoneware full-glazed ceramic tiles, which become the common mode of interior decoration. However, because the water absorption of ceramic tiles is less than 0.5%, the water absorption of stoneware tiles is 0.5-3.0%, the water absorption is low, and the bonding strength of cement to the stoneware tiles is not enough, the requirement on ceramic adhesives for paving and pasting is high when the stoneware tiles are installed on a wall.
The special tile glue is often used for paving in high-grade decoration, and the paving process is complicated. The low water absorption products paved by cement mortar and the like are easy to be infirm and even fall off. That is, the existing ceramic tiles are very troublesome to be paved and pasted by using tile glue due to low water absorption, and are infirm to be paved and pasted by using cement mortar.
Therefore, the prior art has defects and needs to be improved and developed.
Disclosure of Invention
The invention aims to solve the technical problems that the ceramic tile and the preparation method thereof are provided aiming at the defects of the prior art, and aims to solve the problems that the ceramic tile in the prior art is very troublesome to be paved and pasted by using ceramic tile glue and infirm to be paved and pasted by using cement mortar due to low water absorption.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a method for preparing a ceramic tile, comprising:
drying the ceramic tile green body, and spraying water on the surface of the dried ceramic tile green body;
spraying a ground coat on the surface of the ceramic green brick body after water spraying to form a ground coat layer;
printing a preset pattern on the ground glaze layer to form a pattern layer;
spraying transparent glaze on the pattern layer to form a protective layer;
and printing an aluminum salt solution and a brick bottom slurry on one side of the ceramic tile blank body, which is far away from the protective layer, and firing the ceramic tile in a kiln to obtain the ceramic tile.
In a further implementation manner, the drying treatment of the ceramic tile green body and the spraying of water to the surface of the ceramic tile green body after drying further comprise:
pressing and molding the ceramic raw material by a press to obtain a ceramic tile green body;
wherein, the back surface of the ceramic tile green body is provided with back-grain chaste trees.
In a further implementation manner, the printing a preset pattern on the ground glaze layer to form a pattern layer includes:
and printing a preset pattern on the ground coat layer by an ink-jet printing technology to form a pattern layer.
In a further implementation manner, the side of the ceramic tile blank body, which faces away from the protective layer, is printed with an aluminum salt solution and a tile bottom slurry, and the ceramic tile is obtained after the ceramic tile blank body enters a kiln to be fired, and the method comprises the following steps:
printing an aluminum salt solution on the back of the ceramic tile blank by a paste machine;
after the aluminum salt solution is printed, printing a brick bottom slurry on the back surface of the ceramic tile blank by a bottom slurry machine, and adsorbing aluminum salt by the back grain chaste tree twigs;
and putting the ceramic tile into a kiln to be fired to obtain the ceramic tile.
In further implementations, the aluminum salt solution includes, in parts by weight: 15 parts of aluminum salt, 84.8 parts of water and 0.2 part of sodium carboxymethyl cellulose.
In a further implementation manner, the side of the ceramic tile blank body, which faces away from the protective layer, is printed with an aluminum salt solution and a tile bottom slurry, and the ceramic tile is obtained after the ceramic tile blank body enters a kiln to be fired, and the method comprises the following steps:
preparing a mixture of an aluminum salt solution and brick bottom slurry in advance;
printing a mixture of an aluminum salt solution and a brick bottom slurry on the back surface of the ceramic tile blank by a bottom slurry machine, wherein the back grain chaste tree twig adsorbs aluminum salt;
and putting the ceramic tile into a kiln to be fired to obtain the ceramic tile.
In a further implementation, the mixture of the aluminum salt solution and the brick bottom slurry comprises, in parts by weight: 5 parts of aluminum salt solution and 95 parts of brick bottom slurry.
In further implementations, the aluminum salt solution is an aluminum nitrate solution, an aluminum chloride solution, a polyaluminum chloride solution, or an aluminum sulfate solution; the brick bottom slurry is magnesium oxide slurry.
In further implementations, the content of the aluminum salt in the aluminum salt solution is proportional to the water absorption of the ceramic tile.
The invention also provides a ceramic tile, wherein the ceramic tile is prepared by the preparation method of the ceramic tile.
The invention provides a preparation method of a ceramic tile and the ceramic tile, wherein the preparation method of the ceramic tile comprises the following steps: drying the ceramic tile green body, and spraying water on the surface of the dried ceramic tile green body; spraying a ground coat on the surface of the ceramic green body after water spraying to form a ground coat layer; printing a preset pattern on the ground glaze layer to form a pattern layer; spraying transparent glaze on the pattern layer to form a protective layer; and printing an aluminum salt solution and brick bottom slurry on one side of the ceramic tile blank body, which is far away from the protective layer, and firing the ceramic tile blank body in a kiln to obtain the ceramic tile. According to the invention, the aluminum salt solution is printed on the back surface of the ceramic tile blank, and the back stripe of the ceramic tile absorbs aluminum salt, so that the content of alumina in the chemical components of the ceramic tile is increased, the water absorption rate after firing is increased, and the capability of absorbing cement mortar is enhanced, therefore, the adsorption force between the ceramic tile and the wall surface is increased when the ceramic tile is paved on the wall, and the ceramic tile is not easy to fall off; the tile glue is not needed, and the problem of infirm paving is also solved.
Drawings
FIG. 1 is a flow chart of a preferred embodiment of the method of making ceramic tiles of the present invention.
FIG. 2 is a flow chart showing the first embodiment of step S500 in the preferred embodiment of the method for producing ceramic tiles of the present invention.
FIG. 3 is a flow chart showing the second embodiment of step S500 of the preferred embodiment of the method for producing ceramic tiles of the present invention.
FIG. 4 is a flow chart showing the details of the first embodiment of the preferred embodiment of the method of making ceramic tiles of the present invention.
FIG. 5 is a flow chart showing the second embodiment of the method of making ceramic tiles of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The ceramic tile with high water absorption rate can not be paved and pasted insecurely when being paved and pasted on the upper wall. The back grain of the ceramic tile can improve the adsorption force to a certain extent, but because the back grain is also porcelain or stoneware, the water absorption rate is low, the cement mortar is not firmly adhered, the ceramic tile is easy to fall off, a ceramic adhesive is required to be used, the requirement on the adhesive is high, and the paving process is complex.
The invention slightly adjusts the water absorption of the back grain of the ceramic tile, but the water absorption of the ceramic tile is not changed, so that the adsorption force of the back grain chaste is increased, and the adsorption force of the upper wall paving of the porcelain and stoneware tiles can be greatly improved. No matter the products such as antique bricks, full-polished glaze and polished tiles are porcelain or stoneware, the back surface of the tile is back-textured, and the semi-finished product can be sized by using a bottom sizing machine in the transmission process on a glaze line before entering a kiln, so that aluminum salt permeates back-textured chaste. When the brick is fired at high temperature, the alumina content in the back grain vitex negundo is higher than that of a green brick, and the water absorption rate of the back grain vitex negundo is slightly larger than that of the green brick, so that the function of enhancing adsorption force when the brick is paved on a wall is achieved.
Referring to FIG. 1, FIG. 1 is a flow chart of a method for making ceramic tiles according to the present invention. As shown in FIG. 1, the preparation method of the ceramic tile of the embodiment of the invention comprises the following steps:
and S100, drying the ceramic tile blank, and spraying water on the surface of the dried ceramic tile blank.
In one implementation, the step S100 further includes, before the step S: and pressing and molding the ceramic raw material by a press to obtain a ceramic tile green body. Wherein, the back surface of the ceramic tile green body is provided with back-grain chaste trees.
Specifically, after the ceramic tile is pressed and formed by a press, the green body is dried in a drying kiln to evaporate part of water due to the existence of certain water in the green body. When the ground coat is distributed on the surface of the ceramic, water is sprayed on the surface of the ceramic tile blank body in order to enable the ground coat to be better attached to the surface of the ceramic tile blank body.
The step S100 is followed by: and S200, spraying a ground coat on the surface of the ceramic green body after water spraying to form a ground coat layer.
Specifically, a layer of ground glaze is sprayed on the surface of the ceramic tile blank after water spraying, the surface of the ceramic tile blank is the front surface of the ceramic tile blank, and the layer of ground glaze is sprayed on the surface of the ceramic tile blank, so that the chemical stability of the ceramic tile blank can be improved, the color of the ceramic tile blank can be covered, and the ink-jet printing is more vivid.
The step S200 is followed by: and step S300, printing a preset pattern on the ground coat layer to form a pattern layer.
In an implementation manner, the step S300 specifically includes: and printing a preset pattern on the ground glaze layer by an ink-jet printing technology to form a pattern layer.
Specifically, patterns (namely preset patterns) designed by stone materials and the like are printed on the surface of the ceramic tile blank body after the ground glaze is sprayed through an ink-jet printing technology.
The step S300 is followed by: and S400, spraying transparent glaze on the pattern layer to form a protective layer.
In particular, the transparent glaze can form a protective layer on the surface of the pattern, so that various properties are given to the product.
The step S400 is followed by: and S500, printing an aluminum salt solution and a brick bottom slurry on the side, away from the protective layer, of the ceramic brick body, and firing the ceramic brick body in a kiln to obtain the ceramic brick.
In one implementation, the aluminum salt solution and the brick bottom slurry are printed step by step, and in particular, referring to fig. 2, the step S500 includes:
step S510a, printing an aluminum salt solution on the back of the ceramic tile blank through a paste machine;
step S520a, after the aluminum salt solution is printed, printing a brick bottom slurry on the back surface of the ceramic tile blank through a slurry machine, wherein the back stripe wattle adsorbs aluminum salt;
and step S530a, entering a kiln to fire to obtain the ceramic tile.
Specifically, before the ceramic tile blank enters the kiln, an aluminum salt solution is printed on the bottom (namely the back side, the side to be paved on a wall) of the ceramic tile blank through a bottom sizing machine, so that the water absorption of the back side is reduced while the water absorption of the surface of the ceramic tile is not changed. That is, when the water-soluble aluminum salt is dissolved in water and the brick bottom slurry is coated, the aluminum salt is adsorbed on the back grain wattles of the ceramic bricks, so that the water absorption of the back grain parts of the ceramic bricks can be increased. After the aluminum salt solution is printed, the brick bottom slurry is printed, so that the roller bar is prevented from being bonded to the bottom of the ceramic brick body in the sintering process.
In further implementations, the aluminum salt solution includes, in parts by weight: 15 parts of aluminum salt, 84.8 parts of water and 0.2 part of sodium carboxymethyl cellulose. That is, the aluminum salt used in the present invention is a water-soluble aluminum salt such as aluminum nitrate, aluminum chloride, polyaluminum chloride, aluminum sulfate, or the like. When the aluminum salt solution is used independently, the aluminum salt is dissolved in water, and a little CMC (sodium carboxymethyl cellulose) is added into the water, so that the aluminum salt solution is thickened and is convenient for printing by a paste machine.
In another implementation manner, because the specific weight of the brick bottom slurry is low and the water content is high, a water-soluble aluminum salt, such as aluminum nitrate, aluminum chloride, polyaluminum chloride, aluminum sulfate, etc., is dissolved in the brick bottom slurry, that is, a brick bottom slurry a, which is a mixture of an aluminum salt solution and the brick bottom slurry, may be prepared in advance, and specifically, referring to fig. 3, the step S500 includes:
step S510b, preparing a mixture of an aluminum salt solution and brick bottom slurry in advance;
step S520b, printing a mixture of aluminum salt solution and brick bottom slurry on the back of the ceramic tile blank through a bottom slurry machine, and adsorbing aluminum salt by the back stripe;
and step S530b, entering a kiln to fire to obtain the ceramic tile.
Namely, before the ceramic tile green body enters the kiln, the bottom slurry A of the ceramic tile green body is printed at the bottom of the ceramic tile green body through a bottom slurry machine, wherein the bottom slurry A is a mixture of an aluminum salt solution and magnesium oxide slurry, the water absorption of the back surface is reduced while the water absorption of the surface of the ceramic tile is not changed, and the roller stick is prevented from being bonded.
In one implementation, a mixture of an aluminum salt solution and a brick primer slurry, in parts by weight, comprises: 5 parts of aluminum salt solution and 95 parts of brick bottom slurry. Wherein the mass percentage concentration of the aluminum salt solution is 3-15%. For example, 30g of polyaluminum chloride is added to 100g of water, and the polyaluminum chloride solution is prepared by dissolving the polyaluminum chloride solution in a weight ratio of the polyaluminum chloride solution to the brick bottom slurry of 5:95, and the operation is simple.
Further, the aluminum salt solution is an aluminum nitrate solution, an aluminum chloride solution, a polyaluminum chloride solution or an aluminum sulfate solution.
The composition of the brick bottom slurry is different according to different glaze surfaces of products. For example, glazed tiles such as ceramic chips, stoneware glazed tiles, porcelain glazed tiles, etc., which are not polished, use tile primer slurry mainly containing alumina component; the brick bottom slurry mainly contains magnesium oxide for the fully polished glazed brick, polished brick and the like which need to be polished. The invention produces the full-glazed brick, so the magnesia slurry is used as the bottom slurry of the brick.
In one implementation, the content of aluminum salt in the aluminum salt solution is proportional to the water absorption of the ceramic tile. Specifically, if the content of the soluble aluminum salt added into the water is N%, the water absorption of the ceramic tile back grain is increased by increasing the N value, and the water absorption of the ceramic tile back grain is increased by decreasing the N value.
In addition, the back-grain chaste tree twigs of the ceramic tiles absorb aluminum salt, so that the content of aluminum oxide in chemical components of the back-grain chaste tree twigs is increased, the high-temperature resistance is enhanced, the high-temperature load capacity is improved, and the defects of roll-bar grains of the ceramic tiles are improved; in addition, because the back stripe wattle of the ceramic tile adsorbs aluminum salt, the content of alumina in the chemical components of the back stripe wattle is increased, the water absorption rate after firing is increased, the capability of adsorbing cement mortar during paving is enhanced, and the adsorption force between the ceramic tile and the wall surface is increased and the ceramic tile is not easy to fall off when the ceramic tile is paved on the wall.
The following examples are given for illustrative purposes.
The first embodiment is as follows:
referring to fig. 4, the method for preparing the ceramic tile specifically comprises:
step A1, pressing and forming the ceramic raw material by a press to obtain a ceramic tile blank, wherein the back of the ceramic tile blank is provided with back-grain chaste tree twigs;
step A2, drying the ceramic tile blank body, and spraying water to the surface of the dried ceramic tile blank body;
a3, spraying a ground coat on the surface of the ceramic green body after water spraying to form a ground coat layer;
step A4, printing a preset pattern on the ground coat layer to form a pattern layer;
step A5, spraying transparent glaze on the pattern layer to form a protective layer;
step A6, printing an aluminum salt solution on the back of the ceramic tile blank by a slurry machine;
step A7, after printing an aluminum salt solution, printing magnesium oxide slurry on the back of the ceramic tile blank by a slurry machine, and adsorbing aluminum salt by the vitex negundo;
and step A8, putting the ceramic tiles into a kiln to be fired to obtain the ceramic tiles.
Example two:
referring to fig. 5, the method for preparing the ceramic tile specifically includes:
step B1, pressing and molding the ceramic raw material by a press to obtain a ceramic tile green body, wherein the back of the ceramic tile green body is provided with back-striped chaste tree twigs;
step B2, drying the ceramic tile green body, and spraying water on the surface of the dried ceramic tile green body;
b3, spraying a ground coat on the surface of the ceramic green brick body after water spraying to form a ground coat layer;
step B4, printing a preset pattern on the ground glaze layer to form a pattern layer;
step B5, spraying transparent glaze on the pattern layer to form a protective layer;
step B6, printing a mixture of a pre-prepared aluminum salt solution and magnesium oxide slurry on the back surface of the ceramic tile blank by a slurry machine, wherein the vitex negundo absorbs aluminum salt;
and B7, putting the ceramic tile into a kiln to be fired to obtain the ceramic tile.
The invention also provides a ceramic tile prepared by the preparation method of the ceramic tile.
In summary, the invention discloses a ceramic tile and a preparation method thereof, wherein the preparation method of the ceramic tile comprises the following steps: drying the ceramic tile green body, and spraying water on the surface of the dried ceramic tile green body; spraying a ground coat on the surface of the ceramic green body after water spraying to form a ground coat layer; printing a preset pattern on the ground glaze layer to form a pattern layer; spraying transparent glaze on the pattern layer to form a protective layer; and printing an aluminum salt solution and a brick bottom slurry on one side of the ceramic tile blank body, which is far away from the protective layer, and firing the ceramic tile in a kiln to obtain the ceramic tile. According to the invention, the aluminum salt solution is printed on the back surface of the ceramic tile blank, and the back stripe of the ceramic tile absorbs aluminum salt, so that the content of alumina in the chemical components of the ceramic tile is increased, the water absorption rate after firing is increased, and the capability of absorbing cement mortar is enhanced, therefore, the adsorption force between the ceramic tile and the wall surface is increased when the ceramic tile is paved on the wall, and the ceramic tile is not easy to fall off; the tile glue is not needed, and the problem of infirm paving is solved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (4)

1. A method of making a ceramic tile, comprising:
pressing and molding the ceramic raw material by a press to obtain a ceramic tile green body; wherein, the back surface of the ceramic tile green body is provided with back-grain chaste tree twigs;
drying the ceramic tile green body, and spraying water on the surface of the dried ceramic tile green body;
spraying a ground coat on the surface of the ceramic green body after water spraying to form a ground coat layer;
printing a preset pattern on the ground glaze layer to form a pattern layer;
spraying transparent glaze on the pattern layer to form a protective layer;
printing an aluminum salt solution and a brick bottom slurry on one side of the ceramic brick blank body, which is far away from the protective layer, and firing the ceramic brick in a kiln to obtain a ceramic brick;
printing an aluminum salt solution and a brick bottom slurry on one side of the ceramic tile blank body, which is away from the protective layer, and firing the ceramic tile body in a kiln to obtain the ceramic tile, wherein the method comprises the following steps:
printing an aluminum salt solution on the back of the ceramic tile blank by a paste machine, wherein the aluminum salt solution comprises the following components in parts by weight: 15 parts of aluminum salt, 84.8 parts of water and 0.2 part of sodium carboxymethylcellulose;
after the aluminum salt solution is printed, printing a brick bottom slurry on the back surface of the ceramic tile blank by a bottom slurry machine, and adsorbing aluminum salt by the back grain chaste tree twigs;
putting the mixture into a kiln to be fired to obtain a ceramic tile;
or, preparing a mixture of an aluminum salt solution and brick bottom slurry in advance, wherein the mixture of the aluminum salt solution and the brick bottom slurry comprises the following components in parts by weight: 5 parts of aluminum salt solution and 95 parts of brick bottom slurry;
printing a mixture of an aluminum salt solution and brick bottom slurry on the back surface of the ceramic tile blank by a bottom slurry machine, wherein aluminum salt is adsorbed by the vitex negundo linn;
putting the mixture into a kiln to be fired to obtain a ceramic tile;
the aluminum salt solution is an aluminum nitrate solution, an aluminum chloride solution, a polyaluminum chloride solution or an aluminum sulfate solution; the brick bottom slurry is magnesium oxide slurry.
2. The method for preparing ceramic tiles according to claim 1, wherein the printing of a preset pattern on the ground glaze layer to form a pattern layer comprises:
and printing a preset pattern on the ground glaze layer by an ink-jet printing technology to form a pattern layer.
3. The method for preparing ceramic tiles according to claim 1, wherein the content of aluminum salt in the aluminum salt solution is proportional to the water absorption of the ceramic tiles.
4. Ceramic tile, characterized in that it is produced by a process for the preparation of ceramic tiles according to any one of claims 1 to 3.
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