Stone-like glazed ceramic and process for the production thereof

Abstract

The application relates to the field of ceramics and a preparation process thereof, in particular to a stone-simulated glazed ceramic and a preparation process thereof. The stone-simulated glazed ceramic comprises a body and a glaze, and the raw materials of the body comprise the following components in parts by weight: stone-simulated particles 20-30 parts, paper pulp clay 20-30 parts. The stone-simulated particles are treated specially, so that the surface of the body has a stone particle texture and is uniform in color; the paper pulp clay with a special formula is used as a bonding material for the stone-simulated particles, has high porosity and high elasticity, and can effectively avoid the body from cracking during forming and sintering; through special treatment of the surface of the body, the stone-simulated particles and columnar glass on the outer wall of the body are exposed from the paper pulp clay, the sintered body shows a stone-simulated texture, the hollow area shows the texture of glass particles, and the hollow area has a light transmission effect because the columnar glass penetrates the inside and outside of the body.

Description

Technical Field

[0001] This invention relates to the field of ceramics and their preparation processes, specifically to stone-like glazed ceramics and their preparation processes. Background Technology

[0002] Ceramic glazes can be classified into smooth and matte surfaces based on their surface smoothness. To achieve a stone-like texture effect, large-particle coloring oxides need to be added to the body. However, if undyed and unfired clay fragments are directly added to the coloring oxides, the clay fragments will melt and soften during the bisque firing process, and their color will mix with the body material, failing to create a stone-like granular texture. Alternatively, a layer of glaze or decorative clay can be added to the surface of the body and patterns can be carved on it to imitate the stone texture. This process is not only cumbersome and time-consuming, but also results in poor three-dimensionality and an unsatisfactory stone-like effect. Therefore, this case arises. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems through stone-like glazed ceramics and their preparation process.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a stone-like glazed ceramic, comprising a body and a glaze, wherein the raw materials of the body, by weight, include the following components: 20-30 parts of stone-like particles and 20-30 parts of pulp clay; and the raw materials of the glaze, by weight, include the following components: 30-40 parts of silicon dioxide, 25-30 parts of feldspar, 15-20 parts of porcelain clay, 10-15 parts of calcium carbonate, 5-8 parts of dolomite, and 5-8 parts of clay.

[0005] Preferably, the raw materials of the stone-like particles, by weight, include the following components: 3-4 parts of colorant, 30-40 parts of white clay, 20-30 parts of quartz, and 15-20 parts of potassium feldspar.

[0006] Preferably, the colorant is one of nickel compound, copper compound, manganese compound or iron compound.

[0007] Preferably, the raw materials of the pulp clay, by weight, include the following components: 20-25 parts pulp, 5-8 parts cotton fiber, 50-60 parts kaolin, 10-12 parts feldspar, and 5-8 parts bentonite.

[0008] Preferably, the top of the blank is open, and the side wall of the blank is provided with a light-transmitting area. A columnar glass is embedded in the light-transmitting area, and the columnar glass penetrates the inner and outer walls of the blank.

[0009] Preferably, the raw materials for the columnar glass, by weight, include the following components: 80-90 parts of quartz sand, 8-10 parts of barite, 5-8 parts of soda ash, 6-8 parts of barium carbonate, 4-8 parts of limestone, and 6-9 parts of feldspar.

[0010] The preparation process of the stone-like glazed ceramics described above includes the following steps:

[0011] Step a: Prepare stone-like particles;

[0012] Step b: Mix the pulp with other raw materials to obtain pulp clay;

[0013] Step c: Mix the stone-like granules and pulp clay together to obtain the blank;

[0014] Step d: Form the blank, and perform surface treatment and drying on the blank;

[0015] Step e: Glaze the body;

[0016] Step d: Firing in a kiln.

[0017] Preferably, the preparation process of the stone-feeling particles is as follows:

[0018] Add water to the colorant in a container and mix evenly until it becomes an emulsion;

[0019] The emulsion-like pigment is added to a mixture of white clay, quartz, and potassium feldspar, and then vacuum-mixed to produce colored mud.

[0020] The colored clay is patted into a cube and then cut into clay pieces using a cutting line.

[0021] The clay slabs were dried in the sun;

[0022] The dried clay slabs are then placed in a kiln for bisque firing at a temperature of 900 degrees Celsius.

[0023] After the clay flakes are crushed and sieved, they are made into stone-like granules.

[0024] Preferably, in step d, the molding blank specifically includes the following steps: after molding the blank with clay, it is baked until semi-dry, a hollow area is carved on the blank with a carving knife, a material arrangement area corresponding to the hollow area is drawn on the non-woven fabric with a pen, the bottom of the columnar glass is coated with glue and arranged at intervals in the material arrangement area of ​​the non-woven fabric, the non-woven fabric is attached to the outer wall of the blank, the columnar glass passes through the hollow area of ​​the blank, and paper pulp clay is filled from the inside of the blank into the hollow area. After the paper pulp clay dries, the non-woven fabric is peeled off, thereby forming a light-transmitting area on the blank.

[0025] Preferably, in step d, after the blank is dried, it is placed in a container, and moist sponge blocks are filled between the inner wall of the container and the outer wall of the blank, as well as inside the blank. After 2-3 hours, the blank is taken out, and the outer wall of the blank is wetted. The outer wall of the blank is first brushed with a brush, and then the surface of the blank is wiped with a non-woven cloth to reveal the texture of stone-like particles on the surface of the blank. The inner and outer walls of the light-transmitting area of ​​the blank are both wetted, brushed and cleaned with non-woven cloth to reveal the ends of the columnar glass in the light-transmitting area. Finally, the blank is dried.

[0026] As described above, the stone-like glazed ceramic and its preparation process provided by the present invention have the following beneficial effects: the specially treated stone-like particles give the surface of the body a stone-like texture and uniform color; the specially formulated pulp clay is used as a binder for the stone-like particles, which has high porosity and high elasticity, effectively preventing the body from cracking during molding and firing; through the special treatment of the body surface, the stone-like particles and columnar glass on the outer wall of the body are exposed from the pulp clay, revealing a stone-like texture after firing, while the hollowed-out area reveals the texture of glass particles, and since the columnar glass penetrates the body inside and outside, the hollowed-out area has a light-transmitting effect. Detailed Implementation

[0027] The present invention will be further described below through specific embodiments.

[0028] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0029] This invention relates to a stone-like glazed ceramic, comprising a body. The raw materials of the body, by weight, include the following components: 20-30 parts stone-like particles and 20-30 parts paper pulp clay. The stone-like particles contained in the body give the ceramic surface a stone-like texture after firing. The paper pulp clay is used as a binder for the stone-like particles, and its high porosity and high elasticity effectively prevent the body from cracking during forming and firing.

[0030] The raw materials for the stone-like granules, by weight, include the following components: 3-4 parts colorant, 30-40 parts white clay, 20-30 parts quartz, and 15-20 parts potassium feldspar. Different compounds can be selected for the color based on desired color; for example, nickel compounds result in a green layer, copper compounds in a blue or yellowish-green layer, manganese compounds in a purple layer, and iron compounds in a black or brown layer. The colorant is first prepared into an emulsion, then mixed with white clay. Using the white color of the white clay as a base color makes color mixing easier to control. Vacuum stirring ensures uniform color mixing, resulting in stone-like granules with a uniform color and a sandy texture after firing.

[0031] The raw materials for pulp clay, by weight, include the following components: 20-25 parts pulp, 5-8 parts cotton fiber, 50-60 parts kaolin, 10-12 parts feldspar, and 5-8 parts bentonite. The presence of pulp and cotton fiber in pulp clay effectively improves its strength, allowing the clay body to dry evenly. The clay is less prone to cracking during molding, drying, and firing. As organic materials, pulp and cotton fiber increase the porosity and elasticity of the clay body after combustion. For clay bodies containing pre-fired stone-like particles, cracking and bursting are even less likely to occur.

[0032] Stone-like glazed ceramics also include the glaze. The raw materials for the glaze, by weight, include the following components: 30-40 parts silica, 25-30 parts feldspar, 15-20 parts kaolin, 10-15 parts calcium carbonate, 5-8 parts dolomite, and 5-8 parts clay. The glaze is transparent; if color is required, appropriate colorants are added to the glaze.

[0033] The top of the billet is open, and the side walls of the billet have light-transmitting areas. Columnar glass pieces are embedded within these light-transmitting areas, penetrating both the inner and outer walls of the billet. The gaps between the columnar glass pieces within the light-transmitting areas are filled with pulp clay, resulting in multiple columnar glass pieces spaced apart within the light-transmitting areas. Because the top of the billet is open, light from inside the billet can be observed from the outside through the columnar glass pieces. The glass pieces appear as dots distributed within the light-transmitting areas, creating a unique aesthetic.

[0034] The raw materials for columnar glass, by weight, include the following components: 80-90 parts quartz sand, 8-10 parts barite, 5-8 parts soda ash, 6-8 parts barium carbonate, 4-8 parts limestone, and 6-9 parts feldspar. Columnar glass is produced through raw material mixing, melting, molding, and cooling. The diameter of the columnar glass is 1-3 mm, and its length, matching the thickness of the ceramic body, is 2-6 mm. The high proportion of quartz in the raw materials gives it a high melting point after molding, resulting in only slight melting during subsequent ceramic firing, thus maintaining its overall shape. The columnar glass penetrates both inside and outside the ceramic body, giving the area it occupies a translucent and sparkling effect.

[0035] Stone-like glazed ceramics and their preparation process include the following steps:

[0036] Step a: Prepare stone-like particles;

[0037] Step b: Mix the pulp with other raw materials to obtain pulp clay;

[0038] Step c: Mix the stone-like granules and pulp clay together to obtain the blank;

[0039] Step d: Form the blank, and perform surface treatment and drying on the blank;

[0040] Step e: Glaze the body;

[0041] Step d: Firing in a kiln.

[0042] The preparation process of the stone-feeling granules is as follows:

[0043] Add water to the colorant in a container and mix evenly until it becomes an emulsion;

[0044] The emulsion-like colorant is added to a mixture of white clay, quartz, and potassium feldspar, and then vacuum-mixed to obtain colored mud. When preparing the raw material for the stone-like particles, if the colorant is directly added to the white clay for coloring, it is easy to cause uneven color. In this invention, the colorant is first prepared into an emulsion, then mixed with white clay, and then vacuum-mixed. The colorant is evenly mixed, and after firing, the stone-like particles have a uniform color. Using the white color of white clay as the base color for coloring makes it easier to control the color.

[0045] The colored clay is patted into a cube and then cut into clay pieces using a cutting line.

[0046] The clay slabs were dried in the sun;

[0047] After drying, the clay slabs are placed in a kiln for bisque firing at a temperature of 900 degrees Celsius. After bisque firing, the organic matter in the clay slabs decomposes, the moisture evaporates, and the clay slabs develop a certain strength but are not fully sintered.

[0048] After the clay flakes are crushed and sieved, they are made into stone-like granules.

[0049] If colored oxides are directly added to undyed and unfired clay fragments, the clay fragments will melt and soften during the bisque firing process, and the color will mix with the body material, failing to form a texture similar to stone particles. Alternatively, simply adding a layer of glaze or decorative clay to the surface of the body and carving patterns on it to imitate the texture of stone is not only cumbersome and time-consuming, but also results in poor three-dimensionality and an unsatisfactory stone-like effect. Therefore, it is necessary to pre-fire colored stone-like particles, mix them with the body material, and then fire them. During the firing process, the stone-like particles remain stable, and after firing, they will present a stone-like texture on the surface of the body.

[0050] In step d, the molding of the blank specifically includes the following steps: after molding the blank with clay, bake it until semi-dry, carve out the hollow area on the blank with a carving knife, draw the material arrangement area corresponding to the hollow area on the non-woven fabric with a pen, apply glue to the bottom of the columnar glass and adhere it to the non-woven fabric, arrange the columnar glass at intervals in the material arrangement area of ​​the non-woven fabric, attach the non-woven fabric to the outer wall of the blank, let the columnar glass pass through the hollow area of ​​the blank, fill the hollow area from the inside of the blank with paper pulp clay, fill the gap between the columnar glass and the blank with paper pulp clay, so that the columnar glass is embedded in the blank, and after the paper pulp clay dries, tear off the non-woven fabric, thereby forming a light-transmitting area on the blank. By arranging columnar glass on non-woven fabric in advance, transferring the arranged columnar glass to the hollow area of ​​the blank, and filling the gaps between the columnar glass with paper pulp clay, the columnar glass is arranged at intervals in the hollow area. Since the columnar glass penetrates the inside and outside of the blank, the light inside the blank is projected through the columnar glass, and the glossy glass texture can be observed from the outside of the ceramic.

[0051] In step d, after the blank is dried, it is placed in a container, and moistened sponge blocks are filled between the inner wall of the container and the outer wall of the blank, as well as inside the blank. After 2-3 hours, the blank is removed. The outer wall of the blank is wetted, and first brushed with a brush, then wiped with a non-woven cloth to reveal the texture of stone-like particles. The inner and outer walls of the light-transmitting areas of the blank are also wetted, brushed, and cleaned with non-woven cloth to reveal the ends of the columnar glass in the light-transmitting areas. Finally, the blank is dried. Through the special treatment of the blank surface, the stone-like particles and columnar glass on the outer wall of the blank are exposed from the pulp clay, revealing a stone-like texture after firing. The hollow areas reveal the texture of glass particles, and because the columnar glass runs through the inside and outside of the blank, the hollow areas have a light-transmitting effect.

[0052] The above are merely some specific embodiments of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing upon the protection scope of the present invention.

Claims

1. Stone-like glazed ceramic, characterized by: The product comprises a body and a glaze. The raw materials for the body, by weight, include the following components: 20-30 parts of stone-like particles and 20-30 parts of pulp clay. The raw materials for the glaze, by weight, include the following components: 30-40 parts of silica, 25-30 parts of feldspar, 15-20 parts of porcelain clay, 10-15 parts of calcium carbonate, 5-8 parts of dolomite, and 5-8 parts of ball clay. The raw materials for the stone-like particles, by weight, include the following components: 3-4 parts of colorant, 30-40 parts of white clay, 20-30 parts of quartz, and 15-20 parts of potassium feldspar. The raw materials for the pulp clay, by weight, include the following components: 20-25 parts of pulp, 5-8 parts of cotton fiber, 50-60 parts of kaolin, 10-12 parts of feldspar, and 5-8 parts of bentonite.

2. The stone-like glazed ceramic according to claim 1, characterized in that: The colorant is one of nickel compounds, copper compounds, manganese compounds, or iron compounds.

3. The stone-like glazed ceramic according to claim 1, characterized in that: The top of the billet is open, and the side wall of the billet is provided with a light-transmitting area. A columnar glass is embedded in the light-transmitting area, and the columnar glass penetrates the inner and outer walls of the billet.

4. The stone-like glazed ceramic according to claim 3, characterized in that: The raw materials for the columnar glass, by weight, include the following components: 80-90 parts of quartz sand, 8-10 parts of barite, 5-8 parts of soda ash, 6-8 parts of barium carbonate, 4-8 parts of limestone, and 6-9 parts of feldspar.

5. The preparation process of stone-like glazed ceramics according to any one of claims 1-4, characterized in that, Includes the following steps: Step a: Prepare stone-like particles; Step b: Mix the pulp with other raw materials to obtain pulp clay; Step c: Mix the stone-like granules and pulp clay together to obtain the blank; Step d: Form the blank, and perform surface treatment and drying on the blank; Step e: Glaze the body; Step d: Firing in a kiln.

6. The preparation process of the stone-like glazed ceramic according to claim 5, characterized in that: The preparation process of the stone-like particles is as follows: Add water to the colorant in a container and mix evenly until it becomes an emulsion; The emulsion-like pigment is added to a mixture of white clay, quartz, and potassium feldspar, and then vacuum-mixed to produce colored mud. The colored clay is patted into a cube and then cut into clay pieces using a cutting line. The clay slabs were dried in the sun; The dried clay slabs are then placed in a kiln for bisque firing at a temperature of 900 degrees Celsius. After the clay flakes are crushed and sieved, they are made into stone-like granules.

7. The preparation process of the stone-like glazed ceramic according to claim 5, characterized in that: In step d, the molding blank specifically includes the following steps: after molding the blank with clay, bake it until semi-dry, carve a hollow area on the blank with a carving knife, draw the material arrangement area corresponding to the hollow area on the non-woven fabric with a pen, apply glue to the bottom of the columnar glass and arrange them at intervals in the material arrangement area of ​​the non-woven fabric, attach the non-woven fabric to the outer wall of the blank, let the columnar glass pass through the hollow area of ​​the blank, fill the hollow area from the inside of the blank with pulp clay, and after the pulp clay dries, tear off the non-woven fabric, thereby forming a light-transmitting area on the blank.

8. The preparation process of the stone-like glazed ceramic according to claim 5, characterized in that: In step d, after the blank is dried, it is placed in a container, and moist sponge blocks are filled between the inner wall of the container and the outer wall of the blank, as well as inside the blank. After 2-3 hours, the blank is taken out, and the outer wall of the blank is wetted. First, the outer wall of the blank is brushed with a brush, and then the surface of the blank is wiped with a non-woven cloth to reveal the texture of stone-like particles on the surface of the blank. The inner and outer walls of the light-transmitting area of ​​the blank are both wetted, brushed and cleaned with non-woven cloth to reveal the ends of the columnar glass in the light-transmitting area. Finally, the blank is dried.