Ink-wash Beijing brick with metallic heaviness and preparation method thereof

Abstract

A Beijing-style ink-and-wash brick with a metallic, heavy feel and its preparation method include applying a base glaze, protective glaze, and top glaze in ascending order. The base glaze, protective glaze, and top glaze are sprayed onto the brick blank in this order. The top glaze is a mixture of a suspending agent and frit in a 5:3 mass ratio. The metal particles and luster particles in the top glaze are integrated into the brick's texture. This method imparts a glossy, heavy-textured appearance to the brick surface. A protective layer is added between the metal particles, luster particles, and the base glaze, preventing stains on the brick surface while maintaining the particle effect.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic tiles, in particular to an ink-and-wash Beijing tile with a metallic heaviness and a preparation method thereof. Background Art

[0002] People often imagined the throne room, where the emperor conducted government affairs, as paved with gold bricks. This literal meaning, and the understanding of most people, suggests that these bricks were made of gold. However, these bricks were not actually made of gold, but rather Jing bricks from a dry kiln. The book "Golden Bricks and Flooring" specifically records this: "Jing bricks are fine-grained square bricks fired exclusively for the imperial palace. They have fine grains and a dense texture, and when struck, they make a resonant sound, hence the name 'gold bricks.' Because the bricks were shipped to Beijing's Jingcang warehouses for the exclusive use of the imperial palace, they became known as 'Jing bricks' and gradually spread to the wealthy." Another theory explains the origin of the name "gold bricks": During the Ming Dynasty, Jing bricks were extremely expensive, costing 50 taels of silver per brick, far beyond the reach of the average wealthy family. Therefore, the term "gold bricks" came to be used to refer to them. At the time, there was a popular saying: "One tael of gold is worth one brick." This is how the term "gold bricks" came to be known, and it has since become known as Jing bricks.

[0003] The firing of Beijing bricks is extremely demanding. After selecting the soil, it undergoes seven steps: excavation, transportation, drying, pounding, slurrying, grinding, and screening. Together with the firing and polishing process, the process can take up to 12 months. Currently, Beijing bricks on the market are generally over 8 centimeters thick, making them unwieldy for transportation and processing. Furthermore, the product lacks fidelity, and its hardness, stain resistance, and strength are far inferior to those of ordinary ceramic tiles. The surface of the bricks is relatively rough, making them unsuitable for ordinary home decoration. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a water-ink Beijing brick with a heavy metallic feel and a preparation method thereof.

[0005] An ink-and-wash Beijing brick with a metallic heaviness, comprising a base glaze, a protective glaze and a surface glaze arranged in sequence from bottom to top;

[0006] The base glaze is composed of the following raw materials in parts by weight: 30-50 parts of kaolin, 15-25 parts of quartz, 5-10 parts of potassium feldspar, 4-9 parts of sodium feldspar, 10-20 parts of calcite, 20-30 parts of talc, 10-25 parts of dolomite, 5-9 parts of zinc oxide, 5-12 parts of zircon powder, 30-60 parts of water, 0.2-0.4 parts of sodium tripolyphosphate, 0.2-0.4 parts of methyl cellulose and 0.01-0.03 parts of preservative;

[0007] The protective glaze is composed of the following raw materials in parts by weight: 35-56 parts of kaolin, 12-25 parts of quartz, 6-12 parts of potassium feldspar, 5-10 parts of sodium feldspar, 10-20 parts of calcite, 20-30 parts of talc, 10-25 parts of dolomite, 5-9 parts of zinc oxide, 5-12 parts of zircon powder, 30-60 parts of water, 0.2-0.4 parts of sodium tripolyphosphate, 0.2-0.4 parts of methyl cellulose and 0.01-0.03 parts of preservative;

[0008] The glaze is prepared by mixing a suspending agent and a frit in a mass ratio of 5:3.

[0009] The raw materials of the base glaze are put into a ball mill and milled to obtain a chemical composition by mass percentage of 55-59% SiO2, 25-26% Al2O3, 1-2% CaO, 0.4-0.6% MgO, 2-3% ZnO, 0.3-0.5% K2O, 2.6-3.3% Na2O, and 0.4-0.6% ZrO2.

[0010] The raw materials of the protective glaze are put into a ball mill to obtain a chemical composition by mass percentage of 54-57% SiO2, 17-19% Al2O3, 1-2% Ca0, 1-2% MgO, 4-5% ZnO, 3-4% K20, 2-3% Na20, 9-10% Ba0, and 6-8% ZrO2.

[0011] The fineness of the raw materials of the base glaze and the protective glaze is less than 100 meshes.

[0012] The frit includes a metal frit and a glossy frit. The glossy frit is composed of 8-10 parts of G-2886012 transparent dry granules and 40-45 parts of G-2881225 transparent dry granules in parts by weight; the metal frit is composed of 30-35 parts of G-2051225 transparent dry granules and 15-19 parts of G-2053045 transparent dry granules in parts by weight.

[0013] The G-2886012 model transparent dry granules have a particle fineness of 60 to 120 meshes and an onset melting point temperature of 1080°C; the G-2881225 model transparent dry granules have a particle fineness of 120 to 250 meshes and an onset melting point temperature of 1080°C; the G-2051225 model transparent dry granules have a particle fineness of 120 to 250 meshes and an onset melting point temperature of 1050°C; the G-2053045 model transparent dry granules have a particle fineness of 300 to 400 meshes and an onset melting point temperature of 1050°C.

[0014] The bright frit is composed of the following components in percentage by mass:

[0015] 58-60% SiO2, 15-17% A1203, 0.2-0.3% Fe2O3, 0.1-0.2% TiO2, 8-9% Ca0, 3-4% MgO, 3-4% K20, 1-2% Na20.

[0016] The metal frit is composed of the following components in percentage by mass:

[0017] 65-67% SiO2, 20-22% A1203, 0.6-0.8% Fe2O3, 0.1-0.2% TiO2, 0.3-0.4% Ca0, 0.7-0.8% MgO, 2-3% K20, 2-4% Na20, 0.07-0.09% P2O5.

[0018] A method for preparing ink-wash Beijing bricks with a metallic heaviness comprises the following steps:

[0019] Prepare bricks;

[0020] Prepare the base glaze, mix all the materials of the base glaze evenly, and then spray it on the surface of the brick;

[0021] Inkjet printing is performed on the surface of the base glaze to form a printing layer, which is then dried. During inkjet printing, the temperature of the brick is controlled at 40-50°C, and the belt speed of the inkjet machine is 30m / min.

[0022] Prepare the protective glaze, mix all the raw materials of the protective glaze evenly, and use a roller to print a layer of protective glaze on the printing layer;

[0023] Prepare the glaze, mix the suspending agent and frit of the glaze evenly, and spray the glaze on the protective glaze. The temperature of the brick is 55-65℃, and the glaze amount is 450g / m 2 , flow rate 40-50s, specific gravity 1.25±0.02;

[0024] The preparation is completed after drying, high-temperature firing, polishing and waxing.

[0025] Before spraying the base glaze on the brick, water is sprayed on the surface of the brick to moisten it, so as to prevent the base glaze from peeling. The water spraying amount is 100g / m 2 During high-temperature firing, the glaze-treated bricks are dried in a drying kiln and then fired at high temperature in a kiln. The firing temperature is 1100-1250°C and the firing cycle is 60-80min. When polishing, a combination of grinding blocks of different materials and mesh sizes is used. The glossiness of the brick surface is controlled at 15-30°. 800-mesh SY07 grinding blocks, 1000-1200-mesh black grinding blocks, 320-mesh grinding brushes and 400-mesh fiber brushes are used for grinding and polishing.

[0026] This invention introduces metallic dry particles and glossy transparent particles with a metallic luster, blending them into the texture of Beijing bricks through a waterfall-style distribution system (glaze bell). The polishing process is performed using a combination of multiple grinding blocks, resulting in a glossy, rich texture. Furthermore, a protective layer is added between the metal and glossy particles and the base glaze, which not only prevents stains on the brick surface but also ensures the effectiveness of the particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the complete preparation process of the present invention;

[0028] Figure 2 This is a schematic diagram of the curve during high temperature firing of the present invention. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] An ink-and-wash Beijing brick with a metallic heaviness, comprising a base glaze, a protective glaze and a surface glaze arranged in sequence from bottom to top;

[0032] The base glaze is composed of the following raw materials with a fineness of less than 10 mesh in parts by weight: 30 parts of kaolin, 15 parts of quartz, 5 parts of potassium feldspar, 4 parts of sodium feldspar, 10 parts of calcite, 20 parts of talc, 10 parts of dolomite, 5 parts of zinc oxide, 5 parts of zircon powder, 30 parts of water, 0.2 parts of sodium tripolyphosphate, 0.2 parts of methyl cellulose and 0.01 parts of preservative. Sodium tripolyphosphate is used as a degumming agent and is adjusted to an optimal addition amount. On the premise that the slurry viscosity meets the process requirements, the water content of the glaze slurry is reduced, the original fluidity of the glaze slurry is ensured, and the glaze slurry concentration is increased, thereby improving the ball milling efficiency and output and reducing energy consumption. The product was put into ball mill and milled into chemical composition of SiO2: 57.87%, A1203: 25.23%, Ca0: 1.79%, MgO: 0.55%, ZnO: 2.56%, K20: 0.49%, Na20: 3.07%, and ZrO2: 0.5%, and tested by ball milling for use.

[0033] The protective glaze is composed of the following raw materials with a fineness of less than 100 mesh, calculated by weight: 35 parts of kaolin, 12 parts of quartz, 6 parts of potassium feldspar, 5 parts of sodium feldspar, 10 parts of calcite, 20 parts of talc, 10 parts of dolomite, 5 parts of zinc oxide, 5 parts of zircon powder, 30 parts of water, 0.2 parts of sodium tripolyphosphate, 0.2 parts of methyl cellulose and 0.01 parts of preservative. In this process, sodium tripolyphosphate is selected as a degumming agent and is adjusted to an optimal addition amount. On the premise that the slurry viscosity meets the process requirements, the water content of the glaze slurry is reduced, the original fluidity of the glaze slurry is ensured, and the glaze slurry concentration is increased, thereby improving ball milling efficiency and output and reducing energy consumption. The product was put into ball mill and milled into chemical composition of SiO2: 55.5%, A1203: 18.20%, Ca0: 1.55%, MgO: 1.85%, ZnO: 4.45%, K20: 3.62%, Na20: 2.18%, Ba0: 9.50% and ZrO2: 7.15%, and then tested by ball milling for use.

[0034] The glaze is made of a mixture of suspending agent and frit in a mass ratio of 5:3. The frit includes metal frit and glossy frit. The frit is set to different gradations of fineness to expand the firing temperature range. The frit combines the good lubricity and appropriate viscosity of the printing ink, so that the frit has a certain adhesive force and low fluidity.

[0035] The frits include metal frits and glossy frits. The glossy frits are composed of 8 parts of G-2886012 model transparent dry particles and 40 parts of G-2881225 model transparent dry particles in parts by weight. The metal frits are composed of 30 parts of G-2051225 model transparent dry particles and 15 parts of G-2053045 model transparent dry particles in parts by weight.

[0036] The G-2886012 model transparent dry granules have a particle fineness of 60 mesh and an onset melting point temperature of 1080°C; the G-2881225 model transparent dry granules have a particle fineness of 120 mesh and an onset melting point temperature of 1080°C; the G-2051225 model transparent dry granules have a particle fineness of 120 mesh and an onset melting point temperature of 1050°C; the G-2053045 model transparent dry granules have a particle fineness of 300 mesh and an onset melting point temperature of 1050°C.

[0037] The bright frit is composed of the following components in percentage by mass:

[0038] 58% SiO2, 15% A1203, 0.2% Fe2O3, 0.1% TiO2, 8% Ca0, 3% MgO, 3% K20, 1% Na20.

[0039] The metal frit is composed of the following components in percentage by mass:

[0040] 65% SiO2, 20% A1203, 0.6% Fe2O3, 0.1% TiO2, 0.3% Ca0, 0.7% MgO, 2% K20, 2% Na20, 0.07% P2O5.

[0041] A method for preparing ink-wash Beijing bricks with a metallic heaviness comprises the following steps:

[0042] Prepare the bricks, which are prepared conventionally:

[0043] (1) Powder spraying granulation: Powder particle size distribution on 20 mesh sieve ≤ 1.5%, on 40 mesh sieve 40~55%

[0044] , 100 mesh sieve ≤3%); powder moisture 7.0% ~ 7.5%.

[0045] (2) Stamping: Use special Beijing brick concave and convex molds for stamping, the green strength is ≥

[0046] 0.6MPa.

[0047] (3) Drying: The temperature of the front section is controlled at 200-220℃;

[0048] The middle section temperature is controlled at 140-180°C;

[0049] The temperature of the rear section is controlled at 130-140℃;

[0050] The moisture content of the bricks after drying is controlled at 0.3-0.5%;

[0051] The strength of the dried bricks is ≥1.5MPa.

[0052] (4) Water spraying: After the bricks come out of the drying kiln, water is sprayed on their surface to moisten them, so as to prevent the bottom glaze from peeling. The water spraying amount is 100g / m 2 .

[0053] (5) Prepare the base glaze, mix all the materials of the base glaze evenly, and spray the base glaze: the spraying amount is 450g / m 2 , specific gravity 1.35±0.02.

[0054] (6) Inkjet printing process: inkjet printing is performed on the blank after applying the base glaze through an inkjet machine. The blank temperature before inkjet printing is controlled at 40-50°C, and the belt speed of the inkjet machine is 30m / min.

[0055] (7) Prepare protective glaze, mix all the materials of protective glaze evenly, and print protective glaze: use a roller to print a layer of protective glaze on the brick surface to improve the color and enhance the anti-fouling effect.

[0056] (7) Prepare the glaze, and then pour the Jing brick dry grain glaze on the surface of the inkjet printed body. The body temperature before pouring the glaze is 55-65℃ and the amount of the glaze is 450g / m 2 , flow rate 40~50s, specific gravity is 1.25±0.02.

[0057] (9) Drying and high temperature firing: The glazed bricks are dried in a drying kiln and then fired in a kiln at high temperature. The firing temperature is 1190°C and the firing cycle is 60 minutes. Figure 2 shown.

[0058] Polishing: By using abrasive blocks of different materials and mesh sizes combined in a specific way, the raised parts of the spherical Beijing bricks are deep-polished with low light, and the final glossiness of the brick surface is controlled at 15-30°. Four different abrasive blocks are selected for combination, and 800-mesh SY07 abrasive blocks, 1000-1200-mesh black abrasive blocks, 320-mesh abrasive brushes and 400-mesh fiber brushes are used for grinding and polishing.

[0059] Finally, waxing is applied to complete the preparation, and a brick body with a thickness of less than 8 cm can be obtained.

[0060] Example 2

[0061] An ink-and-wash Beijing brick with a metallic heaviness, comprising a base glaze, a protective glaze and a surface glaze arranged in sequence from bottom to top;

[0062] The base glaze is composed of the following raw materials with a fineness of less than 10 mesh in parts by weight: 50 parts of kaolin, 25 parts of quartz, 10 parts of potassium feldspar, 9 parts of sodium feldspar, 20 parts of calcite, 30 parts of talc, 25 parts of dolomite, 9 parts of zinc oxide, 12 parts of zircon powder, 60 parts of water, 0.29 parts of sodium tripolyphosphate, 0.25 parts of methyl cellulose and 0.015 parts of preservative. Sodium tripolyphosphate is used as a degumming agent and is adjusted to an optimal addition amount. On the premise that the slurry viscosity meets the process requirements, the water content of the glaze slurry is reduced, the original fluidity of the glaze slurry is ensured, and the glaze slurry concentration is increased, thereby improving the ball milling efficiency and output and reducing energy consumption. The product was put into ball mill and milled into chemical composition of SiO2: 57.87%, A1203: 25.23%, Ca0: 1.79%, MgO: 0.55%, ZnO: 2.56%, K20: 0.49%, Na20: 3.07%, and ZrO2: 0.5%, and tested by ball milling for use.

[0063] The protective glaze is composed of the following raw materials with a fineness of less than 100 mesh, calculated by weight: 56 parts of kaolin, 25 parts of quartz, 12 parts of potassium feldspar, 10 parts of sodium feldspar, 20 parts of calcite, 30 parts of talc, 25 parts of dolomite, 9 parts of zinc oxide, 12 parts of zircon powder, 60 parts of water, 0.27 parts of sodium tripolyphosphate, 0.26 parts of methyl cellulose and 0.018 parts of preservative. In this process, sodium tripolyphosphate is selected as a degumming agent and is adjusted to an optimal addition amount. On the premise that the slurry viscosity meets the process requirements, the water content of the glaze slurry is reduced, the original fluidity of the glaze slurry is ensured, and the glaze slurry concentration is increased, thereby improving ball milling efficiency and output and reducing energy consumption. The product was put into ball mill and milled into chemical composition of SiO2: 55.5%, A1203: 18.20%, Ca0: 1.55%, MgO: 1.85%, ZnO: 4.45%, K20: 3.62%, Na20: 2.18%, Ba0: 9.50% and ZrO2: 7.15%, and then tested by ball milling for use.

[0064] The glaze is made of a mixture of suspending agent and frit in a mass ratio of 5:3. The frit includes metal frit and glossy frit. The frit is set to different gradations of fineness to expand the firing temperature range. The frit combines the good lubricity and appropriate viscosity of the printing ink, so that the frit has a certain adhesive force and low fluidity.

[0065] The frits include metal frits and glossy frits. The glossy frits are composed of 8 parts of G-2886012 model transparent dry particles and 40 parts of G-2881225 model transparent dry particles in parts by weight. The metal frits are composed of 30 parts of G-2051225 model transparent dry particles and 15 parts of G-2053045 model transparent dry particles in parts by weight.

[0066] The G-2886012 model transparent dry granules have a particle fineness of 120 mesh and an onset melting point temperature of 1080°C; the G-2881225 model transparent dry granules have a particle fineness of 250 mesh and an onset melting point temperature of 1080°C; the G-2051225 model transparent dry granules have a particle fineness of 250 mesh and an onset melting point temperature of 1050°C; the G-2053045 model transparent dry granules have a particle fineness of 400 mesh and an onset melting point temperature of 1050°C.

[0067] The bright frit is composed of the following components in percentage by mass:

[0068] 59.66% SiO2, 16.2% A1203, 0.24% Fe2O3, 0.1% TiO2, 8.32% Ca0, 3.21% MgO, 3.28% K20, 1.19% Na20.

[0069] The metal frit is composed of the following components in percentage by mass:

[0070] 65.91% SiO2, 20.99% A1203, 0.67% Fe2O3, 0.14% TiO2, 0.36% Ca0, 0.77% MgO, 2.57% K20, 3.12% Na20, 0.08% P2O5.

[0071] A method for preparing ink-wash Beijing bricks with a metallic heaviness comprises the following steps:

[0072] Prepare the bricks, which are prepared conventionally:

[0073] (4) Powder spraying granulation: Powder particle size distribution on 20 mesh sieve ≤ 1.5%, on 40 mesh sieve 40~55%

[0074] , 100 mesh sieve ≤3%); powder moisture 7.0% ~ 7.5%.

[0075] (5) Stamping: Use special Beijing brick concave and convex molds for stamping, green strength ≥

[0076] 0.6MPa.

[0077] (6) Drying: The temperature of the front section is controlled at 200-220°C;

[0078] The middle section temperature is controlled at 140-180°C;

[0079] The temperature of the rear section is controlled at 130-140℃;

[0080] The moisture content of the bricks after drying is controlled at 0.3-0.5%;

[0081] The strength of the dried bricks is ≥1.5MPa.

[0082] (4) Water spraying: After the bricks come out of the drying kiln, water is sprayed on their surface to moisten them, so as to prevent the bottom glaze from peeling. The water spraying amount is 100g / m 2 .

[0083] (5) Prepare the base glaze, mix all the materials of the base glaze evenly, and spray the base glaze: the spraying amount is 450g / m 2 , specific gravity 1.35±0.02.

[0084] (6) Inkjet printing process: inkjet printing is performed on the blank after applying the base glaze through an inkjet machine. The blank temperature before inkjet printing is controlled at 40-50°C, and the belt speed of the inkjet machine is 30m / min.

[0085] (7) Prepare protective glaze, mix all the materials of protective glaze evenly, and print protective glaze: use a roller to print a layer of protective glaze on the brick surface to improve the color and enhance the anti-fouling effect.

[0086] (7) Prepare the glaze, and then pour the Jing brick dry grain glaze on the surface of the inkjet printed body. The body temperature before pouring the glaze is 55-65℃ and the amount of the glaze is 450g / m 2 , flow rate 40~50s, specific gravity is 1.25±0.02.

[0087] (9) Drying and high temperature firing: The glazed bricks are dried in a drying kiln and then fired in a kiln at high temperature. The firing temperature is 1190°C and the firing cycle is 60 minutes. Figure 2 shown.

[0088] Polishing: By using abrasive blocks of different materials and mesh sizes combined in a specific way, the raised parts of the spherical Beijing bricks are deep-polished with low light, and the final glossiness of the brick surface is controlled at 15-30°. Four different abrasive blocks are selected for combination, and 800-mesh SY07 abrasive blocks, 1000-1200-mesh black abrasive blocks, 320-mesh abrasive brushes and 400-mesh fiber brushes are used for grinding and polishing.

[0089] Finally, waxing is applied to complete the preparation, and a brick body with a thickness of less than 8 cm can be obtained.

[0090] It should be noted that the above description is not a limitation of the present invention. Without departing from the creative concept of the present invention, any obvious replacement is within the scope of protection of the present invention.

Claims

1. A kind of ink-wash Beijing brick with a heavy metallic feel, characterized by: It includes base glaze, protective glaze and top glaze arranged in sequence from bottom to top; The base glaze is composed of the following raw materials in parts by weight: 30-50 parts of kaolin, 15-25 parts of quartz, 5-10 parts of potassium feldspar, 4-9 parts of sodium feldspar, 10-20 parts of calcite, 20-30 parts of talc, 10-25 parts of dolomite, 5-9 parts of zinc oxide, 5-12 parts of zircon powder, 30-60 parts of water, 0.2-0.4 parts of sodium tripolyphosphate, 0.2-0.4 parts of methyl cellulose and 0.01-0.03 parts of preservative; The protective glaze is composed of the following raw materials in parts by weight: 35-56 parts of kaolin, 12-25 parts of quartz, 6-12 parts of potassium feldspar, 5-10 parts of sodium feldspar, 10-20 parts of calcite, 20-30 parts of talc, 10-25 parts of dolomite, 5-9 parts of zinc oxide, 5-12 parts of zircon powder, 30-60 parts of water, 0.2-0.4 parts of sodium tripolyphosphate, 0.2-0.4 parts of methyl cellulose and 0.01-0.03 parts of preservative; The top glaze is made of a mixture of a suspending agent and a frit in a mass ratio of 5:3, wherein the frit includes a metal frit and a bright frit; the raw materials of the base glaze are put into a ball mill and milled to obtain a chemical composition by mass percentage of 55-59% SiO2, 25-26% Al2O3, 1-2% CaO, 0.4-0.6% MgO, 2-3% ZnO, 0.3-0.5% K2O, 2.6-3.3% Na2O, and 0 .4-0.6% ZrO2; the raw materials of the protective glaze are put into a ball mill to obtain a chemical composition by mass percentage of 54-57% SiO2, 17-19% Al2O3, 1-2% CaO, 1-2% MgO, 4-5% ZnO, 3-4% K2O, 2-3% Na2O, 9-10% BaO, and 6-8% ZrO2; the bright frit is composed of the following components by mass percentage: 58-60% SiO2, 15-17% Al2O3, 0.2-0.3% Fe2O3, 0.1-0.2% TiO2, 8-9% CaO, 3-4% MgO, 3-4% K2O, 1-2% Na2O; the metal frit is composed of the following components in percentage by mass: 65-67% SiO2, 20-22% A12O3, 0.6-0.8% Fe2O3, 0.1-0.2% TiO2, 0.3-0.4% CaO, 0.7-0.8% MgO, 2-3% K2O, 2-4% Na2O, 0.07-0.09% P2O5.

2. The ink-wash Beijing brick with a metallic heavy feel according to claim 1 is characterized in that: The fineness of the raw materials of the base glaze and the protective glaze is less than 100 meshes.

3. A method for preparing ink-wash Beijing bricks with a metallic heaviness according to claim 1 or 2, characterized in that: The following steps are involved: Prepare bricks; Prepare the base glaze, mix all the materials of the base glaze evenly, and then spray it on the surface of the brick; Inkjet printing is performed on the surface of the base glaze to form a printing layer, which is then dried. During inkjet printing, the temperature of the brick is controlled at 40-50°C, and the belt speed of the inkjet machine is 30m / min. Prepare the protective glaze, mix all the raw materials of the protective glaze evenly, and use a roller to print a layer of protective glaze on the printing layer; Prepare the glaze, mix the suspending agent and frit of the glaze evenly, and spray the glaze on the protective glaze. The temperature of the brick is 55-65℃, and the glaze amount is 450g / m 2 , flow rate 40-50s, specific gravity 1.25±0.02; The preparation is completed after drying, high-temperature firing, polishing and waxing.

4. The preparation method according to claim 3, characterized in that Before spraying the base glaze on the brick, water is sprayed on the surface of the brick to moisten it, so as to prevent the base glaze from peeling. The water spraying amount is 100g / m 2 During high-temperature firing, the glaze-treated bricks are dried in a drying kiln and then fired in a kiln at high temperature. The firing temperature is 1100-1250°C and the firing cycle is 60-80 minutes. When polishing, a combination of grinding blocks of different materials and mesh sizes are used, and the glossiness of the brick surface is controlled at 15-30°.

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