Ceramic crack glaze and method of making

Abstract

The application discloses a ceramic crack glaze and a preparation method, relates to the technical field of ceramic glazing, and is characterized in that: first color glaze is first sprayed on a ceramic body, and then second color glaze is sprayed, so that the first color glaze and the second color glaze react to form a eutectic point at high temperature, and defects of the second color are filled, thereby a crack glaze with good stain resistance is prepared, and the glaze surface not only has a unique color of cracks, but also has good stain resistance.

Description

Technical Field

[0001] This invention belongs to the field of ceramic glazing technology, specifically relating to a ceramic crackle glaze and its preparation method. Background Technology

[0002] In order to enrich the colors of ceramic products and attract customers, various glazes have been developed, such as monochrome glazes, mixed glazes, mirror-patterned glazes, crackle glazes, and so on.

[0003] A common method for preparing crackle glazes involves using potassium feldspar, quartz, kaolin, and magnesium carbonate as raw materials. The cracks are created by the hydrolytic properties of magnesium carbonate, which result in a difference in shrinkage ratio. However, this type of crackle glaze has many structural defects, leading to poor overall stain resistance. Conversely, reducing the proportion of magnesium carbonate to improve overall stain resistance also compromises the crackle effect. Therefore, improving the stain resistance of crackle glazes while maintaining the desired pattern has become a pressing issue. Summary of the Invention

[0004] The purpose of this invention is to provide a ceramic crackle glaze that improves the stain resistance of the crackle glaze while maintaining the crackle pattern.

[0005] To achieve the above objectives, the following technical solution is adopted: A ceramic crackle glaze, wherein the ceramic crackle glaze is obtained by first spraying a first color glaze onto a ceramic body, then spraying a second color glaze, and allowing the first and second color glazes to react at a high temperature: The raw materials of the first color glaze, by weight, include: 20-30 parts potassium feldspar powder, 30-35 parts nano quartz powder, 10-12 parts calcite, 3-7 parts kaolin, 5-7 parts dolomite, 5-9 parts calcined talc, 2-5 parts zinc oxide, and 0-8 parts first colorant. The raw materials for the second color glaze, by weight, include: 20-30 parts potassium feldspar powder, 25-30 parts quartz powder, 10-15 parts calcite, 8-16 parts kaolin, 10-15 parts magnesium carbonate, 3-6 parts zinc oxide, and 0-7 parts second colorant.

[0006] By adopting the above technical solution, at high temperature, the nano-quartz in the first glaze and the magnesium carbonate in the second glaze undergo a chemical reaction and synergistic effect, resulting in a lower eutectic point, filling crack defects, and enhancing the stain resistance of the final cracked glaze.

[0007] Another objective of this invention is to provide a method for preparing ceramic crackle glaze, which makes the method for preparing crackle glaze with good stain resistance simple and easy to operate.

[0008] To achieve the above objectives, the following technical solution is adopted: A method for preparing ceramic crackle glaze includes the following steps: S1. Mix, grind, and sieve the color glaze raw materials to prepare the first color glaze for later use; The raw materials for preparing the first color glaze, by weight, include: 20-30 parts potassium feldspar powder, 30-35 parts nano quartz powder, 10-12 parts calcite, 3-7 parts kaolin, 5-7 parts dolomite, 5-9 parts calcined talc, 2-5 parts zinc oxide, and 0-8 parts first colorant. S2. Take other colored glaze raw materials, mix, grind and sieve them to prepare a second colored glaze for later use; The raw materials for preparing the second color glaze, by weight, include: 20-30 parts potassium feldspar powder, 25-30 parts quartz powder, 10-15 parts calcite, 8-16 parts kaolin, 10-15 parts magnesium carbonate, 3-6 parts zinc oxide, and 0-7 parts second colorant. S3. The first color glaze is sprayed onto the ceramic body; S4. Spray the second color glaze onto the ceramic body and cover it with the first color glaze; S5. Clean the surface of the ceramic body before drying; S6. The product is obtained by firing at 1200℃.

[0009] Furthermore, according to the parts by weight, the raw materials for preparing the first colorant include: 25 parts cobalt oxide, 20 parts chromium oxide, 6 parts nickel oxide, and 49 parts iron oxide.

[0010] Furthermore, the raw materials for preparing the second colorant, by weight, include: 60 parts zirconium oxide, 20 parts potassium nitrate, 12 parts aluminum oxide, 6 parts borax, and 4 parts calcium fluoride.

[0011] Compared with the prior art, this technical solution has at least the following advantages: 1. This invention has good stain resistance while maintaining the crackled glaze pattern. 2. The method for preparing crackle glaze with good anti-fouling properties according to the present invention is simple and the raw materials are readily available. Attached Figure Description

[0012] Figure 1 This is a diagram showing the glaze effect obtained in Embodiment 1 of the present invention; Figure 2 This is a diagram showing the glaze effect obtained in Embodiment 2 of the present invention; Figure 3 This is a diagram showing the glaze effect obtained in Embodiment 3 of the present invention; Figure 4 This is a comparison image of the glaze effect in Example 1; Figure 5 This is a comparison image of the glaze effect in Example 2; Figure 6This is a comparison image of the glaze effect in Example 3; Figure 7 This is a comparison image of the glaze effect in Example 4; Figure 8 This is a glaze effect diagram of Comparative Example 5. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Unless otherwise specified, the raw materials and equipment used in this invention are commercially available. In the embodiments and comparative examples of this invention, the quartz powder described is ordinary quartz powder, and nano-quartz powder will be directly referred to as "nano-quartz powder." Example 1

[0014] A type of ceramic crackle glaze is prepared according to the following steps: Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0015] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix and ball mill, sieve to obtain a color slurry, then calcine the color slurry at 1330~1350℃ for 2~4 hours, quench with water to obtain a block colorant, then put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0016] The third step is to prepare the first color glaze: Take 3 kg of potassium feldspar powder, 3 kg of nano-quartz powder, 1.2 kg of calcite, 0.7 kg of kaolin, 0.5 kg of dolomite, 0.5 kg of calcined talc, 0.2 kg of zinc oxide, and 0.8 kg of the first colorant. Mix them with 10 kg of water, ball mill them, and sieve them to obtain the first color glaze.

[0017] The fourth step is to prepare the second color glaze: 2.5 kg of potassium feldspar powder, 2.75 kg of quartz powder, 1.25 kg of calcite, 1.4 kg of kaolin, 1 kg of magnesium carbonate, 0.4 kg of zinc oxide, and 0.7 kg of the second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze. The fifth step is to spray the first color glaze onto the ceramic body.

[0018] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0019] Step 7: Clean the surface of the ceramic blank and then dry it.

[0020] The eighth step is to fire the product at 1200℃.

[0021] The glaze effect image of this ceramic product is shown below. Figure 1 As shown. Example 2

[0022] A type of ceramic crackle glaze is prepared according to the following steps: Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0023] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix, ball mill, and sieve to obtain a color paste. Then, calcine the color paste at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0024] The third step is to prepare the first color glaze: Take 2.8 kg of potassium feldspar powder, 2.6 kg of nano-quartz powder, 1.5 kg of calcite, 1 kg of kaolin, 0.1 kg of dolomite, 0.5 kg of calcined talc, 0.2 kg of zinc oxide, and 0 kg of the first colorant. Mix them with 10 kg of water, ball mill them, and sieve them to obtain the first color glaze.

[0025] The fourth step is to prepare the second color glaze: 2.7 kg of potassium feldspar powder, 2.55 kg of quartz powder, 1.35 kg of calcite, 1.2 kg of kaolin, 1 kg of magnesium carbonate, 0.5 kg of zinc oxide, and 0.7 kg of second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze.

[0026] The fifth step is to spray the first color glaze onto the ceramic body.

[0027] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0028] Step 7: Clean the surface of the ceramic blank and then dry it.

[0029] The eighth step is to fire the product at 1200℃.

[0030] The glaze effect image of this ceramic product is shown below. Figure 2 As shown. Example 3

[0031] A type of ceramic crackle glaze is prepared according to the following steps: Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0032] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix, ball mill, and sieve to obtain a color paste. Then, calcine the color paste at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0033] The third step is to prepare the first color glaze: Take 2.6 kg of potassium feldspar powder, 3 kg of nano-quartz powder, 1.1 kg of calcite, 0.6 kg of kaolin, 0.7 kg of dolomite, 0.9 kg of calcined talc, 0.4 kg of zinc oxide, and 0.2 kg of the first colorant. Mix them with 10 kg of water, ball mill them, and sieve them to obtain the first color glaze.

[0034] The fourth step is to prepare the second color glaze: 2.9 kg of potassium feldspar powder, 2.25 kg of quartz powder, 1.15 kg of calcite, 1 kg of kaolin, 1.2 kg of magnesium carbonate, 0.7 kg of zinc oxide, and 0.8 kg of second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze.

[0035] The fifth step is to spray the first color glaze onto the ceramic body.

[0036] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0037] Step 7: Clean the surface of the ceramic blank and then dry it.

[0038] The eighth step is to fire the product at 1200℃.

[0039] The glaze effect image of this ceramic product is shown below. Figure 3 As shown.

[0040] Comparative Example 1 A type of ceramic crackle glaze is prepared according to the following steps: Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, 4.9 kg of iron oxide, and 10 kg of water, mix them, ball mill them, and sieve them to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water, and obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix it, ball mill it, sieve it, and dry it to obtain the first colorant.

[0041] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix, ball mill, and sieve to obtain a color paste. Then, calcine the color paste at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0042] The third step involves taking 3 kg of potassium feldspar powder, 3 kg of nano-quartz powder, 1.2 kg of calcite, 0.7 kg of kaolin, 0.5 kg of dolomite, 0.5 kg of calcined talc, 0.2 kg of zinc oxide, and 0.8 kg of the first colorant. After mixing with 10 kg of water, the mixture is ball-milled and sieved to obtain the first color glaze.

[0043] The fourth step is to prepare the second color glaze: 2.5 kg of potassium feldspar powder, 2.75 kg of quartz powder, 1.25 kg of calcite, 1.4 kg of kaolin, 1 kg of magnesium carbonate, 0.4 kg of zinc oxide, and 0.7 kg of second colorant. Mix with 10 kg of water, ball mill, and sieve to obtain the second color glaze.

[0044] The fifth step is to mix the first and second color glazes, ball mill them, and sieve them to obtain the third color glaze.

[0045] Step 6: The third color glaze is sprayed onto the ceramic body.

[0046] Step 7: Clean the surface of the ceramic blank and then dry it.

[0047] The eighth step is to fire the product at 1200℃.

[0048] The glaze effect image of this ceramic product is shown below. Figure 4 As shown.

[0049] Comparative Example 2 A type of ceramic crackle glaze is prepared according to the following steps: Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0050] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride. Add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water, and obtain a block colorant. Put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0051] The third step involves taking 2 kg of potassium feldspar powder, 1 kg of nano-quartz powder, 1.2 kg of calcite, 0.7 kg of kaolin, 0.5 kg of dolomite, 0.5 kg of calcined talc, 0.2 kg of zinc oxide, and 0.8 kg of the first colorant. After mixing with 10 kg of water, the mixture is ball-milled and sieved to obtain the first color glaze.

[0052] The fourth step is to prepare the second color glaze: 2.5 kg of potassium feldspar powder, 2.75 kg of quartz powder, 1.25 kg of calcite, 1.4 kg of kaolin, 1 kg of magnesium carbonate, 0.4 kg of zinc oxide, and 0.7 kg of second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze.

[0053] The fifth step is to spray the first color glaze onto the ceramic body.

[0054] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0055] Step 7: Clean the surface of the ceramic blank and then dry it.

[0056] The eighth step is to fire the product at 1200℃.

[0057] The glaze effect image of this ceramic product is shown below. Figure 5 As shown.

[0058] Comparative Example 3 A type of ceramic crackle glaze is prepared according to the following steps: Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0059] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix, ball mill, and sieve to obtain a color paste. Then, calcine the color paste at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0060] The third step is to prepare the first color glaze: Take 2.6 kg of potassium feldspar powder, 3 kg of nano-quartz powder, 0.9 kg of calcite, 0.8 kg of kaolin, 0.9 kg of dolomite, 0.4 kg of calcined talc, 0.4 kg of zinc oxide, and 0.5 kg of the first colorant. Mix them with 10 kg of water, ball mill them, and sieve them to obtain the first color glaze.

[0061] The fourth step is to prepare the second color glaze: 2.9 kg of potassium feldspar powder, 5 kg of quartz powder, 1.15 kg of calcite, 2 kg of kaolin, 1.2 kg of magnesium carbonate, 0.7 kg of zinc oxide, and 0.8 kg of second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze.

[0062] The fifth step is to spray the first color glaze onto the ceramic body.

[0063] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0064] Step 7: Clean the surface of the ceramic blank and then dry it.

[0065] The eighth step is to fire the product at 1200℃.

[0066] The glaze effect image of this ceramic product is shown below. Figure 6 As shown.

[0067] Comparative Example 4 Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0068] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix, ball mill, and sieve to obtain a color paste. Then, calcine the color paste at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0069] The third step is to prepare the first color glaze: Take 3 kg of potassium feldspar powder, 3 kg of quartz powder, 1.2 kg of calcite, 0.7 kg of kaolin, 0.5 kg of dolomite, 0.5 kg of calcined talc, 0.2 kg of zinc oxide, and 0.8 kg of the first colorant. Mix them with 10 kg of water, ball mill them, and sieve them to obtain the first color glaze.

[0070] The fourth step is to prepare the second color glaze: 2.5 kg of potassium feldspar powder, 2.75 kg of quartz powder, 1.25 kg of calcite, 1.4 kg of kaolin, 1 kg of magnesium carbonate, 0.4 kg of zinc oxide, and 0.7 kg of second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze.

[0071] The fifth step is to spray the first color glaze onto the ceramic body.

[0072] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0073] Step 7: Clean the surface of the ceramic blank and then dry it.

[0074] The eighth step is to fire the product at 1200℃.

[0075] The rendering of this ceramic product is as follows: Figure 7 As shown.

[0076] Comparative Example 5 Step 1: Preparation of the first colorant: Take 2.5 kg of cobalt oxide, 2 kg of chromium oxide, 0.6 kg of nickel oxide, and 4.9 kg of iron oxide, add 10 kg of water, mix, ball mill, and sieve to obtain a color slurry. Then, calcine the color slurry at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the first colorant.

[0077] The second step is to prepare the second colorant: Take 6 kg of zirconium oxide, 2 kg of potassium nitrate, 1.2 kg of aluminum oxide, 0.6 kg of borax, and 0.4 kg of calcium fluoride, add 10 kg of water, mix, ball mill, and sieve to obtain a color paste. Then, calcine the color paste at 1330~1350℃ for 2~4 hours, quench it with water to obtain a block colorant. Then, put the block colorant into a ball mill, add 10 kg of water again, mix, ball mill, sieve, and dry to obtain the second colorant.

[0078] The third step is to prepare the first color glaze: Take 3 kg of potassium feldspar powder, 3 kg of nano-quartz powder, 1.2 kg of calcite, 0.7 kg of kaolin, 0.5 kg of dolomite, 0.5 kg of calcined talc, 0.2 kg of zinc oxide, and 0.8 kg of the first colorant. Mix them with 10 kg of water, ball mill them, and sieve them to obtain the first color glaze.

[0079] The fourth step is to prepare the second color glaze: 2.5 kg of potassium feldspar powder, 2.75 kg of quartz powder, 1.25 kg of calcite, 1.4 kg of kaolin, 0 kg of magnesium carbonate, 0.4 kg of zinc oxide, and 0.7 kg of second colorant are mixed with 10 kg of water, ball-milled, and sieved to obtain the second color glaze.

[0080] The fifth step is to spray the first color glaze onto the ceramic body.

[0081] The sixth step is to spray the second color glaze onto the ceramic body and cover it with the first color glaze.

[0082] Step 7: Clean the surface of the ceramic blank and then dry it.

[0083] The eighth step is to fire the product at 1200℃.

[0084] The glaze effect image of this ceramic product is shown below. Figure 8 As shown.

[0085] Antifouling performance tests were conducted on Examples 1 to 3 and Comparative Examples 1 to 5, and the results are shown in Table 1. Table 1 Antifouling performance test Example 1 Black cracks Unvacuumed Example 2 Transparent crack Unvacuumed Example 3 translucent crack Unvacuumed Comparative Example 1 No obvious cracks, but serious glaze defects. Unvacuumed Comparative Example 2 No uniform cracks, overheated Vacuum Comparative Example 3 No uniform cracks, overheated Vacuum Comparative Example 4 Glaze peels off after glazing Vacuum Comparative Example 5 The glaze peeled off after firing. Vacuum Test method for stain resistance: Soak the test piece in ink for 24 hours, then remove it, clean the ink stains on the surface, let it dry, and observe the stains on the glaze under a magnifying glass.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ceramic crackle glaze, characterized in that, The ceramic crackle glaze is obtained by first spraying a first color glaze onto the ceramic body, then spraying a second color glaze, and allowing the first and second color glazes to react at a high temperature. The raw materials of the first color glaze, by weight, include: 20-30 parts potassium feldspar powder, 30-35 parts nano quartz powder, 10-12 parts calcite, 3-7 parts kaolin, 5-7 parts dolomite, 5-9 parts calcined talc, 2-5 parts zinc oxide, and 0-8 parts first colorant. The raw materials for the second color glaze, by weight, include: 20-30 parts potassium feldspar powder, 25-30 parts quartz powder, 10-15 parts calcite, 8-16 parts kaolin, 10-15 parts magnesium carbonate, 3-6 parts zinc oxide, and 0-7 parts second colorant.

2. A method for preparing a ceramic crackle glaze, characterized in that, Includes the following steps: S1. Mix, grind, and sieve the color glaze raw materials to prepare the first color glaze for later use; The raw materials for preparing the first color glaze, by weight, include: 20-30 parts potassium feldspar powder, 30-35 parts nano quartz powder, 10-12 parts calcite, 3-7 parts kaolin, 5-7 parts dolomite, 5-9 parts calcined talc, 2-5 parts zinc oxide, and 0-8 parts first colorant. S2. Take other colored glaze raw materials, mix, grind and sieve them to prepare a second colored glaze for later use; The raw materials for preparing the second color glaze, by weight, include: 20-30 parts potassium feldspar powder, 25-30 parts quartz powder, 10-15 parts calcite, 8-16 parts kaolin, 10-15 parts magnesium carbonate, 3-6 parts zinc oxide, and 0-7 parts second colorant. S3. The first color glaze is sprayed onto the ceramic body; S4. Spray the second color glaze onto the ceramic body and cover it with the first color glaze; S5. Clean the surface of the ceramic body before drying; S6. The product is obtained by firing at 1200℃.

3. The method for preparing a ceramic crackle glaze according to claim 2, characterized in that, The raw materials for preparing the first colorant, by weight, include: 25 parts cobalt oxide, 20 parts chromium oxide, 6 parts nickel oxide, and 49 parts iron oxide.

4. The method for preparing a ceramic crackle glaze according to claim 2, characterized in that, The raw materials for preparing the second colorant, by weight, include: 60 parts zirconium oxide, 20 parts potassium nitrate, 12 parts aluminum oxide, 6 parts borax, and 4 parts calcium fluoride.

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