Korean blue ceramic glaze capable of being in contact with food and application method of Korean blue ceramic glaze

Abstract

The invention relates to a worship blue ceramic glaze capable of contacting food and an application method thereof, the worship blue ceramic glaze takes natural minerals as raw materials, and comprises the following components in percentage by weight: 18-24% of quartz, 10-14% of Loping glaze mud, 32-36% of potassium feldspar, 8-12% of calcined talc, 10-16% of limestone, 5-8% of zircon sand, 1-2% of zinc oxide and 3-6% of prefabricated frit; the prefabricated frit is prepared from the following raw materials in percentage by weight: 40-50% of blue line stone, 11-16% of apatite, 8-12% of kaolin, 5-8% of rhodobite, 6-10% of borax and 12-16% of potassium carbonate. The worship blue ceramic glaze decoration product capable of being in contact with food is obtained through frit prefabrication, glaze slip preparation, glazing, drying, firing and acetic acid solution soaking. The method is simple in process, low in cost, pure in color development and stable in performance, thereby having a wide application prospect.

Description

Technical Field

[0001] The present invention relates to the technical field of traditional ceramic material manufacturing, and particularly relates to a sacrificial blue ceramic glaze that can come into contact with food and an application method thereof. Background Art

[0002] The sacrificial blue glaze, also known as the ji blue glaze, ji blue glaze, gem blue glaze or sacrificial blue glaze, is one of the traditional precious color glazes in China, and was first created in the Jingdezhen Kiln in the Yuan Dynasty. It is deeply loved by people for its deep and uniform blue color. At the same time, it is an excellent ceramic decoration material with good corrosion resistance and can resist the scouring of strong alkaline washing liquids. In recent years, it has attracted more and more attention and is widely used in the decoration of ordinary daily-use porcelain, especially personalized tableware and tea sets.

[0003] However, when sacrificial blue glaze ceramic products are used as food contact materials, the migration amount of harmful elements in the glaze has become the focus of attention. In traditional preparation methods, cobalt ions are used as colorants, and some other harmful elements to the human body may also be introduced. It is difficult to effectively control their migration amount. If applied to tableware and tea sets, it is easy to cause the migration amount of harmful elements to exceed the standard, which not only does not meet the requirements of national standards, but also harms the health of consumers.

[0004] At present, some domestic researchers are trying to use lead-free and cadmium-free raw materials and adopt a cobalt-free formula to prepare the sacrificial blue glaze. However, most of them are in the laboratory research stage. When applied to mass production, various defects are likely to occur, such as pinholes and uneven glaze flow, which affect the beauty and practicality, and the finished product rate is low. Therefore, it cannot be actually applied. At the same time, there is no report on the migration amount of harmful elements and the factors that can come into contact with food in sacrificial blue glaze ceramic products. Therefore, researching new sacrificial blue glaze ceramics characterized by mass production, high finished product rate, harmless to the human body and the environment, and capable of coming into contact with food has become an urgent task and has important economic and social benefits. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sacrificial blue ceramic glaze that can come into contact with food and an application method thereof, which have a simple preparation process, low cost, pure color development and stable performance.

[0006] The present invention is achieved through the following technical solutions: A sacrificial blue ceramic glaze that can come into contact with food, characterized in that: the sacrificial blue ceramic glaze uses natural minerals as raw materials, and its weight percentage composition is: quartz 18 - 24%, Leping glaze clay 10 - 14%, potassium feldspar 32 - 36%, calcined talc 8 - 12%, limestone 10 - 16%, zircon sand 5 - 8%, zinc oxide 1 - 2%, prefabricated frit 3 - 6%; The raw material weight percentage composition of the prefabricated frit is as follows: andalusite 40-50%, apatite 11-16%, kaolin 8-12%, cobalt spar 5-8%, borax 6-10%, potassium carbonate 12-16%.

[0007] The application method of the above-mentioned sky-blue ceramic glaze that can be in contact with food is characterized by the following steps: Step 1: Weigh the prefabricated frit according to the weight percentage of its formula raw materials, put it into an alumina crucible after sufficient mixing, then place it in a kiln for calcination, take out the melt at high temperature and quickly cool it in cold water, and finally crush, grind and screen the cooled frit to obtain the prefabricated frit for use; Step 2: Weigh the sky-blue ceramic glaze according to the weight percentage of its formula raw materials, put it into a ball mill after sufficient mixing for wet ball milling and screening to obtain the sky-blue ceramic glaze slurry; Step 3: Apply the sky-blue ceramic glaze slurry obtained in Step 2 on the green ceramic body and dry it at a temperature of 100-120°C for 2-4 hours; Step 4: Put the glazed green body after drying in Step 3 into a kiln for high-temperature firing, naturally cool it to room temperature after annealing to obtain a porcelain body decorated with sky-blue ceramic glaze; Step 5: Immerse the porcelain body obtained in Step 4 in a 0.5mol / L acetic acid solution for 18-24h, and then wash it with water to obtain a sky-blue ceramic glaze decorated product that can be in contact with food.

[0008] The calcination temperature in Step 1 is 1350-1400°C and the heat preservation time is 1-2 hours.

[0009] The screening mesh number of the frit in Step 1 is 100-200 meshes and the screen residue is ≤0.05%.

[0010] The wet ball milling process parameters of the sky-blue ceramic glaze in Step 2 are: the weight ratio of raw materials, water and balls is 1:0.8-1:1, and the ball milling time is 8-12 hours.

[0011] The screening mesh number of the sky-blue ceramic glaze in Step 2 is 200-300 meshes and the screen residue is ≤0.05%.

[0012] The sky-blue ceramic glaze slurry in Step 3 is applied by spraying, and the glaze layer thickness is 1-2mm.

[0013] The raw material weight percentage composition of the green ceramic body in Step 3 is: porcelain stone 60-80%, kaolin 20-40%.

[0014] The high-temperature firing regime in the fourth step is as follows: It rises from room temperature to 900 - 1000 °C over 6 - 8 hours, then rises to 1250 - 1300 °C over 4 - 5 hours, holds for 1 - 2 hours, and then anneals to 1050 - 1100 °C, and cools naturally to room temperature.

[0015] The performance parameters of the sacrificial blue ceramic glaze decorated products in the fifth step are as follows: Glossiness ≥ 85; Acid and alkali resistance performance: Grade A; Microwave oven adaptability: Passed; Thermal shock resistance: No breakage after one heat exchange from 160 °C to 20 °C; Migration amount of harmful elements: Lead not detected; Cadmium not detected; Chromium not detected; Nickel not detected; Antimony not detected; Zinc not detected; Arsenic not detected; Cobalt not detected; Barium not detected.

[0016] The beneficial effects of the present invention are as follows: 1. In the present invention, the sacrificial blue ceramic glaze that can be in contact with food is selected from the formula design without elements that are toxic to the human body and the environment. The raw materials use natural minerals and chemical raw materials without elements that are toxic to the human body and the environment, thus preventing the introduction of elements that are toxic to the human body and the environment from the source, avoiding the harm to the human body and the environment during the preparation process. By prefabricating a molten frit from natural minerals such as kyanite and apatite that emit blue color and a small amount of cobalt-containing minerals at high temperature, the migration of cobalt elements can be effectively controlled.

[0017] 2. By the method of prefabricating a color-developing molten frit in the present invention, a variety of natural minerals that emit blue color react at high temperature to form silicate products such as blue spinel. Using this as the color-developing agent for the sacrificial blue can make the color more stable.

[0018] 3. The kyanite introduced into the molten frit of the present invention as the main color-developing agent for the sacrificial blue forms a stable blue color through the crystal field effect during high-temperature firing for the iron (Fe) and titanium (Ti) impurities in it, replacing most of the cobalt elements in the traditional sacrificial blue. This reduces the introduction of cobalt elements in the glaze formula by about 80% compared to the traditional sacrificial blue formula while maintaining the deep sacrificial blue color.

[0019] 4. The Leping glaze clay introduced into the glaze formula of the present invention is a mixture of natural minerals produced in the Leping area of Jingdezhen. It contains relatively low contents of iron oxide and titanium oxide impurities. The glaze clay forms a stable glass network at high temperature, providing a medium for the uniform dispersion of the sacrificial blue molten frit prepared from kyanite. At the same time, it makes the glaze flow moderately during melting to form a smooth and dense glaze surface, making the color development of the sacrificial blue glaze more uniform. The grayish-white color of the glaze clay itself can neutralize the cold tone of the sacrificial blue molten frit prepared from kyanite, making the sacrificial blue color of the present invention closer to the deep sense of the traditional sacrificial blue.

[0020] 5. By immersing the fired ceramic products in acetic acid solution, the present invention can dissolve the residual harmful elements in the blue ceramic glaze, further reducing the migration of harmful elements in ceramic products that is concerned internationally. Finally, the migration amount of harmful elements in the blue ceramic glaze that can contact food does not reach the detection limit.

[0021] The blue ceramic glaze prepared by the present invention has a deep and uniform color, with good artistic effects and ornamental value. At the same time, the preparation method has simple process and is easy to control, suitable for large-scale industrial production, and has broad market prospects. Detailed implementation mode

[0022] To further elaborate the present invention, the technical means and effects adopted to achieve the predetermined invention purpose, the present invention will be described in detail below in combination with preferred embodiments.

[0023] Example 1 A blue ceramic glaze that can contact food, the blue ceramic glaze uses natural minerals as raw materials, and its weight percentage composition is: quartz 20%, Leping glaze mud 14%, potassium feldspar 32%, calcined talc 12%, limestone 10%, zircon sand 6%, zinc oxide 1%, prefabricated frit 5%; The raw material weight percentage composition of the prefabricated frit is: sillimanite 48%, apatite 15%, kaolin 9%, cobalt ore 6%, borax 10%, potassium carbonate 12%.

[0024] The application method of the above blue ceramic glaze that can contact food is as follows: Step 1: Weigh the prefabricated frit according to the weight percentage of its formula raw materials, fully mix it and put it into an alumina crucible, then place it in a kiln for calcination, take out the melt at high temperature and quickly cool it in cold water, and finally crush, grind and screen the cooled frit to obtain the prefabricated frit for use; Step 2: Weigh the blue ceramic glaze according to the weight percentage of its formula raw materials, fully mix it and put it into a ball mill for wet ball milling and screening to obtain blue ceramic glaze slurry; Step 3: Apply the blue ceramic glaze slurry obtained in Step 2 on the green ceramic body and dry it at 100°C for 4 hours; Step 4: Put the glazed body dried in Step 3 into a kiln for high-temperature firing, naturally cool it to room temperature after annealing to obtain a porcelain body decorated with blue ceramic glaze; Step 5: Immerse the porcelain body prepared in Step 4 in 0.5 mol / L acetic acid solution for 24 h, and then wash it with water to obtain a blue ceramic glaze decorated product that can contact food.

[0025] The calcination temperature in Step 1 is 1350°C and the heat preservation time is 1.5 hours.

[0026] In Step 1, the frit is sieved through 200 meshes, and the residue is 0.04%.

[0027] In Step 2, the wet ball milling process parameters of the sacrificial blue ceramic glaze are as follows: the weight ratio of raw materials, water, and balls is 1:0.9:1, and the ball milling time is 10 hours.

[0028] In Step 2, the sacrificial blue ceramic glaze is sieved through 250 meshes, and the residue is 0.03%.

[0029] In Step 3, the sacrificial blue ceramic glaze slurry is applied by spraying, and the glaze layer thickness is 1.5 mm.

[0030] In Step 3, the raw material weight percentage composition of the ceramic green body is: 70% porcelain stone and 30% kaolin.

[0031] In Step 4, the high-temperature firing regime is as follows: it takes 6 hours to rise from room temperature to 900 °C, then another 5 hours to rise to 1280 °C, hold for 1 hour, then anneal to 1100 °C, and cool naturally to room temperature.

[0032] In Step 5, the performance parameters of the sacrificial blue ceramic glaze decorated product are as follows: glossiness 93; acid and alkali resistance: Grade A; microwave oven adaptability: passed; thermal shock resistance: no damage after one heat exchange from 160 °C to 20 °C; migration amount of harmful elements: lead not detected; cadmium not detected; chromium not detected; nickel not detected; antimony not detected; zinc not detected; arsenic not detected; cobalt not detected; barium not detected.

[0033] Example 2 A sacrificial blue ceramic glaze that can be in contact with food, the sacrificial blue ceramic glaze uses natural minerals as raw materials, and its weight percentage composition is: quartz 18%, Leping glaze clay 11%, potassium feldspar 36%, calcined talc 10%, limestone 11%, zircon sand 6%, zinc oxide 2%, prefabricated frit 6%; The raw material weight percentage composition of the prefabricated frit is: sillimanite 40%, apatite 16%, kaolin 12%, cobalt bloom 8%, borax 9%, potassium carbonate 15%.

[0034] The application method of the above sacrificial blue ceramic glaze that can be in contact with food is as follows: Step 1: Weigh the prefabricated frit according to the weight percentage of its formula raw materials, fully mix it and put it into an alumina crucible, then place it in a kiln for calcination, then take out the melt at high temperature and quickly cool it in cold water, and finally crush, grind, and sieve the cooled frit to obtain the prefabricated frit for use; Step 2: weighing the sacrificial blue ceramic glaze according to the weight percentage of its formula raw materials, putting it into a ball mill after fully mixing, and performing wet ball milling and sieving to obtain the sacrificial blue ceramic glaze slurry; Step 3: Apply the sacrificial blue ceramic glaze slurry obtained in step 2 to the ceramic green body and dry it at 120° C. for 2 hours; Step 4: placing the dried glaze blank in step 3 into a kiln for high-temperature firing, and naturally cooling to room temperature after annealing to obtain a porcelain body decorated with sacrificial blue ceramic glaze; Step 5: Soak the porcelain body obtained in step 4 in a 0.5 mol / L acetic acid solution for 20 hours, and then wash it with water to obtain a sacrificial blue ceramic glaze decorative product that can come into contact with food.

[0035] The calcination temperature in the step 1 is 1400° C. and the temperature is kept for 1 hour.

[0036] The mesh number of the sieving block in the step 1 is 100 meshes, and the sieve residue is 0.02%.

[0037] The wet ball milling process parameters of the sacrificial blue ceramic glaze in step 2 are: the weight ratio of raw material, water and ball is 1:0.8:1, and the ball milling time is 12 hours.

[0038] In the step 2, the sieve mesh number of the sacrificial blue ceramic glaze is 300 meshes, and the sieve residue is 0.05%.

[0039] In the step three, the sacrificial blue ceramic glaze slurry is glazed by spraying, and the thickness of the glaze layer is 1 mm.

[0040] The raw materials of the ceramic green body in step 3 are composed of 60% porcelain stone and 40% kaolin in weight percentage.

[0041] The high temperature firing system in step 4 is as follows: the temperature is raised from room temperature to 950° C. over 7 hours, then raised to 1300° C. over 4.5 hours, annealed to 1050° C. after keeping at this temperature for 1 hour, and then cooled naturally to room temperature.

[0042] The performance parameters of the sacrificial blue ceramic glaze decorative products in the step five are: glossiness 92; acid and alkali resistance: Grade A; microwave oven adaptability: passed; thermal shock resistance: no damage after one heat exchange from 160°C to 20°C; migration of harmful elements: lead not detected; cadmium not detected; chromium not detected; nickel not detected; antimony not detected; zinc not detected; arsenic not detected; cobalt not detected; barium not detected.

[0043] Example 3

[0044] A food-contactable sacrificial blue ceramic glaze, the sacrificial blue ceramic glaze is made of natural minerals as raw materials, and its weight percentage composition is: quartz 19%, Leping glaze mud 12%, potassium feldspar 33%, calcined talc 10%, limestone 16%, zircon sand 5%, zinc oxide 1%, prefabricated frit 4%; The raw materials of the prefabricated frit are composed of 45% bluestone, 16% apatite, 8% kaolin, 7% cobaltite, 10% borax and 14% potassium carbonate in weight percentage.

[0045] The application method of the above-mentioned food-contactable sacrificial blue ceramic glaze is in accordance with the following steps: Step 1: weigh the prefabricated frit according to the weight percentage of its formula raw materials, put it into an alumina crucible after fully mixing, and then place it in a kiln for calcination, then take out the molten material at high temperature and place it in cold water for rapid cooling, and finally crush, grind and sieve the cooled frit to obtain the prefabricated frit for standby use; Step 2: weighing the sacrificial blue ceramic glaze according to the weight percentage of its formula raw materials, putting it into a ball mill after fully mixing, and performing wet ball milling and sieving to obtain the sacrificial blue ceramic glaze slurry; Step 3: Apply the sacrificial blue ceramic glaze slurry obtained in step 2 to the ceramic green body and dry it at 110° C. for 3 hours; Step 4: placing the dried glaze blank in step 3 into a kiln for high-temperature firing, and naturally cooling to room temperature after annealing to obtain a porcelain body decorated with sacrificial blue ceramic glaze; Step 5: Soak the porcelain body obtained in step 4 in a 0.5 mol / L acetic acid solution for 18 hours, and then wash it with water to obtain a sacrificial blue ceramic glaze decorative product that can come into contact with food.

[0046] The calcination temperature in the step 1 is 1350° C. and the temperature is kept for 2 hours.

[0047] The mesh number of the sintered block in the step 1 is 150 meshes, and the residue is 0.04%.

[0048] The wet ball milling process parameters of the sacrificial blue ceramic glaze in step 2 are: the weight ratio of raw material, water and ball is 1:1:1, and the ball milling time is 8 hours.

[0049] In the step 2, the sieve mesh number of the sacrificial blue ceramic glaze is 200 meshes, and the sieve residue is 0.02%.

[0050] In the step three, the sacrificial blue ceramic glaze slurry is glazed by spraying, and the thickness of the glaze layer is 2 mm.

[0051] The raw materials of the ceramic green body in step 3 are composed of 80% porcelain stone and 20% kaolin in weight percentage.

[0052] The high temperature firing system in step 4 is as follows: heating from room temperature to 1000° C. over 8 hours, then heating to 1250° C. over 4 hours, annealing to 1080° C. after keeping at this temperature for 2 hours, and cooling naturally to room temperature.

[0053] The performance parameters of the blue glaze ceramic glaze decoration product in Step 5 are as follows: glossiness 85; acid and alkali resistance: Grade A; microwave oven adaptability: passed; thermal shock resistance: no breakage after one heat exchange from 160°C to 20°C; migration amount of harmful elements: lead not detected; cadmium not detected; chromium not detected; nickel not detected; antimony not detected; zinc not detected; arsenic not detected; cobalt not detected; barium not detected.

[0054] Example 4

[0055] A blue glaze ceramic glaze that can be in contact with food, the blue glaze ceramic glaze uses natural minerals as raw materials, and its weight percentage composition is: quartz 24%, Leping glaze clay 10%, potassium feldspar 34%, calcined talc 8%, limestone 11.5%, zircon sand 8%, zinc oxide 1.5%, prefabricated frit 3%; The raw material weight percentage composition of the prefabricated frit is: sillimanite 50%, apatite 11%, kaolin 12%, cobalt spar 5%, borax 6%, potassium carbonate 16%.

[0056] The application method of the above blue glaze ceramic glaze that can be in contact with food is as follows: Step 1: Weigh the prefabricated frit according to the weight percentage of its formula raw materials, fully mix it and put it into an alumina crucible, then place it in a kiln for calcination, then take out the melt at high temperature and quickly cool it in cold water, and finally break, grind and sieve the cooled frit to obtain the prefabricated frit for use; Step 2: Weigh the blue glaze ceramic glaze according to the weight percentage of its formula raw materials, fully mix it and put it into a ball mill for wet ball milling and sieving to obtain the blue glaze ceramic glaze slurry; Step 3: Apply the blue glaze ceramic glaze slurry obtained in Step 2 on the green ceramic body and dry it at 100°C for 4 hours; Step 4: Put the glazed green body dried in Step 3 into a kiln for high-temperature firing, naturally cool it to room temperature after annealing to obtain a porcelain body decorated with blue glaze ceramic glaze; Step 5: Immerse the porcelain body prepared in Step 4 in a 0.5 mol / L acetic acid solution for 20 h, and then wash it with water to obtain a blue glaze ceramic glaze decoration product that can be in contact with food.

[0057] The calcination temperature in Step 1 is 1380°C and the holding time is 1 hour.

[0058] The sieve mesh number of the frit in Step 1 is 200 mesh and the sieve residue is 0.03%.

[0059] The parameters of the wet ball milling process of the blue glaze ceramic glaze in Step 2 are: the weight ratio of raw materials, water and balls is 1:1:1, and the ball milling time is 10 hours.

[0060] In the second step, the sieve mesh number of the imperial blue ceramic glaze is 300 meshes, and the sieve residue is 0.04%.

[0061] In the third step, the imperial blue ceramic glaze slurry is applied by spraying, and the thickness of the glaze layer is 2 mm.

[0062] In the third step, the raw material weight percentage composition of the green ceramic body is: 65% of feldspar porcelain and 35% of kaolin.

[0063] In the fourth step, the high-temperature firing regime is as follows: it takes 7 hours to rise from room temperature to 900 °C, then another 5 hours to rise to 1290 °C, hold for 1.5 hours and then anneal to 1100 °C, and then cool naturally to room temperature.

[0064] In the fifth step, the performance parameters of the imperial blue ceramic glaze decorated product are: glossiness 94; acid and alkali resistance performance: grade A; microwave oven adaptability: passed; thermal shock resistance: no damage after one heat exchange from 160 °C to 20 °C; migration amount of harmful elements: lead not detected; cadmium not detected; chromium not detected; nickel not detected; antimony not detected; zinc not detected; arsenic not detected; cobalt not detected; barium not detected.

Claims

1. A sacrificial blue ceramic glaze that can come into contact with food, characterized in that: The jilin ceramic glaze is made of natural minerals, and its weight percentage composition is: quartz 18-24%, Leping glaze mud 10-14%, potassium feldspar 32-36%, calcined talc 8-12%, limestone 10-16%, zircon sand 5-8%, zinc oxide 1-2%, prefabricated frit 3-6%; The raw materials of the prefabricated frit are composed of 40-50% blue line stone, 11-16% apatite, 8-12% kaolin, 5-8% cobaltite, 6-10% borax and 12-16% potassium carbonate in weight percentage.

2. The application method of the blue porcelain glaze that can come into contact with food according to claim 1, characterized in that Follow these steps: Step 1: weigh the prefabricated frit according to the weight percentage of its formula raw materials, put it into an alumina crucible after fully mixing, and then place it in a kiln for calcination, then take out the molten material at high temperature and place it in cold water for rapid cooling, and finally crush, grind and sieve the cooled frit to obtain the prefabricated frit for standby use; Step 2: weighing the sacrificial blue ceramic glaze according to the weight percentage of its formula raw materials, putting it into a ball mill after fully mixing, and performing wet ball milling and sieving to obtain the sacrificial blue ceramic glaze slurry; Step 3: applying the sacrificial blue ceramic glaze slurry obtained in step 2 to the ceramic green body, and drying at a temperature of 100-120° C. for 2-4 hours; Step 4: placing the dried glaze blank in step 3 into a kiln for high-temperature firing, and naturally cooling to room temperature after annealing to obtain a porcelain body decorated with sacrificial blue ceramic glaze; Step 5: Soak the porcelain body obtained in step 4 in a 0.5 mol / L acetic acid solution for 18 to 24 hours, and then wash it with water to obtain a sacrificial blue ceramic glaze decorative product that can come into contact with food.

3. The application method according to claim 2, wherein: The calcination temperature in the step 1 is 1350-1400° C. and the temperature is kept for 1-2 hours.

4. The application method according to claim 2, wherein: The mesh number of the sieving block in the step 1 is 100-200 meshes, and the sieve residue is ≤0.05%.

5. The application method according to claim 2, characterized in that: The wet ball milling process parameters of the sacrificial blue ceramic glaze in step 2 are: the weight ratio of raw material, water and ball is 1:0.8 to 1:1, and the ball milling time is 8 to 12 hours.

6. The application method according to claim 2, wherein: In the step 2, the sieve mesh number of the sacrificial blue ceramic glaze is 200-300 meshes, and the sieve residue is ≤0.05%.

7. The application method according to claim 2, characterized in that: In the step three, the sacrificial blue ceramic glaze slurry is glazed by spraying, and the thickness of the glaze layer is 1 to 2 mm.

8. The application method according to claim 2, wherein: The raw materials of the ceramic green body in step 3 are composed of 60-80% porcelain stone and 20-40% kaolin in weight percentage.

9. The application method according to claim 2, characterized in that: The high temperature firing system in step 4 is as follows: the temperature is raised from room temperature to 900-1000° C. over 6-8 hours, then raised to 1250-1300° C. over 4-5 hours, annealed to 1050-1100° C. after keeping at this temperature for 1-2 hours, and then cooled naturally to room temperature.

10. The application method according to claim 2, wherein: The performance parameters of the sacrificial blue ceramic glaze decorative product in step 5 are: glossiness ≥ 85; acid and alkali resistance: Grade A; microwave oven adaptability: passed; Thermal shock resistance: No damage after one heat exchange from 160℃ to 20℃; Migration of harmful elements: No lead detected; No cadmium detected; No chromium detected; No nickel detected; Antimony was not detected; Zinc was not detected; Arsenic was not detected; Cobalt was not detected; Barium was not detected.