Jianzhan with silver hair and silver drops and its firing method

Abstract

The invention discloses a Jian tea bowl with silver hair and silver drops and a firing method thereof. The Jian tea bowl comprises a body and a glaze; the body is made of the following components by weight: 8 parts of red mud and 2 parts of kaolin. The glaze comprises an inner glaze and an outer glaze; the inner glaze is applied to the inside of the body, and the outer glaze is applied to the outside of the body; the inner glaze is made of the following components by weight: 7 parts of glaze ore, 1 part of inner glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water; the outer glaze is made of the following components by weight: 7 parts of glaze ore, 1 part of outer glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water. The Jian tea bowl prepared by the invention has oil droplets on a black bottom inside the bowl, and hair silk on a black bottom outside the bowl, the bottom color is black oil, and the oil droplets and hair silk are silvery and bright. The oil droplets are sparse and dense, the hair silk is uniform, the inner droplets and the outer hair silk, and the oil droplets and hair silk are presented on the same Jian tea bowl, which is very novel.

Description

Technical Field

[0001] The present invention relates to the technical field of porcelain, in particular to a Jian ware and a firing method thereof. Background Art

[0002] Jianzhan, a representative of black porcelain, is known as the "black pearl" of the porcelain crown. One of the eight famous porcelains of the Song Dynasty, it is named after Jian'an County, Jianzhou Prefecture, where it was produced. It was the imperial tea set of the Song Dynasty and continues to attract the attention of numerous consumers and ceramic collectors both domestically and internationally.

[0003] The main types of Jianzhan are rabbit-hair teacups and oil-drop teacups. The currently reported methods for preparing Jianzhan have the following limitations: first, the selection of formula and temperature control are unclear, resulting in a low yield rate; second, the glaze patterns and colors of Jianzhan are ordinary, and the innovation is relatively low. Summary of the Invention

[0004] The purpose of the present invention is to provide a silver-hair and silver-drop Jian ware and a firing method thereof. The Jian ware obtained by the firing method is beautiful and novel, and has a high yield.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] Silver-hair and silver-drip Jianzhan, which includes a body and glaze;

[0007] The green body is made of the following components in weight proportion: 8 parts of red mud and 2 parts of kaolin.

[0008] The glaze includes an inner glaze and an outer glaze; the inner glaze is applied to the inside of the body, and the outer glaze is applied to the outside of the body;

[0009] The inner glaze is made of the following components in weight proportions: 7 parts of glaze ore, 1 part of inner glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water;

[0010] The inner glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 0.9-1.2:1;

[0011] The outer glaze is made of the following components in weight proportions: 7 parts of glaze ore, 1 part of outer glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water;

[0012] The outer glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 2.8-3.1:1;

[0013] Rice husk ash can greatly enhance the fluidity of the glaze. The proportion of rice husk ash in the outer glaze wood ash is larger than that in the inner glaze wood ash. When other components are the same, the glaze fluidity of the outer glaze slurry is greater than that of the inner glaze slurry.

[0014] The red mud and kaolin were both taken from Shuiji Town, Jianyang District, Nanping City, Fujian Province, and the glaze ore was taken from Nanlin Village, Jianyang District, Nanping City, Fujian Province.

[0015] The firing method of the above-mentioned silver-hair silver-drop Jianzhan comprises the following steps:

[0016] (1) preparing a green body, an inner glaze slip, and an outer glaze slip, wherein:

[0017] The green body is prepared by the following method: 8 parts by weight of red mud and 2 parts by weight of kaolin are mixed, crushed, washed, passed through a 60-70 mesh sieve, filtered, aged, and refined, and then thrown into a cup-shaped green body, dried, then trimmed and shaped, dried again, and then bisque-fired to obtain the green body;

[0018] The internal glaze slurry is prepared by the following method: the internal glaze materials are weighed and mixed according to the formula, put into a ball mill for grinding, and passed through an 80-90 mesh sieve to obtain the internal glaze slurry;

[0019] The outer glaze slurry is prepared by the following method: the outer glaze materials are weighed and mixed according to the formula, put into a ball mill for grinding, and passed through an 80-90 mesh sieve to obtain an outer glaze slurry;

[0020] (2) Glazing: first apply the inner glaze slurry, pour the inner glaze slurry into the body, leave it for 2-3 seconds, pour out the inner glaze slurry; then turn the body upside down and soak it in the outer glaze slurry for 2-3 seconds. Do not glaze the outer bottom of the body and let it dry;

[0021] (3) The glazed and air-dried green body is placed in an electric kiln for firing. The firing process is as follows:

[0022] Stage 1: The kiln temperature rises from room temperature to 1288-1292°C over 7.5 hours;

[0023] The second stage: keep the temperature at 1288-1292℃ for 1.8-2.1h, then add oil firewood at 3min intervals for 12 times in total. The amount of oil firewood used each time is 70-75g per 0.25m3 of kiln space.

[0024] At this stage, the inside of the cup is a black background with oil droplets, and the outside of the cup is a black background with fine hairs. The base color is black oil, and the oil droplets and fine hairs are silvery shiny.

[0025] The third stage: After the last oil and firewood are added, the power is turned off and the furnace is shut down, cooled naturally, and then taken out of the kiln.

[0026] Furthermore, the first stage is: the kiln temperature is uniformly increased from room temperature to 400°C over 1 hour; the kiln temperature is uniformly increased from 400°C to 900°C over 2 hours; the kiln temperature is uniformly increased from 900°C to 1288-1292°C over 4.5 hours.

[0027] The temperature rises slowly in the later stage to allow the impurities in the body to be fully dispersed. If the temperature rises too quickly, the glaze will easily jump.

[0028] Furthermore, the glazing thickness of the inner glaze slurry in step (2) is 0.7-0.9 mm, and the glazing thickness of the outer glaze slurry is 0.7-0.9 mm.

[0029] Furthermore, in step (1), the biscuit firing is performed by raising the kiln temperature to 800-850° C. over 6.5 hours, and then stopping the kiln to cool.

[0030] After adopting the above technical solution, the present invention has the following advantages:

[0031] The Jian teacup produced by this invention features a black base with oil droplets on the inside and a black base with fine hairs on the outside. The base color is black oil, while the oil droplets and fine hairs are silvery. The oil droplets are arranged in a well-spaced pattern, and the fine hairs are evenly distributed. The combination of oil droplets on the inside and fine hairs on the outside, creating a unique and innovative look, is a must-have.

[0032] 2. The process flow of the invention, including the formula, temperature curve and firing atmosphere, is clear and easy to control, with good stability. There are basically no defects such as glaze flowing and sticking to the bottom and glaze bubbling, and the yield rate is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a photo illustration of the Jianzhan prepared in Example 1;

[0034] Figure 2 This is an example photo of the exterior of the Jianzhan prepared in Example 1;

[0035] Figure 3 This is an example photo of the interior of the Jianzhan prepared in Example 1. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] In the present invention, unless otherwise specified, all parts and percentages are by weight, and all equipment and raw materials are commercially available or commonly used in the industry. The methods in the following examples are all conventional methods in the art unless otherwise specified.

[0038] Example 1

[0039] The firing method of the silver-hair silver drop Jianzhan comprises the following steps:

[0040] (1) preparing a green body, an inner glaze slip, and an outer glaze slip, wherein:

[0041] The green body is prepared by the following method: 8 parts by weight of red mud and 2 parts by weight of kaolin are mixed, crushed, washed, passed through a 60-mesh sieve, filtered, aged, and refined, and then thrown into a cup-shaped green body, dried, then trimmed and shaped, dried again, and then bisque-fired to obtain the green body;

[0042] The biscuit firing is carried out by raising the kiln temperature to 800° C. over 6.5 hours and then stopping the kiln to cool.

[0043] The inner glaze slurry is prepared by the following method: 7 parts by weight of glaze ore, 1 part by weight of inner glaze plant ash and 0.5 parts by weight of limestone are mixed, 8.5 parts by weight of water are added to obtain an inner glaze, the mixture is put into a ball mill and ground, and the mixture is passed through an 80-90 mesh sieve to obtain an inner glaze slurry;

[0044] The inner glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 1:1;

[0045] The outer glaze slip is prepared by the following method: 7 parts by weight of glaze ore, 1 part by weight of outer glaze plant ash, and 0.5 parts by weight of limestone are mixed, 8.5 parts by weight of water are added to obtain an outer glaze, the mixture is put into a ball mill and ground, and the mixture is passed through an 80-mesh sieve to obtain an outer glaze slip;

[0046] The outer glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 3:1;

[0047] (2) Glazing: first apply the inner glaze slurry, pour the inner glaze slurry into the body, wait for 2-3 seconds, pour out the inner glaze slurry; then turn the body upside down and soak it in the outer glaze slurry for 2-3 seconds. Do not glaze the outer bottom of the body and let it dry; the glazing thickness of the inner glaze slurry is 0.7-0.9 mm, and the glazing thickness of the outer glaze slurry is 0.7-0.9 mm.

[0048] (3) The glazed and air-dried green body is placed in an electric kiln for firing. The firing process is as follows:

[0049] The first stage: the kiln temperature is raised uniformly from room temperature to 400°C over 1 hour; the kiln temperature is raised uniformly from 400°C to 900°C over another 2 hours; the kiln temperature is raised uniformly from 900°C to 1290°C over another 4.5 hours;

[0050] The second stage: After keeping the temperature at 1290℃ for 2 hours, add oil firewood in the keeping state, once every 3 minutes, for a total of 12 times, and the amount of oil firewood used each time is 70g per 0.25 cubic meter of kiln space;

[0051] The third stage: After the last oil and firewood are added, the power is turned off and the furnace is shut down, cooled naturally, and then taken out of the kiln.

[0052] Example 2

[0053] The firing method of the silver-hair silver drop Jianzhan comprises the following steps:

[0054] (1) preparing a green body, an inner glaze slip, and an outer glaze slip, wherein:

[0055] The green body is prepared by the following method: 8 parts by weight of red mud and 2 parts by weight of kaolin are mixed, crushed, washed, passed through a 60-mesh sieve, filtered, aged, and refined, and then thrown into a cup-shaped green body, dried, then trimmed and shaped, dried again, and then bisque-fired to obtain the green body;

[0056] The biscuit firing is carried out by raising the kiln temperature to 850° C. over 6.5 hours and then stopping the kiln to cool.

[0057] The inner glaze slurry is prepared by the following method: 7 parts by weight of glaze ore, 1 part by weight of inner glaze plant ash and 0.5 parts by weight of limestone are mixed, 8.5 parts by weight of water are added to obtain an inner glaze, the mixture is put into a ball mill and ground, and the mixture is passed through an 80-90 mesh sieve to obtain an inner glaze slurry;

[0058] The inner glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 0.9:1;

[0059] The outer glaze slip is prepared by the following method: 7 parts by weight of glaze ore, 1 part by weight of outer glaze plant ash, and 0.5 parts by weight of limestone are mixed, 8.5 parts by weight of water are added to obtain an outer glaze, the mixture is put into a ball mill and ground, and the mixture is passed through an 80-mesh sieve to obtain an outer glaze slip;

[0060] The outer glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 3.1:1;

[0061] (2) Glazing: first apply the inner glaze slurry, pour the inner glaze slurry into the body, wait for 2-3 seconds, pour out the inner glaze slurry; then turn the body upside down and soak it in the outer glaze slurry for 2-3 seconds. Do not glaze the outer bottom of the body and let it dry; the glazing thickness of the inner glaze slurry is 0.7-0.9 mm, and the glazing thickness of the outer glaze slurry is 0.7-0.9 mm.

[0062] (3) The glazed and air-dried green body is placed in an electric kiln for firing. The firing process is as follows:

[0063] The first stage: the kiln temperature is raised uniformly from room temperature to 400°C over 1 hour; the kiln temperature is raised uniformly from 400°C to 900°C over another 2 hours; the kiln temperature is raised uniformly from 900°C to 1288°C over another 4.5 hours;

[0064] The second stage: After keeping at 1288℃ for 2.1h, add oil firewood in the keeping state, once every 3 minutes, for a total of 12 times, and the amount of oil firewood used each time is 72g per 0.25 cubic meter of kiln space;

[0065] The third stage: After the last oil and firewood are added, the power is turned off and the furnace is shut down, cooled naturally, and then taken out of the kiln.

[0066] Example 3

[0067] The firing method of the silver-hair silver drop Jianzhan comprises the following steps:

[0068] (1) preparing a green body, an inner glaze slip, and an outer glaze slip, wherein:

[0069] The green body is prepared by the following method: 8 parts by weight of red mud and 2 parts by weight of kaolin are mixed, crushed, washed, passed through a 70-mesh sieve, filtered, aged, and refined, and then thrown into a cup-shaped green body, dried, then trimmed and shaped, dried again, and then bisque-fired to obtain the green body;

[0070] The biscuit firing is carried out by raising the kiln temperature to 800° C. over 6.5 hours and then stopping the kiln to cool.

[0071] The inner glaze slurry is prepared by the following method: 7 parts by weight of glaze ore, 1 part by weight of inner glaze plant ash and 0.5 parts by weight of limestone are mixed, 9 parts by weight of water are added to obtain an inner glaze, the mixture is put into a ball mill and ground, and the mixture is passed through an 80-90 mesh sieve to obtain an inner glaze slurry;

[0072] The inner glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 1.2:1;

[0073] The outer glaze slip is prepared by the following method: 7 parts by weight of glaze ore, 1 part by weight of outer glaze plant ash and 0.5 parts by weight of limestone are mixed, 9 parts by weight of water are added to obtain an outer glaze, the mixture is put into a ball mill and ground, and passed through a 90-mesh sieve to obtain an outer glaze slip;

[0074] The outer glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 2.8:1;

[0075] (2) Glazing: first apply the inner glaze slurry, pour the inner glaze slurry into the body, wait for 2-3 seconds, pour out the inner glaze slurry; then turn the body upside down and soak it in the outer glaze slurry for 2-3 seconds. Do not glaze the outer bottom of the body and let it dry; the glazing thickness of the inner glaze slurry is 0.7-0.9 mm, and the glazing thickness of the outer glaze slurry is 0.7-0.9 mm.

[0076] (3) The glazed and air-dried green body is placed in an electric kiln for firing. The firing process is as follows:

[0077] The first stage: the kiln temperature is raised uniformly from room temperature to 400°C over 1 hour; the kiln temperature is raised uniformly from 400°C to 900°C over another 2 hours; the kiln temperature is raised uniformly from 900°C to 1292°C over another 4.5 hours;

[0078] The second stage: After keeping at 1292℃ for 1.8 hours, add oil firewood in the keeping state, once every 3 minutes, for a total of 12 times, and the amount of oil firewood used each time is 75g per 0.25 cubic meter of kiln space;

[0079] The third stage: After the last oil and firewood are added, the power is turned off and the furnace is shut down, cooled naturally, and then taken out of the kiln.

[0080] In the above Examples 1, 2 and 3, the red mud and kaolin were both taken from Shuiji Town, Jianyang District, Nanping City, Fujian Province, and the glaze ore was taken from Nanlin Village, Jianyang District, Nanping City, Fujian Province.

[0081] The glaze stone contains the following components by weight: SiO2 60-65%, Al2O3 18-20%, Fe2O3 6-9%, and the rest are trace elements.

[0082] Examples 1, 2, and 3 were fired in a kiln with a 0.25 cubic meter internal volume. A total of eight Jianzhan pieces were fired in the kilns of Examples 1 and 2, and seven good-quality Jianzhan pieces were obtained after firing, for a yield rate of 87.5%. A total of eight Jianzhan pieces were fired in the kiln of Example 3, and six good-quality Jianzhan pieces were obtained after firing, for a yield rate of 75%.

[0083] refer to Figure 1 、 Figure 2 、 Figure 3 The Jian ware obtained in Example 1 has a black base with oil droplets inside and a black base with fine hairs outside. The base color is black oil, and the oil droplets and fine hairs are silvery. The oil droplets are well-spaced, the fine hairs are evenly distributed, with oil droplets inside and fine hairs outside. The combination of oil droplets and fine hairs on the same Jian ware is very innovative.

[0084] The properties of Jianzhan prepared in Examples 2 and 3 are basically the same as those of Jianzhan prepared in Example 1. The results show that the firing method of the present invention has a high yield of silver-hair-silver-drop Jianzhan, and the method has good repeatability, strong stability, and is easy to scale production.

[0085] Jianzhan is very sensitive to the preparation process parameters. A very small change in the process steps or process parameters will have a great adverse effect on the appearance and other characteristics of the final Jianzhan product, and may even lead to the failure of Jianzhan preparation. In the process of preparing the Yinhao Yindi Jianzhan, the inventor went through a lot of experimental screening and optimization, such as the composition of the body and glaze raw materials, the firing curve during the roasting process, the amount of oil and firewood input, the timing of input, etc., before preparing the beautiful Yinhao Yindi Jianzhan.

[0086] The specific comparison is as follows:

[0087] Comparative Example 1

[0088] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0089] The second stage: After keeping warm at 1290℃ for 2 hours, add oil firewood in the keeping warm state, once every 3 minutes, for a total of 15 times, and the amount of oil firewood used each time is 70g per 0.25 cubic meter of kiln space.

[0090] The Jian ware obtained in this comparative example has a black glaze surface, and the oil droplets and hairs are blurred and unclear, resulting in poor display effect.

[0091] Comparative Example 2

[0092] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0093] The second stage: After keeping warm at 1290℃ for 2 hours, add oil firewood in the keeping warm state, once every 3 minutes, for a total of 10 times, and the amount of oil firewood used each time is 70g per 0.25 cubic meter of kiln space.

[0094] The Jian ware obtained in this comparative example has less shiny silvery oil droplets and fine hairs on the glaze, and is darker in color. At the same time, the number of oil droplets and fine hairs is smaller and their distribution is sparse.

[0095] Comparative Example 3

[0096] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0097] The second stage: After keeping the temperature at 1290℃ for 2 hours, add oil firewood in the keeping temperature state, once every 3 minutes, for a total of 12 times, and the amount of oil firewood used each time is 80g per 0.25 cubic meter of kiln space;

[0098] The Jian ware obtained in this comparative example has many defects such as glaze flowing, glaze sticking to the bottom and bubbles on the glaze surface.

[0099] Comparative Example 4

[0100] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0101] The second stage: After keeping the temperature at 1290℃ for 2 hours, add oil firewood in the keeping state, once every 3 minutes, for a total of 12 times, and the amount of oil firewood used each time is 60g per 0.25 cubic meter of kiln space;

[0102] The Jian ware obtained in this comparative example has a small number of oil droplets and fine hairs on the glaze surface, which are sparsely distributed. At the same time, the oil droplets and fine hairs are a mixture of yellow and red, not silver.

[0103] Comparative Example 5

[0104] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0105] The second stage: After keeping the temperature at 1290℃ for 2 hours, add oil firewood in the keeping state, once every 5 minutes, for a total of 12 times, and the amount of oil firewood used each time is 60g per 0.25 cubic meter of kiln space;

[0106] The Jian ware obtained in this comparative example has a small number of oil droplets and fine hairs on the glaze surface, which are sparsely distributed. At the same time, the oil droplets and fine hairs are yellowish brown, not silver.

[0107] Comparative Example 6

[0108] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0109] The second stage: After keeping the temperature at 1290℃ for 2 hours, add oil firewood in the keeping state, once every 2.5 minutes, for a total of 12 times, and the amount of oil firewood used each time is 60g per 0.25 cubic meter of kiln space;

[0110] The Jian ware obtained in this comparative example has many defects such as bubbles and glaze flowing and sticking to the bottom on the glaze surface.

[0111] Comparative Example 7

[0112] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0113] The second stage: after keeping at 1300℃ for 2 hours, add oil firewood in the keeping state, once every 3 minutes, for a total of 12 times, and the amount of oil firewood used each time is 70g per 0.25 cubic meter of kiln space;

[0114] The Jian ware obtained in this comparative example has many defects such as deformation of the body.

[0115] Comparative Example 8

[0116] The difference between this comparative example and Example 1 is that the second stage of step (3) is specifically:

[0117] The second stage: After keeping the temperature at 1280℃ for 2 hours, add oil firewood at an interval of 3 minutes for a total of 12 times. The amount of oil firewood used each time is 70g per 0.25 cubic meter of kiln space.

[0118] The Jian ware obtained in this comparative example has a small number of oil droplets and hairs on the glaze, which are sparsely distributed.

[0119] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. The firing method of the silver-hair and silver-drop Jianzhan is characterized by: The following steps are involved: (1) preparing a green body, an inner glaze slurry, and an outer glaze slurry, wherein: The green body is made of the following components in weight ratio: 8 parts of red mud and 2 parts of kaolin; The glaze includes an inner glaze and an outer glaze; the inner glaze is applied to the inside of the body, and the outer glaze is applied to the outside of the body; The inner glaze is made of the following components by weight: 7 parts of glaze ore, 1 part of inner glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water; The inner glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 0.9-1.2:1; The external glaze is made of the following components by weight: 7 parts of glaze ore, 1 part of external glaze plant ash, 0.5 parts of limestone and 8.5-9 parts of water; The outer glaze wood ash is a mixture of rice husk ash and chestnut wood ash in a weight ratio of 2.8-3.1:1; The red mud and kaolin were both taken from Shuiji Town, Jianyang District, Nanping City, Fujian Province, and the glaze ore was taken from Nanlin Village, Jianyang District, Nanping City, Fujian Province; The green body is prepared by the following method: 8 parts by weight of red mud and 2 parts by weight of kaolin are mixed, crushed, washed, passed through a 60-70 mesh sieve, filtered, aged, and refined, and then thrown into a cup-shaped green body, dried, and then trimmed and shaped, and dried again and bisque fired to obtain the green body; The internal glaze slurry is prepared by the following method: the internal glaze materials are weighed and mixed according to the formula, put into a ball mill for grinding, and passed through an 80-90 mesh sieve to obtain an internal glaze slurry; The external glaze slurry is prepared by the following method: the external glaze materials are weighed and mixed according to the formula, put into a ball mill for grinding, and passed through a 80-90 mesh sieve to obtain an external glaze slurry; (2) Glazing: first apply the inner glaze slurry, pour the inner glaze slurry into the body, leave it for 2-3 seconds, pour out the inner glaze slurry; then turn the body upside down and soak it in the outer glaze slurry for 2-3 seconds, and do not glaze the outer bottom of the body, and let it dry; (3) The glazed and air-dried green body is placed in an electric kiln for firing. The firing process includes the following steps: Stage 1: The kiln temperature rises from room temperature to 1288-1292℃ after 7.5h; The second stage: After keeping at 1288-1292℃ for 1.8-2.1h, add oil firewood in the keeping state, once every 3min, for a total of 12 times, and the amount of oil firewood used each time is 70-75g per 0.25 cubic meter of kiln space; The third stage: After the last fuel oil is added, the power is turned off and the furnace is shut down, cooled naturally, and then taken out of the kiln.

2. The firing method of the silver-hair and silver-drop Jianzhan according to claim 1, characterized in that: The first stage is: the kiln temperature is uniformly increased from room temperature to 400°C over 1 hour; the kiln temperature is uniformly increased from 400°C to 900°C over 2 hours; the kiln temperature is uniformly increased from 900°C to 1288-1292°C over 4.5 hours.

3. The firing method of the silver-hair and silver-drop Jianzhan according to claim 2, characterized in that: The glazing thickness of the inner glaze slurry in step (3) is 0.7-0.9 mm, and the glazing thickness of the outer glaze slurry is 0.7-0.9 mm.

4. The firing method of the silver-hair and silver-drop Jianzhan according to claim 2, characterized in that: The biscuit firing in step (1) is performed by raising the kiln temperature to 800-850° C. over 6.5 hours, and then stopping the kiln for cooling.

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