Jianzhan cup and preparation process thereof

Abstract

The invention relates to a Jianzhan cup and a preparation process thereof. Specifically, the invention provides a preparation process of a Jianzhan cup, which comprises the following steps: throwing and fettling a green body raw material, and biscuiting to obtain a green body; the glaze slip is applied to the green body, the glazed green body is put into an electric kiln to be roasted, and the Jianzhan cup is obtained. The glaze surface of the Jianzhan prepared by the method has ice cracks, is similar to transparent ice, has strong three-dimensional sense, is beautiful, has exquisite effect, has the feeling of natural and tangible skill, and shows infinite natural beauty, the ice cracks are extremely typical incomplete beauty from decaying to magical, the glaze surface is smooth like a mirror surface, the glaze surface contains tea dust glaze, and the glaze surface has the advantages of being bright in color, bright in color, bright in color and the like. The tea dust glaze is primitive, simple, clear, delicate, not popular, colorful, beautiful as jade and durable in taste, the glaze surface is fine and smooth in texture, novel in shape, exquisite in process and bright in glaze color, and yellow-green and white are alternated, so that the tea dust glaze has beautiful appearance, collection and economic value.

Description

Technical Field

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

[0002] Jianzhan is a brilliant chapter of black porcelain in the history of ceramics and is known as the black pearl in the crown of porcelain. Jianzhan is famous for its outstanding artistic level and is a shining pearl in the history of ceramics.

[0003] The glaze color of Jianzhan is unpredictable and colorful. With the continuous improvement of artistic level, the demand for Jianzhan with beautiful colors and appearance is getting higher and higher. However, Jianzhan is difficult to fire and the firing process is difficult to master. Improper process selection often leads to many defects, such as bubbling, deformation, body cracking, glaze sticking to the bottom, plaques, etc., which reduces the artistic, collection and economic value of Jianzhan. Therefore, how to fire a Jianzhan with a beautiful appearance to improve the appreciation, art and collection value of Jianzhan has become a hot topic in the current porcelain industry.

[0004] Therefore, there is a need in the art to develop a Jian ware with a beautiful appearance. Summary of the invention

[0005] The object of the present invention is to provide a Jianzhan with beautiful appearance.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The first aspect of the present invention provides a preparation process of Jianzhan, the process comprising the following steps:

[0008] (1) 0.2-0.5 parts by weight of laterite and 4.5-5.5 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 80-120 mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, biscuit-fired at 850-890° C. for 5.5-6.5 hours, cooled and taken out to obtain a green body;

[0009] (2) burning bamboo and collecting ashes to obtain plant ash;

[0010] (3) Preparation of bottom glaze slurry and coating glaze slurry:

[0011] Preparation of bottom glaze slurry: grind 6.0-7.0 parts by weight of glaze ore, 0.3-0.7 parts by weight of potassium feldspar, 1.0-1.4 parts by weight of limestone, 0.1-0.4 parts by weight of the plant ash prepared in step (2) and 7.5-8.5 parts by weight of water, and pass through a 80-120 mesh sieve to obtain a bottom glaze slurry;

[0012] Preparation of coating glaze slurry: 1.3-1.7 parts by weight of albite, 0.3-0.7 parts by weight of limestone, 0.6-1.0 parts by weight of calcite, 0.05-0.15 parts by weight of the plant ash prepared in step (2) and 2.5-3.5 parts by weight of water are ground and passed through a 80-120 mesh sieve to obtain a coating glaze slurry;

[0013] (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.6-1.0 mm and a coating glaze slurry glazing thickness of 0.3-0.7 mm;

[0014] (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0015] The furnace temperature is raised from room temperature to 1030-1070℃ at a rate of 380-420℃ / h. After being kept at 1030-1070℃ for 15-25min, the furnace temperature is raised from 1030-1070℃ to 1360-1400℃ at a rate of 75-85℃ / h. In the heat preservation state, oil firewood is added into the electric kiln furnace every 8-12min, for a total of 3 times. The amount of oil firewood added each time is 830-870g per cubic meter of electric kiln furnace space. After the last addition of oil firewood, it is kept at 1360-1400℃ for 55-65min, and then the furnace temperature is lowered from 1360-1400℃ to 1190℃ at a rate of 160-200℃ / h. -1230℃, add oil firewood into the electric kiln under insulation state, once every 4-6 minutes, for a total of 2 times, the amount of oil firewood added each time is 280-320g per cubic meter of electric kiln space, and after the last addition of oil firewood, keep warm at 1190-1230℃ for 25-35min, then increase the furnace temperature from 1190-1230℃ to 1300-1340℃ at a rate of 100-140℃ / h, after keeping warm at 1300-1340℃ for 18-22min, then cool down the furnace temperature from 1300-1340℃ to 180-220℃ at a rate of 140-180℃ / h, stop the furnace, open the furnace door, cool the furnace temperature to room temperature, and obtain Jianzhan.

[0016] Preferably, the process comprises the following steps:

[0017] (1) 0.2-0.4 parts by weight of laterite and 4.8-5.2 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 80-120 mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, biscuit-fired at 860-880° C. for 5.8-6.2 hours, cooled and taken out to obtain a green body;

[0018] (2) burning bamboo and collecting ashes to obtain plant ash;

[0019] (3) Preparation of bottom glaze slurry and coating glaze slurry:

[0020] Preparation of bottom glaze slurry: grind 6.3-6.7 parts by weight of glaze ore, 0.4-0.6 parts by weight of potassium feldspar, 1.1-1.3 parts by weight of limestone, 0.1-0.3 parts by weight of the plant ash prepared in step (2) and 7.8-8.2 parts by weight of water, and pass through a 80-120 mesh sieve to obtain a bottom glaze slurry;

[0021] Preparation of coating glaze slurry: 1.4-1.6 parts by weight of albite, 0.4-0.6 parts by weight of limestone, 0.7-0.9 parts by weight of calcite, 0.08-0.12 parts by weight of the plant ash prepared in step (2) and 2.8-3.2 parts by weight of water are ground and passed through a 80-120 mesh sieve to obtain a coating glaze slurry;

[0022] (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.7-0.9 mm and a coating glaze slurry glazing thickness of 0.4-0.6 mm;

[0023] (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0024] The furnace temperature is raised from room temperature to 1040-1060℃ at a rate of 390-410℃ / h. After being kept at 1040-1060℃ for 18-22min, the furnace temperature is raised from 1040-1060℃ to 1370-1390℃ at a rate of 75-85℃ / h. In the heat preservation state, oil firewood is added into the electric kiln furnace every 9-11min, for a total of 3 times. The amount of oil firewood added each time is 840-860g per cubic meter of electric kiln furnace space. After the last addition of oil firewood, it is kept at 1370-1390℃ for 55-65min, and then the furnace temperature is lowered from 1370-1390℃ to 1200-1 The temperature is 220℃, and oil firewood is added into the electric kiln under insulation state, once every 4.8-5.2 minutes, for a total of 2 times. The amount of oil firewood added each time is 290-310g per cubic meter of the electric kiln space. After the last addition of oil firewood, the kiln is kept warm at 1200-1220℃ for 28-32min, and then the furnace temperature is increased from 1200-1220℃ to 1310-1330℃ at a rate of 110-130℃ / h, after being kept at 1310-1330℃ for 18-22min, the furnace temperature is cooled from 1310-1330℃ to 190-210℃ at a rate of 150-170℃ / h, the furnace is stopped, the furnace door is opened, the furnace temperature is cooled to room temperature, and Jianzhan is obtained.

[0025] Preferably, the process comprises the following steps:

[0026] (1) 0.3 parts by weight of laterite and 5.0 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 100-mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, it is bisque-fired at 870° C. for 6 hours, cooled and taken out to obtain a green body;

[0027] (2) burning bamboo and collecting ashes to obtain plant ash;

[0028] (3) Preparation of bottom glaze slurry and coating glaze slurry:

[0029] Preparation of bottom glaze slurry: 6.5 parts by weight of glaze ore, 0.5 parts by weight of potassium feldspar, 1.2 parts by weight of limestone, 0.2 parts by weight of the plant ash prepared in step (2) and 8.0 parts by weight of water are ground and passed through a 100 mesh sieve to obtain a bottom glaze slurry;

[0030] Preparation of coating glaze slurry: 1.5 parts by weight of albite, 0.5 parts by weight of limestone, 0.8 parts by weight of calcite, 0.1 parts by weight of the plant ash prepared in step (2) and 3.0 parts by weight of water are ground and passed through a 100 mesh sieve to obtain a coating glaze slurry;

[0031] (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.8 mm and a coating glaze slurry glazing thickness of 0.5 mm;

[0032] (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0033] The furnace temperature was raised from room temperature to 1050℃ at a rate of 400℃ / h. After being kept at 1050℃ for 20min, the furnace temperature was raised from 1050℃ to 1380℃ at a rate of 80℃ / h. Oil firewood was added into the electric kiln in the heat preservation state, once every 10min, for a total of 3 times. The amount of oil firewood added each time was 850g per cubic meter of the electric kiln space. After the last addition of oil firewood, it was kept at 1380℃ for 60min, and then the furnace temperature was lowered from 1380℃ to 121 at a rate of 180℃ / h. 0℃, add oil firewood into the electric kiln under insulation state, once every 5 minutes, for a total of 2 times, the amount of oil firewood added each time is 300g per cubic meter of the electric kiln space, and after the last addition of oil firewood, keep warm at 1210℃ for 30min, then increase the temperature from 1210℃ to 1320℃ at a rate of 120℃ / h, after keeping warm at 1320℃ for 20min, then decrease the temperature from 1320℃ to 200℃ at a rate of 160℃ / h, stop the furnace, open the furnace door, and cool the furnace temperature to room temperature to obtain Jianzhan.

[0034] In a preferred embodiment of the present invention, the Jianzhan is as shown in the attached specification. Figure 1 shown.

[0035] The second aspect of the present invention provides a Jianzhan, which is prepared by the process described in the first aspect of the present invention.

[0036] In a preferred embodiment of the present invention, the Jianzhan is as shown in the attached specification. Figure 1 shown.

[0037] Within the scope of the present invention, the above-mentioned various technical features of the present invention and the various technical features specifically described below (such as embodiments) can be combined with each other to form a new or preferred technical solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is the Jianzhan prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0039] The present invention develops a preparation process of Jianzhan with beautiful appearance, the process comprising: throwing and trimming a blank raw material, and then bisque firing to obtain a blank; applying glaze slurry to the blank, and placing the glazed blank in an electric kiln for firing to obtain a Jianzhan with beautiful appearance.

[0040] As used herein, the terms "include", "comprises", and "comprising" are used interchangeably, and include not only open definitions, but also semi-closed and closed definitions. In other words, the terms include "consisting of", "consisting essentially of".

[0041] In the present invention, the oilwood is a pine root rich in pine resin and can burn violently.

[0042] As used herein, the term "parts by weight" may be any fixed weight expressed in milligrams, grams or kilograms (such as 1 mg, 1 g or 1 kg, etc.). For example, a combination consisting of 1 part by weight of component a and 9 parts by weight of component b may be a combination of 1 gram of component a + 9 grams of component b, or a combination of 10 grams of component a + 90 grams of component b, etc. In the combination, the percentage content of a component = (the weight part of the component / the sum of the weight parts of all components) × 100%. Therefore, in a composition consisting of 1 part by weight of component a and 9 parts by weight of component b, the content of component a is 10%, and the content of component b is 90%.

[0043] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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.

[0044] In a preferred embodiment of the present invention, a preparation process of Jianzhan is provided, the process comprising the following steps:

[0045] (1) 0.2-0.5 parts by weight of laterite and 4.5-5.5 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 80-120 mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, biscuit-fired at 850-890° C. for 5.5-6.5 hours, cooled and taken out to obtain a green body;

[0046] (2) burning bamboo and collecting ashes to obtain plant ash;

[0047] (3) Preparation of bottom glaze slurry and coating glaze slurry:

[0048] Preparation of bottom glaze slurry: grind 6.0-7.0 parts by weight of glaze ore, 0.3-0.7 parts by weight of potassium feldspar, 1.0-1.4 parts by weight of limestone, 0.1-0.4 parts by weight of the plant ash prepared in step (2) and 7.5-8.5 parts by weight of water, and pass through a 80-120 mesh sieve to obtain a bottom glaze slurry;

[0049] Preparation of coating glaze slurry: 1.3-1.7 parts by weight of albite, 0.3-0.7 parts by weight of limestone, 0.6-1.0 parts by weight of calcite, 0.05-0.15 parts by weight of the plant ash prepared in step (2) and 2.5-3.5 parts by weight of water are ground and passed through a 80-120 mesh sieve to obtain a coating glaze slurry;

[0050] (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.6-1.0 mm and a coating glaze slurry glazing thickness of 0.3-0.7 mm;

[0051] (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0052] The furnace temperature is raised from room temperature to 1030-1070℃ at a rate of 380-420℃ / h. After being kept at 1030-1070℃ for 15-25min, the furnace temperature is raised from 1030-1070℃ to 1360-1400℃ at a rate of 75-85℃ / h. In the heat preservation state, oil firewood is added into the electric kiln furnace every 8-12min, for a total of 3 times. The amount of oil firewood added each time is 830-870g per cubic meter of electric kiln furnace space. After the last addition of oil firewood, it is kept at 1360-1400℃ for 55-65min, and then the furnace temperature is lowered from 1360-1400℃ to 1190℃ at a rate of 160-200℃ / h. -1230℃, add oil firewood into the electric kiln under insulation state, once every 4-6 minutes, for a total of 2 times, the amount of oil firewood added each time is 280-320g per cubic meter of electric kiln space, and after the last addition of oil firewood, keep warm at 1190-1230℃ for 25-35min, then increase the furnace temperature from 1190-1230℃ to 1300-1340℃ at a rate of 100-140℃ / h, after keeping warm at 1300-1340℃ for 18-22min, then cool down the furnace temperature from 1300-1340℃ to 180-220℃ at a rate of 140-180℃ / h, stop the furnace, open the furnace door, cool the furnace temperature to room temperature, and obtain Jianzhan.

[0053] Specifically, the preparation process of Jianzhan described in the present invention is as described above in the first aspect of the present invention.

[0054] Typically, the preparation process of Jianzhan described in the present invention is prepared as described in the method described in specific embodiment 1 of the present invention.

[0055] In a preferred embodiment of the present invention, the Jianzhan of the present invention is as shown in the attached specification. Figure 1 shown.

[0056] The main technical effects of the present invention include:

[0057] The invention develops a preparation process of Jianzhan with beautiful appearance. The prepared Jianzhan glaze has ice cracks, which look like transparent ice and have a strong three-dimensional sense. It is very beautiful when it stretches far away. The effect is exquisite and has a sense of being completely natural and ingenious, showing infinite natural beauty. The ice cracks are a very typical beauty of imperfection that turns decay into magic. The glaze surface is as smooth as a mirror. The glaze surface contains tea-leaf glaze. The tea-leaf glaze is simple and beautiful, delicate but not vulgar, more gorgeous than flowers, beautiful like jade, and intriguing. The glaze surface has fine texture, novel shape, exquisite workmanship, bright glaze color, and alternating yellow-green and white, so it has beautiful appearance, collection and economic value.

[0058] The present invention is further described below in conjunction with specific examples. It should be understood that the following specific examples are based on the technical solution and provide detailed implementation methods and specific operation processes, but the protection scope of the present invention is not limited to these examples.

[0059] Examples and Comparative Examples

[0060] The red clay comes from Shuiji Town, Jianyang District, Nanping City, Fujian Province; the kaolin comes from Shuiji Town, Jianyang District, Nanping City, Fujian Province; and the glaze ore comes from Nanlin Village, Jianyang District, Nanping City, Fujian Province.

[0061] Example 1

[0062] This embodiment 1 provides a Jianzhan, which is prepared by the following process:

[0063] (1) 0.3 parts by weight of laterite and 5.0 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 100-mesh sieve, filtered, refined, and aged to obtain a green body raw material; the green body raw material is drawn and trimmed, bisque-fired at 870° C. for 6 hours, cooled, and taken out to obtain a green body.

[0064] (2) Burn bamboo and collect the ashes to obtain wood ash.

[0065] (3) Preparation of bottom glaze slurry and coating glaze slurry:

[0066] Preparation of bottom glaze slurry: 6.5 parts by weight of glaze ore, 0.5 parts by weight of potassium feldspar, 1.2 parts by weight of limestone, 0.2 parts by weight of the plant ash prepared in step (2) and 8.0 parts by weight of water are put into a grinder and ground, and passed through a 100-mesh sieve to obtain a bottom glaze slurry;

[0067] Preparation of coating glaze slurry: 1.5 parts by weight of albite, 0.5 parts by weight of limestone, 0.8 parts by weight of calcite, 0.1 parts by weight of wood ash prepared in step (2) and 3.0 parts by weight of water are put into a grinder and ground, and passed through a 100-mesh sieve to obtain a coating glaze slurry.

[0068] (4) Apply the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, partially apply the coating glaze slurry prepared in step (3), and dry, to obtain a glazed body with a bottom glaze slurry glazing thickness of 0.8 mm and a coating glaze slurry glazing thickness of 0.5 mm.

[0069] (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0070] The furnace temperature was raised from room temperature to 1050℃ at a rate of 400℃ / h. After being kept at 1050℃ for 20min, the furnace temperature was raised from 1050℃ to 1380℃ at a rate of 80℃ / h. Oil firewood was added into the electric kiln in the heat preservation state, once every 10min, for a total of 3 times. The amount of oil firewood added each time was 850g per cubic meter of the electric kiln space. After the last addition of oil firewood, it was kept at 1380℃ for 60min, and then the furnace temperature was lowered from 1380℃ to 121 at a rate of 180℃ / h. 0℃, add oil firewood into the electric kiln under insulation state, once every 5 minutes, for a total of 2 times, the amount of oil firewood added each time is 300g per cubic meter of the electric kiln space, and after the last addition of oil firewood, keep warm at 1210℃ for 30min, then increase the temperature from 1210℃ to 1320℃ at a rate of 120℃ / h, after keeping warm at 1320℃ for 20min, then decrease the temperature from 1320℃ to 200℃ at a rate of 160℃ / h, stop the furnace, open the furnace door, and cool the furnace temperature to room temperature to obtain Jianzhan.

[0071] Effect evaluation:

[0072] Example 1: Figure 1 As shown, from Figure 1 It can be seen that the glaze surface of the Jianzhan prepared in Example 1 has ice cracks, which are like transparent ice, have a strong three-dimensional sense, and are very beautiful when they are far away. The effect is exquisite and has a sense of being natural and ingenious, showing infinite natural beauty. The ice cracks are a typical incomplete beauty that turns decay into magic. The glaze surface is as smooth as a mirror, and the glaze surface contains tea-leaf glaze, which is simple and beautiful. Tea-leaf glaze is delicate and not vulgar, more gorgeous than flowers, beautiful as jade, and intriguing. The glaze surface is fine in texture, novel in shape, exquisite in craftsmanship, and bright in glaze color, with alternating yellow-green and white. Therefore, the Jianzhan prepared in Example 1 has a beautiful appearance, collection and economic value.

[0073] Comparative Example 1

[0074] The preparation process of Comparative Example 1 is similar to that of Example 1, except that: (5) the glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0075] The furnace temperature is increased from room temperature to 1050℃ at a rate of 400℃ / h. After being kept at 1050℃ for 20min, the furnace temperature is increased from 1050℃ to 1380℃ at a rate of 80℃ / h. Oil firewood is added into the electric kiln while keeping warm, once every 10min, for a total of 3 times. The amount of oil firewood added each time is 850g per cubic meter of the electric kiln space. After the last addition of oil firewood, it is kept at 1380℃ for 60min. Then the furnace temperature is cooled from 1380℃ to 200℃ at a rate of 300℃ / h. The furnace is stopped, the furnace door is opened, and the furnace temperature is cooled to room temperature to obtain Jianzhan.

[0076] Effect evaluation:

[0077] The Jian ware prepared in this comparative example 1 has no ice cracks and tea-leaf glaze.

[0078] Comparative Example 2

[0079] The preparation process of Comparative Example 2 is similar to that of Example 1, except that: (5) the glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows:

[0080] The furnace temperature is increased from room temperature to 1050°C at a rate of 400°C / h. After being kept at 1050°C for 20 minutes, the furnace temperature is increased from 1050°C to 1380°C at a rate of 80°C / h. Oil firewood is added into the electric kiln under the insulation state, once every 10 minutes, for a total of 3 times. The amount of oil firewood added each time is 850g per cubic meter of the electric kiln space. Then the furnace temperature is cooled down from 1380°C to 1210°C at a rate of 180°C / h. Oil firewood is added into the electric kiln under the insulation state, once every 5 minutes, for a total of 2 times. The amount of oil firewood added each time is 300g per cubic meter of the electric kiln space. After the last addition of oil firewood, the furnace temperature is cooled down from 1210°C to 200°C at a rate of 160°C / h. The furnace is stopped, the furnace door is opened, and the furnace temperature is cooled down to room temperature to obtain Jianzhan.

[0081] Effect evaluation:

[0082] The Jian ware prepared in this comparative example 2 had no ice cracks and tea-leaf glaze, and there were bubbles on the glaze surface, indicating firing failure.

[0083] The above is an implementation scheme of the present invention designed for a case. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention, and these improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A preparation process of Jianzhan, characterized in that: The process comprises the following steps: (1) 0.2-0.5 parts by weight of laterite and 4.5-5.5 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 80-120 mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, biscuit-fired at 850-890° C. for 5.5-6.5 hours, cooled and taken out to obtain a green body; (2) burning bamboo and collecting ashes to obtain plant ash; (3) Preparation of bottom glaze slurry and coating glaze slurry: Preparation of bottom glaze slurry: grind 6.0-7.0 parts by weight of glaze ore, 0.3-0.7 parts by weight of potassium feldspar, 1.0-1.4 parts by weight of limestone, 0.1-0.4 parts by weight of the plant ash prepared in step (2) and 7.5-8.5 parts by weight of water, and pass through a 80-120 mesh sieve to obtain a bottom glaze slurry; Preparation of coating glaze slurry: 1.3-1.7 parts by weight of albite, 0.3-0.7 parts by weight of limestone, 0.6-1.0 parts by weight of calcite, 0.05-0.15 parts by weight of the plant ash prepared in step (2) and 2.5-3.5 parts by weight of water are ground and passed through a 80-120 mesh sieve to obtain a coating glaze slurry; (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.6-1.0 mm and a coating glaze slurry glazing thickness of 0.3-0.7 mm; (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows: The furnace temperature is raised from room temperature to 1030-1070℃ at a rate of 380-420℃ / h. After being kept at 1030-1070℃ for 15-25min, the furnace temperature is raised from 1030-1070℃ to 1360-1400℃ at a rate of 75-85℃ / h. In the heat preservation state, oil firewood is added into the electric kiln furnace every 8-12min, for a total of 3 times. The amount of oil firewood added each time is 830-870g per cubic meter of electric kiln furnace space. After the last addition of oil firewood, it is kept at 1360-1400℃ for 55-65min, and then the furnace temperature is lowered from 1360-1400℃ to 1190℃ at a rate of 160-200℃ / h. -1230℃, add oil firewood into the electric kiln under insulation state, once every 4-6 minutes, for a total of 2 times, the amount of oil firewood added each time is 280-320g per cubic meter of electric kiln space, and after the last addition of oil firewood, keep warm at 1190-1230℃ for 25-35min, then increase the furnace temperature from 1190-1230℃ to 1300-1340℃ at a rate of 100-140℃ / h, after keeping warm at 1300-1340℃ for 18-22min, then cool down the furnace temperature from 1300-1340℃ to 180-220℃ at a rate of 140-180℃ / h, stop the furnace, open the furnace door, cool the furnace temperature to room temperature, and obtain Jianzhan.

2. The process according to claim 1, characterized in that The process comprises the following steps: (1) 0.2-0.4 parts by weight of laterite and 4.8-5.2 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 80-120 mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, biscuit-fired at 860-880° C. for 5.8-6.2 hours, cooled and taken out to obtain a green body; (2) burning bamboo and collecting ashes to obtain plant ash; (3) Preparation of bottom glaze slurry and coating glaze slurry: Preparation of bottom glaze slurry: grind 6.3-6.7 parts by weight of glaze ore, 0.4-0.6 parts by weight of potassium feldspar, 1.1-1.3 parts by weight of limestone, 0.1-0.3 parts by weight of the plant ash prepared in step (2) and 7.8-8.2 parts by weight of water, and pass through a 80-120 mesh sieve to obtain a bottom glaze slurry; Preparation of coating glaze slurry: 1.4-1.6 parts by weight of albite, 0.4-0.6 parts by weight of limestone, 0.7-0.9 parts by weight of calcite, 0.08-0.12 parts by weight of the plant ash prepared in step (2) and 2.8-3.2 parts by weight of water are ground and passed through a 80-120 mesh sieve to obtain a coating glaze slurry; (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.7-0.9 mm and a coating glaze slurry glazing thickness of 0.4-0.6 mm; (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows: The furnace temperature is raised from room temperature to 1040-1060℃ at a rate of 390-410℃ / h. After being kept at 1040-1060℃ for 18-22min, the furnace temperature is raised from 1040-1060℃ to 1370-1390℃ at a rate of 75-85℃ / h. In the heat preservation state, oil firewood is added into the electric kiln furnace every 9-11min, for a total of 3 times. The amount of oil firewood added each time is 840-860g per cubic meter of electric kiln furnace space. After the last addition of oil firewood, it is kept at 1370-1390℃ for 55-65min, and then the furnace temperature is lowered from 1370-1390℃ to 1200-1 The temperature is 220℃, and oil firewood is added into the electric kiln under insulation state, once every 4.8-5.2 minutes, for a total of 2 times. The amount of oil firewood added each time is 290-310g per cubic meter of the electric kiln space. After the last addition of oil firewood, the kiln is kept warm at 1200-1220℃ for 28-32min, and then the furnace temperature is increased from 1200-1220℃ to 1310-1330℃ at a rate of 110-130℃ / h, after being kept at 1310-1330℃ for 18-22min, the furnace temperature is cooled from 1310-1330℃ to 190-210℃ at a rate of 150-170℃ / h, the furnace is stopped, the furnace door is opened, the furnace temperature is cooled to room temperature, and Jianzhan is obtained.

3. The process according to claim 1, characterized in that The process comprises the following steps: (1) 0.3 parts by weight of laterite and 5.0 parts by weight of kaolin are mixed and crushed, washed with water, passed through a 100-mesh sieve, filtered, refined, and aged to obtain a green body raw material; after the green body raw material is drawn and trimmed, it is bisque-fired at 870° C. for 6 hours, cooled and taken out to obtain a green body; (2) burning bamboo and collecting ashes to obtain plant ash; (3) Preparation of bottom glaze slurry and coating glaze slurry: Preparation of bottom glaze slurry: 6.5 parts by weight of glaze ore, 0.5 parts by weight of potassium feldspar, 1.2 parts by weight of limestone, 0.2 parts by weight of the plant ash prepared in step (2) and 8.0 parts by weight of water are ground and passed through a 100 mesh sieve to obtain a bottom glaze slurry; Preparation of coating glaze slurry: 1.5 parts by weight of albite, 0.5 parts by weight of limestone, 0.8 parts by weight of calcite, 0.1 parts by weight of the plant ash prepared in step (2) and 3.0 parts by weight of water are ground and passed through a 100 mesh sieve to obtain a coating glaze slurry; (4) applying the bottom glaze slurry prepared in step (3) to the body prepared in step (1), and after drying, locally applying the coating glaze slurry prepared in step (3), and drying, to obtain a glazed body having a bottom glaze slurry glazing thickness of 0.8 mm and a coating glaze slurry glazing thickness of 0.5 mm; (5) The glazed body obtained in step (4) is fired in an electric kiln, and the firing steps are as follows: The furnace temperature was raised from room temperature to 1050℃ at a rate of 400℃ / h. After being kept at 1050℃ for 20min, the furnace temperature was raised from 1050℃ to 1380℃ at a rate of 80℃ / h. Oil firewood was added into the electric kiln in the heat preservation state, once every 10min, for a total of 3 times. The amount of oil firewood added each time was 850g per cubic meter of the electric kiln space. After the last addition of oil firewood, it was kept at 1380℃ for 60min, and then the furnace temperature was lowered from 1380℃ to 121 at a rate of 180℃ / h. 0℃, add oil firewood into the electric kiln under insulation state, once every 5 minutes, for a total of 2 times, the amount of oil firewood added each time is 300g per cubic meter of the electric kiln space, and after the last addition of oil firewood, keep warm at 1210℃ for 30min, then increase the temperature from 1210℃ to 1320℃ at a rate of 120℃ / h, after keeping warm at 1320℃ for 20min, then decrease the temperature from 1320℃ to 200℃ at a rate of 160℃ / h, stop the furnace, open the furnace door, and cool the furnace temperature to room temperature to obtain Jianzhan.

4. A Jianzhan, characterized in that: The Jianzhan is prepared by the process as claimed in claim 1.

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