Linglong glaze with novel process formula and preparation method of Linglong glaze

Abstract

The invention relates to the technical field of exquisite glaze, in particular to exquisite glaze with a novel process formula and a preparation method thereof, and the preparation method comprises the following steps: preparing a blank material from 25-28% of Longyan washed kaolin, 15-19% of machine-piled Longyan soil, 23-25% of potassium feldspar, 23-25% of quartz, 4-6% of Guangfeng talc and 1.5-2.5% of dolomite powder; accurately weighing according to the formula, and crushing and processing in a wet ball mill; the ratio of materials to balls to water in the ball mill is 1: (1.5-2): 0.7; the ball milling time is 20 hours, the fineness of the blank slurry is 0.5%, the weight of the blank slurry is 1.5-1.6 g / cm < 3 >, and then forming and biscuiting are carried out. According to the invention, the firing temperature of the exquisite glaze is reduced to 1080-1100 DEG C from 1320 DEG C, and a medium-low temperature 1080-1100 DEG C blank material and a surface glaze material are matched with the exquisite glaze, so that the cost is reduced, and the energy is saved by 30%.

Description

Technical Field

[0001] The invention relates to the technical field of Linglong glaze, and in particular to a Linglong glaze with a new process formula and a preparation method thereof. Background Art

[0002] Linglong glaze is a craft technology innovated by Jingdezhen during the Yongle period of the Ming Dynasty. It has a history of more than 500 years and is one of the three most important products of Jingdezhen in the history of Chinese ceramics (the other two are thin body and colored glaze). It is a pearl of Chinese ceramic technology. It is also one of the four traditional famous porcelains of Jingdezhen: "Famous color, blue and white porcelain, Linglong porcelain, and colored glaze". Its craft is to fill the hollow part with ceramic glaze on the basis of the carving technique, and decorate the surface of the body with blue and white patterns, and then apply a layer of transparent glaze on it and burn it at a high temperature of 1300℃. Under the irradiation of light, the work forms a rice-like glass body with a slight blue-green color, which is combined with the blue and white patterns to form a unique handicraft.

[0003] The traditional Linglong glaze process is to crush mineral materials to make glaze slurry, fill the hollow parts, and fire it at 1300℃ in a reducing atmosphere to obtain Linglong glaze works. Some of them melt the mineral materials into a frit first, quench with water and then grind it into glaze slurry. The frit needs to be melted at a high temperature of 1520℃, and the glaze must be fired at a high temperature of 1300℃ to make Linglong glaze. In order to improve the traditional process, the present invention forms the product at a low temperature and maintains the quality of the product. Based on this, it is further improved. Summary of the invention

[0004] In view of the defects of the prior art, the purpose of the present invention is to provide a Linglong glaze with a new process formula and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0005] The present invention solves the technical problem by adopting the following technical solution:

[0006] The present invention provides a method for preparing a Linglong glaze with a novel process formula, comprising the following steps:

[0007] (1) Blank preparation:

[0008] Longyan washed kaolin 25-28%, machine-pile Longyan soil 15-19%, potassium feldspar 23-25%, quartz 23-25%, Guangfeng talc 4-6%, dolomite powder 1.5-2.5%;

[0009] According to the above formula, the mixture is accurately weighed and crushed in a wet ball mill; the material in the ball mill: ball: water = 1: (1.5--2): 0.7; the ball milling time is 20 hours, the green slurry fineness, the residue on the 10,000-hole sieve is 0.5%, the specific gravity is 1.5-1.6g / cm3, and then it is molded and bisque fired;

[0010] (2) Preparation of Linglong Glaze: accurately weigh the materials according to the Linglong Glaze formula, grind them in a wet ball mill, grind the materials: ball: water = 1: (1.5-2): 0.6, grind the glaze for 48 hours, the glaze fineness: 0.3-0.5% of the residue on a 10,000-hole sieve, specific gravity 1.55-1.65 g / cm3, dehydrate the glaze in a plaster mold to a moisture content of 20-22%;

[0011] For glazing, put the glaze mud that has been dehydrated to 20-22% into the container, and use a plastic or stainless steel scraper to scrape the glaze mud into the hollowed-out holes of the body, scrape and fill both the inside and outside, and make sure the holes are filled with glaze mud. Use a brush to remove the excess material around the holes of the body, and make sure it is clean.

[0012] (3) Preparation of glaze: accurately weigh the materials according to the formula, grind them in a wet ball mill, and grind the materials in the mill: ball: water = 1: (1.5-2): 0.6; the grinding time of the glaze is 48 hours, the fineness of the glaze is 0.3-0.5% of the residue on the 10,000-hole sieve, and the specific gravity is 1.55-1.65g / cm3; the ground glaze slurry is continuously stirred and homogenized in a tank or pool for one month, and then glazed and fired.

[0013] Preferably, the specific steps of forming and biscuit sintering in the blank preparation are:

[0014] The ground slurry is stored in a slurry pool and stirred continuously to prevent precipitation. It is pumped into a filter press by a slurry pump and pressed and dehydrated to a mud cake with a moisture content of 23-25%. It is then dragged to a mud storage for homogenization and aging for 20 days to make the moisture uniform and the sodium humate alcoholized, thereby increasing the plasticity of the slurry.

[0015] The homogenized mud cake is put into a vacuum mud kneading machine with a vacuum degree of 95%. The vacuum is repeatedly drawn for 2-3 times to remove the air from the mud, reduce the pores, make the water content uniform, make the structure dense, and improve the plasticity. The moisture content of the green mud is 21-24%;

[0016] Forming and finishing: after the blank is dried and shaped, the surface is rough and uneven, and the size is not accurate. Use a knife or sandpaper to fine-tune it, and brush it with water to make the surface of the blank smooth and the size accurate;

[0017] According to the decorative design, hollow out some areas on the blank; refine the blank and dry it at 80-100℃ or naturally until the moisture content is below 1%;

[0018] Bisque firing: the trimmed and dried body is bisque fired in a kiln at a temperature of 750-800℃.

[0019] Preferably, in the molding, different molding processes are used according to different shapes: such as rolling, drawing, and slip injection molding;

[0020] Molding is to fix the physical shape of the blank under the action of external force. Since it contains a certain amount of moisture, the blank still has a certain plasticity and is easy to soften. It must be dried and dehydrated to shape at a temperature of 50-80℃ or dried naturally.

[0021] Preferably, the formula of the Linglong glaze is: 28-32% frit, 28-32% quartz, 8-10% barium oxide, 4-6% kaolin, 20-25% glaze fruit, 4-6% zinc oxide, and 4-6% bentonite.

[0022] Preferably, the glaze formula is: 58-60% frit, 5-7% kaolin, 8-10% barium carbonate, 8-10% quartz, 13-15% albite, and 4-6% zinc oxide.

[0023] Preferably, the frit is 10-15 parts by weight of potassium feldspar, 4-7 parts of nano-alumina, and 3-5 parts of calcined talc.

[0024] Preferably, in the preparation of the glaze surface glaze, the glaze slurry in the pool or tank is pumped into the glazing working barrel, passed through an 80-100 mesh sieve, the glaze slurry has a specific gravity of 1.55-1.6 g / cm3, and a viscosity of 40 seconds, as measured by a viscometer, and the glazing method of dipping, pouring, or spraying is adopted to apply the glaze slurry to the unglazed body filled with the exquisite glaze, and the thickness of the glaze layer is 1.5-2 mm;

[0025] The glaze blank is dried at 80-100℃ or naturally until the moisture content is below 1%;

[0026] Firing: The qualified glaze blanks are fired in a kiln at a temperature of 1080-1100℃ for 7-8 hours, kept at high temperature for 30-60 minutes, and the heating curve and atmosphere are strictly controlled to ensure product quality, and then cooled naturally.

[0027] The invention also provides a method for preparing Linglong glaze with a novel process formula.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention reduces the firing temperature of Linglong glaze from 1320℃ to 1080-1100℃, creating a precedent for medium-low temperature firing of Linglong glaze, which is the first of its kind. It is matched with medium-low temperature 1080-1100℃ blanks and glazes, which reduces costs and saves 30% of energy. This research process, medium-low temperature blanks, glazes, and Linglong glazes, are comprehensive skills in the production process of daily-use ceramics, which is also the first of its kind. Compared with traditional processes and certain invention patents (Linglong glazes are all made into 1520℃ frits and then made into glazes), the process is simplified, the cost is low, and the product qualification rate is greatly improved. The characteristic of Jingdezhen porcelain is that it is fired in a reducing atmosphere, which makes Jingdezhen porcelain white with a bluish tint, and hence the name "white as jade". This research is fired in a reducing atmosphere between 1080-1100℃, which is also a technological innovation and pioneering. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] The method for preparing the Linglong glaze with a new process formula of the present embodiment comprises the following steps:

[0032] (1) Blank preparation:

[0033] Longyan washed kaolin 25-28%, machine-pile Longyan soil 15-19%, potassium feldspar 23-25%, quartz 23-25%, Guangfeng talc 4-6%, dolomite powder 1.5-2.5%;

[0034] According to the above formula, the mixture is accurately weighed and crushed in a wet ball mill; the material in the ball mill: ball: water = 1: (1.5--2): 0.7; the ball milling time is 20 hours, the green slurry fineness, the residue on the 10,000-hole sieve is 0.5%, the specific gravity is 1.5-1.6g / cm3, and then it is molded and bisque fired;

[0035] (2) Preparation of Linglong Glaze: accurately weigh the materials according to the Linglong Glaze formula, grind them in a wet ball mill, grind the materials: ball: water = 1: (1.5-2): 0.6, grind the glaze for 48 hours, the glaze fineness: 0.3-0.5% of the residue on a 10,000-hole sieve, specific gravity 1.55-1.65 g / cm3, dehydrate the glaze in a plaster mold to a moisture content of 20-22%;

[0036] For glazing, put the glaze mud that has been dehydrated to 20-22% into the container, and use a plastic or stainless steel scraper to scrape the glaze mud into the hollowed-out holes of the body, scrape and fill both the inside and outside, and make sure the holes are filled with glaze mud. Use a brush to remove the excess material around the holes of the body, and make sure it is clean.

[0037] (3) Preparation of glaze: accurately weigh the materials according to the formula, grind them in a wet ball mill, and grind the materials in the mill: ball: water = 1: (1.5-2): 0.6; the grinding time of the glaze is 48 hours, the fineness of the glaze is 0.3-0.5% of the residue on the 10,000-hole sieve, and the specific gravity is 1.55-1.65g / cm3; the ground glaze slurry is continuously stirred and homogenized in a tank or pool for one month, and then glazed and fired.

[0038] The specific steps of forming and biscuit sintering in the blank preparation of this embodiment are as follows:

[0039] The ground slurry is stored in a slurry pool and stirred continuously to prevent precipitation. It is pumped into a filter press by a slurry pump and pressed and dehydrated to a mud cake with a moisture content of 23-25%. It is then dragged to a mud storage for homogenization and aging for 20 days to make the moisture uniform and the sodium humate alcoholized, thereby increasing the plasticity of the slurry.

[0040] The homogenized mud cake is put into a vacuum mud kneading machine with a vacuum degree of 95%. The vacuum is repeatedly drawn for 2-3 times to remove the air from the mud, reduce the pores, make the water content uniform, make the structure dense, and improve the plasticity. The moisture content of the green mud is 21-24%;

[0041] Forming and finishing: after the blank is dried and shaped, the surface is rough and uneven, and the size is not accurate. Use a knife or sandpaper to finish it, and brush it with water to make the surface smooth and the size accurate.

[0042] According to the decorative design, hollow out some areas on the blank; refine the blank and dry it at 80-100℃ or naturally until the moisture content is below 1%;

[0043] Bisque firing: the trimmed and dried body is bisque fired in a kiln at a temperature of 750-800℃.

[0044] In the present embodiment, different molding processes are used according to different shapes: such as rolling, drawing, and grouting molding;

[0045] Molding is to fix the physical shape of the blank under the action of external force. Since it contains a certain amount of moisture, the blank still has a certain plasticity and is easy to soften. It must be dried and dehydrated to shape at a temperature of 50-80℃ or dried naturally.

[0046] The formula of the exquisite glaze of this embodiment is as follows: 28-32% of frit, 28-32% of quartz, 8-10% of barium oxide, 4-6% of kaolin, 20-25% of glaze fruit, 4-6% of zinc oxide, and 4-6% of bentonite.

[0047] The glaze formula of the glaze of this embodiment is as follows: 58-60% of frit, 5-7% of kaolin, 8-10% of barium carbonate, 8-10% of quartz, 13-15% of albite, and 4-6% of zinc oxide.

[0048] The frit of this embodiment is 10-15 parts by weight of potassium feldspar, 4-7 parts of nano-alumina, and 3-5 parts of calcined talc.

[0049] In the preparation of the glaze surface glaze of this embodiment, the glaze slurry in the pool or tank is pumped into the glazing working barrel, passed through an 80-100 mesh sieve, the glaze slurry has a specific gravity of 1.55-1.6 g / cm3, and a viscosity of 40 seconds, as measured by a viscometer. The glazing method of dipping, pouring, or spraying is adopted to apply the glaze slurry to the unglazed body filled with the exquisite glaze, and the thickness of the glaze layer is 1.5-2 mm;

[0050] The glaze blank is dried at 80-100℃ or naturally until the moisture content is below 1%;

[0051] Firing: The qualified glaze blanks are fired in a kiln at a temperature of 1080-1100℃ for 7-8 hours, kept at high temperature for 30-60 minutes, and the heating curve and atmosphere are strictly controlled to ensure product quality, and then cooled naturally.

[0052] The Linglong glaze is prepared by a method for preparing Linglong glaze with a new process formula in this embodiment.

[0053] Example 1.

[0054] The method for preparing the Linglong glaze with a new process formula of the present embodiment comprises the following steps:

[0055] (1) Blank preparation:

[0056] Longyan washed kaolin 25%, machine-pile Longyan soil 15%, potassium feldspar 23%, quartz 23%, Guangfeng talc 4%, dolomite powder 1.5%;

[0057] According to the above formula, the mixture is accurately weighed and crushed in a wet ball mill; the material in the ball mill: ball: water = 1:1.5:0.7; the ball milling time is 20 hours, the green slurry fineness, the residue on the 10,000-hole sieve is 0.5%, the specific gravity is 1.5g / cm3, and then it is molded and bisque fired;

[0058] (2) Preparation of Linglong Glaze: The materials were accurately weighed according to the Linglong Glaze formula and crushed in a wet ball mill. The material: ball: water = 1:1.5:0.6. The grinding time of the glaze was 48 hours. The glaze fineness was: 0.3% of the residue on a 10,000-hole sieve. The specific gravity was 1.55 g / cm3. The glaze was dehydrated in a plaster mold to a moisture content of 20%;

[0059] For glazing, put the glaze mud that has been dehydrated to 20% into the container, and use a plastic or stainless steel scraper to scrape the glaze mud into the hollowed-out holes of the body, scrape and fill both the inside and outside, and make sure the holes are filled with glaze mud. Use a brush to remove the excess material around the holes of the body, and make sure it is clean.

[0060] (3) Preparation of glaze: accurately weigh the materials according to the formula, grind them in a wet ball mill, and grind the materials in the mill: ball: water = 1:1.5:0.6; the grinding time of the glaze is 48 hours, the glaze fineness is 0.3% of the residue on the 10,000-hole sieve, and the specific gravity is 1.55g / cm3; the ground glaze slurry is continuously stirred and homogenized in a tank or pool for one month, and then glazed and fired.

[0061] The specific steps of forming and biscuit sintering in the blank preparation of this embodiment are as follows:

[0062] The ground slurry is stored in a slurry pool and stirred continuously to prevent sedimentation. It is pumped into a filter press by a slurry pump and pressed and dehydrated to a mud cake with a water content of 23%. It is then dragged to a mud storage for homogenization and aging for 20 days to make the water content uniform and the sodium humate alcoholized to increase the plasticity of the slurry.

[0063] The homogenized mud cake was put into a vacuum mud kneading machine with a vacuum degree of 95% and vacuumed and kneaded twice to remove the air from the mud, reduce the pores, make the water content uniform, make the structure dense, and improve the plasticity. The moisture content of the green mud was 21%;

[0064] Forming and finishing: after the blank is dried and shaped, the surface is rough and uneven, and the size is not accurate. Use a knife or sandpaper to finish it, and brush it with water to make the surface smooth and the size accurate.

[0065] According to the decorative design, hollow out some areas on the blank; refine the blank and dry it at 80℃ or naturally until the moisture content is below 1%;

[0066] Bisque firing: the trimmed and dried body is bisque fired in a kiln at a temperature of 750°C.

[0067] In the present embodiment, different molding processes are used according to different shapes: such as rolling, drawing, and grouting molding;

[0068] Molding is to fix the physical shape of the blank under the action of external force. Since it contains a certain amount of moisture, the blank still has a certain plasticity and is easy to soften. It must be dried and dehydrated to shape, at a temperature of 50°C or dried naturally.

[0069] The formula of the exquisite glaze of this embodiment is as follows: 28% frit, 28% quartz, 8-10% barium oxide, 4% kaolin, 20% glaze fruit, 4% zinc oxide, and 4% bentonite.

[0070] The glaze formula of the present embodiment is as follows: 58% of frit, 5% of kaolin, 8% of barium carbonate, 8% of quartz, 13% of albite, and 4% of zinc oxide.

[0071] The frit of this embodiment is 10 parts by weight of potassium feldspar, 4 parts of nano-alumina, and 3 parts of calcined talc.

[0072] In the preparation of the glaze surface glaze of this embodiment, the glaze slurry in the pool or tank is pumped into the glazing working barrel, passed through an 80-mesh sieve, the glaze slurry has a specific gravity of 1.55-1.6 g / cm3, and a viscosity of 40 seconds, as measured by a viscometer. The glazing method of dipping, pouring, and spraying is adopted to apply the glaze slurry on the unglazed body filled with exquisite glaze, and the thickness of the glaze layer is 1.5 mm;

[0073] The glaze blank is dried at 80℃ or naturally until the moisture content is below 1%;

[0074] Firing: The qualified glaze blanks are fired in a kiln at a temperature of 1080℃ for 7 hours, kept at high temperature for 30 minutes, and the heating curve and atmosphere are strictly controlled to ensure product quality, and then cooled naturally.

[0075] The Linglong glaze is prepared by a method for preparing Linglong glaze with a new process formula in this embodiment.

[0076] Example 2.

[0077] The method for preparing the Linglong glaze with a new process formula of the present embodiment comprises the following steps:

[0078] (1) Blank preparation:

[0079] Longyan washed kaolin 28%, machine-pile Longyan soil 19%, potassium feldspar 25%, quartz 25%, Guangfeng talc 6%, dolomite powder 2.5%;

[0080] According to the above formula, the mixture is accurately weighed and crushed in a wet ball mill; the material in the ball mill: ball: water = 1:2:0.7; the ball milling time is 20 hours, the green slurry fineness, the residue on the 10,000-hole sieve is 0.5%, the specific gravity is 1.6g / cm3, and then it is molded and bisque fired;

[0081] (2) Preparation of Linglong Glaze: The materials were accurately weighed according to the Linglong Glaze formula and crushed in a wet ball mill. The material: ball: water = 1:2:0.6. The grinding time of the glaze was 48 hours. The glaze fineness was: 0.5% of the residue on a 10,000-hole sieve. The specific gravity was 1.65 g / cm3. The glaze was dehydrated in a plaster mold to a moisture content of 22%;

[0082] For glazing, put the glaze mud that has been dehydrated to 20-22% into the container, and use a plastic or stainless steel scraper to scrape the glaze mud into the hollowed-out holes of the body, scrape and fill both the inside and outside, and make sure the holes are filled with glaze mud. Use a brush to remove the excess material around the holes of the body, and make sure it is clean.

[0083] (3) Preparation of glaze: accurately weigh the materials according to the formula, grind them in a wet ball mill, and grind the materials in the mill: ball: water = 1:2:0.6; the grinding time of the glaze is 48 hours, the glaze fineness is 0.5% of the residue on the 10,000-hole sieve, and the specific gravity is 1.65g / cm3; the ground glaze slurry is continuously stirred and homogenized in a tank or pool for one month, and then glazed and fired.

[0084] The specific steps of forming and biscuit sintering in the blank preparation of this embodiment are as follows:

[0085] The ground slurry is stored in a slurry pool and stirred continuously to prevent sedimentation. It is pumped into a filter press by a slurry pump and pressed and dehydrated to a mud cake with a water content of 25%. It is then dragged to a mud storage for homogenization and aging for 20 days to make the water content uniform and the sodium humate alcoholized to increase the plasticity of the slurry.

[0086] The homogenized mud cake was put into a vacuum mud kneading machine with a vacuum degree of 95% for three times to remove the air from the mud, reduce the pores, make the water content uniform, make the structure dense, and improve the plasticity. The moisture content of the green mud was 24%;

[0087] Forming and finishing: after the blank is dried and shaped, the surface is rough and uneven, and the size is not accurate. Use a knife or sandpaper to finish it, and brush it with water to make the surface smooth and the size accurate.

[0088] According to the decorative design, hollow out some areas on the blank; refine the blank and dry it at 100℃ or naturally until the moisture content is below 1%;

[0089] Bisque firing: the trimmed and dried body is bisque fired in a kiln at a temperature of 800°C.

[0090] In the present embodiment, different molding processes are used according to different shapes: such as rolling, drawing, and grouting molding;

[0091] Molding is to fix the physical shape of the blank under the action of external force. Since it contains a certain amount of moisture, the blank still has a certain plasticity and is easy to soften. It must be dried and dehydrated to shape at 80°C or dried naturally.

[0092] The formula of the exquisite glaze of this embodiment is: 32% frit, 32% quartz, 10% barium oxide, 6% kaolin, 25% glaze fruit, 6% zinc oxide, and 6% bentonite.

[0093] The glaze formula of the glaze in this embodiment is as follows: 60% of frit, 7% of kaolin, 10% of barium carbonate, 10% of quartz, 15% of albite, and 6% of zinc oxide.

[0094] The frit of this embodiment is 15 parts by weight of potassium feldspar, 7 parts by weight of nano-alumina, and 5 parts by weight of calcined talc.

[0095] In the preparation of the glaze surface glaze of this embodiment, the glaze slurry in the pool or tank is pumped into the glazing working barrel, passed through a 100-mesh sieve, the glaze slurry has a specific gravity of 1.6 g / cm3, and a viscosity of 40 seconds, as measured by a viscometer. The glazing method of dipping, pouring, and spraying is adopted to apply the glaze slurry on the unglazed body filled with exquisite glaze, and the thickness of the glaze layer is 2 mm;

[0096] The glaze blank is dried at 100℃ or naturally until the moisture content is below 1%;

[0097] Firing: The qualified glaze blanks are fired in a kiln at a temperature of 1100℃ for 8 hours, kept at high temperature for 60 minutes, and the heating curve and atmosphere are strictly controlled to ensure product quality, and then cooled naturally.

[0098] The Linglong glaze is prepared by a method for preparing Linglong glaze with a new process formula in this embodiment.

[0099] Example 3.

[0100] The method for preparing the Linglong glaze with a new process formula of the present embodiment comprises the following steps:

[0101] (1) Blank preparation:

[0102] Longyan washed kaolin 26%, machine-pile Longyan soil 17%, potassium feldspar 24%, quartz 24%, Guangfeng talc 5%, dolomite powder 2.0%;

[0103] According to the above formula, the mixture is accurately weighed and crushed in a wet ball mill; the material in the ball mill: ball: water = 1:1.8:0.7; the ball milling time is 20 hours, the green slurry fineness, the residue on the 10,000-hole sieve is 0.5%, the specific gravity is 1.55g / cm3, and then it is molded and bisque fired;

[0104] (2) Preparation of Linglong Glaze: The materials were accurately weighed according to the Linglong Glaze formula and crushed in a wet ball mill. The material: ball: water = 1:1.8:0.6. The grinding time of the glaze was 48 hours. The glaze fineness was: 0.4% of the residue on a 10,000-hole sieve. The specific gravity was 1.60 g / cm3. The glaze was dehydrated in a plaster mold to a moisture content of 21%;

[0105] For glazing, put the glaze mud that has been dehydrated to 21% into a container, and use a plastic or stainless steel scraper to scrape the glaze mud into the hollowed-out holes of the body, scrape and fill both the inside and outside, and make sure the holes are filled with glaze mud. Use a brush to remove the excess material around the holes of the body, and make sure it is clean.

[0106] (3) Preparation of glaze: accurately weigh the materials according to the formula, grind them in a wet ball mill, and grind the materials in the mill: ball: water = 1:1.8:0.6; the grinding time of the glaze is 48 hours, the glaze fineness is 0.4% of the residue on the 10,000-hole sieve, and the specific gravity is 1.60g / cm3; the ground glaze slurry is continuously stirred and homogenized in a tank or pool for one month, and then glazed and fired.

[0107] The specific steps of forming and biscuit sintering in the blank preparation of this embodiment are as follows:

[0108] The ground slurry is stored in a slurry pool and stirred continuously to prevent precipitation. It is pumped into a filter press by a slurry pump and pressed and dehydrated to a mud cake with a moisture content of 23-25%. It is then dragged to a mud storage for homogenization and aging for 20 days to make the moisture uniform and the sodium humate alcoholized, thereby increasing the plasticity of the slurry.

[0109] The homogenized mud cake is put into a vacuum mud kneading machine with a vacuum degree of 95%. The vacuum is repeatedly drawn 2-3 times to remove the air from the mud, reduce the pores, make the water content uniform, make the structure dense, and improve the plasticity. The moisture content of the green mud is 23%;

[0110] Forming and finishing: after the blank is dried and shaped, the surface is rough and uneven, and the size is not accurate. Use a knife or sandpaper to finish it, and brush it with water to make the surface smooth and the size accurate.

[0111] According to the decorative design, hollow out some areas on the blank; refine the blank and dry it at 90℃ or naturally until the moisture content is below 1%;

[0112] Bisque firing: the trimmed and dried body is bisque fired in a kiln at a temperature of 780°C.

[0113] In the present embodiment, different molding processes are used according to different shapes: such as rolling, drawing, and grouting molding;

[0114] Molding is to fix the physical shape of the blank under the action of external force. Since it contains a certain amount of moisture, the blank still has a certain plasticity and is easy to soften. It must be dried and dehydrated to shape at a temperature of 50-80℃ or dried naturally.

[0115] The formula of the exquisite glaze of this embodiment is: 30% frit, 30% quartz, 9% barium oxide, 5% kaolin, 22% glaze fruit, 5% zinc oxide, and 5% bentonite.

[0116] The glaze formula of the present embodiment is as follows: 59% of frit, 6% of kaolin, 9% of barium carbonate, 9% of quartz, 14% of albite, and 5% of zinc oxide.

[0117] The frit of this embodiment is 12.5 parts by weight of potassium feldspar, 5.5 parts by weight of nano-alumina, and 4 parts by weight of calcined talc.

[0118] In the preparation of the glaze surface glaze of this embodiment, the glaze slurry in the pool or tank is pumped into the glazing working barrel, passed through a 90-mesh sieve, the glaze slurry has a specific gravity of 1.58 g / cm3, and a viscosity of 40 seconds, as measured by a viscometer. The glazing method of dipping, pouring, and spraying is adopted to apply the glaze slurry on the unglazed body filled with exquisite glaze, and the thickness of the glaze layer is 1.8 mm;

[0119] The glaze blank is dried at 90℃ or naturally until the moisture content is below 1%;

[0120] Firing: The qualified glaze blanks are fired in a kiln at a temperature of 1090℃ for 7.5 hours, kept at high temperature for 45 minutes, and the heating curve and atmosphere are strictly controlled to ensure product quality, and then cooled naturally.

[0121] The Linglong glaze is prepared by a method for preparing Linglong glaze with a new process formula in this embodiment.

[0122] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0123] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for preparing a Linglong glaze with a new process formula, characterized in that: The following steps are involved: (1) Blank preparation: Longyan washed kaolin 25-28%, machine-pile Longyan soil 15-19%, potassium feldspar 23-25%, quartz 23-25%, Guangfeng talc 4-6%, dolomite powder 1.5-2.5%; Accurately weigh according to the above formula and grind in a wet ball mill; Material in the ball mill: Ball: water = 1: (1.5--2): 0.7; ball milling time 20 hours, green pulp fineness, 0.5% of the 10,000-hole sieve residue, specific gravity 1.5-1.6g / cm3, and then molding and biscuit firing; (2) Preparation of Linglong Glaze: accurately weigh the materials according to the Linglong Glaze formula, grind them in a wet ball mill, grind the materials: ball: water = 1: (1.5-2): 0.6, grind the glaze for 48 hours, the glaze fineness: 0.3-0.5% of the residue on a 10,000-hole sieve, specific gravity 1.55-1.65 g / cm3, dehydrate the glaze in a plaster mold to a moisture content of 20-22%; For glazing, put the glaze mud that has been dehydrated to 20-22% into the container, and use a plastic or stainless steel scraper to scrape the glaze mud into the hollowed-out holes of the body, scrape and fill both the inside and outside, and make sure the holes are filled with glaze mud. Use a brush to remove the excess material around the holes of the body, and make sure it is clean. (3) Preparation of glaze: weigh the materials accurately according to the formula, grind them in a wet ball mill, and grind the materials in the mill: Ball: water = 1: (1.5-2): 0.6; glaze grinding time is 48 hours, glaze fineness is 0.3-0.5% of 10,000-hole sieve residue, specific gravity is 1.55-1.65g / cm3; the ground glaze slurry is continuously stirred and homogenized in a tank or pool for one month, and then glazed and fired.

2. The method for preparing the Linglong glaze with a new process formula according to claim 1 is characterized in that: The specific steps of forming and biscuit sintering in the preparation of blanks are as follows: The ground slurry is stored in a slurry pool and stirred continuously to prevent precipitation. It is pumped into a filter press by a slurry pump and pressed and dehydrated to a mud cake with a moisture content of 23-25%. It is then dragged to a mud storage for homogenization and aging for 20 days to make the moisture uniform and the sodium humate alcoholized, thereby increasing the plasticity of the slurry. The homogenized mud cake is put into a vacuum mud kneading machine with a vacuum degree of 95%. The vacuum is repeatedly drawn for 2-3 times to remove the air from the mud, reduce the pores, make the water content uniform, make the structure dense, and improve the plasticity. The moisture content of the green mud is 21-24%; Forming and finishing: after the blank is dried and shaped, the surface is rough and uneven, and the size is not accurate. Use a knife or sandpaper to finish it, and brush it with water to make the surface smooth and the size accurate. According to the decorative design, hollow out some areas on the blank; refine the blank and dry it at 80-100℃ or naturally until the moisture content is below 1%; Bisque firing: the trimmed and dried body is bisque fired in a kiln at a temperature of 750-800℃.

3. The method for preparing the Linglong glaze with a new process formula according to claim 2 is characterized in that: In the molding process, different molding processes are used according to different shapes, such as rolling, drawing, and grouting molding; Molding is to fix the physical shape of the blank under the action of external force. Since it contains a certain amount of moisture, the blank still has a certain plasticity and is easy to soften. It must be dried and dehydrated to shape at a temperature of 50-80℃ or dried naturally.

4. The method for preparing the Linglong glaze with a new process formula according to claim 1 is characterized in that: The formula of the exquisite glaze is as follows: 28-32% of frit, 28-32% of quartz, 8-10% of barium oxide, 4-6% of kaolin, 20-25% of glaze fruit, 4-6% of zinc oxide and 4-6% of bentonite.

5. The method for preparing the Linglong glaze with a new process formula according to claim 4 is characterized in that: The glaze formula includes: 58-60% of frit, 5-7% of kaolin, 8-10% of barium carbonate, 8-10% of quartz, 13-15% of albite and 4-6% of zinc oxide.

6. The method for preparing the Linglong glaze with a new process formula according to claim 5 is characterized in that: The frit is 10-15 parts by weight of potassium feldspar, 4-7 parts by weight of nano-alumina, and 3-5 parts by weight of calcined talc.

7. The method for preparing the Linglong glaze with a new process formula according to claim 6 is characterized in that: In the preparation of the glaze surface glaze, the glaze slurry in the pool or tank is pumped into the glazing working barrel, passed through an 80-100 mesh sieve, the glaze slurry has a specific gravity of 1.55-1.6g / cm3, and a viscosity of 40 seconds, measured by a viscometer, and the glazing method of dipping, pouring, or spraying is adopted to apply the glaze slurry on the unglazed body filled with exquisite glaze, and the thickness of the glaze layer is 1.5-2mm; The glaze blank is dried at 80-100℃ or naturally until the moisture content is below 1%; Firing: The qualified glaze blanks are fired in a kiln at a temperature of 1080-1100℃ for 7-8 hours, kept at high temperature for 30-60 minutes, and the heating curve and atmosphere are strictly controlled to ensure product quality, and then cooled naturally.

8. Linglong glaze prepared by the method for preparing Linglong glaze with a new process formula as described in any one of claims 1 to 7.