CN110885191B - Full-glaze Jun porcelain spherical glaze bead and preparation method thereof - Google Patents
Full-glaze Jun porcelain spherical glaze bead and preparation method thereof Download PDFInfo
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- CN110885191B CN110885191B CN201911113703.4A CN201911113703A CN110885191B CN 110885191 B CN110885191 B CN 110885191B CN 201911113703 A CN201911113703 A CN 201911113703A CN 110885191 B CN110885191 B CN 110885191B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C12/00—Powdered glass; Bead compositions
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/06—Other methods of shaping glass by sintering, e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction
Abstract
The invention provides a preparation method of full-glaze Jun porcelain spherical glaze beads, which comprises the following steps: a) mixing 42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite in parts by weight, carrying out ball milling to obtain glaze slurry, sieving with a 120-mesh sieve, drying, grinding into powder, adding water, and preparing a glaze blank mud ball to obtain a glaze ball; b) placing a corundum plate paved with superfine alumina micropowder on a shed plate as a burning bearing plate, dispersing glaze balls on the burning bearing plate, and performing glaze burning at 1260-1300 ℃ by adopting a mode of oxidation and reduction to obtain the full-glaze Jun porcelain spherical glaze beads. The method provided by the invention can be used for preparing the full-glaze Jun porcelain spherical glaze beads, has high vitrification degree and good glaze transmutation effect, and can be used for burning and glowing under the irradiation of sunlight. The glaze beads are easy to take out, glaze does not flow, and the burning bearing plate and the shed plate are not adhered. The method does not use a blank body, reduces the biscuit firing procedure and reduces the refraction of the blank body to light.
Description
Technical Field
The invention relates to the technical field of glazed porcelain, in particular to a full-glaze Jun porcelain spherical glaze bead and a preparation method thereof.
Background
Jun porcelain is one of five famous kilns in Song Dynasty, and is quite reputable that Jun porcelain is not as good as Jun porcelain because of having vast wealth of families. The traditional Jun porcelain mainly takes bottle, tripod, goblet and other types, such as the Jun porcelain used as a national gift in recent years, which is a big vessel, kwan-yin bottle, China bottle, happiness bottle, plum bottle, China Tai goblet and the like, and the height of the traditional Jun porcelain is more than 30 centimeters. With the gradual upgrade of people's love on jun porcelain, jun porcelain gradually becomes popular. Jun porcelain tea sets with the height of 5-10 centimeters, dishes and the like are highlighted with warm and moist glaze colors in a simple shape and are deeply favored.
However, none of these jun porcelains are essentially all-glazed jun porcelains, and are typically unglazed at the bottom of the firing. The production of full-glaze jun porcelain is difficult due to the influence of jun porcelain technology and high-temperature fluidity of glaze. Because the high temperature of 1200-1300 ℃ is needed for baking the Jun porcelain, the glaze surface of the Jun porcelain flows in the high-temperature baking process, and the bottom of the Jun porcelain is adhered to the shed plate due to serious glaze flowing, so that the shed plate and even the kiln are damaged while defective parts are formed. Therefore, conventional jun porcelain bases are generally not glazed. Jun porcelain jewelry is different in army and prominent and is concerned. The Jun porcelain glaze bead necklace takes glaze beads as a substrate, adopts a four-claw embedding process around the glaze beads, is made into a pendant and is popular. But it is difficult to produce full-glazed spherical glaze beads by the traditional process.
Disclosure of Invention
In view of the above, the invention aims to provide a full-glaze Jun porcelain spherical glaze bead and a preparation method thereof.
The invention provides a preparation method of full-glaze Jun porcelain spherical glaze beads, which comprises the following steps:
a) mixing 42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite in parts by weight, carrying out ball milling to obtain glaze slurry, sieving with a 120-mesh sieve, drying, grinding into powder, adding water, and preparing a glaze blank mud ball to obtain a glaze ball;
b) placing a corundum plate paved with superfine alumina micropowder on a shed plate as a burning bearing plate, dispersing the glaze balls on the burning bearing plate, and performing glaze firing in a mode of oxidizing firstly and then reducing, wherein the glaze firing temperature is 1260-1300 ℃ to obtain the full-glaze Jun porcelain spherical glaze beads.
Preferably, the diameter of the glaze ball is 0.2-5.0 cm.
Preferably, the granularity of the superfine alumina micro powder is 500-800 nm.
Preferably, the starting materials comprise:
45 parts of melilite, 20 parts of potassium feldspar, 15 parts of quartz, 5 parts of talcum and 15 parts of calcite.
Preferably, the method further comprises the following steps between the step a) and the step b):
rolling the glaze ball obtained in the step a) in the colored overglaze, and airing.
The invention provides a full-glaze Jun porcelain spherical glaze bead prepared by the preparation method of the technical scheme.
The invention provides a preparation method of full-glaze Jun porcelain spherical glaze beads, which comprises the following steps: a) mixing 42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite in parts by weight, carrying out ball milling to obtain glaze slurry, sieving with a 120-mesh sieve, drying, grinding into powder, adding water, and preparing a glaze blank mud ball to obtain a glaze ball; b) placing a corundum plate paved with superfine alumina micropowder on a shed plate as a burning bearing plate, dispersing the glaze balls on the burning bearing plate, and performing glaze firing in a mode of oxidizing firstly and then reducing, wherein the glaze firing temperature is 1260-1300 ℃ to obtain the full-glaze Jun porcelain spherical glaze beads. The method provided by the invention can prepare the full-glaze Jun porcelain spherical glaze beads by adopting the raw materials with the above dosage under the process, has high vitrification degree and good glaze transmutation effect, and can burn and glow under the irradiation of sunlight. The glaze beads prepared by the method are easy to take out, do not flow glaze, and do not adhere to a burning board and a shed board. The glaze beads prepared by the method can keep a spherical shape. The method also enables firing of other types of small-size full-glazed products with a bottom support point. The method does not use a blank body, reduces the biscuit firing procedure and reduces the refraction of the blank body to light. The full glaze is fired, and after glaze firing, the beads are in a half-opalescent state and are more transparent and moist. The full-glaze Jun porcelain spherical glaze beads prepared by the method are controllable in size and convenient for later jewelry processing.
Drawings
FIG. 1 is a schematic view of the appearance of a full-glaze Jun porcelain spherical glaze bead prepared in example 1 of the present invention;
FIG. 2 is a schematic view of the appearance of the full-glaze Jun porcelain spherical glaze bead prepared in example 2 of the present invention;
FIG. 3 is a schematic view of the appearance of the full-glaze Jun porcelain spherical glaze bead prepared in example 3 of the present invention;
FIG. 4 is a schematic view showing the appearance of the full-glaze Jun porcelain spherical glaze beads prepared in comparative example 1 according to the present invention;
FIG. 5 is a schematic view showing the appearance of the full-glaze Jun porcelain spherical glaze bead prepared in comparative example 2 of the present invention.
Detailed Description
The invention provides a preparation method of full-glaze Jun porcelain spherical glaze beads, which comprises the following steps:
a) mixing 42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite in parts by weight, carrying out ball milling to obtain glaze slurry, sieving with a 120-mesh sieve, drying, grinding into powder, adding water, and preparing a glaze blank mud ball to obtain a glaze ball;
b) placing a corundum plate paved with superfine alumina micropowder on a shed plate as a burning bearing plate, dispersing the glaze balls on the burning bearing plate, and performing glaze firing in a mode of oxidizing firstly and then reducing, wherein the glaze firing temperature is 1260-1300 ℃ to obtain the full-glaze Jun porcelain spherical glaze beads.
The method provided by the invention directly prepares the glaze balls by adopting the raw materials with the above dosage, then takes a corundum plate paved with superfine alumina micropowder as a burning bearing plate placed on a shed plate, and adopts a glaze burning mode of firstly oxidizing and then reducing to prepare the full-glaze Jun porcelain spherical glaze beads, so that the vitrification degree is higher, the glaze transmutation effect is good, and the glaze beads can be burned and brightened under the irradiation of sunlight. The glaze beads prepared by the method are easy to take out, do not flow glaze, and do not adhere to a burning board and a shed board. The method enables firing of other types of small-size full-glazed products with bottom support points. The method does not use a blank body, reduces the biscuit firing procedure and reduces the refraction of the blank body to light. The full glaze is fired, and after glaze firing, the beads are in a half-opalescent state and are more transparent and moist. The full-glaze Jun porcelain spherical glaze beads prepared by the method are controllable in size and convenient for later jewelry processing.
42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite are mixed and subjected to ball milling to obtain glaze slurry, the glaze slurry is sieved by a 120-mesh sieve, the powder is ground after drying, water is added, and the obtained glaze blank mud is ground into balls to obtain glaze balls.
In the present invention, the melilite is one of silicate minerals consisting of calcium silicate containing aluminum and magnesium.
The chemical formula of the potassium feldspar is K2O·Al2O3·6SiO2Orthoclase, also commonly known as orthoclase, is monoclinic and is usually reddish in flesh, white or gray.
The talc is a silicate mineral; the main component of the calcite is ground limestone.
According to the invention, by controlling the consumption of the raw materials, the silicon-aluminum ratio and the content of alkali metal in the glaze can be controlled, so that the shrinkage ratio of the glaze is controlled to be 9-11%, and the purpose of preventing glaze flow is finally achieved.
The invention ball-mills the mixed material in a ball mill. Adding a proper amount of water during ball milling. The ball milling time is preferably 2-12 h. And (4) sieving the glaze slip, wherein the sieve allowance is less than 0.5%. The invention preferably naturally dries the glaze slip in the sun and grinds the glaze slip into glaze powder. Directly adding a small amount of water into the glaze powder, and wetting to obtain the glaze blank mud. Processing the glaze blank mud into glaze balls with the diameter of 0.2-5.0 cm; and naturally airing the glazed ball at room temperature. In a specific embodiment, the glaze ball has a diameter of 2 cm.
In a specific example of the present invention, the raw materials include 45 parts by weight of melilite, 20 parts by weight of potassium feldspar, 15 parts by weight of quartz, 5 parts by weight of talc, and 15 parts by weight of calcite.
After the glaze ball is obtained, the glaze ball is placed on a corundum plate paved with superfine alumina micro powder, glaze firing is carried out in a mode of firstly oxidizing and then reducing, the glaze firing temperature is 1260-1300 ℃, and the full-glaze Jun porcelain spherical glaze bead is obtained.
According to the invention, the corundum plate paved with the superfine alumina micropowder is placed on the shed plate as a burning bearing plate, the surface of the corundum plate is smooth and flat, and the contact area between the corundum plate and glaze beads is reduced; the corundum plate has a melting point of 2250 ℃ and a maximum service temperature of 1900 ℃, and is not easy to glaze reaction at high temperature.
The superfine alumina micropowder is preferably prepared by the following method:
and mixing the superfine alumina micro powder with a proper amount of water-ethanol mixed solution, ball-milling for 2-6 hours in a planetary ball mill to enable the superfine alumina micro powder to be nano-sized, and drying to obtain the superfine alumina micro powder.
The granularity of the superfine alumina micro powder is preferably 500-800 nm.
The thickness of the superfine alumina micro powder paved on the corundum plate is preferably 0.05-2 mm, and more preferably 0.1-1.5 mm; if the blanket is too thick, the contact area is too large, which may affect the smoothness of the bottom. In a specific embodiment, the thickness of the superfine alumina micropowder is 0.3mm or 0.5 mm. The invention aims to pave superfine alumina micro powder on a corundum plate: the glaze beads are easy to take out from the burning bearing plate after being burnt, and the direct contact between the glaze beads and the burning bearing plate and the adhesion after high-temperature melting to damage the burning bearing plate are prevented. The alumina powder is not easy to react and adhere with the glaze beads at the high temperature of 1300 ℃. In addition, the alumina powder is white, and even if the bottom of the glaze bead reacts with a small amount of white corundum powder in contact during glaze firing at high temperature, the color of the glaze bead is not influenced.
In order to increase the color of the glaze ball, the glaze ball is preferably rolled in the colored overglaze and dried after being obtained. In the invention, the color generation overglaze can select a proper glaze formula according to the color of a pre-prepared product. The raw materials are preferably uniformly mixed according to a proportion, a proper amount of water is added, the mixture is placed in a planetary ball mill for ball milling for 3.5-4.5 hours, then the glaze slurry is sieved by a 325-mesh sieve, and the sieve residue is less than 0.5%; the ratio of glaze to water is adjusted, and the concentration is controlled at about 52 by using a PMM to obtain the colored overglaze.
In the specific embodiment, melilite, quartz, kaolin, calcite and iron ore in a mass ratio of 55:15:14:15:1 are mixed, a proper amount of water is added, ball milling is carried out for 3-5 hours, then the mixture is sieved by a 325-mesh sieve, the sieve residue is less than 0.5 percent, the mixture is mixed with water, the concentration is controlled to be about 52 by using a Vermeil hydrometer, and the sky-blue colored overglaze is obtained.
Or mixing melilite, potash feldspar, quartz, talc, calcite, tin oxide, zinc oxide and copper ore in a mass ratio of 27:27:15:5:51:1:3:5, adding a proper amount of water, ball-milling for 3-5 h, sieving with a 325-mesh sieve until the sieve residue is less than 0.5%, mixing with water, measuring by using a PMM, and controlling the concentration to be about 52 to obtain the Jun red colored overglaze.
The invention provides the full-glaze Jun porcelain spherical glaze bead prepared by the preparation method. The glaze beads are full glaze products.
In order to further illustrate the present invention, the following examples are provided to describe in detail the present invention and the preparation method of the present invention, but they should not be construed as limiting the scope of the present invention.
Example 1
1. Base glaze: uniformly mixing 45 parts by weight of melilite, 20 parts by weight of potash feldspar, 15 parts by weight of quartz, 5 parts by weight of talcum and 15 parts by weight of calcite according to a proportion, adding a proper amount of water, placing the mixture in a ball mill for ball milling for 12 hours, and then sieving the glaze slurry with a 120-mesh sieve, wherein the sieve residue is less than 0.5%; naturally airing the glaze slip subjected to ball milling treatment in the sun, and grinding into powder; directly adding a small amount of water into the glaze powder, and wetting to obtain the glaze blank mud. Processing the glaze into glaze balls with the diameter of 2cm, and airing.
2. Glaze firing device: a smooth and flat corundum plate is used as a burning bearing plate, a layer of superfine alumina micro powder with the thickness of 0.5mm and the granularity of 500-800 nm is paved on the corundum plate, and glaze balls are dispersed on the alumina micro powder.
3. Glaze firing: and firing by adopting a firing system of firstly oxidizing and then reducing, wherein the firing temperature is 1260-1300 ℃, and the full-glaze Jun porcelain spherical glaze beads are obtained.
Fig. 1 is a schematic view of the appearance of the full-glaze Jun porcelain spherical glaze bead prepared in example 1 of the invention. Wherein a is a figure of placing the spherical glaze beads of Jun porcelain prepared in example 1 with the front side facing upwards, and b is a figure of placing the spherical glaze beads of Jun porcelain prepared in example 1 with the bottom facing upwards. The fired glaze beads are in a moonlight color, have strong jade feeling, are full-glaze beads, and have no phenomena of flowing glaze, adhesion of burning bearing plates and the like.
Example 2
1. Base glaze: uniformly mixing 45 parts by weight of melilite, 20 parts by weight of potash feldspar, 15 parts by weight of quartz, 5 parts by weight of talcum and 15 parts by weight of calcite according to a proportion, adding a proper amount of water, placing the mixture in a ball mill for ball milling for 12 hours, and then sieving glaze slurry with a 120-mesh sieve, wherein the sieve residue is less than 0.5%. Naturally airing the glaze slip subjected to ball milling treatment in the sun, and grinding into powder; directly adding a small amount of water into the glaze powder, and wetting to obtain glaze blank mud; and (4) processing the glaze blank mud into glaze balls with the diameter of 2cm, and airing.
2. Preparing overglaze: the overglaze is sky blue coloring overglaze. Mixing 55 parts by weight of melilite, 15 parts by weight of quartz, 14 parts by weight of kaolin, 15 parts by weight of calcite and 1 part by weight of iron ore uniformly according to a proportion, adding a proper amount of water, placing the mixture in a planetary ball mill for ball milling for 4 hours, and then sieving glaze slurry with a 325-mesh sieve, wherein the sieve residue is less than 0.5%. Adjusting the ratio of glaze to water, measuring with a PMM, controlling the concentration to about 52, rolling the ground glaze ball in the overglaze to make the surface of the ball uniformly adhere a layer of colored overglaze. And (5) naturally airing.
3. Glaze firing device: a smooth and flat corundum plate is used as a burning bearing plate, a layer of superfine alumina micro powder with the thickness of 0.3mm and the granularity of 500-800 nm is paved on the corundum plate, and glaze balls are dispersed on the alumina micro powder.
4. Glaze firing: and firing by adopting a firing system of firstly oxidizing and then reducing, wherein the firing temperature is 1260-1300 ℃, and the sky-blue full-glaze Jun porcelain spherical glaze beads are obtained.
Fig. 2 is an appearance schematic diagram of a sky-blue all-enamel jun porcelain spherical glaze bead prepared in example 2 of the present invention, wherein a in fig. 2 is a schematic diagram of a sky-blue all-enamel jun porcelain spherical glaze bead placed with its front side facing upward, and b in fig. 2 is a schematic diagram of a sky-blue all-enamel jun porcelain spherical glaze bead placed with its bottom side facing upward. The fired glaze beads are sky blue, are in a half-opaque state, are more warm and transparent, are full-glaze beads, and have no phenomena of flowing glaze, adhesion of a burning bearing plate and the like.
Example 3
1. Base glaze: uniformly mixing 45 parts by weight of melilite, 20 parts by weight of potash feldspar, 15 parts by weight of quartz, 5 parts by weight of talcum and 15 parts by weight of calcite according to a proportion, adding a proper amount of water, placing the mixture in a planetary ball mill for ball milling for 12 hours, and then sieving the glaze slurry with a 120-mesh sieve, wherein the sieve residue is less than 0.5%. Naturally airing the glaze slip subjected to ball milling treatment in the sun, and grinding into powder; directly adding a small amount of water into the glaze powder, and wetting to obtain glaze blank mud; and (4) processing the glaze blank mud into glaze balls with the diameter of 2cm, and airing.
2. Preparing overglaze: the overglaze is Jun red colored overglaze. According to the weight parts, 27 parts of melilite, 27 parts of potash feldspar, 15 parts of quartz, 5 parts of talcum, 15 parts of calcite, 1 part of tin oxide, 3 parts of zinc oxide and 5 parts of copper ore are mixed; the raw materials according to the mass are uniformly mixed, a proper amount of water is added, the mixture is placed in a planetary ball mill for ball milling for 4 hours, then the glaze slip is sieved by a 325-mesh sieve, and the sieve residue is less than 0.5 percent. Adjusting the ratio of glaze to water, measuring with a PMM, controlling the concentration to about 52, rolling the ground glaze ball in the overglaze to make the surface of the ball uniformly adhere a layer of Jun red overglaze. And (5) naturally airing.
3. Glaze firing device: a smooth and flat corundum plate is used as a burning bearing plate, a layer of superfine alumina micro powder with the thickness of 0.3mm and the granularity of 500-800 nm is paved on the corundum plate, and glaze balls are dispersed on the alumina micro powder.
4. Glaze firing: and firing by adopting a firing system of firstly oxidizing and then reducing, wherein the firing temperature is 1260-1300 ℃, and the Jun red full-glaze Jun porcelain spherical glaze beads are obtained.
Fig. 3 is an appearance schematic diagram of the Jun red full-glaze Jun porcelain spherical glaze bead prepared in example 3 of the invention. Wherein a is a drawing in which the front of the Jun red all-glaze Jun porcelain spherical glaze bead prepared in example 3 is placed upward, and b is a drawing in which the bottom of the Jun red all-glaze Jun porcelain spherical glaze bead prepared in example 3 is placed upward. The fired glaze beads are Jun red, are warm, moist and transparent, are full-glaze beads, and have no phenomena of flowing glaze, adhesion of a burning bearing plate and the like.
Comparative example 1
1. Base glaze: uniformly mixing 40 parts by weight of melilite, 20 parts by weight of potash feldspar, 10 parts by weight of quartz, 8 parts by weight of talcum and 22 parts by weight of calcite according to a proportion, adding a proper amount of water, placing the mixture in a planetary ball mill for ball milling for 12 hours, and then sieving the glaze slurry with a 120-mesh sieve, wherein the sieve residue is less than 0.5%; naturally airing the glaze slip subjected to ball milling treatment in the sun, and grinding into powder; directly adding a small amount of water into the glaze powder, and wetting to obtain the glaze blank mud. Processing the glaze into glaze balls with the diameter of 2cm, and airing.
2. Glaze firing device: spreading a layer of superfine alumina micropowder with the thickness of 1mm on the shed plate, and dispersing glaze balls on the alumina micropowder.
3. Glaze firing: and firing by adopting a firing system of firstly oxidizing and then reducing, wherein the firing temperature is 1260-1300 ℃, and the glaze beads are obtained.
Fig. 4 is a schematic view of the appearance of the Jun porcelain spherical glaze bead prepared in comparative example 1 of the present invention, wherein a is a view of placing the Jun porcelain spherical glaze bead prepared in comparative example 1 with the front side facing upward, and b is a view of placing the Jun porcelain spherical glaze bead prepared in comparative example 1 with the bottom facing upward. Because the raw material proportion is not properly controlled, the serious glaze flowing phenomenon is caused, although a layer of superfine alumina micro powder with the thickness of 1mm is paved on the shed plate, the bottom is still adhered to the shed plate and is not easy to separate. After the glaze beads were removed from the shelf by mechanical force, the bottom was broken and adhered to the bottom of the glaze beads as shown in FIG. 4. The product can only be discarded as a defective product. As can be seen from fig. 4: according to the invention, the use amount of the raw materials is controlled in a proper proportion, so that the Jun porcelain spherical glaze beads do not flow glaze, otherwise, a full glaze product cannot be obtained.
Comparative example 2
1. Base glaze: uniformly mixing 45 parts by weight of melilite, 20 parts by weight of potash feldspar, 15 parts by weight of quartz, 5 parts by weight of talcum and 15 parts by weight of calcite according to a proportion, adding a proper amount of water, placing the mixture in a planetary ball mill for ball milling for 12 hours, and then sieving the glaze slurry with a 120-mesh sieve, wherein the sieve residue is less than 0.5%. Naturally airing the glaze slip subjected to ball milling treatment in the sun, and grinding into powder; directly adding a small amount of water into the glaze powder, and wetting to obtain glaze blank mud; and (4) processing the glaze blank mud into glaze balls with the diameter of 2cm, and airing.
2. Preparing overglaze: the overglaze is Jun red colored overglaze. The method comprises the following steps of mixing 27 parts by weight of melilite, 27 parts by weight of potash feldspar, 15 parts by weight of quartz, 5 parts by weight of talc, 15 parts by weight of calcite, 1 part by weight of tin oxide, 3 parts by weight of zinc oxide and 5 parts by weight of copper ore. Mixing uniformly according to the proportion, adding a proper amount of water, placing the mixture in a planetary ball mill for ball milling for 4 hours, and then sieving the glaze slurry with a 325-mesh sieve, wherein the sieve residue is less than 0.5%. Adjusting the ratio of glaze to water, measuring with a PMM, controlling the concentration to about 52, rolling the ground glaze ball in the overglaze to make the surface of the ball uniformly adhere a layer of Jun red overglaze. And (5) naturally airing.
3. Glaze firing device: a smooth and flat corundum plate is used as a burning bearing plate, a layer of superfine alumina micro powder with the thickness of 0.3mm is paved on the corundum plate, and glaze balls are dispersed on the alumina micro powder.
4. Glaze firing: and firing by adopting a firing system of firstly oxidizing and then reducing, wherein the firing temperature is 1250 ℃, and the obtained spherical glaze beads are obtained.
FIG. 5 is a schematic view showing the appearance of the spherical glaze beads prepared in comparative example 2 of the present invention. Wherein, a is a picture of placing the Jun porcelain spherical glaze beads prepared in the comparative example 2 with the front side facing upwards, and b is a picture of placing the Jun porcelain spherical glaze beads prepared in the comparative example 2 with the bottom facing upwards. As can be seen from a comparison of fig. 5 and 3: although comparative example 2 and example 3 adopt the same glaze formulation, the glaze cannot be completely reacted due to the lower glaze firing temperature, and the firing phenomenon occurs. Especially bottom burning is more serious. Meanwhile, the coloring elements do not show corresponding Jun red.
The embodiment can show that the invention provides a preparation method of full-glaze Jun porcelain spherical glaze beads, which comprises the following steps: a) mixing 42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite in parts by weight, carrying out ball milling to obtain glaze slurry, sieving with a 120-mesh sieve, drying, grinding into powder, adding water, and preparing a glaze blank mud ball to obtain a glaze ball; b) placing a corundum plate paved with superfine alumina micropowder on a shed plate as a burning bearing plate, dispersing the glaze balls on the burning bearing plate, and performing glaze firing in a mode of oxidizing firstly and then reducing, wherein the glaze firing temperature is 1260-1300 ℃ to obtain the full-glaze Jun porcelain spherical glaze beads. The method provided by the invention can prepare the full-glaze Jun porcelain spherical glaze beads by adopting the raw materials with the above dosage under the process, has high vitrification degree and good glaze transmutation effect, and can burn and glow under the irradiation of sunlight. The glaze beads prepared by the method are easy to take out, do not flow glaze and do not adhere to a burning bearing plate. The glaze beads prepared by the method can keep a spherical shape. The method enables firing of other types of small-size full-glazed products with bottom support points. The method does not use a blank body, reduces the biscuit firing procedure and reduces the refraction of the blank body to light. The full glaze is fired, and after glaze firing, the beads are in a half-opalescent state and are more transparent and moist. The full-glaze Jun porcelain spherical glaze beads prepared by the method are controllable in size and convenient for later jewelry processing.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A preparation method of full-glaze Jun porcelain spherical glaze beads comprises the following steps:
a) mixing 42-48 parts of melilite, 18-22 parts of potassium feldspar, 13-18 parts of quartz, 4-6 parts of talcum and 13-18 parts of calcite in parts by weight, carrying out ball milling to obtain glaze slurry, sieving with a 120-mesh sieve, drying, grinding into powder, adding water, and preparing a glaze blank mud ball to obtain a glaze ball;
b) placing a corundum plate paved with superfine alumina micropowder on a shed plate as a burning bearing plate, dispersing the glaze balls on the burning bearing plate, and performing glaze firing in a mode of oxidizing firstly and then reducing, wherein the glaze firing temperature is 1260-1300 ℃ to obtain the full-glaze Jun porcelain spherical glaze beads.
2. The preparation method according to claim 1, wherein the diameter of the glaze ball is 0.2-5.0 cm.
3. The method according to claim 1, wherein the ultrafine alumina fine powder has a particle size of 500 to 800 nm.
4. The method for preparing the alloy material according to claim 1, wherein the step a) and the step b) further comprise the following steps:
rolling the glaze ball obtained in the step a) in the colored overglaze, and airing.
5. The method of claim 1, wherein the starting material comprises:
45 parts of melilite, 20 parts of potassium feldspar, 15 parts of quartz, 5 parts of talcum and 15 parts of calcite.
6. A full-glaze Jun porcelain spherical glaze bead prepared by the preparation method of any one of claims 1-5.
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| CN201911113703.4A CN110885191B (en) | 2019-11-14 | 2019-11-14 | Full-glaze Jun porcelain spherical glaze bead and preparation method thereof |
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