CN114873989B

CN114873989B - Crystal ice crack porcelain and preparation method thereof

Info

Publication number: CN114873989B
Application number: CN202210612583.8A
Authority: CN
Inventors: 刘干平; 李刘旒; 刘小文
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-04-14
Anticipated expiration: 2042-05-31
Also published as: CN114873989A

Abstract

The application provides a crystal ice crack porcelain and a preparation method thereof, and relates to the technical field of ceramics. The crystal ice crack porcelain comprises a blank and glaze, wherein the glaze comprises the following raw materials in parts by weight: 28-52 parts of potash feldspar, 28-52 parts of albite, 10-20 parts of limestone, 2-4 parts of violet gold soil, 0.5-1.5 parts of fluorite, 0.5-1.5 parts of zinc oxide and 2-6 parts of barium carbonate. The preparation method comprises the following steps: grinding the blank raw materials, adding water for wet grinding, then preparing blank mud, drying and forming, and putting into a kiln for firing into biscuit firing blanks; mixing glaze raw materials, carrying out wet ball milling on the ball stone, the glaze mixed raw materials and water, and grinding to obtain glaze slurry; glazing slurry on the cooled biscuit, and scraping and washing the bottom feet of the biscuit; and (4) putting the glazed biscuit firing blank into a kiln for firing, and obtaining the crystal ice crack porcelain after firing. The crystal ice crack porcelain has the advantages of complete and attractive patterns, uniform distribution and high glaze glossiness.

Description

Crystal ice crack porcelain and preparation method thereof

Technical Field

The application relates to the technical field of ceramics, in particular to a crystal ice crack porcelain and a preparation method thereof.

Background

China has a long-flowing culture source, and celadon is famous for fine porcelain quality, luxuriant and simple appearance, and green, clear and moist color and luster, and has the reputation of the flower of the porcelain. The celadon is originated from original porcelain of the commercial generation, the production level of the celadon reaches the peak in the Song Dynasty, in the development course of 3000 years, the celadon is mature from birth, the love of the precedent to the celadon is originated from the Shangyu plot of Chinese nationality, the texture of the celadon like jade like ice is just the symbol of the Chinese national high-grade, and the celadon is a fresh and alive national culture symbol in the development course of the Chinese national civilization.

The ice crack porcelain is actually an oblique crack glaze porcelain, and the basic principle is that the expansion coefficients of the body glaze are different, so that various forms of crack glaze are produced, and the ice crack glaze can be formed only by the difference of the expansion coefficients of a certain proper body glaze. It is characterized in that the crackle white edges with different brightness in the glaze layer form patterns like rose petals, and the patterns are distributed in the glaze layer in a laminated manner, thereby creating an artistic aesthetic feeling of antique and fragrant ice-like jade. The ice crackle porcelain is ancient and recorded in Zun Sheng Bayi Ming Dynasty by high curtain in "Zun Sheng Bayi" that the veins are the upper one for ice crackle blood, the inferior one for plum blossom black and the lower one for fine broken veins ". The cracked ice porcelain with exquisite handicraft figures is fired in the official kiln, the brother kiln, the Ru kiln, the Jun kiln and the Longquan kiln in the five famous kilns of Song Dynasty. However, because the firing of the cracked-ice porcelain is extremely difficult, the cracked-ice porcelain from the ancient kilns is rarely available, and the firing technology is lost after the south song. For many years, many domestic experts have been exploring the firing method of ice crack porcelain, and although certain achievements are obtained, various defects always exist, such as incomplete ice flower rose petals, lack of stereoscopic impression, uneven distribution in a glaze layer, disorder and no badge, little ice crack on a product, dominant plum blossom black veins and a lot of fine broken veins, and uneven distribution of bubbles in glaze, so that the whole porcelain glaze is dull and dull.

Disclosure of Invention

An object of this application is to provide a crystal ice crackle porcelain, this crystal ice crackle porcelain have that the decorative pattern is complete pleasing to the eye, distribute even, glaze glossiness is high and the good advantage of transparency.

The other purpose of the application is to provide a preparation method of the crystal ice crack porcelain, so as to obtain the crystal ice crack porcelain.

The technical problem to be solved by the application is solved by adopting the following technical scheme.

On one hand, the embodiment of the application provides a crystal ice crack porcelain, which comprises a blank and a glaze, wherein the glaze comprises the following raw materials in parts by weight: 28-52 parts of potash feldspar, 28-52 parts of albite, 10-20 parts of limestone, 2-4 parts of gilt clay, 0.5-1.5 parts of fluorite, 0.5-1.5 parts of zinc oxide and 2-6 parts of barium carbonate.

On the other hand, the embodiment of the application provides a preparation method of crystal ice crack porcelain, which comprises the following steps:

grinding the blank raw material, adding water for wet grinding, then preparing blank mud, drying, forming and placing into a kiln for biscuiting;

mixing glaze raw materials, carrying out wet ball milling on the ball stone, the glaze mixed raw materials and water, and grinding to obtain glaze slurry;

glazing slurry on the cooled biscuit, and scraping and washing the biscuit bottom feet;

and (3) putting the glazed biscuit into a kiln for firing, cooling and opening the kiln after low-temperature firing, medium-temperature firing and high-temperature firing to obtain the crystal ice crack porcelain.

Compared with the prior art, the embodiment of the application has at least the following advantages or beneficial effects:

under the glaze material formula, the expansion coefficient of the glaze body can be matched properly, so that the ice cracking effect of the rose petals is formed, ice flowers are uniformly distributed on the whole glaze layer, and the ice flower rose petals are complete and have a stereoscopic impression; moreover, the configuration can ensure that bubbles in the glaze layer are fine, rare and uniformly distributed, and the transparency is high; the addition of zinc oxide, barium carbonate and fluorite in the glaze increases the transparency of the glaze layer and enhances the glossiness of the glaze; the obtained glaze has pure and pure tone and is matched with the blank body, so that the porcelain has good glossiness and attractive appearance, and the fired porcelain has the advantages of high mechanical strength, high hardness, good glossiness, good thermal stability and chemical stability and low cost of raw materials.

When the porcelain is prepared, the blank is made into a bisque-fired blank which is reddish brown, and the bisque-fired blank is matched with a glaze surface after being fired, so that the whole porcelain has good glossiness and can sparkle under the irradiation of sunlight; the glaze material can be made to be uniform and fine by performing wet ball milling on the glaze material, so that the surface glaze layer of the biscuit firing blank is ensured to be uniform and fine during subsequent glazing, the porcelain with uniform and complete ice cracks is obtained after firing, and a large amount of bubbles can not appear in the final porcelain; the biscuit firing is gradually carried out from low temperature to high temperature after low temperature firing, medium temperature firing and high temperature firing, so that the glaze layer can be favorably adsorbed on the surface of the biscuit, bubbles in the glaze layer can be promoted to be discharged, a uniform and compact glaze surface is formed, the final glaze surface has high brightness, good transparency and good refraction and reflection effects on light.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a view showing a finished porcelain product according to example 3 of the present application;

FIG. 2 is a view showing a finished porcelain product of comparative example 1 of the present application;

fig. 3 is a view showing a finished porcelain product according to comparative example 2 of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are conventional products which are not indicated by manufacturers and are commercially available.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to specific examples.

The embodiment provides a crystal ice crack porcelain, which comprises a blank and a glaze, wherein the glaze comprises the following raw materials in parts by weight: 28-52 parts of potash feldspar, 28-52 parts of albite, 10-20 parts of limestone, 2-4 parts of violet gold soil, 0.5-1.5 parts of fluorite, 0.5-1.5 parts of zinc oxide and 2-6 parts of barium carbonate. Under the glaze material formula, the expansion coefficient of the glaze body can be matched properly, so that the ice cracking effect of the rose petals is formed, ice flowers are uniformly distributed on the whole glaze layer, and the ice flower rose petals are complete and have a stereoscopic impression; moreover, the configuration can ensure that bubbles in the glaze layer are fine, rare and uniformly distributed, and the transparency is high; the addition of zinc oxide, barium carbonate and fluorite in the glaze increases the transparency of the glaze layer and enhances the glossiness of the glaze; the obtained glaze is pure and pure in tone and is matched with a blank body, so that the porcelain has good glossiness and attractive appearance, and the fired porcelain has the advantages of high mechanical strength, high hardness, good glossiness, good thermal stability and chemical stability and low cost of raw materials.

In some embodiments, the blank comprises the following raw materials in parts by weight: 52-78 parts of purple golden soil and 24-46 parts of kaolin. The raw materials of the blank are purple-gold soil and kaolin in the proportion, so that the prepared biscuit is reddish brown, and the biscuit is mutually highlighted with a glaze surface after being fired, and the final finished product is bright in color and elegant in appearance. The Zijin soil is Shizi cage Zijin soil.

Preferably, the purple gold soil comprises the following components in a mass ratio of 1: (3-4) mixing the two kinds of Zijin soil, namely the Zijin soil in the large kiln and the Zijin soil in the large kiln (both producing areas are Longquan), wherein the Zijin soil in the large kiln has high iron content but high price, and the Zijin soil in the lion cage has slightly low iron content but low price, so that on one hand, a biscuit firing blank with better quality can be obtained on the basis of reducing cost, and on the other hand, the two kinds of Zijin soil have different compound contents (such as silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, iron oxide and the like), and after mixing the two kinds of Zijin soil, the quality of the fired biscuit can be high.

In some embodiments, the blank comprises the following raw materials in parts by weight: 58-72 parts of purple golden soil and 30-40 parts of kaolin; the glaze comprises the following raw materials in parts by weight: 36-44 parts of potash feldspar, 36-44 parts of albite, 12-18 parts of limestone, 2-4 parts of violet gold soil, 0.5-1.5 parts of fluorite, 0.5-1.5 parts of zinc oxide and 3-5 parts of barium carbonate.

The embodiment also provides a preparation method of the crystal ice crack porcelain, which comprises the following steps:

grinding the blank raw material, adding water for wet grinding, then preparing blank mud, drying and forming, and placing into a kiln for biscuiting;

mixing glaze raw materials, performing wet ball milling on the ball stone, the glaze mixed raw materials and water, and grinding to obtain glaze slurry;

and (3) putting the glazed biscuit into a kiln for firing, cooling and opening the kiln after low-temperature firing, medium-temperature firing and high-temperature firing to obtain the crystal ice crack porcelain. During preparation, the blank is made into a biscuit firing blank which is reddish brown and is matched with a glaze surface after being fired, so that the whole porcelain can be excellent in glossiness and sparkling under the irradiation of sunlight; the glaze is uniformly fine by performing wet ball milling on the glaze, so that the surface glaze layer of a biscuit is ensured to be uniform and fine during subsequent glazing, the porcelain with uniform and complete ice cracks is obtained after firing, and a large amount of bubbles cannot appear in the final porcelain; the biscuit firing is gradually carried out from low temperature to high temperature after low temperature firing, medium temperature firing and high temperature firing, so that the glaze layer can be favorably adsorbed on the surface of the porcelain blank, bubbles in the glaze layer can be promoted to be discharged, a uniform and compact glaze surface is formed, the final glaze surface has high brightness, good transparency and good refraction and reflection effects on light.

In some embodiments, the bisque firing temperature is 850 to 880 ℃. The biscuit firing blank fired at the temperature can ensure that the prepared blank has good glossiness, the bonding degree of the fired blank and the glaze surface is high, and the glaze layer is convenient to hang on the wall, so that ice cracks formed by the subsequently fired porcelain are attractive and uniform.

In some embodiments, the mass ratio of the pebble, the glaze mixed raw material and the water is (1.5-2.5): (0.5-1.5): (0.2-1), the glaze grinding time is 18-20h, the ground glaze is further screened by 80-200 meshes, and the baume degree of the glaze slip is 45-52. The glaze can be broken uniformly by ball milling for 18-20h, the fineness of the glaze is further ensured, the treated glaze is fine and uniform, and can be uniformly distributed on a biscuit firing blank after being fired, and the obtained porcelain has high glossiness and good transparency during subsequent firing. In the baume degree range, the obtained glaze has a thickness just right, and the applicant finds that when the baume degree of the glaze is lower, glaze slurry is difficult to hang, the thickness cannot meet the requirement, and cracks on the surface of the porcelain can be broken during subsequent firing, so that the attractiveness of the porcelain is influenced; the higher baume degree can cause the glaze on the surface of the porcelain to be too thick, and the glaze can be unevenly distributed, so that the surface of the subsequently fired porcelain becomes colored, and cracks are not beautiful.

In some embodiments, the glazing of the biscuit is to coat the base glaze and then spray glaze on the surface, so that the thickness of the glaze layer on the biscuit is 2-3mm. The glaze layer with the thickness can ensure that the final finished product has good ice cracking effect and forms complete ice flower rose petals with stereoscopic impression.

In some embodiments, the ground glaze on the biscuit firing blank is obtained by glazing small devices by adopting a glaze dipping method, and glazing large devices by adopting an inner glaze swinging method and then outer glaze by adopting a glaze dipping method. The sizes are distinguished, glazing is carried out in different modes, so that the glaze layer on the surface of the porcelain can be uniformly attached and the thickness of the porcelain is proper no matter what size is glazed.

In some embodiments, the low-temperature firing is to uniformly heat up to 490-510 ℃ within 2-3h under the condition of opening a kiln door. When the low-temperature baking is carried out, the kiln door is opened for baking, so that the evaporation of water can be facilitated.

In some embodiments, the medium-temperature firing is to close the kiln door after the low-temperature firing, uniformly raise the temperature to 950-970 ℃ within 2-3 hours, and then keep the temperature for 45-75min, so that the kiln temperature is uniformly raised to 975-990 ℃. During middle-temperature firing, carbon elements, organic matters and sulfides in the biscuit and the glaze layer can be oxidized, carbonate can be decomposed, the crystal form of quartz can be changed, and bubbles generated during later firing are reduced.

In some embodiments, the high-temperature firing is carried out by heating to 1230-1270 ℃ at a speed of 1-1.5 ℃/min after the medium-temperature firing, keeping the temperature for 8-12min, and then extinguishing the fire; after the high-temperature firing, the kiln door is half opened, the temperature is reduced to 840-860 ℃, then the kiln door is closed, the temperature is reduced to 20-35 ℃, and the kiln is opened to obtain the crystal ice crack porcelain; the low-temperature firing, the medium-temperature firing and the high-temperature firing are all carried out in an oxidizing atmosphere. When the biscuit firing is fired at high temperature, liquid phase appears, the glaze layer starts to melt, and the treatment under the condition can improve the transparency and the glossiness of the fired porcelain and obtain a crystal-like light transmission refraction effect. After the porcelain is fired at high temperature, the kiln door is moved away to quickly cool the porcelain, liquid phase crystallization of a glaze layer is effectively prevented, and the glaze surface is slowly cooled to crystallize, so that the glossiness and transparency of the porcelain are influenced, and the quick cooling of the glaze surface can ensure that bubbles are not easy to grow up, so that the obtained porcelain has high attractiveness. When the temperature is reduced to 840-860 ℃, the glaze layer is solidified, the kiln door is closed at the moment, and the quality of the fired porcelain is not influenced after the kiln temperature is naturally cooled. The whole firing process is carried out in an oxidizing atmosphere, so that the fired porcelain has a bright color and high glossiness.

The features and properties of the present application are described in further detail below with reference to examples.

Example 1

A preparation method of crystal ice crack porcelain comprises the following steps:

glaze material: 2.8kg of potash feldspar, 2.8kg of albite, 1kg of limestone, 0.2kg of amethyst, 0.05kg of fluorite, 0.05kg of zinc oxide and 0.2kg of barium carbonate.

Blank material: 5.2kg of zijin soil (the mass ratio of the Shizizhu zijin soil to the Dajiao zijin soil is 1.

Grinding the blank raw material, adding water for wet grinding, then preparing blank mud, drying and forming, and placing the blank mud into a kiln for biscuiting at 850 ℃;

mixing the glaze raw materials, and then mixing the glaze raw materials according to the proportion of 1.5:0.5: performing wet ball milling on the mixed raw materials of the ball stone and the glaze and water according to the mass ratio of 0.2, grinding for 18 hours, and sieving by a 80-mesh sieve to obtain glaze slurry, wherein the baume degree of the glaze slurry is 45;

coating base glaze on the cooled biscuit, spraying glaze on the surface of the biscuit to ensure that the thickness of a glaze layer on the biscuit is 2-3mm, and scraping and washing the bottom feet of the biscuit;

and (3) putting the glazed biscuit into a kiln, firing in an oxidizing atmosphere, uniformly heating to 490 ℃ within 2h under the condition of opening a kiln door, then closing the kiln door, uniformly heating to 950 ℃ within 2h, then preserving heat for 45min, uniformly heating to 975 ℃ at the kiln temperature, then heating to 1230 ℃ at the speed of 1 ℃/min, preserving heat for 8min, extinguishing, opening the kiln door, cooling to 840 ℃, then closing the kiln door, cooling to 20 ℃, and opening the kiln to obtain the crystal ice porcelain cracks.

Example 2

glaze material: 3.6kg of potash feldspar, 3.6kg of albite, 1.2kg of limestone, 0.2kg of violet earth, 0.08kg of fluorite, 0.08kg of zinc oxide and 0.3kg of barium carbonate.

Blank material: 5.8kg of Zijin soil (the mass ratio of the Zijing soil of the lion cage to the Zijing soil of the large kiln is 1.

Grinding the blank raw material, adding water for wet grinding, then preparing blank mud, drying and forming, and placing the blank mud into a kiln for biscuiting at 860 ℃;

mixing the glaze raw materials, and then, mixing the glaze raw materials according to the ratio of 2:1: carrying out wet ball milling on the mixed raw materials of the ball stone and the glaze and water according to the mass ratio of 0.6, grinding for 19h, and sieving by a 150-mesh sieve to obtain glaze slurry, wherein the baume degree of the glaze slurry is 48;

and (3) putting the glazed biscuit into a kiln, firing in an oxidizing atmosphere, uniformly heating to 495 ℃ within 2.5h under the condition that a kiln door is opened, then closing the kiln door, uniformly heating to 955 ℃ within 2.5h, then keeping the temperature for 55min, uniformly heating to 980 ℃ at the speed of 1.3 ℃/min, then heating to 1250 ℃, keeping the temperature for 9min, extinguishing the fire, generally opening the kiln door, cooling to 850 ℃, then closing the kiln door, cooling to 25 ℃, and opening the kiln to obtain the crystal ice crack porcelain.

Example 3

A preparation method of the crystal ice crack porcelain comprises the following steps:

glaze material: 3.8kg of potash feldspar, 4kg of albite, 1.4kg of limestone, 0.3kg of purple gold soil, 0.08kg of fluorite, 0.08kg of zinc oxide and 0.4kg of barium carbonate.

Blank material: 6.5kg of Zijin soil (the mass ratio of the Zijing soil of the lion cage to the Zijin soil of the large kiln is 1.

Grinding the blank raw material, adding water for wet grinding, then preparing blank mud, drying and forming, and placing the blank mud into a kiln for biscuiting at 870 ℃;

mixing the glaze raw materials, and then, mixing the glaze raw materials according to the ratio of 2:1.2:8, performing wet ball milling on the mixed raw materials of the ball stone and the glaze and water according to the mass ratio of the ball stone to the glaze, grinding for 19 hours, and sieving by a 200-mesh sieve to obtain glaze slip, wherein the baume degree of the glaze slip is 50;

applying base glaze to the cooled biscuit, spraying glaze on the surface of the biscuit to ensure that the thickness of a glaze layer on the biscuit is 2-3mm, and scraping and washing the bottom feet of the biscuit;

and (3) putting the glazed biscuit into a kiln, firing in an oxidizing atmosphere, uniformly heating to 500 ℃ within 2.5h under the state that a kiln door is opened, then closing the kiln door, uniformly heating to 960 ℃ within 2.5h, then preserving heat for 60min, uniformly heating to 985 ℃ at the kiln temperature, then heating to 1260 ℃ at the speed of 1.5 ℃/min, preserving heat for 11min, extinguishing, opening the kiln door, cooling to 855 ℃, then closing the kiln door, cooling to 30 ℃, and opening the kiln to obtain the crystal ice crack porcelain.

The porcelain obtained in this example is shown in FIG. 1.

Example 4

glaze material: 4.2kg of potash feldspar, 4.2kg of albite, 1.6kg of limestone, 0.4kg of gilt clay, 0.1kg of fluorite, 0.1kg of zinc oxide and 0.5kg of barium carbonate.

Blank material: 6.8kg of Zijin soil (the mass ratio of the Zijing soil of the lion cage to the Zijin soil of the large kiln is 1.

Grinding the blank raw materials, adding water for wet grinding, then preparing blank mud, drying and forming, and placing the blank mud into a kiln for biscuiting at 880 ℃;

mixing the glaze raw materials, and then mixing the glaze raw materials according to the weight ratio of 2.5:1.5:1, ball milling the mixed raw materials of the ball stone and the glaze and water by a wet method, grinding for 20 hours, and sieving by a 200-mesh sieve to obtain glaze slurry, wherein the baume degree of the glaze slurry is 52;

and (3) putting the glazed biscuit into a kiln, firing in an oxidizing atmosphere, uniformly heating to 510 ℃ within 3h under the condition of opening a kiln door, then closing the kiln door, uniformly heating to 970 ℃ within 3h, then keeping the temperature for 75min, uniformly heating to 990 ℃ at the kiln temperature, then heating to 1270 ℃ at the speed of 1.5 ℃/min, keeping the temperature for 12min, extinguishing the fire, opening the kiln door, cooling to 860 ℃, then closing the kiln door, cooling to 35 ℃, and opening the kiln to obtain the crystal ice crack porcelain.

Example 5

This example is essentially the same as example 4, except that the raw material content is different.

glaze material: 5.2kg of potash feldspar, 5.2kg of albite, 2kg of limestone, 0.4kg of gilt clay, 0.15kg of fluorite, 0.15kg of zinc oxide and 0.6kg of barium carbonate.

Blank material: 7.8kg of zijin soil (the mass ratio of the Shizizhu zijin soil to the Dajiao zijin soil is 1.

Grinding the blank raw material, adding water for wet grinding, then preparing blank mud, drying and forming, and placing the blank mud into a kiln for biscuiting at 880 ℃;

and (3) putting the glazed biscuit into a kiln, firing in an oxidizing atmosphere, uniformly heating to 510 ℃ within 3h under the condition that a kiln door is opened, then closing the kiln door, uniformly heating to 970 ℃ within 3h, then preserving heat for 75min to uniformly heat the kiln to 990 ℃, then heating to 1270 ℃ at the speed of 1.5 ℃/min, preserving heat for 12min, extinguishing the fire, opening the kiln door normally, cooling to 860 ℃, then closing the kiln door, cooling to 35 ℃, and opening the kiln to obtain the crystal ice crack porcelain.

Comparative example 1

This comparative example is essentially the same as example 3, except that: the thickness of the glaze layer on the biscuit firing blank is 1-1.8mm. The resulting porcelain is shown in FIG. 2.

Comparative example 2

This comparative example is essentially the same as example 3, except that: when firing, the temperature is uniformly raised from room temperature to 1260 ℃ within 6h under the state that the kiln door is closed, then the temperature is lowered to 30 ℃ under the state that the kiln door is closed, and the quartz crystal ice crack porcelain is obtained after opening the kiln. The resulting finished product is shown in fig. 3.

Analyzing the figures 1-3, it can be seen that the ice cracks in figure 1 are beautiful and complete, have few bubbles, good glossiness and transparency, and have obvious rose patterns; the ice cracks in the graph in FIG. 2 are fine and broken, and the light transmission and refraction effects are poor, because the glaze on the surface of the biscuit obtained in the glazing process of the comparison document 1 is thin, the light transmission of the biscuit is also influenced while the ice cracking effect is influenced in the subsequent firing process, and the finished product has better quality and more attractive appearance in the graph in FIG. 1; comparing fig. 3 with fig. 1, it can be seen that fig. 3 clearly has many small bubbles, fine bubbles are distributed on the inner wall of the porcelain, and many pits are also formed thereon, and the obtained porcelain has poor ice cracking effect, because in comparative example 2, the conditions of temperature rise and temperature fall are changed during firing, which affects the oxidation effects of carbon elements, organic matters and sulfides in the biscuit and the glaze layer, the decomposition degree of carbonate is not enough, the crystal form transformation of quartz is less, and when the temperature rise is higher in the later stage, the melting effect of the glaze layer is poor, which affects the obtained ice cracking effect; and when the temperature is reduced, the temperature is slowly reduced under the state of closing the kiln door, so that the viscosity of the glaze is slowly reduced, bubbles are easy to grow up, and finally the obtained finished product looks like a plurality of large bubbles. Through the analysis contrast, can see out directly perceivedly, the porcelain's of this application preparation colour is bright, and the glossiness is high, and pleasing to the eye degree is also higher.

In conclusion, under the glaze material formula, the expansion coefficient of the glaze body can be matched properly, so that the ice cracking effect of the rose petals is formed, ice flowers are uniformly distributed on the whole glaze layer, and the ice flower rose petals are complete and have stereoscopic impression; moreover, the configuration can ensure that bubbles in the glaze layer are fine, rare and uniformly distributed, and the transparency is high; the addition of zinc oxide, barium carbonate and fluorite in the glaze increases the transparency of the glaze layer and enhances the glossiness of the glaze; the obtained glaze is pure and pure in tone and is matched with a blank body, so that the porcelain has good glossiness and attractive appearance, and the fired porcelain has the advantages of high mechanical strength, high hardness, good glossiness, good thermal stability and chemical stability and low cost of raw materials.

When the porcelain is prepared, the blank is made into a bisque-fired blank which is reddish brown, and the bisque-fired blank is matched with a glaze surface after being fired, so that the whole porcelain has good glossiness and can sparkle under the irradiation of sunlight; the glaze is uniformly fine by performing wet ball milling on the glaze, so that the surface glaze layer of a biscuit is ensured to be uniform and fine during subsequent glazing, the porcelain with uniform and complete ice cracks is obtained after firing, and a large amount of bubbles cannot appear in the final porcelain; the biscuit firing is gradually carried out from low temperature to high temperature after low temperature firing, medium temperature firing and high temperature firing, so that the glaze layer can be favorably adsorbed on the surface of the biscuit, bubbles in the glaze layer can be promoted to be discharged, a uniform and compact glaze surface is formed, the final glaze surface has high brightness, good transparency and good refraction and reflection effects on light.

The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

Claims

1. The crystal ice crack porcelain comprises a blank and a glaze, and is characterized in that the glaze comprises the following raw materials in parts by weight: 28-52 parts of potash feldspar, 28-52 parts of albite, 10-20 parts of limestone, 2-4 parts of violet gold soil, 0.5-1.5 parts of fluorite, 0.5-1.5 parts of zinc oxide and 2-6 parts of barium carbonate; the blank comprises the following raw materials in parts by weight: 52-78 parts of purple golden soil and 24-46 parts of kaolin;

the preparation method of the crystal ice crack porcelain comprises the following steps:

putting the glazed biscuit into a kiln for firing, cooling and opening the kiln after low-temperature firing, medium-temperature firing and high-temperature firing to obtain the crystal ice crack porcelain;

the low-temperature firing is to uniformly heat to 490-510 ℃ within 2-3h under the condition of opening a kiln door;

the medium-temperature firing is to close a kiln door after low-temperature firing, uniformly heat up to 950-970 ℃ within 2-3h, and then keep the temperature for 45-75min to uniformly heat up the kiln to 975-990 ℃;

the high-temperature firing is specifically that after the medium-temperature firing, the temperature is raised to 1230-1270 ℃ according to the speed of 1-1.5 ℃/min, the temperature is kept for 8-12min, and then flameout is carried out;

the glazing of the biscuit firing blank is to coat base glaze firstly and then spray glaze on the surface, so that the thickness of a glaze layer on the biscuit firing blank is 2-3mm;

after the high-temperature firing, the kiln door is opened half, the temperature is reduced to 840-860 ℃, then the kiln door is closed, the temperature is reduced to 20-35 ℃, and the kiln is opened to obtain the crystal ice crack porcelain; the low-temperature firing, the medium-temperature firing and the high-temperature firing are all performed in an oxidizing atmosphere.

2. The crystal ice crackle porcelain as claimed in claim 1, wherein said blank comprises the following raw materials in parts by weight: 58-72 parts of purple golden soil and 30-40 parts of kaolin; the glaze comprises the following raw materials in parts by weight: 36-44 parts of potash feldspar, 36-44 parts of albite, 12-18 parts of limestone, 2-4 parts of violet gold soil, 0.5-1.5 parts of fluorite, 0.5-1.5 parts of zinc oxide and 3-5 parts of barium carbonate.

3. The crystal ice crackle porcelain as claimed in claim 1, wherein said bisque firing temperature is 850-880 ℃.

4. The crystal ice crack porcelain according to claim 1, wherein the mass ratio of the pebble, the glaze mixed raw material and the water is (1.5-2.5): (0.5-1.5): (0.2-1), the glaze grinding time is 18-20h, the ground glaze is further screened by 80-200 meshes, and the baume degree of the glaze slip is 45-52.