CN107500534B

CN107500534B - Preparation method of glaze slip of flowing colored glaze pottery and firing method of flowing colored glaze pottery

Info

Publication number: CN107500534B
Application number: CN201710716633.6A
Authority: CN
Inventors: 舒文照
Original assignee: Huaning County Ningzhou Shushi Ceramic Craft Co Ltd
Current assignee: Huaning County Ningzhou Shushi Ceramic Craft Co Ltd
Priority date: 2017-08-21
Filing date: 2017-08-21
Publication date: 2020-03-27
Anticipated expiration: 2037-08-21
Also published as: CN107500534A

Abstract

The preparation method of the glaze slip of the flowing colored glaze pottery comprises two steps of raw material preparation and raw material mixing, wherein the raw material preparation comprises the following steps: clay treatment, plant ash treatment, soybean stalk ash treatment, rice washing water preparation, seven-color stone and agate stone treatment, mauve soil treatment, purchase of potash feldspar with the granularity of 200 meshes, barium carbonate, quartz sand and calcium carbonate for standby, and mixing and pulping, wherein the raw materials comprise, by weight, 35-40 parts of potash feldspar, 12-15 parts of quartz sand, 18-20 parts of calcium carbonate, 12-15 parts of clay, 4-6 parts of plant ash, 3-4 parts of soybean stalk ash, 2-2.5 parts of rice washing water, 10.5-11.5 parts of barium carbonate, 1.5-2 parts of seven-color stone, 1-1.5 parts of agate stone and 2.4-2.6 parts of purple laterite stone; the flowing glaze pottery is prepared by the following steps: preparing glaze slip, glazing, making flowing color, firing in a kiln, firing, heating, turning fire, extinguishing fire, firing again and closing the fire; the pottery fired by the scheme has rich colors, and the colored bands are smoothly fused, so that the pottery consumer market demand is met.

Description

Preparation method of glaze slip of flowing colored glaze pottery and firing method of flowing colored glaze pottery

Technical Field

The invention belongs to the technical field of pottery materials, and particularly relates to a preparation method of glaze slip of a flowing colored glaze pottery and a firing method of the flowing colored glaze pottery.

Background

The pottery is a device formed by kneading and molding clay or pottery clay and then firing, and with the continuous development and improvement of a pottery making process, people usually coat glaze on the surface of a pottery blank and draw patterns with a manual pen in the pottery firing process, so that the surface density of a fired pottery product is increased, and the appearance is more attractive. The glaze pottery with the artificial colored drawing has beautiful appearance, but the workload of workers for making the drawing is large, the artificial creation trace is obvious, and the glaze pottery lacks natural and primitive aesthetic feeling.

Disclosure of Invention

Aiming at the problems that the artificial colored glaze pottery in the prior art has large artificial drawing workload and lacks of natural and primitive aesthetic feeling, the invention provides a preparation method of glaze slip of the flow colored glaze pottery and a firing method of the flow colored glaze pottery, and solves the problems in the prior art.

The specific scheme of the invention is as follows: a preparation method of glaze slip of flowing colored glaze pottery comprises the following steps:

(A) clay treatment: collecting clay, i.e. white clay, standing in the open air for 2 years, drying in the sun before use, pulverizing with a dry ball mill, grinding, and sieving with a 180-mesh screen to remove coarse residue;

(B) treating plant ash: collecting plant ash, soaking in water at normal temperature for 5 days, filtering with 160 mesh filter cloth, standing the filtrate for 8 days, and collecting precipitate;

(C) treating soybean stem ash: collecting soybean stem ash, soaking in water at room temperature for 5 days, filtering with 160 mesh filter cloth, standing the filtrate for 8 days, and collecting precipitate;

(D) preparing rice washing water: mixing rice and water according to a weight ratio of 1: 2, mixing and stirring, taking the rice washing water once every 15 minutes, and taking the rice washing water twice in total, and mixing the obtained rice washing water for later use;

(E) treating seven-color stone and agate: collecting the seven-color stone, and mixing the seven-color stone and water according to a weight ratio of 1: adding the mixture into a wet ball mill according to the proportion of 1.8, grinding for 10 hours at a high speed, filtering by using 120-mesh filter cloth, standing the filtrate for 1 hour, taking the precipitate for later use, collecting agate stone, and treating the agate stone according to the same method as that of the colorful stone;

(F) purple red soil treatment: and (3) collecting the purple red soil, placing the purple red soil in the open air in dry weather for 8 days, and then mixing the purple red soil and water according to a weight ratio of 1: 1.6, adding the mixture into a wet ball mill for crushing and grinding, filtering the ground mixture by using 120-mesh filter cloth, standing the filtrate for 30 minutes, and taking the precipitate for later use;

(G) purchasing potassium feldspar with the granularity of 200 meshes, barium carbonate, quartz sand and calcium carbonate for later use;

(H) mixing raw materials, namely pulping: according to the weight parts, 35-40 parts of potassium feldspar, 12-15 parts of quartz sand, 18-20 parts of calcium carbonate, 12-15 parts of clay, 4-6 parts of plant ash, 3-4 parts of soybean stalk ash, 2-2.5 parts of rice washing water, 10.5-11.5 parts of barium carbonate, 1.5-2 parts of heptachromatic stone, 1-1.5 parts of agate and 2.4-2.6 parts of purple laterite are mixed and ground in a ball mill, then filtered by 180-mesh filter cloth, and the precipitate is taken after the filtrate is kept stand for 8 days, namely the glaze slip of the flowing color glaze.

The firing method of the flowing glaze pottery comprises the following steps:

(I) preparing glaze slip: adding water into the glaze slurry prepared in the step (H), and uniformly stirring the glaze slurry in a glaze slurry pool to ensure that the water content in the glaze slurry reaches 45%;

(J) glazing: taking out the greenware body after soaking the greenware body in the glaze slip, draining the redundant glaze slip on the greenware body, enabling the thickness of the glaze slip on the greenware body to be 2 millimeters on average, and naturally airing the greenware body indoors for 2 days;

(K) making a colorful plate: coating a fluid texture glaze slurry layer on the surface of the dried ceramic blank by spraying or brushing the glaze slurry obtained in the step (I) through a spray gun, and then naturally drying for 1 day indoors;

(L) firing in a kiln: moving the dried greenware body into a kiln for firing, wherein the initial temperature in the kiln is 38 ℃, four nozzles are respectively arranged on the left side and the right side of the greenware body, the left side is provided with a nozzle I, a nozzle II, a nozzle III and a nozzle IV, the right side is provided with a nozzle V, a nozzle VI, a nozzle VII and a nozzle VIII, the flame is 30 cm away from the surface of the greenware body when the nozzles fire, and a skylight in the kiln is fully opened;

(M) ignition: the flame of the burner in the kiln is upward and is arranged at two sides in the kiln body, a sealing door and a skylight in the kiln are opened, two burners of a diagonally upper burner I and a diagonally upper burner VIII are opened, the temperature in the kiln is uniformly raised to 200 ℃ within 4 hours, then the burners I, the burners IV, the burners V and the burners VIII are opened, and the temperature is uniformly raised to 600 ℃ from 200 ℃ within 6 hours;

(N) temperature rise: when the temperature in the kiln reaches 600 ℃, the fire nozzle is fully opened, and the temperature in the kiln is uniformly raised to 1000 ℃ within 4 hours;

(O) turning fire: closing a sealing door and a skylight in the kiln when the temperature in the kiln reaches 1000 ℃, uniformly raising the temperature in the kiln to 1200 ℃ within 3 hours, and then firing at the constant temperature for 50 minutes after the temperature reaches 1200 ℃;

(P) extinguishing the fire: opening all the skylight windows to cool the temperature in the kiln to 1080 ℃;

(Q) reignition: after the temperature in the kiln is cooled to 1080 ℃, firing the whole fire nozzle for 40 minutes while keeping the temperature in the kiln within the range of 1080-1200 ℃;

(R) fire stopping: and after the firing is finished, closing the fire, closing all the skylights, naturally cooling the temperature in the kiln to 50-80 ℃, and finishing firing the flowing glaze pottery.

The surface glaze layer of the fired glaze pottery can form a flowing color band on the surface of the glaze pottery due to the uneven surface glaze layer, wherein the yellow bean rod ash can form a brown yellow color band on the surface of the pottery, and the plant ash can form a blue white color band on the surface of the pottery; purple red clay, clay and quartz sand are mixed in the glaze slip, so that the melting viscosity of the glaze slip on the surface of the pottery is enhanced, the melting temperature of the glaze slip is increased, and a glaze layer has good thermal stability and chemical stability; the colorful stone can enhance the linear flow of the glaze slip to form golden lines and colorful color blocks; the agate component in the glaze slip can increase the color brightness of the glaze slip and form agate flowers on the surface of the glaze pottery; the potassium feldspar is mixed in the glaze slip, so that the expansibility of the glaze can be reduced, and the viscosity of a glaze layer can be improved; the glaze slip is mixed with calcium carbonate and barium carbonate, so that the strength and hardness of a glaze layer are enhanced, the binding property of blank glaze is improved, and the suspension property and the streamer property of the glaze layer are enhanced; the rice washing water of the first and second paths is weakly acidic about Ph5.6, so that the junctions between the color bands are fully fused, smoothly transited and integrated; the glaze slip sprayed or brushed on the surface of the glaze pottery can form a flowing color band after being fired, and natural and primitive flowing color lines are formed on the surface of the glaze pottery. The pottery colour that this scheme of adoption was fired is antiquated and not singly transfer again, and whole integration is smooth-going, need not to carry out artifical carving and handles, accords with pottery consumer market consumer aesthetic demand.

In the firing process, in the stages of firing and temperature rise, sufficient oxygen is supplied in the kiln, the flame mainly is oxidizing flame, the moisture in the ceramic body and the glaze layer is evaporated, and the melting combination of the ceramic body and the glaze layer is promoted; in the fire turning stage, the oxygen supply is insufficient in the kiln, the flame is mainly a reducing flame accompanied with smoke, ferric oxide contained in the blank glaze is reduced into ferric oxide, the ferric oxide and silicon dioxide are combined into cyan low-iron silicate, the blank sintering is promoted, the brightness is enhanced, the yellow bean rod ash forms a brown yellow color band on the surface of the glaze pottery, plant ash forms a blue and white color band on the surface of the glaze pottery, rice washing water promotes the fusion of the junction of the color bands, the color bands are smoothly transited and integrated, the glaze slurry color band flows linearly, gold lines and colorful color blocks are formed, and agate flowers are formed on the surface of the glaze pottery; in the flameout stage, the kiln is in a reduction state, the glaze layer is crystallized and vitrified, and the crystal grows to form a dense glaze layer; the strength of the blank body is improved in the reignition stage, the glaze layer shrinks, and the stable crystallization of the glaze layer is promoted; and in the fire stopping stage, the temperature is reduced, the blank is solidified, the glaze layer is cooled and crystallized in a liquid phase, the crystal form is fixed, and the firing is finished.

Drawings

FIG. 1 is a schematic diagram of a ceramic body and a burner during firing in a kiln, wherein (1) is a burner I, (2) is a burner II, (3) is a burner III, (4) is a burner IV, (5) is a burner V, (6) is a burner VI, (7) is a burner VII, (8) is a burner VIII, and (9) is a ceramic body.

Detailed Description

The first embodiment is as follows: the preparation method of the glaze slip of the flowing colored glaze pottery comprises the following steps:

(H) mixing raw materials, namely pulping: according to the weight parts, 35 parts of potassium feldspar, 12 parts of quartz sand, 18 parts of calcium carbonate, 12 parts of clay, 4 parts of plant ash, 3 parts of soybean stem ash, 2 parts of rice washing water, 10.5 parts of barium carbonate, 1.5 parts of colorful stone, 1 part of agate stone and 2.4 parts of mauve clay are put into a ball mill for mixing and grinding, then 180-mesh filter cloth is used for filtering, and the obtained filtrate is taken out after standing for 8 days, so that the precipitate is the glaze slurry of the flowing colored glaze pottery.

The firing method of the flowing glaze pottery comprises the following steps:

(J) glazing: taking out the greenware body after soaking the greenware body in a glaze slurry pool, draining redundant glaze slurry on the greenware body, wherein the thickness of the glaze slurry on the greenware body is up to 2 mm on average, and naturally airing the greenware body indoors for 2 days;

(L) firing in a kiln: the dried greenware body is moved into a kiln to be fired, the initial temperature in the kiln is 38 ℃, four fire nozzles are respectively arranged on the left side and the right side of the greenware body, the left side is provided with a fire nozzle I (1), a fire nozzle II (2), a fire nozzle III (3) and a fire nozzle IV (4), the right side is provided with a fire nozzle V (5), a fire nozzle VI (6), a fire nozzle VII (7) and a fire nozzle VIII (8), the flame is 30 cm away from the surface of the greenware body when the fire nozzles fire, and a skylight in the kiln is fully opened;

(M) ignition: the flame of a burner in the kiln is upward and is arranged at two sides in the kiln body, an inner sealing door and a skylight of the kiln are opened, two burners I (1) and VIII (8) on the opposite corners are opened, the temperature is raised to 200 ℃ in 4 hours, then the burners I (1), IV (4), V (5) and VIII (8) are opened, and the temperature is raised to 600 ℃ from 200 ℃ in 6 hours;

Example two: during pulping, according to parts by weight, 40 parts of potassium feldspar, 15 parts of quartz sand, 20 parts of calcium carbonate, 15 parts of clay, 6 parts of plant ash, 4 parts of soybean stem ash, 2.5 parts of rice washing water, 11.5 parts of barium carbonate, 2 parts of colorful stone, 1.5 parts of agate and 2.6 parts of mauve are put into a ball mill for mixing and grinding, then, 180-mesh filter cloth is used for filtering, and the obtained filtrate is taken out after standing for 8 days, and the precipitate is taken to be the glaze slurry of the flowing color glaze pottery. The rest of the steps are the same as the first embodiment.

Claims

1. The preparation method of the glaze slip of the flowing colored glaze pottery is characterized by comprising the following steps:

(H) mixing raw materials, namely pulping: according to the weight parts, 35-40 parts of potassium feldspar, 12-15 parts of quartz sand, 18-20 parts of calcium carbonate, 12-15 parts of clay, 4-6 parts of plant ash, 3-4 parts of soybean straw ash, 2-2.5 parts of rice washing water, 10.5-11.5 parts of barium carbonate, 1.5-2 parts of heptachromatic stone, 1-1.5 parts of agate and 2.4-2.6 parts of purple laterite are put into a ball mill to be mixed and ground, then 180-mesh filter cloth is used for filtering, and after the obtained filtrate is stood for 8 days, a precipitate is taken to obtain the glaze slip of the flowing colored glaze pottery.

2. The firing method of the flowing glaze pottery is characterized in that: the preparation method comprises the following steps:

(I) preparing glaze slip: adding water into the glaze slip prepared in the claim 1, and putting the glaze slip into a glaze slip pool to be uniformly stirred so that the water content in the glaze slip reaches 45%;

(J) glazing: soaking the greenware body in the glaze slip, taking out, draining the redundant glaze slip on the greenware body to enable the thickness of the glaze slip on the greenware body to be 2 mm on average, and naturally airing the greenware body indoors for 2 days;

(M) ignition: the flame of the burner in the kiln is upward and is arranged at two sides in the kiln body, an inner sealing door and a skylight of the kiln are opened, two burners I and VIII on the opposite corners are opened to heat up, the temperature in the kiln is uniformly raised to 200 ℃ within 4 hours, then the burners I, IV, V and VIII are opened, and the temperature is uniformly raised from 200 ℃ to 600 ℃ within 6 hours;