Energy-saving ceramic color glaze formula and glazing process thereof

Abstract

The invention discloses an energy-saving ceramic color glaze which comprises a blank and a glaze material, the glaze material at least comprises feldspar, quartz, calcite, glass powder, lepidolite and copper functional material soil, and due to the use of the lepidolite and the glass powder, the firing temperature of the glaze material is greatly reduced; the glaze material at least comprises SiO2, Al2O3, CaO, MgO, K2O, Na2O and Li2O; by using the formula, the subsequent firing temperature can be effectively reduced, and a large amount of energy is saved; the invention further discloses a glazing process of the energy-saving ceramic color glaze, in the second step, the glaze in the first step is put into a ball mill to be subjected to ball milling, the proportion of the glaze to balls to water is 1: (1.45-2.13): (0.625-0.814), and glaze slip formed according to the proportion is uniform in texture.

Description

Technical Field

[0001] The invention relates to the field of ceramic production, in particular to an energy-saving ceramic color glaze formula and a glazing process thereof. Background Art

[0002] Colored glaze refers to ceramic products that contain metal oxides as colorants in the glaze and are fired at a certain temperature. Colored glaze is popular among consumers because of its bright appearance. Colored glazes are divided into monochrome glazes, multi-color glazes, crackle glazes, matte glazes, crystal glazes, etc. according to their appearance.

[0003] These colored glazes are generally fired at a high temperature of at least 1250°C. Under the current colored glaze production process and related formula usage, the energy consumption is very huge. Therefore, it is hoped that the energy saving effect can be achieved by optimizing the formula and production process of the colored glaze. Summary of the invention

[0004] The object of the present invention is to provide an energy-saving ceramic colored glaze formula and a glazing process thereof, so as to overcome the above-mentioned defects in the prior art.

[0005] The present invention provides an energy-saving ceramic colored glaze, which comprises a blank and a glaze;

[0006] The glaze contains at least feldspar, quartz, calcite, glass powder, lithium mica, and Tongguan clay. Due to the use of lithium mica and glass powder, the firing temperature of the glaze is greatly reduced.

[0007] The glaze contains at least 52-60% SiO 2， 13-16% Al2O3, 9-12.5% ​​CaO, 0.175-0.375% MgO, 5.45-6.125% K2O, 5.77-6.37% Na2O and 0.95-1.13% Li2O; the use of this formula can effectively reduce the subsequent firing temperature and save a lot of energy.

[0008] Preferably, in order to achieve the ratio of various color glazes, a colorant is added to the above glaze, and the colorant includes a metal oxide and a color base.

[0009] Preferably, the raw materials for making the blank include Guanchongao clay, Yanglin mud, Yiyang mud, bisque-fired flakes, feldspar, and talc. Guanchongao clay and Yanglin mud are local materials with low cost, which can effectively reduce the cost of ceramic production.

[0010] Preferably, since Guanchongao clay and Yanglin mud have more organic matter, large loss on ignition, large shrinkage on firing, and are prone to deformation, the above-mentioned Yiyang mud with poor plasticity and loss on ignition is added, and bisque sheets are provided to reduce shrinkage on firing and overcome deformation.

[0011] Preferably, adding feldspar, talc and other solvent raw materials to the blank is helpful for low temperature sintering.

[0012] Preferably, a glazing process for energy-saving ceramic colored glaze is provided, which comprises the following production steps:

[0013] Step 1: Prepare color glaze according to the required formula and proportion;

[0014] Step 2: Put the glaze in step 1 into a ball mill for ball milling. The ratio of glaze, ball and water is 1:1.45-2.13:0.625-0.814. The glaze slurry formed by this ratio has a uniform texture and a 0.045-0.092% residue on a 10,000-hole sieve.

[0015] Step 3: After ball milling, the glaze slurry is sieved and the moisture content is controlled at 39-48.5%;

[0016] Step 4: Carry out glazing operation;

[0017] Step 5: Load the blank into a kiln for firing, and the firing temperature is controlled at 1100-1200°C.

[0018] Preferably, in step 2, a suspending agent may be added to accelerate the ball milling speed so that the ball milling time can be controlled within 11-19 hours.

[0019] Preferably, in step 4, the glaze is poured by a machine wheel for bowls and plates; for cups, the inner glaze is glazed by a ball machine, and the outer glaze is glazed by dipping or spraying; for special-shaped handicrafts, a combination of spraying, coating, dotting and pouring glaze is used.

[0020] The beneficial effects of the present invention are:

[0021] 1. The glaze of the present application contains at least feldspar, quartz, calcite, glass powder, lithium mica, and Tongguan clay. Due to the use of lithium mica and glass powder, the firing temperature of the glaze is greatly reduced, saving energy.

[0022] 2. The glaze contains at least 52-60% SiO 2， 13-16% Al2O3, 9-12.5% ​​CaO, 0.175-0.375% MgO, 5.45-6.125% K2O, 5.77-6.37% Na2O and 0.95-1.13% Li2O; the use of this formula can effectively reduce the subsequent firing temperature and save a lot of energy.

[0023] 3. The glaze is put into a ball mill for ball milling. The ratio of glaze, ball and water is 1:1.45~2.13:0.625-0.814. The glaze slurry formed by this ratio has a uniform texture.

[0024] 4. The raw materials for making the blanks include Guanchongao clay, Yanglin mud, Yiyang mud, unglazed flakes, feldspar, and talc. Guanchongao clay and Yanglin mud are local materials with low costs, which can effectively reduce the cost of ceramic production.

[0025] 5. Since the Guanchongao clay and Yanglin mud contain more organic matter, large ignition loss, large firing shrinkage, and easy deformation, the above-mentioned Yiyang mud with poor plasticity and ignition loss is added, and bisque sheets are provided to reduce firing shrinkage, overcome deformation, and ensure the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the firing curve diagram of the present application; DETAILED DESCRIPTION

[0027] In order to make the objects and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0028] Example 1

[0029] This embodiment provides an energy-saving ceramic colored glaze, which includes a blank and a glaze;

[0030] The raw materials for making the blank include Guanchong'ao clay, Yanglin mud, Yiyang mud, unglazed flakes, feldspar, and talc. Guanchong'ao clay and Yanglin mud are local materials with low cost, which can effectively reduce the production cost of ceramics. Guanchong'ao clay and Yanglin mud at least include SiO2, TiO2, Al2O3, CaO, MgO, K2O, Na2O, and Fe2O3.

[0031] Since Guanchongao clay and Yanglin clay have more organic matter, large ignition loss, large firing shrinkage, and easy deformation, the above-mentioned Yiyang clay with poor plasticity and ignition loss is added, and bisque-fired sheets are provided to reduce firing shrinkage and overcome deformation;

[0032] Yiyang mud contains at least SiO2, TiO2, Al2O3, CaO, MgO, K2O, Na2O, Fe2O 3， The proportion of SiO2 in Yiyang mud is more than 70%; the unglazed tile is a kind of wall tile, which at least includes SiO2, Al2O3, CaO, MgO, K2O, Na2O, Fe2O 3；

[0033] Adding solvent materials such as feldspar and talc helps low-temperature sintering.

[0034] The glaze contains at least feldspar, quartz, calcite, glass powder, lithium mica, and Tongguan clay. Due to the use of lithium mica and glass powder, the firing temperature of the glaze is greatly reduced.

[0035] The glaze contains at least 52-60% SiO 2， 13-16% Al2O3, 9-12.5% ​​CaO, 0.175-0.375% MgO, 5.45-6.125% K2O, 5.77-6.37% Na2O and 0.95-1.13% Li2O; the use of this formula can effectively reduce the subsequent firing temperature and save a lot of energy. The glass powder at least includes SiO2, Al2O3, CaO, MgO, K2O, Na2O, Fe2O3, Li2O; the glass powder at least includes SiO2, Al2O3, CaO, MgO, K2O, Na2O;

[0036] In order to achieve the proportion of various color glazes, colorants are added on the basis of the above glazes, and the colorants include metal oxides and color bases.

[0037] Example 2

[0038] Based on the technology of Example 1, this example further provides an energy-saving ceramic colored glaze glazing process, which includes the following production steps:

[0039] Step 1: Prepare color glaze according to the required formula and proportion;

[0040] Step 2: Put the glaze in step 1 into a ball mill for ball milling. The ratio of glaze, ball and water is 1:1.45-2.13:0.625-0.814. The glaze slurry formed by this ratio has a uniform texture and a 0.045-0.092% residue on a 10,000-hole sieve.

[0041] Step 3: After ball milling, the glaze slurry is sieved and the moisture content is controlled at 39-48.5%;

[0042] Step 4: Carry out glazing operation;

[0043] Step 5: Load the blank into a kiln for firing, and the firing temperature is controlled at 1100-1200°C.

[0044] In step 2, a suspending agent may be added to speed up the ball milling process so that the ball milling time can be controlled within 11-19 hours.

[0045] In step four, the glaze is poured by machine wheel for bowls and plates; for cups, the inner glaze is glazed by ball machine, and the outer glaze is glazed by dipping or spraying; for special-shaped handicrafts, a combination of spraying, coating, dotting and pouring glaze is used.

[0046] It will be clear to those skilled in the art that various modifications to the above embodiments may be made without departing from the overall spirit and concept of the present invention. All of these modifications fall within the scope of protection of the present invention. The protection scheme of the present invention shall be subject to the claims attached to the present invention.

Claims

1. An energy-saving ceramic colored glaze, comprising a blank and a glaze, characterized in that: The glaze contains at least feldspar, quartz, calcite, glass powder, lithium mica, and Tongguan clay. Due to the use of lithium mica and glass powder, the firing temperature of the glaze is greatly reduced; The glaze contains at least 52-60% SiO2, 13-16% Al2O3, 9-12.5% ​​CaO, 0.175-0.375% MgO, 5.45-6.125% K2O, 5.77-6.37% Na2O and 0.95-1.13% Li2O; the use of this formula can effectively reduce the subsequent firing temperature and save a lot of energy.

2. The energy-saving ceramic colored glaze according to claim 1, characterized in that: A colorant is added to the glaze, wherein the colorant includes a metal oxide and a color base.

3. The energy-saving ceramic colored glaze according to claim 1, characterized in that: The raw materials for making the blank include Guanchongao clay, Yanglin mud, Yiyang mud, unglazed flakes, feldspar, and talc. Guanchongao clay and Yanglin mud are local materials with low costs, which can effectively reduce the cost of ceramic production.

4. The energy-saving ceramic colored glaze according to claim 3, characterized in that: Since the Guanchongao material soil and Yanglin mud contain more organic matter, large ignition loss, large firing shrinkage, and are prone to deformation, the above-mentioned Yiyang mud with poor plasticity and ignition loss is added, and bisque sheets are provided to reduce firing shrinkage and overcome deformation.

5. The energy-saving ceramic colored glaze according to claim 4, characterized in that: Adding feldspar, talc and other solvent raw materials to the blank helps low-temperature sintering.

6. A glazing process for the energy-saving ceramic colored glaze according to claim 1, comprising the following production steps: Step 1: Prepare color glaze according to the required formula and proportion; Step 2: Put the glaze in step 1 into a ball mill for ball milling. The ratio of glaze, ball and water is 1:1.45-2.13:0.625-0.

814. The glaze slurry formed by this ratio has a uniform texture and a 0.045-0.092% residue on a 10,000-hole sieve. Step 3: After ball milling, the glaze slurry is sieved and the moisture content is controlled at 39-48.5%; Step 4: Carry out glazing operation; Step 5: Load the blank into a kiln for firing, and the firing temperature is controlled at 1100-1200°C.

7. The glazing process according to claim 6, characterized in that: In step 2, a suspending agent may be added to speed up the ball milling process so that the ball milling time can be controlled within 11-19 hours.

8. The glazing process according to claim 6, characterized in that: In step four, the glaze is poured by machine wheel for bowls and plates; for cups, the inner glaze is glazed by ball machine, and the outer glaze is glazed by dipping or spraying; for special-shaped handicrafts, a combination of spraying, coating, dotting and pouring glaze is used.

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