阅读说明：本技术 一种具有还原和氧化烧成相结合的窑变效果的陶土板及其制备方法和应用 (Argil plate with reduction and oxidation sintering combined transmutation effect and preparation method and application thereof ) 是由 邓伟平 张玉俊 于 2019-11-01 设计创作，主要内容包括：本发明公开了一种具有还原和氧化烧成相结合的窑变效果的陶土板及其制备方法和应用,主要包括红色陶土坯体,还包括依次设置于陶土坯体上的铁红釉和还原釉；通过制作红色陶土板坯体、制备铁红釉和还原釉、施釉、烧成、切割加工等步骤制成具有还原和氧化烧成相结合的窑变效果的陶土板,本陶土板比传统的陶土板颜色更加丰富,整体窑变色彩更加自然。(The invention discloses a pottery clay plate with a transmutation effect combining reduction and oxidation sintering as well as a preparation method and application thereof, and the pottery clay plate mainly comprises a red pottery clay blank body, and also comprises a red iron glaze and a reduction glaze which are sequentially arranged on the pottery clay blank body; the pottery clay plate with the transmutation effect combining reduction and oxidation firing is prepared by the steps of preparing a red pottery clay plate blank, preparing iron red glaze and reduction glaze, glazing, firing, cutting, processing and the like.)

1. A pottery clay plate with a transmutation effect combining reduction and oxidation firing is characterized in that: mainly comprises a red argil blank body, and also comprises a red iron glaze and a reduction glaze which are sequentially arranged on the argil blank body; the argil blank body is composed of the following raw materials in parts by weight: 35-45 parts of red mud, 7-15 parts of kaolin, 5-10 parts of quartz sand, 15-25 parts of albite, 3-6 parts of ferric oxide and 14-16 parts of water.

2. A ceramic plate having a combined reduction and oxidation firing transmutation effect as claimed in claim 1, wherein: the iron red glaze is prepared from the following raw materials in parts by weight: 20-30 parts of nepheline, 5-15 parts of kaolin, 20-30 parts of quartz sand, 10-20 parts of alumina, 10-15 parts of calcite, 5-10 parts of calcined zinc oxide, 5-15 parts of ferric oxide, 5-10 parts of zirconium silicate, 0.3 part of sodium carboxymethylcellulose and 0.2 part of sodium tripolyphosphate.

3. A ceramic plate having a combined reduction and oxidation firing transmutation effect as claimed in claim 1, wherein: the reduction glaze is prepared from the following raw materials in parts by weight: 30-40 parts of kaolin, 20-30 parts of quartz sand, 10-20 parts of alumina, 20-30 parts of carbon powder, 0.3 part of sodium carboxymethyl cellulose and 0.2 part of sodium tripolyphosphate.

4. A clay plate having a combined reductive and oxidative firing transmutation effect as claimed in any one of claims 1 to 3, wherein: the method comprises the following specific steps:

step 1, manufacturing a red argil plate blank; adding red mud, kaolin, quartz sand, albite, ferric oxide and water into a rotary stirrer in sequence according to the weight parts of raw materials of a ceramic plate blank to prepare mud fruits, then sending the mud fruits into a high-pressure extrusion molding machine to prepare corresponding ceramic plates, and then drying the corresponding ceramic plates in a drying kiln;

step 2, preparing iron red glaze; adding nepheline, kaolin, quartz sand, alumina, calcite, calcined zinc oxide, ferric oxide, zirconium silicate, sodium carboxymethylcellulose and sodium tripolyphosphate into a wet ball mill according to the weight parts of the raw materials of the iron oxide red glaze to prepare the iron oxide red glaze;

step 3, preparing a reduction glaze; adding kaolin, quartz sand, alumina, carbon powder, sodium carboxymethylcellulose and sodium tripolyphosphate into a wet ball mill according to the weight parts of the raw materials of the reduction glaze to prepare the reduction glaze;

step 4, glazing; adjusting the specific gravity of the iron red glaze to 1.55-1.6g/ml, then spraying the iron red glaze on the upper surface of the argil slab body, wherein the glazing amount is controlled to 6-6.5g/100 cm; then adjusting the specific gravity of the reduction glaze to 1.7-1.75g/ml, after the iron red glaze on the upper surface of the pottery clay slab body is dried, spraying the reduction glaze on the iron red glaze, and controlling the glazing amount to be 8-8.5g/100 cm;

step 5, firing; covering the glazed surface of one pottery clay plate blank on the glazed surface of the other pottery clay plate blank before firing, enabling the glazed surfaces of the two pottery clay plate blanks to be mutually attached, then entering a roller kiln for firing, controlling the highest firing temperature to be 1135-1145 ℃, and controlling the firing period to be 3-4 hours;

step 6, cutting and processing; and cutting the fired clay plate according to the required size.

5. Use of a clay plate as claimed in any one of claims 1 to 3 having a combined reductive and oxidative firing transmutation effect: the pottery clay plate with the kiln transformation effect combining reduction and oxidation sintering is applied to the field of building decorative plates.

Technical Field

The invention relates to the field of building decorative plate preparation, in particular to a pottery clay plate with a kiln transformation effect combining reduction and oxidation sintering, and a preparation method and application thereof.

Background

The dry-hanging ceramic plate as one of the decoration materials of modern external walls has the functions of environmental protection, safety, reliability, heat preservation and heat insulation. The early clay plate is prepared by adding a certain amount of pigment into a blank to color, and then adjusting the color of the clay plate in a roller kiln by adjusting the firing temperature and firing atmosphere of the roller kiln. The glaze spraying technology is gradually introduced into the production of the clay plate, and the clay plate manufactured by combining various glazes and glazing technologies has relatively rich color effects but does not have the transmutation effect of reduction and oxidation transition during sintering.

Chinese patent CN 107572799A discloses a transmutation glaze, which comprises 5-10 parts of Longyan wash mud, 30-40 parts of Inmondsite, 10-15 parts of calcite, 10-15 parts of calcium carbonate, 15-20 parts of quartz sand, 1-5 parts of talcum, 5-10 parts of plant ash, 10-15 parts of bone meal, 5-8 parts of ferric oxide, 5-8 parts of calcined zinc oxide, 5-10 parts of calcined spodumene, 4-5 parts of Suzhou soil, 1-3 parts of alumina and 10-15 parts of calcite, the application glaze has good effect of change, the glaze property is represented by the matt quartz sand in parts by weight in the process from matt and bright to semi-bright, the plant ash is mainly introduced with elements such as calcium and phosphorus and is a good cosolvent, certain suspension property is provided for glaze slurry, the melting temperature of the glaze and the high-temperature viscosity of the glaze can be reduced, simultaneously has the functions of emulsion and promotion of phase separation of jun glaze. The application is to realize transmutation by glaze.

Disclosure of Invention

The invention aims to increase the kiln-transmutation firing mode of the existing ceramic plate and provide a firing method combining oxidation and reduction effects, so that the color of the manufactured ceramic plate is richer and more natural.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a pottery clay plate with a transmutation effect combining reduction and oxidation firing mainly comprises a red pottery clay blank body, and also comprises a red iron glaze and a reduction glaze which are sequentially arranged on the pottery clay blank body; the argil blank body is composed of the following raw materials in parts by weight: 35-45 parts of red mud, 7-15 parts of kaolin, 5-10 parts of quartz sand, 15-25 parts of albite, 3-6 parts of ferric oxide and 14-16 parts of water.

Preferably, the iron oxide red glaze consists of the following raw materials in parts by weight: 20-30 parts of nepheline, 5-15 parts of kaolin, 20-30 parts of quartz sand, 10-20 parts of alumina, 10-15 parts of calcite, 5-10 parts of calcined zinc oxide, 5-15 parts of ferric oxide, 5-10 parts of zirconium silicate, 0.3 part of sodium carboxymethylcellulose and 0.2 part of sodium tripolyphosphate.

Preferably, the reduction glaze consists of the following raw materials in parts by weight: 30-40 parts of kaolin, 20-30 parts of quartz sand, 10-20 parts of alumina, 20-30 parts of carbon powder, 0.3 part of sodium carboxymethyl cellulose and 0.2 part of sodium tripolyphosphate.

A preparation method of a pottery clay plate with a transmutation effect combining reduction and oxidation sintering comprises the following specific steps:

step 1, manufacturing a red argil plate blank; adding red mud, kaolin, quartz sand, albite, ferric oxide and water into a rotary stirrer in sequence according to the weight parts of raw materials of a ceramic plate blank to prepare mud fruits, then sending the mud fruits into a high-pressure extrusion molding machine to prepare corresponding ceramic plates, and then drying the corresponding ceramic plates in a drying kiln;

step 2, preparing iron red glaze; adding nepheline, kaolin, quartz sand, alumina, calcite, calcined zinc oxide, ferric oxide, zirconium silicate, sodium carboxymethylcellulose and sodium tripolyphosphate into a wet ball mill according to the weight parts of the raw materials of the iron oxide red glaze to prepare the iron oxide red glaze;

step 3, preparing a reduction glaze; adding kaolin, quartz sand, alumina, carbon powder, sodium carboxymethylcellulose and sodium tripolyphosphate into a wet ball mill according to the weight parts of the raw materials of the reduction glaze to prepare the reduction glaze;

step 4, glazing; adjusting the specific gravity of the iron red glaze to 1.55-1.6g/m, then spraying the iron red glaze on the upper surface of the argil slab body, wherein the glazing amount is controlled to 6-6.5g/100 cm; then adjusting the specific gravity of the reduction glaze to 1.7-1.75g/ml, after the iron red glaze on the upper surface of the pottery clay slab body is dried, spraying the reduction glaze on the iron red glaze, and controlling the glazing amount to be 8-8.5g/100 cm;

step 5, firing; covering the glazed surface of the pottery clay plate on the glazed surface of the other pottery clay plate before firing, enabling the glaze surfaces of the two pottery clay plate blanks to be mutually attached, then firing in a roller kiln, controlling the highest firing temperature to be 1135 and 1145 ℃, and controlling the firing period to be 3-4 hours;

step 6, cutting and processing; and cutting the fired clay plate according to the required size.

The application of a pottery clay plate with a transmutation effect combining reduction and oxidation firing comprises the following steps: the pottery clay plate with the kiln transformation effect combining reduction and oxidation sintering is applied to the field of building decorative plates.

The invention has the beneficial effects that:

firstly, the method comprises the following steps: the argil plate with the effect of combining reduction firing and oxidation firing, which is provided by the invention, introduces iron oxide red glaze and reduction glaze, and is matched with the argil plate firing method, so that the fired argil plate has richer colors and more natural overall transmutation colors compared with the traditional argil plate;

secondly, the method comprises the following steps: the invention provides a fire method of a brand new clay plate, which combines the methods of iron oxide red glaze, reduction glaze and cover firing, wherein the cover firing is to mutually laminate the glaze surfaces of two clay plate blanks before firing, and then fire, carbon powder in the reduction glaze forms carbon monoxide due to insufficient oxidation because of insufficient oxygen entering the middle of the clay plate blank during the cover firing, the carbon monoxide can react with ferric oxide in the iron oxide red glaze to form ferroferric oxide, and different air entering amounts (more edges and less middle) in different areas during the cover firing can cause different amounts of the ferroferric oxide, so that a gradient color from red oxide to black reduction can be formed, the gradient color is natural in transition, and two different firing effects can be simultaneously presented on the surface of the same brick;

thirdly, the method comprises the following steps: the invention takes the iron oxide red glaze as the basic glaze for color development, mainly the iron oxide red glaze has strong color contrast when being fired in oxidizing and reducing atmosphere, and the specific color generation mechanism of the iron oxide red glaze is as follows: the ferric oxide is generally added into the glaze in the form of ferric oxide, a part of oxygen is released at high temperature to become ferrous oxide, the ferrous oxide is a strong solvent and is beneficial to the melting of the glaze, when the ferric oxide is oxidized and fired, the glaze is mainly red, when the ferric oxide is reduced and fired, more ferrous oxide is generated, the glaze is easier to melt, and when ferric iron and ferrous iron coexist, the glaze is light blue to dark black.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below.

The first embodiment is as follows:

a pottery clay plate with a transmutation effect combining reduction and oxidation firing mainly comprises a red pottery clay blank body, and also comprises a red iron glaze and a reduction glaze which are sequentially arranged on the pottery clay blank body; the argil blank body is composed of the following raw materials in parts by weight: 38 parts of red mud, 9 parts of kaolin, 9 parts of quartz sand, 19 parts of albite, 6 parts of iron red pigment and 14 parts of water.

Preferably, the reduction glaze consists of the following raw materials in parts by weight: 32 parts of kaolin, 28 parts of quartz sand, 13 parts of alumina, 27 parts of carbon powder, 0.2 part of sodium carboxymethyl cellulose and 0.3 part of sodium tripolyphosphate;

preferably, the iron oxide red glaze consists of the following raw materials in parts by weight: 22 parts of nepheline, 7 parts of kaolin, 22 parts of quartz sand, 12 parts of alumina, 12 parts of calcite, 7 parts of calcined zinc oxide, 10 parts of ferric oxide, 8 parts of zirconium silicate, 0.3 part of sodium carboxymethylcellulose and 0.2 part of sodium tripolyphosphate.

A preparation method of a pottery clay plate with a transmutation effect combining reduction and oxidation sintering comprises the following specific steps:

step 1, manufacturing a red argil plate blank; adding red mud, kaolin, quartz sand, albite, ferric oxide and water into a rotary stirrer in sequence according to the weight parts of raw materials of a ceramic plate blank to prepare mud fruits, then sending the mud fruits into a high-pressure extrusion molding machine to prepare corresponding ceramic plates, and then drying the corresponding ceramic plates in a drying kiln;

step 2, preparing iron oxide red glaze, namely adding nepheline, kaolin, quartz sand, alumina, calcite, calcined zinc oxide, ferric oxide, zirconium silicate, sodium carboxymethyl cellulose and sodium tripolyphosphate into a wet ball mill according to the weight parts of the raw materials of the iron oxide red glaze to prepare the iron oxide red glaze, wherein the materials in the wet ball mill are as follows: ball: the proportion of water is 2:1:1.2, and the grinding time is 2 hours;

step 3, preparing a reduction glaze, namely adding kaolin, quartz sand, alumina, carbon powder, sodium carboxymethylcellulose and sodium tripolyphosphate into a wet ball mill according to the weight parts of the raw materials of the reduction glaze to prepare the reduction glaze, wherein the wet ball mill comprises the following materials: ball: the proportion of water is 2:1:1.2, and the grinding time is 1.5 hours;

step 4, glazing, namely adjusting the specific gravity of the iron red glaze to 1.6g/m, then spraying the iron red glaze on the upper surface of the argil slab body, wherein the glazing amount is controlled to be 6g/100 cm; adjusting the specific gravity of the reduction glaze to 1.75g/ml, after the iron red glaze on the upper surface of the pottery clay slab body is dried completely, spraying the reduction glaze on the iron red glaze, wherein the glazing amount is controlled to be 8g/100 cm;

step 5, firing, namely covering the glazed surface of one clay plate blank on the glazed surface of the other clay plate blank before firing, mutually jointing the glazed surfaces of the two clay plate blanks, then placing the clay plate blanks into a roller kiln for firing, and controlling the temperature at 18 ℃/min in the rapid heating stage to rise to 500 ℃; slowly raising the temperature to 1135 ℃ while controlling the temperature to be 8 ℃/min; keeping the temperature at the highest temperature for 10 min; the temperature reduction is divided into three stages, the slow temperature reduction is controlled at 3 ℃/min and is reduced to 1070 ℃, then the temperature is rapidly reduced to 600 ℃ at 50 ℃/min, and then the temperature is gradually and slowly reduced to 200 ℃ and is taken out of the kiln.

And 6, cutting, namely cutting the fired brick according to the required size.

The invention provides a novel clay plate manufacturing method, wherein the clay plate with the effect of combining reduction and oxidation firing introduces iron oxide red glaze and reduction glaze which are uniquely configured, and the glaze effect of the surface of the manufactured clay plate is richer by matching with the clay plate firing method provided by the invention, the colors are gradually changed from the reduction color to the oxidation color, and the artistic effect is stronger.

The embodiments described above are only a part of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.