Imitation glazed ceramic with malachite green eye spots and preparation method thereof

Abstract

The invention relates to the field of ceramic manufacturing, in particular to ceramic-imitating glazed ceramic with malachite green eye spots, which comprises a green body and a ceramic-imitating glaze covered on the green body, the malachite green eye spots are distributed on the ceramic-imitating glaze, and the main body of the glaze has a ceramic-imitating and antique glaze effect with matte texture, iron rusty spots, natural flowing sense and crack effect. The speckle-forming particles are quickly melted in a high-temperature kiln and uniformly cover the ceramic surface, and the speckle-forming particles are preheated before entering the kiln and can be quickly melted after being attached to the glaze surface, so that glassy malachite green eye spots are formed, and the whole speckle-forming ceramic has unique aesthetic feeling.

Description

Technical Field

[0001] The invention relates to the field of ceramic manufacturing, and in particular to pottery-like glazed ceramics with peacock green eye spots and a preparation method thereof. Background Art

[0002] In order to obtain a ceramic-like glaze effect, traditional crafts often use wood-firing. Wood is the raw material. During the wood-firing process, the flame licks the body, leaving natural fire marks. The fire marks in different parts vary in depth and width, forming flowing lines and patterns. Wood-fired works retain the original texture of the soil, with an uneven surface and traces of manual labor, presenting a simple, rugged and natural beauty. However, the entire process of wood-firing requires a large amount of wood, with high carbon emissions. In addition, the glaze after wood-firing is rough and uneven, and the glaze cannot present other bright patterns. In view of this, this case came into being. Summary of the invention

[0003] An object of the present invention is to solve at least the above-mentioned problems by means of a pottery-like glazed ceramic with malachite green eye spots and a method for preparing the same.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is as follows: a pottery-like glazed ceramic with peacock green eye spots comprises a body and a pottery-like glaze covering the body, wherein the pottery-like glaze is distributed with peacock green eye spots.

[0005] Preferably, the raw materials of the green body include the following components in parts by weight: 35-40 parts of kaolin, 25-30 parts of feldspar, 5-12 parts of talc, 20-25 parts of quartz, and 5-8 parts of bentonite.

[0006] Preferably, the raw material of the imitation pottery glaze is an imitation pottery glaze, and the raw materials of the imitation pottery glaze include the following components in parts by weight: 45-48 parts of potassium feldspar, 20-24 parts of quartz, 10-14 parts of Suzhou kaolin, 8-12 parts of zircon, 5-8 parts of limestone, 2-3 parts of zinc oxide, 6-8 parts of calcined talc, 1-1.5 parts of bone ash, and 3-4 parts of iron oxide.

[0007] Preferably, the raw material of the malachite green eye spot is spot-forming particles, which include the following components in parts by weight: 40-45 parts of borate, 5-8 parts of quartz, 12-14 parts of feldspar, 8-12 parts of kaolin, 5-7 parts of aluminum oxide, 6-8 parts of calcium oxide, 1-2 parts of magnesium oxide, 2-3 parts of potassium oxide, 1-2 parts of sodium oxide, 1-2 parts of ferric oxide, 3-4 parts of copper oxide, 3-4 parts of chromium oxide, 5-6 parts of antimony ore, 2-3 parts of ammonium hexafluorozirconate and 2-3 parts of niobium pentoxide.

[0008] Preferably, the particle size of the spot-forming particles is 1-1.5 mm.

[0009] The method for preparing the pottery-like glazed ceramic with peacock green eye spots comprises the following steps:

[0010] Step a, preparing green body raw materials, imitation pottery glaze and speckled particles;

[0011] Step b, forming a green body, drying and then biscuit firing;

[0012] Step c, applying imitation pottery glaze on the body;

[0013] Step d, putting the glaze into the kiln for glaze firing, during which the speckled particles are introduced into the kiln through a blower for continued firing, and the finished product is obtained after cooling.

[0014] Preferably, in step a, the method for preparing the spot-forming particles comprises the following steps:

[0015] Step 1: Mix and stir the raw materials according to proportion;

[0016] Step 2: heating the mixed raw materials to 1200-1250 degrees Celsius, and then quenching and crushing;

[0017] Step 3: Select the speckled particles with a particle size of 1-1.5 mm through screening.

[0018] Preferably, in the step b, the biscuit sintering temperature is 800-850 degrees Celsius, and in the step d, the firing temperature is 1200-1250 degrees Celsius.

[0019] Preferably, in step d, the kiln is heated by natural gas, and after the kiln reaches the firing temperature, the preheated spot particles are added into the kiln through a preheater, and the firing temperature is maintained for 2-3 hours before cooling.

[0020] Preferably, the kiln is provided with a preheater near the top, and a preheating chamber is provided in the preheater. After the spotted particles enter the preheating chamber, they are blown toward the flame nozzle in the preheating chamber by a blower. After being burned by the flame nozzle, the spotted particles enter the interior of the kiln.

[0021] From the above description, it can be seen that the pottery-like glazed ceramics with peacock green eye spots and the preparation method thereof provided by the present invention have the following beneficial effects: the main body of the glaze is a pottery-like, antique glaze effect with a matte texture, rust spots, natural flow and crack effect, the spotted particles are quickly melted in a high-temperature kiln and evenly covered on the ceramic surface, and the spotted particles are preheated before entering the kiln, and can quickly melt after adhering to the glaze surface to form glassy peacock green eye spots, which have a unique overall aesthetic. DETAILED DESCRIPTION

[0022] The present invention is further described below through specific implementation modes.

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] The pottery-like glazed ceramic with peacock green eye spots of the invention comprises a body and a pottery-like glaze surface covered on the body, wherein the pottery-like glaze surface is distributed with peacock green eye spots.

[0025] The raw materials of the green body include the following components in parts by weight: 35-40 parts of kaolin, 25-30 parts of feldspar, 5-12 parts of talc, 20-25 parts of quartz and 5-8 parts of bentonite.

[0026] The raw material of the imitation pottery glaze is imitation pottery glaze, which includes the following components by weight: 45-48 parts of potassium feldspar, 20-24 parts of quartz, 10-14 parts of Suzhou kaolin, 8-12 parts of zircon, 5-8 parts of limestone, 2-3 parts of zinc oxide, 6-8 parts of calcined talc, 1-1.5 parts of bone ash, and 3-4 parts of iron oxide. In the formula of imitation pottery glaze, potassium feldspar is the main solvent, which can reduce the melting temperature of glaze and promote the formation of glass phase. Quartz provides SiO2 to enhance the hardness and heat resistance of glaze. Suzhou kaolin provides Al2O3 to adjust the suspension of glaze slurry and improve the bonding strength between glaze layer and body. Zircon is an emulsifier to increase the hiding power of glaze. Limestone is an auxiliary flux to adjust the high-temperature fluidity of glaze. The content of Al2O3 and SiO2 in glaze is increased in the formula to inhibit the excessive formation of glass phase. Zinc oxide is added to promote the precipitation of microcrystals to form a matte texture. The high specific gravity quartz is used to increase the difference in thermal expansion coefficient between glaze and body. When cooling, the glaze layer is subjected to tensile stress and cracks are formed. At the same time, the added bone ash contains Ca3(PO4)2, which promotes the uniform distribution of cracks through the phosphorus element, so the glaze surface has uniform antique cracks; iron oxide is added, which reacts with the glaze at high temperature to form reddish-brown spots, simulating the ash falling effect of ancient wood-fired kilns. Combined with wood ash to replace part of the feldspar, the natural flow of the glaze is enhanced, so the glaze surface has rust spots; in summary, the overall glaze surface presents an imitation pottery and antique glaze effect with matte texture, rust spots, natural flow and crack effect. There is no need to rely on traditional wood-fired methods to obtain similar effects, which is more in line with the environmental protection concept of the new era.

[0027] The raw material of malachite green eye spot is spot-forming particles, which include the following components in parts by weight: 40-45 parts of borate, 5-8 parts of quartz, 12-14 parts of feldspar, 8-12 parts of kaolin, 5-7 parts of aluminum oxide, 6-8 parts of calcium oxide, 1-2 parts of magnesium oxide, 2-3 parts of potassium oxide, 1-2 parts of sodium oxide, 1-2 parts of ferric oxide, 3-4 parts of copper oxide, 3-4 parts of chromium oxide, 5-6 parts of antimony ore, 2-3 parts of ammonium hexafluorozirconate and 2-3 parts of niobium pentoxide. After being burned and heated by the preheater, the spot particles can be raised to 800-900 degrees Celsius. After entering the kiln, they adhere to the glaze surface to form malachite green eye spots. The antimony ore, ferric oxide, copper oxide, and chromium oxide in the formula are colorants, which make the glaze surface where the spot particles adhere to show malachite green eye spots. Ammonium hexafluorozirconate and niobium pentoxide increase the opacifying effect and color stability. A high proportion of borates can reduce the melting temperature of the spot particles, so that the spot particles can melt quickly in the high-temperature kiln and evenly cover the ceramic surface. , plus the spotted particles are preheated before entering the kiln, and can quickly melt after adhering to the glaze surface to form glassy peacock green eye spots. The peacock green eye spots extend under the action of gravity to form an elliptical shape, so they are shaped like eyes and appear peacock green. There are many such spots distributed on the basis of the imitation pottery glaze, which has a unique overall beauty. The surface of traditional wood-fired ceramics cannot present patterns of bright colors, and the present invention combines the glaze effect of antique imitation pottery with the bright pattern of peacock green eye spots, breaking through the limitations of traditional craftsmanship.

[0028] The particle size of the speckled particles is 1-1.5mm. After being blown into the kiln, the speckled particles are distributed in dots on the surface of the ceramic body. After firing, there are dotted peacock green eye spots on the glaze surface. The specific distribution position of the speckled particles on the glaze surface is related to the placement of the ceramic in the kiln. Among the stacked ceramics, the closer to the outside, the denser the distribution of peacock green eye spots, and they are concentrated on the glaze surface near the outside.

[0029] The method for preparing a pottery-like glazed ceramic with peacock green eye spots comprises the following steps:

[0030] Step a, preparing green body raw materials, imitation pottery glaze and speckled particles;

[0031] Step b, forming a green body, drying and then biscuit firing;

[0032] Step c, applying imitation pottery glaze on the body;

[0033] Step d, entering the kiln for glaze firing, during which the speckled particles are introduced into the kiln through a blower for further firing, and the finished product is obtained after cooling. The speckled particles are introduced into the kiln from above, and preferably from multiple inlets, so that the distribution of the speckled particles is more uniform.

[0034] In step a, the method for preparing the spot-forming particles comprises the following steps:

[0035] Step 1: Mix and stir the raw materials according to proportion;

[0036] Step 2: heating the mixed raw materials to 1200-1250 degrees Celsius, and then quenching and crushing;

[0037] Step 3: Select the speckled particles with a particle size of 1-1.5 mm through screening.

[0038] In step b, the biscuit firing temperature is 800-850 degrees Celsius, and in step d, the firing temperature is 1200-1250 degrees Celsius.

[0039] In step d, the kiln is heated by natural gas. After the kiln reaches the firing temperature, the preheated speckled particles are added into the kiln through a preheater. After the firing temperature is maintained for 2-3 hours, the kiln is cooled.

[0040] There is a preheater near the top of the kiln, and a preheating chamber is provided in the preheater. After the spot particles enter the preheating chamber, they are blown to the flame nozzle in the preheating chamber by the blower. After being burned by the flame nozzle, the spot particles enter the kiln. The temperature inside the preheating chamber is maintained at 800-900 degrees Celsius to ensure that the spot particles are preheated to the critical reaction temperature but not melted. After entering the kiln, the preheated spot particles fall on the glaze surface and merge with the glaze surface to form peacock green eye spots.

[0041] The above are only some specific implementation methods of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. Imitation pottery glazed ceramics with peacock green eye spots, characterized in that: The invention comprises a body and a pottery-like glaze surface covered on the body, wherein peacock green eye spots are distributed on the pottery-like glaze surface.

2. The pottery-like glazed ceramic with peacock green eye spots according to claim 1, characterized in that: The raw materials of the green body include the following components in parts by weight: 35-40 parts of kaolin, 25-30 parts of feldspar, 5-12 parts of talc, 20-25 parts of quartz, and 5-8 parts of bentonite.

3. The pottery-like glazed ceramic with peacock green eye spots according to claim 1, characterized in that: The raw material of the imitation pottery glaze is an imitation pottery glaze, which includes the following components by weight: 45-48 parts of potassium feldspar, 20-24 parts of quartz, 10-14 parts of Suzhou kaolin, 8-12 parts of zircon, 5-8 parts of limestone, 2-3 parts of zinc oxide, 6-8 parts of calcined talc, 1-1.5 parts of bone ash, and 3-4 parts of iron oxide.

4. The pottery-like glazed ceramic with peacock green eye spots according to claim 1, characterized in that: The raw material of the malachite green eye spot is spot-forming particles, which include the following components in parts by weight: 40-45 parts of borate, 5-8 parts of quartz, 12-14 parts of feldspar, 8-12 parts of kaolin, 5-7 parts of aluminum oxide, 6-8 parts of calcium oxide, 1-2 parts of magnesium oxide, 2-3 parts of potassium oxide, 1-2 parts of sodium oxide, 1-2 parts of ferric oxide, 3-4 parts of copper oxide, 3-4 parts of chromium oxide, 5-6 parts of antimony ore, 2-3 parts of ammonium hexafluorozirconate and 2-3 parts of niobium pentoxide.

5. The pottery-like glazed ceramic with peacock green eye spots according to claim 1, characterized in that: The particle size of the spot-forming particles is 1-1.5 mm.

6. The method for preparing the pottery-like glazed ceramic with peacock green eye spots according to any one of claims 1 to 5, characterized in that: The steps include: Step a, preparing green body raw materials, imitation pottery glaze and speckled particles; Step b, forming a green body, drying and then biscuit firing; Step c, applying imitation pottery glaze on the body; Step d, putting the glaze into the kiln for glaze firing, during which the speckled particles are introduced into the kiln through a blower for continued firing, and the finished product is obtained after cooling.

7. The method for preparing the pottery-like glazed ceramic with peacock green eye spots according to claim 6, characterized in that: In step a, the method for preparing the spot-forming particles comprises the following steps: Step 1: Mix and stir the raw materials according to proportion; Step 2: heating the mixed raw materials to 1200-1250 degrees Celsius, and then quenching and crushing; Step 3: Select the speckled particles with a particle size of 1-1.5 mm through screening.

8. The method for preparing the pottery-like glazed ceramic with peacock green eye spots according to claim 6, characterized in that: In the step b, the biscuit firing temperature is 800-850 degrees Celsius, and in the step d, the firing temperature is 1200-1250 degrees Celsius.

9. The method for preparing the pottery-like glazed ceramic with peacock green eye spots according to claim 6, characterized in that: In the step d, the kiln is heated by natural gas. After the kiln reaches the firing temperature, the preheated spot particles are added into the kiln through the preheater. After the firing temperature is maintained for 2-3 hours, the kiln is cooled.

10. The method for preparing the pottery-like glazed ceramic with peacock green eye spots according to claim 9, characterized in that: The kiln is provided with a preheater near the top, and a preheating chamber is provided in the preheater. After the spot particles enter the preheating chamber, they are blown toward the flame nozzle in the preheating chamber by the action of a blower. After being burned by the flame nozzle, the spot particles enter the interior of the kiln.