Cobalt blue porcelain ceramic article and method of making the same

Abstract

The application discloses a kind of cerulean Ru porcelain ceramic products and preparation method thereof, belong to the technical field of ceramics.Cerulean Ru porcelain ceramic product, including ceramic body and glaze layer composition, the glaze layer is attached to the surface of the ceramic body, the glaze layer includes the following components: potassium feldspar, hubei feldspar, silica, stalactite, calcined talc, datong soil, barium carbonate, bone charcoal, tin oxide and colorant 1.9~2.1 parts.The prepared cerulean Ru porcelain ceramic product has excellent glaze strength, and high gloss, and good visual effect of glaze.

Description

Technical Field

[0001] The present invention belongs to the technical field of ceramics, and in particular relates to a Tianqing Ru porcelain ceramic product and a preparation method thereof. Background Art

[0002] Ceramics have always been a common product, found in a wide range of applications, from daily necessities and handicrafts to high-end precision instruments. However, the public is more exposed to these products than to everyday items. Ceramic glazes come in a wide variety of finishes, with some preferring solid colors while others prefer glazes with rich patterns. Consequently, the ceramic industry is constantly developing new products to meet diverse market demands.

[0003] Chinese invention patent application number 201510558946.4 discloses a celadon secret glaze, belonging to the field of ceramic glaze technology. During its preparation and firing, the firing atmosphere must be strictly controlled, which is difficult to control during mass production in the entire kiln, resulting in low yields. Therefore, there is a need to develop a production process that is easy to control and suitable for mass production of celadon Ru porcelain ceramic products. Summary of the Invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a Tianqing Ru porcelain ceramic product and a preparation method thereof.

[0005] The present invention adopts the following technical solutions:

[0006] The Tianqing Ru porcelain ceramic product includes a ceramic body and a glaze layer. The glaze layer is attached to the surface of the ceramic body and is formed by firing. The glaze layer includes the following components in parts by mass: 14.4~19.1 parts of potassium feldspar, 12.2~15.3 parts of Hubei feldspar, 32.2~43.1 parts of silica, 16.3~19.5 parts of stalactites, 3.6~4.8 parts of burned talc, 3.2~5.6 parts of Datong soil, 11.6~14.8 parts of barium carbonate, 1.9~2.3 parts of bone charcoal, 2.8~3.4 parts of tin oxide, and 1.9~2.1 parts of colorant.

[0007] Furthermore, the colorant includes the following components in parts by mass: 40-43 parts of copper oxide, 40-43 parts of tin oxide, and 20-25 parts of barium oxide.

[0008] The method for preparing the Tianqing Ru porcelain ceramic product comprises the following steps:

[0009] Step 1: Prepare glaze

[0010] S1. Preparation of pigment

[0011] Mixing and crushing the copper oxide, tin oxide, and barium oxide according to the mass fractions to obtain a crushed material;

[0012] S2. Calcination

[0013] The crushed material obtained in S1 is calcined and cooled to obtain a calcined material;

[0014] S3, Mixing

[0015] According to the mass fractions, the potassium feldspar, Hubei feldspar, silica, stalactite, burned talc, Datong soil, barium carbonate, bone char and tin oxide are mixed, crushed and hammered to obtain hammered material;

[0016] S4, ball milling

[0017] The calcined material obtained in S2 and the hammered material obtained in S3 are mixed and ball-milled to obtain a ball-milled material;

[0018] S5. Prepare glaze

[0019] The obtained ball mill material is mixed with water to obtain azure ceramic glaze;

[0020] Step 2: Glazing and firing

[0021] The azure ceramic glaze obtained in step 1 is applied to the surface of the ceramic body. After firing, the glaze forms a glaze layer to obtain a azure Ru porcelain ceramic product.

[0022] Furthermore, after the crushing in S1, the product is passed through a 50-60 mesh sieve, and the calcination temperature in S2 is 1250-1280° C. for 30-40 minutes.

[0023] Furthermore, the pounding in S3 is performed using a Raymond mill for 1.5 to 2 hours, and the ball milling in S4 is performed using the following mass ratio: ball: water: material = 1:1.1 to 1.2:1, the rotation speed during the ball milling is 450 to 500 r / min, and the ball milling time is 24 to 36 hours.

[0024] Furthermore, the Baume degree of the S5 prepared glaze is 45~48.

[0025] Furthermore, the firing process described in step 2 is specifically as follows:

[0026] One-stage firing: heating at a rate of 0.6-0.8°C / min to 200-270°C, holding at this temperature for 30-50 minutes;

[0027] Second stage firing: heating at a rate of 1.0-1.1°C / min to 500-650°C, holding at this temperature for 60-90 minutes;

[0028] Three-stage firing: heating at a rate of 0.8-0.9°C / min to 850-930°C, holding at this temperature for 60-120 minutes;

[0029] Four-stage firing: heating at a rate of 1.0-1.2°C / min to 1320-1350°C, holding at this temperature for 60-80 minutes;

[0030] Five-stage firing: cool down to 560~620℃ at a cooling rate of 10~12℃ / min, and then cool naturally to obtain Tianqing Ru porcelain ceramic products.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The Tianqing Ru porcelain ceramic product of the present invention consists of a ceramic body and a glaze layer, wherein the colorant components in the glaze layer are copper oxide, tin oxide and barium oxide. It is first calcined to effectively remove impurities, which is beneficial to improve the bonding degree with other raw material particles, ensure the stability of the glaze surface, and effectively improve the glossiness.

[0033] To enhance the glaze's strength, a mixture of sandstone, stalactites, and Datong clay is used. This, combined with the inventor's five-stage firing method, utilizes a heating rate and a constant temperature to effectively enhance the glaze's colorability and, more importantly, its compactness, thereby increasing its strength. Furthermore, the applicant's developed azure-colored ceramic glaze is widely applicable to most commercially available ceramic bodies and exhibits strong adhesion to them. DETAILED DESCRIPTION

[0034] The raw materials used in the present invention are all commercially available products. Example 1

[0035] Tianqing Ru porcelain ceramic products include a ceramic body and a glaze layer. The glaze layer is attached to the surface of the ceramic body and is formed through firing. The glaze layer includes the following components in parts by mass: 14.4 parts of potassium feldspar, 12.2 parts of Hubei feldspar, 32.2 parts of silica, 16.3 parts of stalactites, 3.6 parts of burned talc, 3.2 parts of Datong soil, 11.6 parts of barium carbonate, 1.9 parts of bone charcoal, 2.8 parts of tin oxide, and 1.9 parts of colorant.

[0036] The colorant includes the following components in parts by mass: 40 parts of copper oxide, 40 parts of tin oxide, and 20 parts of barium oxide.

[0037] The method for preparing the Tianqing Ru porcelain ceramic product according to claim 1 comprises the following steps:

[0038] Step 1: Prepare glaze

[0039] S1. Preparation of pigment

[0040] The copper oxide, tin oxide and barium oxide are mixed and crushed according to the mass fractions, and the crushed materials are passed through a 50-60 mesh sieve to obtain crushed materials;

[0041] S2. Calcination

[0042] The crushed material obtained in S1 was calcined at a temperature of 1250°C for 30 min, and then cooled to obtain a calcined material;

[0043] S3, Mixing

[0044] According to the mass fractions, the potassium feldspar, Hubei feldspar, silica, stalactite, burned talc, Datong soil, barium carbonate, bone char and tin oxide are mixed and crushed, and hammered using a Raymond mill for 1.5 hours to obtain a hammered material;

[0045] S4, ball milling

[0046] The calcined material obtained in S2 and the hammered material obtained in S3 were mixed and ball-milled. The ball-milling was performed in the following mass ratio: ball: water: material = 1:1.1:1. The speed of the ball-milling was 450 r / min and the ball-milling time was 24 h. After ball-milling, a ball-milled material was obtained.

[0047] S5. Prepare glaze

[0048] The obtained ball mill material was mixed with water to adjust the glaze to a Baume degree of 45 to obtain a sky-blue ceramic glaze;

[0049] Step 2: Glazing and firing

[0050] The azure ceramic glaze obtained in step 1 is applied to the surface of the ceramic body. After firing, the glaze forms a glaze layer to obtain a azure Ru porcelain ceramic product.

[0051] Preferably, the firing process is as follows:

[0052] One-stage firing: heating to 200°C at a rate of 0.6°C / min and holding at this temperature for 30 minutes;

[0053] Second stage firing: heating to 500°C at a rate of 1.0°C / min and holding at this temperature for 60 min;

[0054] Three-stage firing: heating at a rate of 0.8°C / min to 850°C and holding at this temperature for 60 min;

[0055] Four-stage firing: heating at a rate of 1.0°C / min to 1320°C and holding at this temperature for 60 minutes;

[0056] Five-stage firing: cooling to 560℃ at a cooling rate of 10℃ / min, and then cooling naturally. Example 2

[0057] Tianqing Ru porcelain ceramic products include a ceramic body and a glaze layer. The glaze layer is attached to the surface of the ceramic body and is formed through firing. The glaze layer includes the following components in parts by mass: 19.1 parts of potassium feldspar, 15.3 parts of Hubei feldspar, 43.1 parts of silica, 19.5 parts of stalactites, 4.8 parts of burned talc, 5.6 parts of Datong soil, 14.8 parts of barium carbonate, 2.3 parts of bone charcoal, 3.4 parts of tin oxide, and 2.1 parts of colorant.

[0058] The colorant includes the following components in parts by mass: 43 parts of copper oxide, 43 parts of tin oxide, and 25 parts of barium oxide.

[0059] The method for preparing the Tianqing Ru porcelain ceramic product according to claim 1 comprises the following steps:

[0060] Step 1: Prepare glaze

[0061] S1. Preparation of pigment

[0062] Mixing the copper oxide, tin oxide, and barium oxide according to the mass fractions, crushing the mixture, and passing the mixture through a 60-mesh sieve to obtain a crushed material;

[0063] S2. Calcination

[0064] The crushed material obtained in S1 was calcined at a temperature of 1280°C for 40 min, and then cooled to obtain a calcined material;

[0065] S3, Mixing

[0066] According to the mass fractions, the potassium feldspar, Hubei feldspar, silica, stalactite, burned talc, Datong soil, barium carbonate, bone char and tin oxide are mixed and crushed, and hammered using a Raymond mill for 2 hours to obtain a hammered material;

[0067] S4, ball milling

[0068] The calcined material obtained in S2 and the hammered material obtained in S3 were mixed and ball-milled. The ball-milling was performed in the following mass ratio: ball: water: material = 1:1.2:1. The speed of the ball-milling was 500 r / min and the ball-milling time was 24-36 h to obtain a ball-milled material.

[0069] S5. Prepare glaze

[0070] The obtained ball mill material was mixed with water to adjust the glaze to a Baume degree of 48 to obtain a sky-blue ceramic glaze;

[0071] Step 2: Glazing and firing

[0072] The azure ceramic glaze obtained in step 1 is applied to the surface of the ceramic body. After firing, the glaze forms a glaze layer to obtain a azure Ru porcelain ceramic product.

[0073] Preferably, the firing process is as follows:

[0074] One-stage firing: heating at a rate of 0.8°C / min to 270°C and holding at this temperature for 50 minutes;

[0075] Second stage firing: heating to 650℃ at a rate of 1.1℃ / min and holding at this temperature for 90min;

[0076] Three-stage firing: heating at a rate of 0.9°C / min to 930°C and holding at this temperature for 120 min;

[0077] Four-stage firing: heating at a rate of 1.2°C / min to 1350°C and holding at that temperature for 80 min;

[0078] Five-stage firing: cooling to 620℃ at a cooling rate of 12℃ / min, and then cooling naturally. Example 3

[0079] Tianqing Ru porcelain ceramic products include a ceramic body and a glaze layer. The glaze layer is attached to the surface of the ceramic body and is formed through firing. The glaze layer includes the following components in parts by mass: 16.8 parts of potassium feldspar, 14.2 parts of Hubei feldspar, 38.41 parts of silica, 18.6 parts of stalactites, 4.2 parts of burned talc, 4.2 parts of Datong soil, 13.8 parts of barium carbonate, 2.1 parts of bone charcoal, 3.2 parts of tin oxide, and 2.0 parts of colorant.

[0080] The colorant includes the following components in parts by mass: 42 parts of copper oxide, 42 parts of tin oxide, and 23 parts of barium oxide.

[0081] The method for preparing the Tianqing Ru porcelain ceramic product according to claim 1 comprises the following steps:

[0082] Step 1: Prepare glaze

[0083] S1. Preparation of pigment

[0084] Mixing the copper oxide, tin oxide, and barium oxide according to the mass fractions, crushing the mixture, and passing the mixture through a 60-mesh sieve to obtain a crushed material;

[0085] S2. Calcination

[0086] The crushed material obtained in S1 was calcined at a temperature of 1260°C for 35 min, and then cooled to obtain a calcined material;

[0087] S3, Mixing

[0088] According to the mass fractions, the potassium feldspar, Hubei feldspar, silica, stalactite, burned talc, Datong soil, barium carbonate, bone char and tin oxide are mixed and crushed, and hammered using a Raymond mill for 2 hours to obtain a hammered material;

[0089] S4, ball milling

[0090] The calcined material obtained in S2 and the hammered material obtained in S3 were mixed and ball-milled. The ball-milling was performed in the following mass ratio: ball: water: material = 1:1.2:1. The speed of the ball-milling was 500 r / min and the ball-milling time was 30 h. After ball-milling, a ball-milled material was obtained.

[0091] S5. Prepare glaze

[0092] The obtained ball mill material was mixed with water to adjust the glaze to a Baume degree of 46 to obtain a sky-blue ceramic glaze;

[0093] Step 2: Glazing and firing

[0094] The azure ceramic glaze obtained in step 1 is applied to the surface of the ceramic body. After firing, the glaze forms a glaze layer to obtain a azure Ru porcelain ceramic product.

[0095] Preferably, the firing process is as follows:

[0096] One-stage firing: heating at a rate of 0.7°C / min to 240°C and holding at this temperature for 40 minutes;

[0097] Second stage firing: heating to 600℃ at a rate of 1.0℃ / min and holding at this temperature for 80min;

[0098] Three-stage firing: heating to 900°C at a rate of 0.9°C / min and holding at this temperature for 100 min;

[0099] Four-stage firing: heating at a rate of 1.1°C / min to 1340°C and holding at this temperature for 70 minutes;

[0100] Five-stage firing: cooling to 600℃ at a cooling rate of 11℃ / min, and then cooling naturally.

[0101] Control Example

[0102] Tianqing Ru porcelain ceramic products include a ceramic body and a glaze layer. The glaze layer is attached to the surface of the ceramic body and is formed through firing. The glaze layer includes the following components in parts by mass: 16.8 parts of potassium feldspar, 14.2 parts of Hubei feldspar, 38.41 parts of silica, 18.6 parts of stalactites, 4.2 parts of burned talc, 4.2 parts of Datong soil, 13.8 parts of barium carbonate, 2.1 parts of bone charcoal, 3.2 parts of tin oxide, and 2.0 parts of colorant.

[0103] The colorant includes the following components in parts by mass: 42 parts of copper oxide, 42 parts of tin oxide, and 23 parts of barium oxide.

[0104] The method for preparing the Tianqing Ru porcelain ceramic product according to claim 1 comprises the following steps:

[0105] Step 1: Prepare glaze

[0106] S1. Preparation of pigment

[0107] Mixing the copper oxide, tin oxide, and barium oxide according to the mass fractions, crushing the mixture, and passing the mixture through a 60-mesh sieve to obtain a crushed material;

[0108] S2. Calcination

[0109] The crushed material obtained in S1 was calcined at a temperature of 1260°C for 35 min, and then cooled to obtain a calcined material;

[0110] S3, Mixing

[0111] According to the mass fractions, the potassium feldspar, Hubei feldspar, silica, stalactite, burned talc, Datong soil, barium carbonate, bone char and tin oxide are mixed, crushed and hammered to obtain hammered material;

[0112] S4, ball milling

[0113] The calcined material obtained in S2 and the hammered material obtained in S3 were mixed and ball-milled. The ball-milling was performed in the following mass ratio: ball: water: material = 1:1.2:1. The speed of the ball-milling was 500 r / min and the ball-milling time was 30 h. After ball-milling, a ball-milled material was obtained.

[0114] S5. Prepare glaze

[0115] The obtained ball mill material was mixed with water to adjust the glaze to a Baume degree of 46 to obtain a sky-blue ceramic glaze;

[0116] Step 2: Glazing and firing

[0117] The azure ceramic glaze obtained in step 1 is applied to the surface of the ceramic body, and after firing at 1350° C. for 10 hours, the glaze forms a glaze layer, thereby obtaining a azure Ru porcelain ceramic product.

[0118] The Tianqing Ru porcelain ceramic products prepared in Examples 1 to 3 of the present invention and the Tianqing Ru porcelain ceramic products prepared in the control example were tested, wherein:

[0119] The crack resistance performance was tested using GB / T 34252-2017 Test method for glaze crack resistance of daily-use ceramics;

[0120] GB / T 3532-2022 Daily-Use Porcelain was used to test thermal shock resistance, water absorption, and glossiness.

[0121] The test results are shown in Table 1 below:

[0122] Table 1: Test results As can be seen from Table 1, the Tianqing Ru porcelain ceramic products prepared in Examples 1 to 3 have excellent glaze strength, high gloss, and good glaze visual effect.

[0123] The above is a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. Tianqing Ru porcelain ceramic products, characterized in that, The invention comprises a ceramic body and a glaze layer, wherein the glaze layer is attached to the surface of the ceramic body and is formed by firing, wherein the glaze layer comprises the following components by weight: 14.4-19.1 parts of potassium feldspar, 12.2-15.3 parts of Hubei feldspar, 32.2-43.1 parts of silica, 16.3-19.5 parts of stalactite, 3.6-4.8 parts of burnt talc, 3.2-5.6 parts of Datong clay, 11.6-14.8 parts of barium carbonate, 1.9-2.3 parts of bone char, 2.8-3.4 parts of tin oxide, and 1.9-2.1 parts of colorant; The colorant includes the following components in parts by mass: 40-43 parts of copper oxide, 40-43 parts of tin oxide, and 20-25 parts of barium oxide.

2. The method for preparing the Tianqing Ru porcelain ceramic product according to claim 1, characterized in that: The steps include: Step 1: Prepare glaze S1. Preparation of pigment Mixing and crushing the copper oxide, tin oxide, and barium oxide according to the mass fractions to obtain a crushed material; S2. Calcination The crushed material obtained in S1 is calcined and cooled to obtain a calcined material; S3, Mixing According to the mass fractions, the potassium feldspar, Hubei feldspar, silica, stalactite, burned talc, Datong soil, barium carbonate, bone char and tin oxide are mixed, crushed and hammered to obtain hammered material; S4, ball milling The calcined material obtained in S2 and the hammered material obtained in S3 are mixed and ball-milled to obtain a ball-milled material; S5. Prepare glaze The obtained ball mill material is mixed with water to obtain azure ceramic glaze; Step 2: Glazing and firing The azure ceramic glaze obtained in step 1 is applied to the surface of the ceramic body. After firing, the glaze forms a glaze layer to obtain a azure Ru porcelain ceramic product.

3. The method for preparing the Tianqing Ru porcelain ceramic product according to claim 2, characterized in that: After the crushing in S1, the product is passed through a 50-60 mesh sieve. The calcination temperature in S2 is 1250-1280° C. for 30-40 minutes.

4. The method for preparing the Tianqing Ru porcelain ceramic product according to claim 2, characterized in that: The pounding in S3 is performed using a Raymond mill for 1.5 to 2 hours, and the ball milling in S4 is performed using the following mass ratio: ball: water: material = 1:1.1 to 1.2:1, the rotation speed during the ball milling is 450 to 500 r / min, and the ball milling time is 24 to 36 hours.

5. The method for preparing the Tianqing Ru porcelain ceramic product according to claim 2, characterized in that: The Baume degree of S5 glaze is 45~48.

6. The method for preparing the Tianqing Ru porcelain ceramic product according to claim 2, characterized in that: The firing process described in step 2 is specifically as follows: One-stage firing: heating at a rate of 0.6-0.8°C / min to 200-270°C, holding at this temperature for 30-50 minutes; Second stage firing: heating at a rate of 1.0-1.1°C / min to 500-650°C, holding at this temperature for 60-90 minutes; Three-stage firing: heating at a rate of 0.8-0.9°C / min to 850-930°C, holding at this temperature for 60-120 minutes; Four-stage firing: heating at a rate of 1.0-1.2°C / min to 1320-1350°C, holding at this temperature for 60-80 minutes; Five-stage firing: cool down to 560~620℃ at a cooling rate of 10~12℃ / min, and then cool naturally to obtain Tianqing Ru porcelain ceramic products.

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