A ceramic painting glaze stick and its preparation method

Abstract

The present invention provides a ceramic painting glaze stick and a preparation method thereof. The raw materials of the ceramic painting glaze stick, by weight, include: 70-90 parts of vanadium-titanium slag, 5-15 parts of red mud, and 5-15 parts of iron-removing slag. Among the raw materials of the ceramic painting glaze stick in the embodiments of the present application, vanadium-titanium slag, red mud, and iron-removing slag all belong to metallurgical slag, realizing the preparation of black ceramic painting glaze sticks using all-component metallurgical slag. Since the metallurgical slag is originally the tail slag after calcination, using these metallurgical slags to prepare ceramic painting materials, the color after high-temperature firing is the same as the color before firing and will not fade, solving the problem of inconsistent colors of the ceramic painting glaze stick before and after firing. Moreover, by utilizing the strong plasticity of red mud in the metallurgical slag, other binders do not need to be added during the preparation of the glaze stick to meet the requirements of ceramic painting, solving the strength problem of preparing ceramic painting glaze sticks with all metallurgical slag. In addition, the present application also improves the utilization rate of metallurgical slag.

Description

Technical Field

[0001] The invention relates to the technical field of building ceramic production, in particular to a ceramic painting glaze rod and a preparation method thereof. Background Art

[0002] With the development of modern decoration technology, ceramics are given more artistic forms, and the infinitely extended plane of tiles provides a wide space for sketching and painting. In the process of combining sketching and artistic ceramics in the existing technology, when artistic ceramics are fired at high temperature, some mineral raw materials lose color seriously after high temperature firing.

[0003] Therefore, the prior art has defects and needs to be improved and developed. Summary of the invention

[0004] The technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a ceramic painting glaze rod and a preparation method thereof are provided, aiming to solve the problem that in the process of combining sketch painting with artistic ceramics in the prior art, when the artistic ceramics are fired at high temperature, some mineral raw materials lose color seriously after being fired at high temperature.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] The first aspect of the present application provides a ceramic painting glaze stick, wherein the raw materials of the ceramic painting glaze stick include, by weight:

[0007] 70-90 parts of vanadium-titanium slag, 5-15 parts of red mud, and 5-15 parts of iron removal slag.

[0008] According to the above-mentioned technical means, among the raw materials of the ceramic painting glaze rod in the embodiment of the present application, vanadium-titanium slag, red mud and iron removal slag are all metallurgical slag, which realizes the preparation of black ceramic painting glaze rods using full-component metallurgical slag. Since metallurgical slag is originally the tailings after calcination, when these metallurgical slags are used to prepare ceramic painting materials, the color after high-temperature firing is consistent with the color before firing and will not lose color, which solves the problem of inconsistent color of ceramic painting glaze rods before and after firing. In addition, by utilizing the strong plasticity of red mud in metallurgical slag itself, the requirements of ceramic painting can be met without adding other binders during the preparation of glaze rods, which solves the strength problem of ceramic painting glaze rods prepared with all metallurgical slag. In addition, the present application also improves the utilization rate of metallurgical slag.

[0009] In one embodiment of the present application, the chemical components of the vanadium-titanium slag, measured by mass percentage, include:

[0010] Loss on ignition: 1% - 1.5%, Al2O3: 3.5% - 5%, SiO2: 12% - 20%, Fe2O3: 40% - 50%, CaO: 2% - 4%, MgO: 2.5% - 4%, K2O: 0.01% - 0.05%, Na2O: 3.5% - 6%, TiO2: 9% - 15%, MnO: 7% - 12%, Cr2O3: 2% - 6%, V2O5: 0.5% - 2%.

[0011] According to the above technical means, the embodiments of the present application utilize a large amount of vanadium-titanium slag to prepare ceramic painting glaze rods, which can significantly reduce the environmental pollution problems caused by the stacking of vanadium-titanium slag and improve the utilization rate of vanadium-titanium slag.

[0012] In an embodiment of the present application, the phases of the vanadium-titanium slag include: hematite, manganese ferrite spinel, ilmenite, magnesium iron titanate, clinorutile, and rutile.

[0013] According to the above technical means, the embodiments of the present application can prepare black glaze rod materials by using the composite of various different metal oxide phases in the raw materials.

[0014] In an embodiment of the present application, the chemical components of the red mud, by mass percentage, include:

[0015] Loss on ignition: 8% - 12%, Al2O3: 18.5% - 23%, SiO2: 12.5% - 18.5%, Fe2O3: 30.5% - 40%, CaO: 4.5% - 6.5%, MgO: 0.1% - 0.5%, K2O: 0.1% - 1%, Na2O: 5% - 8%, TiO2: 3% - 6%.

[0016] According to the above technical means, the red mud in the raw materials of the embodiments of the present application has high plasticity, can provide the strength for glaze rod painting, and the prepared glaze rods can be adjusted according to the painting use performance. Moreover, the red mud itself has strong plasticity and can meet the requirements of ceramic painting without adding other binders during the preparation of glaze rods. Utilizing red mud to prepare ceramic painting glaze rods can significantly reduce the environmental pollution problems caused by the stacking of red mud and improve the utilization rate of red mud.

[0017] In an embodiment of the present application, the chemical components of the iron-removed slag, by mass percentage, include:

[0018] Loss on ignition: 3.5% - 5%, Al2O3: 12% - 18%, SiO2: 60% - 70%, Fe2O3: 6% - 15%, CaO: 1% - 3%, MgO: 1% - 3%, K2O: 1% - 4%, Na2O: 2% - 5%, TiO2: 0.5% - 2%.

[0019] According to the above technical means, the embodiment of the present application uses iron removal slag to prepare ceramic painting glaze rods, which can greatly reduce the environmental pollution problems caused by the stacking of iron removal slag and improve the utilization rate of iron removal slag.

[0020] The embodiment of the second aspect of the present application provides a preparation method of the above-mentioned ceramic painting glaze rod, wherein the preparation method of the ceramic painting glaze rod includes:

[0021] Take 70-90 parts of vanadium-titanium slag for ball milling to obtain vanadium-titanium slag slurry;

[0022] Ball mill and mix 5-15 parts of red mud and 5-15 parts of iron removal slag with the vanadium-titanium slag slurry to obtain glaze rod slurry;

[0023] Process the glaze rod slurry to obtain a formed glaze rod;

[0024] Dry the formed glaze rod and then perform polishing treatment to obtain a ceramic painting glaze rod.

[0025] According to the above technical means, the reason for adopting segmented ball milling in the embodiment of the present application is that the iron removal slag itself is the slurry after ball milling, and the fineness of the red mud raw material is very fine. Therefore, the red mud and iron removal slag do not need to be ball milled together with the vanadium-titanium slag, which can not only reduce energy consumption, but also will not grind the iron removal slag and red mud too fine, affecting the performance of the product.

[0026] In the embodiment of the present application, the raw materials are fully refined and evenly mixed through the ball milling process, which helps to form a uniform and stable glaze rod in the subsequent steps; moreover, ball milling can also promote the chemical reaction between the raw materials and improve the adhesion and wear resistance of the glaze. Drying the formed glaze rod can remove the moisture in the glaze rod and prevent cracking or deformation during subsequent use; polishing can further improve the smoothness and fineness of the surface of the glaze rod, making it more suitable for ceramic painting.

[0027] In an embodiment of the present application, the fineness of the vanadium-titanium slag slurry is 0-0.5% residue on a 325-mesh sieve.

[0028] According to the above technical means, the embodiment of the present application controls the fineness of the vanadium-titanium slag slurry to 0-0.5% residue on a 325-mesh sieve. The fine particles are more likely to be evenly distributed during the mixing process, making the subsequent mixing of the vanadium-titanium slag slurry with red mud and iron removal slag more uniform.

[0029] In an embodiment of the present application, the fineness of the glaze rod slurry is 0-0.3% residue on a 325-mesh sieve.

[0030] According to the above technical means, the refined glaze rod slurry in the embodiment of the present application helps to reduce the firing temperature, thereby reducing energy consumption and production costs.

[0031] In one embodiment of the present application, the glaze rod slurry is processed to obtain a formed glaze rod, including:

[0032] The glaze rod slurry is sieved, and the sieved glaze rod slurry is dried under the conditions of a drying temperature of 150 - 200 °C and a drying time of 20 - 40 min to obtain glaze rod powder;

[0033] The glaze rod powder is ground and granulated by adding water. The granulated glaze rod powder is sieved through a 40-mesh sieve, and the granulation moisture content is 8% - 12%;

[0034] The glaze rod powder passing through the 40-mesh sieve is poured into a mold and pressed into a formed glaze rod, wherein the forming pressure is 10 - 40 MPa.

[0035] According to the above technical means, in the embodiment of the present application, sieving the glaze rod slurry can remove large particles and impurities in the glaze rod slurry, making the glaze rod powder more uniform and delicate; drying under the conditions of a drying temperature of 150 - 200 °C and a drying time of 20 - 40 min can ensure the effective removal of moisture in the glaze rod powder, while avoiding cracks or deformations caused by over-drying, improving the stability of the glaze rod powder and the quality of subsequent forming. By grinding and granulating with water, the particle morphology of the glaze rod powder can be made more regular and the particle size distribution more uniform. Controlling the moisture content after granulation within the range of 8% - 12% helps to ensure good fluidity and plasticity of the glaze rod powder during the pressing forming process, thereby obtaining a more dense and uniform formed glaze rod. Using a mold for pressing forming can ensure that the formed glaze rod has precise dimensions and shapes. Pressing under an appropriate forming pressure can make the bonding between the glaze rod powder particles closer, thereby improving the density and strength of the glaze rod. Therefore, the embodiment of the present application improves the quality of the glaze rod through the above steps.

[0036] In one embodiment of the present application, the formed glaze rod is dried and then subjected to polishing treatment to obtain a ceramic painting glaze rod, including:

[0037] After the formed glaze rod is dried under the conditions of a drying temperature of 130 - 180 °C and a drying time of 20 - 40 min, it is subjected to polishing treatment to obtain a ceramic painting glaze rod, and the moisture content of the ceramic painting glaze rod is 0% - 2%.

[0038] According to the above technical means, in the embodiment of the present application, the formed glaze rod is dried under the conditions of a drying temperature of 130 - 180 °C and a drying time of 20 - 40 min, which helps the uniform evaporation of moisture inside the glaze rod, reduces the internal stress generated due to the rapid evaporation of moisture, and thus avoids the cracking or deformation of the glaze rod; moreover, the drying process further consolidates the internal structure of the glaze rod, improves its overall strength and durability, and makes it more stable and reliable during use. The polishing treatment can remove the tiny protrusions and uneven parts on the surface of the glaze rod, making its surface smoother and brighter, which helps to obtain more delicate and uniform line and color effects during the painting process. Controlling the moisture content of the ceramic painting glaze rod to be 0% - 2% helps to prevent the cracking or deformation problems caused by moisture changes during subsequent use or storage, and an appropriate moisture content helps the fluidity and adhesion of the glaze during the painting process. Therefore, through reasonable drying and polishing processes, the embodiment of the present application can shorten the production cycle of the glaze rod, improve production efficiency, and strict process control helps to reduce the generation of waste products caused by glaze rod quality problems and improve the yield.

[0039] Advantages of the present application:

[0040] (1) Solved the problem of applying metallurgical slag to the formula system of cultural architectural ceramic painting materials. Through the high-temperature sintering process, the harmful components in the metallurgical slag can be solidified, reducing the harm to the environment caused by the stacking of metallurgical slag and improving the utilization rate of solid waste resources.

[0041] (2) Solved the strength problem of ceramic painting glaze rods prepared from all metallurgical slag. Utilizing the characteristic that the red mud in the metallurgical slag itself has strong plasticity, no other binders need to be added during the preparation of the glaze rod to meet the requirements of ceramic painting.

[0042] (3) Solved the problem of inconsistent colors before and after firing of ceramic painting glaze rods. The metallurgical slag is originally the tail slag after calcination, so using these metallurgical slags to prepare ceramic painting materials, the color after high-temperature firing is the same as the color before firing, which is beneficial to painting creation.

[0043] (4) Solved the problem of resource recycling and reuse of metallurgical solid waste. Using metallurgical solid waste resources to prepare ceramic painting materials with high added value can not only improve the utilization rate of resources, reduce waste, but also develop a new type of high-added value material, which has very important practical significance for the development of circular economy. Description of the Drawings

[0044] Figure 1 It is a flowchart of a preferred embodiment of a preparation method of a ceramic painting glaze rod in the present invention. Detailed Embodiments

[0045] To make the objectives, technical solutions and advantages of the present invention more clear and definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] Combining sketch painting with art ceramics, the first difficulty lies in the production of the paintbrush. When painting on the ceramic surface, it is necessary to achieve the touch of the paper surface, while having a soft texture, a smooth and comfortable feel when holding the brush, and a natural grip. The second difficulty is that art ceramics are fired at high temperatures, and some mineral raw materials lose their color severely after being fired at high temperatures.

[0047] At the same time, with the development of traditional industrial and mining industries and related regions, the stockpiles of bulk solid waste generated by them are gradually increasing. If these metallurgical slags cannot be effectively utilized, it will bring great resistance to the green upgrading and development of traditional industrial and mining industries. Therefore, the embodiments of the present application utilize bulk solid waste such as metallurgical slags to prepare sketch materials suitable for art ceramic painting.

[0048] The embodiments of the present application provide a ceramic painting glaze stick. The raw materials of the ceramic painting glaze stick, by weight, include:

[0049] 70-90 parts of vanadium-titanium slag, 5-15 parts of red mud, and 5-15 parts of iron-removing slag.

[0050] In the raw materials of the ceramic painting glaze stick of the embodiments of the present application, vanadium-titanium slag, red mud, and iron-removing slag all belong to metallurgical slags, realizing the preparation of black ceramic painting glaze sticks using all-component metallurgical slags. Since metallurgical slags are originally tailings after calcination, using these metallurgical slags to prepare ceramic painting materials, the color after high-temperature firing is the same as the color before firing and will not lose color, solving the problem of inconsistent colors of ceramic painting glaze sticks before and after firing. Moreover, by utilizing the strong plasticity of red mud in metallurgical slags, other binders do not need to be added during the preparation of the glaze stick to meet the requirements of ceramic painting, solving the strength problem of preparing ceramic painting glaze sticks using all metallurgical slags. In addition, the present application also improves the utilization rate of metallurgical slags.

[0051] In the embodiments of the present application, the chemical components of the vanadium-titanium slag, by mass percentage, include: loss on ignition 1%-1.5%, Al2O3 3.5%-5%, SiO2 12%-20%, Fe2O3 40%-50%, CaO 2%-4%, MgO 2.5%-4%, K2O 0.01%-0.05%, Na2O 3.5%-6%, TiO2 9%-15%, MnO 7%-12%, Cr2O3 2%-6%, V2O5 0.5%-2%.

[0052] Specifically, vanadium-titanium slag is a smelting waste residue containing vanadium and titanium, mainly sourced from the steelmaking and ironmaking processes. In the embodiments of this application, a large amount of vanadium-titanium slag is utilized to prepare ceramic painting glaze rods, which can significantly reduce the environmental pollution problems caused by the stacking of vanadium-titanium slag and improve the utilization rate of vanadium-titanium slag.

[0053] In one embodiment of this application, the phases of the vanadium-titanium slag include: hematite, manganese ferrite spinel, ilmenite, magnesioferrite, clinorutile, and rutile.

[0054] Specifically, the phase composition of the vanadium-titanium slag is: hematite (Fe2O3), chromium-containing hematite (Fe 0.6 Cr 0.4 )2O3, manganese ferrite spinel MnFe2O4, ilmenite Fe +2 TiO3, magnesioferrite (Mg, Fe)(Ti3Fe)O 10 , clinorutile V2 +3 Ti3O9, and a small amount of rutile TiO2.

[0055] In the embodiments of this application, by using the composite of various different metal oxide crystal phases in the raw materials, black glaze rod materials can be prepared. Since these metallurgical slags are basically raw materials after calcination, the color consistency before and after glaze rod painting is relatively good.

[0056] In the embodiments of this application, the chemical components of the red mud, by mass percentage, include:

[0057] Loss on ignition 8% - 12%, Al2O3 18.5% - 23%, SiO2 12.5% - 18.5%, Fe2O3 30.5% - 40%, CaO 4.5% - 6.5%, MgO 0.1% - 0.5%, K2O 0.1% - 1%, Na2O 5% - 8%, TiO2 3% - 6%.

[0058] Specifically, red mud is an industrial solid waste discharged during the extraction of alumina in the aluminum industry, with a large amount of iron oxide. The plasticity index IP of the red mud > 20. The red mud has high plasticity, which can provide the strength for glaze rod painting. The prepared glaze rods can be adjusted according to the painting performance, and the strength is greater than 2 MPa. Moreover, the red mud itself has strong plasticity, and no other binders need to be added during the preparation of glaze rods to meet the requirements of ceramic painting.

[0059] In the embodiments of this application, using red mud to prepare ceramic painting glaze rods can significantly reduce the environmental pollution problems caused by the stacking of red mud and improve the utilization rate of red mud.

[0060] In one embodiment of this application, the chemical components of the iron-removed slag, by mass percentage, include:

[0061] Loss on ignition: 3.5% - 5%, Al2O3: 12% - 18%, SiO2: 60% - 70%, Fe2O3: 6% - 15%, CaO: 1% - 3%, MgO: 1% - 3%, K2O: 1% - 4%, Na2O: 2% - 5%, TiO2: 0.5% - 2%.

[0062] Specifically, the iron-removed slag is the iron-removed slag collected after removing iron from the raw materials in the ceramic industry or the slurry after ball milling in the formula. In the embodiment of the present application, using the iron-removed slag to prepare the ceramic painting glaze stick can greatly reduce the environmental pollution problem caused by the stacking of the iron-removed slag and improve the utilization rate of the iron-removed slag.

[0063] In the embodiment of the present application, using metallurgical solid waste resources to prepare ceramic painting materials with high added value improves the utilization rate of resources and reduces waste.

[0064] Please refer to Figure 1 , Figure 1 which is the flowchart of the preparation method of the ceramic painting glaze stick as described above in the present invention. As Figure 1 shown, the preparation method of the ceramic painting glaze stick described in the embodiment of the present invention includes the following steps:

[0065] Step S100: Take 70 - 90 parts of vanadium-titanium slag and ball mill it to obtain vanadium-titanium slag slurry;

[0066] Step S200: Ball mill and mix 5 - 15 parts of red mud, 5 - 15 parts of iron-removed slag with the vanadium-titanium slag slurry to obtain glaze stick slurry;

[0067] Step S300: Process the glaze stick slurry to obtain a formed glaze stick;

[0068] Step S400: Dry the formed glaze stick and then perform polishing treatment to obtain a ceramic painting glaze stick.

[0069] Specifically, the reason for adopting segmented ball milling in the embodiment of the present application is that the iron-removed slag itself is the slurry after ball milling, and the fineness of the red mud raw material is very fine. Therefore, the red mud and the iron-removed slag do not need to be ball milled together with the vanadium-titanium slag, which can not only reduce energy consumption but also prevent the iron-removed slag and red mud from being ground too fine and affecting the product performance.

[0070] In the embodiment of the present application, the raw materials are fully refined and evenly mixed through the ball milling process, which helps to form a uniform and stable glaze stick in the subsequent steps; moreover, ball milling can also promote the chemical reaction between the raw materials and improve the adhesion and wear resistance of the glaze. The drying step in Step S400 can remove the moisture in the glaze stick and prevent cracking or deformation during subsequent use; polishing can further improve the surface smoothness and fineness of the glaze stick, making it more suitable for ceramic painting.

[0071] In an embodiment of the present application, the fineness of the vanadium-titanium slag slurry is 0 - 0.5% residue on a 325-mesh sieve. Specifically, the vanadium-titanium slag is ball-milled to obtain a vanadium-titanium slag slurry with a predetermined fineness, and the predetermined fineness is 0 - 0.5% residue on a 325-mesh sieve. In the embodiment of the present application, the fineness of the vanadium-titanium slag slurry is controlled to be 0 - 0.5% residue on a 325-mesh sieve, and the fine particles are more likely to achieve uniform distribution during the mixing process, making the subsequent mixing of the vanadium-titanium slag slurry with red mud and iron-removing slag more uniform.

[0072] In an embodiment of the present application, the fineness of the glaze rod slurry is 0 - 0.3% residue on a 325-mesh sieve. The finely ground glaze rod slurry in the embodiment of the present application helps to reduce the firing temperature, thereby reducing energy consumption and production costs.

[0073] In the embodiment of the present application, step S300 specifically includes:

[0074] Step S310: Screen the glaze rod slurry, and dry the screened glaze rod slurry under the conditions of a drying temperature of 150 - 200 °C and a drying time of 20 - 40 min to obtain glaze rod powder;

[0075] Step S320: Add water to the glaze rod powder for grinding and granulation. The granulated glaze rod powder is screened through a 40-mesh sieve, and the granulation moisture content is 8% - 12%;

[0076] Step S330: Pour the glaze rod powder screened through a 40-mesh sieve into a mold and press it into shape to obtain a shaped glaze rod, where the shaping pressure is 10 - 40 MPa.

[0077] Specifically, the granulation moisture content refers to the moisture content contained in the glaze rod powder during the preparation of granulation. Excessive moisture content may cause defects such as bubbles and cracks on the surface of the product, reducing the appearance quality and mechanical properties of the product; while too low moisture content may affect the fluidity and formability of the product. Therefore, maintaining the granulation moisture content at 8% - 12% can ensure that the prepared ceramic painting glaze rod meets the quality standards. The embodiment of the present application can also adopt different shaping pressures according to the painting performance requirements. The mold is generally a cylindrical mold, that is, the cross-section is circular, and the cross-section can also be polygonal, such as hexagonal.

[0078] In the embodiments of the present application, sieving the glaze rod slurry can remove large particles and impurities in the glaze rod slurry, making the glaze rod powder more uniform and delicate; drying under the conditions of a drying temperature of 150 - 200 °C and a drying time of 20 - 40 min can ensure the effective removal of moisture in the glaze rod powder, while avoiding cracks or deformations caused by over-drying, and improving the stability of the glaze rod powder and the quality of subsequent forming. Through water grinding and granulation, the particle morphology of the glaze rod powder can be made more regular and the particle size distribution more uniform. Controlling the moisture content of the granulated material within the range of 8% - 12% helps to ensure good fluidity and plasticity of the glaze rod powder during the pressing forming process, thereby obtaining a more dense and uniform formed glaze rod. Using a mold for pressing forming can ensure that the formed glaze rod has precise dimensions and shape. Pressing under an appropriate forming pressure can make the bonding between the glaze rod powder particles closer, thereby increasing the density and strength of the glaze rod. Therefore, the embodiments of the present application improve the quality of the glaze rod through the above steps.

[0079] In one embodiment of the present application, the step S400 is specifically as follows: after drying the formed glaze rod under the conditions of a drying temperature of 130 - 180 °C and a drying time of 20 - 40 min, a polishing treatment is performed to obtain a ceramic painting glaze rod, and the moisture content of the ceramic painting glaze rod is 0% - 2%.

[0080] Specifically, the embodiments of the present application can be dried to different moisture contents according to the requirements of painting performance.

[0081] In the embodiments of the present application, drying the formed glaze rod under the conditions of a drying temperature of 130 - 180 °C and a drying time of 20 - 40 min helps the uniform evaporation of moisture inside the glaze rod, reduces the internal stress generated due to the rapid evaporation of moisture, thereby avoiding cracking or deformation of the glaze rod; and, the drying process further consolidates the internal structure of the glaze rod, improves its overall strength and durability, and makes it more stable and reliable during use. The polishing treatment can remove the tiny protrusions and uneven parts on the surface of the glaze rod, making its surface smoother and brighter, which helps to obtain more delicate and uniform line and color effects during the painting process. Controlling the moisture content of the ceramic painting glaze rod to be 0% - 2% helps to prevent cracking or deformation problems caused by moisture changes during subsequent use or storage, and an appropriate moisture content helps the fluidity and adhesion of the glaze during the painting process.

[0082] The embodiments of the present application can shorten the production cycle of the glaze rod and improve production efficiency through reasonable drying and polishing processes. Strict process control helps to reduce the generation of waste products caused by glaze rod quality problems and improve the yield.

[0083] The embodiments of the present application can achieve the following effects:

[0084] First, by using all metallurgical slag, ceramic painting glaze rod materials with high strength (>2 MPa), adjustable painting performance, and good color consistency before and after firing can be prepared.

[0085] Second, by using metallurgical solid waste to prepare ceramic painting glaze rod materials, the painting glaze rods made of black pigment can be completely replaced, the cost can be greatly reduced, and the competitiveness of enterprises can be improved.

[0086] Third, by using all metallurgical slag to prepare ceramic painting materials, the utilization rate of metallurgical slag is increased, and the resource utilization of large amounts of industrial solid waste is realized.

[0087] Specific embodiments are listed below for illustration.

[0088] Example 1

[0089] Take 75 - 85 parts of vanadium-titanium slag and ball mill it until the fineness passes through a 325-mesh sieve with a residue of 0 - 0.5% to obtain vanadium-titanium slag slurry;

[0090] Ball mill and mix 7 - 12 parts of red mud and 8 - 13 parts of iron-removed slag with the vanadium-titanium slag slurry until the fineness passes through a 325-mesh sieve with a residue of 0 - 0.3% to obtain glaze rod slurry;

[0091] Sieve the glaze rod slurry, and dry the sieved glaze rod slurry under the conditions of a drying temperature of 170 - 190 °C and a drying time of 25 - 35 min to obtain glaze rod powder;

[0092] Add water to the glaze rod powder for grinding and granulation. The granulated glaze rod powder passes through a 40-mesh sieve, and the granulation moisture content is 9% - 11%;

[0093] Pour the glaze rod powder passing through a 40-mesh sieve into a cylindrical mold and press it into shape to obtain a formed glaze rod, where the forming pressure is 20 - 30 MPa;

[0094] After drying the formed glaze rod under the conditions of a drying temperature of 140 - 170 °C and a drying time of 25 - 35 min, perform polishing treatment to obtain a ceramic painting glaze rod, and the moisture content of the ceramic painting glaze rod is 1% - 1.5%.

[0095] Example 2

[0096] Take 70 parts of vanadium-titanium slag and ball mill it until the fineness passes through a 325-mesh sieve with a residue of 0 - 0.5% to obtain vanadium-titanium slag slurry;

[0097] Ball mill and mix 5 parts of red mud and 5 parts of iron-removed slag with the vanadium-titanium slag slurry until the fineness passes through a 325-mesh sieve with a residue of 0 - 0.3% to obtain glaze rod slurry;

[0098] Sieve the glaze rod slurry, and dry the sieved glaze rod slurry under the conditions of a drying temperature of 150 °C and a drying time of 20 min to obtain glaze rod powder;

[0099] Add water to the glaze rod powder for grinding and granulation. After granulation, the glaze rod powder is sieved through a 40-mesh sieve, and the granulation moisture content is 8%;

[0100] Pour the glaze rod powder sieved through a 40-mesh sieve into a cylindrical mold and press it into shape to obtain a formed glaze rod, where the forming pressure is 10 MPa;

[0101] After drying the formed glaze rod under the conditions of a drying temperature of 130 °C and a drying time of 20 min, perform polishing treatment to obtain a ceramic painting glaze rod, and the moisture content of the ceramic painting glaze rod is 1%.

[0102] Example 3

[0103] Take 90 parts of vanadium-titanium slag for ball milling until the fineness passes through a 325-mesh sieve with a residue of 0 - 0.5% to obtain a vanadium-titanium slag slurry;

[0104] Ball mill and mix 15 parts of red mud and 15 parts of iron-removing slag with the vanadium-titanium slag slurry until the fineness passes through a 325-mesh sieve with a residue of 0 - 0.3% to obtain a glaze rod slurry;

[0105] Sieve the glaze rod slurry, and dry the sieved glaze rod slurry under the conditions of a drying temperature of 200 °C and a drying time of 40 min to obtain glaze rod powder;

[0106] Add water to the glaze rod powder for grinding and granulation. After granulation, the glaze rod powder is sieved through a 40-mesh sieve, and the granulation moisture content is 12%;

[0107] Pour the glaze rod powder sieved through a 40-mesh sieve into a cylindrical mold and press it into shape to obtain a formed glaze rod, where the forming pressure is 40 MPa;

[0108] After drying the formed glaze rod under the conditions of a drying temperature of 180 °C and a drying time of 40 min, perform polishing treatment to obtain a ceramic painting glaze rod, and the moisture content of the ceramic painting glaze rod is 2%.

[0109] The present invention provides a ceramic painting glaze rod and a preparation method thereof. The raw materials of the ceramic painting glaze rod include, by weight: 70-90 parts of vanadium-titanium slag, 5-15 parts of red mud, and 5-15 parts of iron removal slag. Among the raw materials of the ceramic painting glaze rod in the embodiment of the present application, the vanadium-titanium slag, red mud, and iron removal slag all belong to metallurgical slag, realizing the preparation of a black ceramic painting glaze rod using all-component metallurgical slag. Since the metallurgical slag is originally the tail slag after calcination, using these metallurgical slags to prepare ceramic painting materials, the color after high-temperature firing is the same as the color before firing, without color loss, solving the problem of inconsistent colors of the ceramic painting glaze rod before and after firing. Moreover, taking advantage of the strong plasticity of red mud in the metallurgical slag, no other binder needs to be added during the preparation of the glaze rod to meet the requirements of ceramic painting, solving the strength problem of preparing the ceramic painting glaze rod with all metallurgical slag. In addition, the present application also improves the utilization rate of metallurgical slag.

[0110] It should be understood that the application of the present invention is not limited to the above examples. For those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. A ceramic painting glaze stick, characterized in that: The raw materials of the ceramic painting glaze stick include, by weight: 70-90 parts of vanadium-titanium slag, 5-15 parts of red mud, and 5-15 parts of iron removal slag; The chemical components of the vanadium-titanium slag include, by mass percentage: Loss on ignition 1%~1.5%, Al2O3 3.5%~5%, SiO2 12%~20%, Fe2O3 40%~50%, CaO 2%~4%, MgO 2.5%~4%, K2O 0.01%~0.05%, Na2O 3.5%~6%, TiO29%~15%, MnO 7%~12%, Cr2O3 2%~6%, V2O5 0.5%~2%; The phases of the vanadium-titanium slag include: hematite, ferromanganese spinel, ilmenite, magnesia-iron titanite, clinovanadium titanite and rutile; The chemical components of the red mud include, by mass percentage: Ignition loss 8%~12%, Al2O3 18.5%~23%, SiO2 12.5%~18.5%, Fe2O330.5%~40%, CaO 4.5%~6.5%, MgO 0.1%~0.5%, K2O 0.1%~1%, Na2O5%~8%, TiO2 3%~6%; The chemical components of the iron removal slag include, by mass percentage: Loss on ignition 3.5%~5%, Al2O3 12%~18%, SiO2 60%~70%, Fe2O3 6%~15%, CaO 1%~3%, MgO 1%~3%, K2O 1%~4%, Na2O 2%~5%, TiO2 0.5%~2%; The ceramic painting glaze rod is used for artistic ceramic painting. The raw materials of the ceramic painting glaze rod are all metallurgical slag. The color of the ceramic painting glaze rod after high-temperature firing is consistent with the color before firing. The strength of the ceramic painting glaze rod is greater than 2MPa.

2. A method for preparing a ceramic painting glaze rod as claimed in claim 1, characterized in that: The preparation method of the ceramic painting glaze stick comprises: 70 to 90 parts of vanadium-titanium slag are ball-milled to obtain vanadium-titanium slag slurry; 5 to 15 parts of red mud, 5 to 15 parts of iron removal slag and the vanadium-titanium slag slurry are ball-milled to obtain glaze rod slurry; Processing the glaze rod slurry to obtain a formed glaze rod; The molded glaze rod is dried and then polished to obtain a ceramic painting glaze rod.

3. The method for preparing a ceramic painting glaze rod according to claim 2, characterized in that: The fineness of the vanadium-titanium slag slurry is 0-0.5% of the residue after passing through a 325-mesh sieve.

4. The method for preparing a ceramic painting glaze rod according to claim 2, characterized in that: The fineness of the glaze rod slurry is 0-0.3% after passing through a 325-mesh sieve.

5. The method for preparing a ceramic painting glaze rod according to claim 2, characterized in that: The glaze rod slurry is processed to obtain a formed glaze rod, comprising: The glaze rod slurry is screened, and the screened glaze rod slurry is dried at a drying temperature of 150-200° C. and a drying time of 20-40 min to obtain a glaze rod powder; The glaze rod powder is added with water for grinding and granulation, and the granulated glaze rod powder is passed through a 40-mesh sieve, and the granulation water content is 8% to 12%; Pour the glaze rod powder that has passed through a 40-mesh screen into a mold and press it into shape to obtain a molded glaze rod, wherein the molding pressure is 10-40 MPa.

6. The method for preparing a ceramic painting glaze rod according to claim 2, characterized in that: The formed glaze rod is dried and then polished to obtain a ceramic painting glaze rod, comprising: The molded glaze rod is dried at a drying temperature of 130-180° C. and a drying time of 20-40 minutes, and then polished to obtain a ceramic painting glaze rod, wherein the moisture content of the ceramic painting glaze rod is 0%-2%.

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