Ceramic painting glaze rod and preparation method thereof

Abstract

The invention provides a ceramic painting glaze rod and a preparation method thereof, and the ceramic painting glaze rod comprises the following raw materials in parts by weight: 70-90 parts of vanadium-titanium slag, 5-15 parts of red mud and 5-15 parts of deironing slag. In the raw materials of the ceramic painting glaze rod, the vanadium-titanium slag, the red mud and the deironing slag all belong to metallurgical slag, and the black ceramic painting glaze rod is prepared from the full-component metallurgical slag. The metallurgical slag is originally calcined tailings, so that the color of the ceramic painting material prepared from the metallurgical slag after high-temperature firing is consistent with the color before firing, color loss is avoided, and the problem that the color of the ceramic painting glaze rod before and after firing is inconsistent is solved. Moreover, by utilizing the characteristic of strong plasticity of the red mud in the metallurgical slag, the ceramic painting requirement can be met without adding other binders in the glaze rod preparation process, and the strength problem of the ceramic painting glaze rod prepared from the full metallurgical slag is solved. In addition, the utilization rate of the metallurgical slag is further increased.

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 rod, wherein the raw materials of the ceramic painting glaze rod 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%, CaO2%~4%, MgO 2.5%~4%, K2O 0.01%~0.05%, Na2O 3.5%~6%, TiO29%~15%, MnO7%~12%, Cr2O3 2%~6%, V2O5 0.5%~2%.

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

[0012] In one embodiment of the present application, the physical phases of the vanadium-titanium slag include: hematite, ferromanganese spinel, ilmenite, magnesia-iron titanite, clinovanadium titanite and rutile.

[0013] According to the above technical means, the embodiment of the present application utilizes the combination of various metal oxide crystal phases in the raw materials to prepare black glaze rod material.

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

[0015] Loss on ignition 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%.

[0016] According to the above technical means, the red mud in the raw material of the embodiment of the present application has high plasticity, which can provide the strength of the glaze stick painting, and the prepared glaze stick can be adjusted according to the painting performance. In addition, the red mud itself has strong plasticity, and no other binder needs to be added during the preparation of the glaze stick to meet the requirements of ceramic painting. Using red mud to prepare ceramic painting glaze sticks can greatly reduce the environmental pollution caused by the stacking of red mud and improve the utilization rate of red mud.

[0017] In one embodiment of the present application, the chemical components of the iron removal slag include, by mass percentage:

[0018] Loss on ignition 3.5%~5%, Al2O3 12%~18%, SiO2 60%~70%, Fe2O3 6%~15%, CaO1%~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 utilizes 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 the iron removal slag.

[0020] A second aspect of the present application provides a method for preparing the ceramic painting glaze rod as described above, wherein the method for preparing the ceramic painting glaze rod comprises:

[0021] 70 to 90 parts of vanadium-titanium slag are ball-milled to obtain vanadium-titanium slag slurry;

[0022] 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;

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

[0024] The molded glaze rod is dried and then polished to obtain a ceramic painting glaze rod.

[0025] According to the above technical means, the reason why segmented ball milling is adopted in the embodiment of the present application is that the iron removal slag itself is the slurry after ball milling, and the red mud raw material has a very fine fineness. Therefore, the red mud and the iron removal slag do not need to be ball milled together with the vanadium-titanium slag, which can reduce energy consumption and prevent the iron removal slag and red mud from being ground too finely, thereby affecting the performance of the product.

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

[0027] In one embodiment of the present application, the fineness of the vanadium-titanium slag slurry is 0-0.5% after passing through 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% with a 325 mesh sieve residue, and the fine particles are easier to achieve uniform distribution during the mixing process, so that the subsequent vanadium-titanium slag slurry is mixed more evenly with red mud and iron removal slag.

[0029] In one embodiment of the present application, the fineness of the glaze rod slurry is 0-0.3% after passing through 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 lower 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, comprising:

[0032] Screening the glaze rod slurry, and drying the screened glaze rod slurry at 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 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%;

[0034] 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.

[0035] According to the above technical means, the embodiment of the present application screens the glaze rod slurry to 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 20-40min can ensure that the moisture in the glaze rod powder is effectively removed, while avoiding cracks or deformation caused by excessive drying, thereby improving the stability of the glaze rod powder and the quality of subsequent molding. 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% to 12% helps to ensure that the glaze rod powder has good fluidity and plasticity during the pressing and molding process, thereby obtaining a more dense and uniform molded glaze rod. Using a mold for pressing and molding can ensure that the molded glaze rod has a precise size and shape. Pressing under appropriate molding pressure can make the glaze rod powder particles more tightly bonded, 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 molded glaze rod is dried and then polished to obtain a ceramic painting glaze rod, comprising:

[0037] 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%.

[0038] According to the above technical means, the embodiment of the present application dries the molded glaze rod at a drying temperature of 130-180°C and a drying time of 20-40min, which helps to evaporate the water inside the glaze rod evenly, reduces the internal stress caused by the rapid evaporation of water, and thus avoids the 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 lines and color effects during the painting process. Controlling the moisture content of the ceramic painting glaze rod to 0%-2% helps to prevent cracking or deformation caused by moisture changes during subsequent use or storage, and the appropriate moisture content helps the fluidity and adhesion of the glaze during the painting process. Therefore, the embodiment 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 rate.

[0039] Beneficial effects of this application:

[0040] (1) Solved the problem of the formula system of metallurgical slag used in cultural architectural ceramic painting materials. Through high-temperature sintering process, the harmful components in 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 made of metallurgical slag. By taking advantage of the strong plasticity of red mud in metallurgical slag, no other binder needs to be added during the preparation of glaze rods to meet the requirements of ceramic painting.

[0042] (3) Solved the problem of inconsistent colors of ceramic painting glaze rods before and after firing. Metallurgical slag is the tailings after calcination. Therefore, using these metallurgical slag to prepare ceramic painting materials, the color after high-temperature firing is consistent with the color before firing, which is conducive to painting creation.

[0043] (4) Solved the problem of recycling metallurgical solid waste. Using metallurgical solid waste resources to prepare ceramic painting materials with high added value can not only improve resource utilization and reduce waste, but also develop a new high value-added material, which is of great practical significance for the development of circular economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 The present invention is a flow chart of a preferred embodiment of a method for preparing a ceramic painting glaze stick. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention clearer and more specific, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The first difficulty in combining sketch painting with artistic ceramics lies in the production of brushes. Painting on the ceramic surface must have the same tactile feel as the surface of paper, and at the same time have a soft texture, a smooth and smooth feel, and a comfortable and natural way of holding the pen. The second difficulty is that artistic ceramics are fired at high temperatures, and some mineral raw materials lose color severely after high-temperature firing.

[0047] At the same time, with the development of traditional industrial and mining industries and related regions, the amount of bulk solid waste generated is gradually increasing. If these metallurgical slags cannot be effectively utilized, it will bring huge resistance to the green upgrading and development of traditional industrial and mining industries. Therefore, the embodiment of the present application uses bulk solid wastes such as metallurgical slag to prepare sketch materials suitable for artistic ceramic painting.

[0048] The embodiment of the present application provides a ceramic painting glaze stick, and the raw materials of the ceramic painting glaze stick include, by weight:

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

[0050] Among the raw materials of the ceramic painting glaze rods in the embodiments of the present application, vanadium-titanium slag, red mud and iron removal slag are all metallurgical slags, 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, it is possible to meet the requirements of ceramic painting in the process of preparing glaze rods without adding other binders, 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.

[0051] In the embodiment of the present application, the chemical components of the vanadium-titanium slag, measured by mass percentage, include: loss on ignition 1%~1.5%, Al2O3 3.5%~5%, SiO2 12%~20%, Fe2O3 40%~50%, CaO2%~4%, MgO 2.5%~4%, K2O 0.01%~0.05%, Na2O 3.5%~6%, TiO2 9%~15%, MnO 7%~12%, Cr2O3 2%~6%, and V2O5 0.5%~2%.

[0052] Specifically, vanadium-titanium slag is a smelting waste slag containing vanadium and titanium, which mainly comes from the steelmaking and ironmaking processes. The embodiment of the present application utilizes a large amount of vanadium-titanium slag to prepare ceramic painting glaze rods, which can greatly reduce the environmental pollution caused by the stacking of vanadium-titanium slag and improve the utilization rate of vanadium-titanium slag.

[0053] In one embodiment of the present application, the physical phases of the vanadium-titanium slag include: hematite, ferromanganese spinel, ilmenite, magnesia-iron titanite, clinovanadium titanite and rutile.

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

[0055] The present embodiment utilizes the composite of various metal oxide crystal phases in the raw materials to prepare black glaze rod materials. Since these metallurgical slags are basically calcined raw materials, the color consistency of the glaze rod before and after painting is good.

[0056] In the examples of the present application, the chemical components of the red mud, measured by mass percentage, include:

[0057] Loss on ignition 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%.

[0058] Specifically, red mud is an industrial solid waste discharged when the aluminum industry extracts alumina, and contains a large amount of iron oxide. The plasticity index IP of the red mud is greater than 20. The red mud has high plasticity and can provide the strength of glaze stick painting. The prepared glaze stick can be adjusted according to the painting performance, and the strength is greater than 2MPa. In addition, the red mud itself has strong plasticity, and no other binder needs to be added during the preparation of the glaze stick to meet the requirements of ceramic painting.

[0059] The embodiment of the present application utilizes red mud to prepare ceramic painting glaze rods, which 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 the present application, the chemical components of the iron removal slag include, by mass percentage:

[0061] Loss on ignition 3.5%~5%, Al2O3 12%~18%, SiO2 60%~70%, Fe2O3 6%~15%, CaO1%~3%, MgO 1%~3%, K2O 1%~4%, Na2O 2%~5%, TiO2 0.5%~2%.

[0062] Specifically, the deironing slag is the deironing slag collected after the slurry of the ceramic industry raw materials or formulas is deironed by the deironing device. The embodiment of the present application uses the deironing slag to prepare ceramic painting glaze rods, which can greatly reduce the environmental pollution caused by the stacking of deironing slag and improve the utilization rate of the deironing slag.

[0063] The embodiment of the present application utilizes metallurgical solid waste resources to prepare ceramic painting materials with high added value, thereby improving resource utilization and reducing waste.

[0064] See also Figure 1 , Figure 1 1 is a flow chart of the method for preparing the ceramic painting glaze rod as described above in the present invention. Figure 1 As shown, the method for preparing the ceramic painting glaze stick according to the embodiment of the present invention comprises the following steps:

[0065] Step S100, taking 70-90 parts of vanadium-titanium slag and ball-milling them to obtain vanadium-titanium slag slurry;

[0066] Step S200, ball-milling 5 to 15 parts of red mud, 5 to 15 parts of iron removal slag and the vanadium-titanium slag slurry to obtain glaze rod slurry;

[0067] Step S300, processing the glaze rod slurry to obtain a formed glaze rod;

[0068] Step S400, drying the formed glaze rod and then performing a polishing process to obtain a ceramic painting glaze rod.

[0069] Specifically, the reason why the embodiment of the present application adopts segmented ball milling is that the iron removal slag itself is the slurry after ball milling, and the red mud raw material is very fine. Therefore, the red mud and the 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 prevent the iron removal slag and red mud from being ground too finely and affecting the performance of the product.

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

[0071] In the embodiment of the present application, the fineness of the vanadium-titanium slag slurry is 0-0.5% after passing through a 325-mesh sieve. Specifically, the vanadium-titanium slag is ball-milled to obtain a vanadium-titanium slag slurry that meets a predetermined fineness, and the predetermined fineness is 0-0.5% after passing through a 325-mesh sieve. In the embodiment of the present application, the fineness of the vanadium-titanium slag slurry is controlled at 0-0.5% after passing through a 325-mesh sieve, and fine particles are more easily evenly distributed during the mixing process, so that the subsequent vanadium-titanium slag slurry is mixed more evenly with red mud and iron removal slag.

[0072] In one embodiment of the present application, the fineness of the glaze rod slurry is 0-0.3% after passing through 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, the step S300 specifically includes:

[0074] Step S310, sieving the glaze rod slurry, and drying the sieved glaze rod slurry at a drying temperature of 150-200° C. and a drying time of 20-40 min to obtain glaze rod powder;

[0075] Step S320, adding water to the glaze rod powder to grind and granulate the glaze rod powder, and the granulated glaze rod powder passes through a 40-mesh sieve, and the granulation moisture content is 8% to 12%;

[0076] Step S330, pouring the glaze rod powder that has passed through a 40-mesh screen into a mold, pressing and molding to obtain a molded glaze rod, wherein the molding pressure is 10-40 MPa.

[0077] Specifically, granulation moisture refers to the moisture content contained in the glaze rod powder during the preparation of granulation. Too high 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, keeping the granulation moisture at 8% to 12% can ensure that the prepared ceramic painting glaze rod meets the quality standards. The embodiment of the present application can also adopt different molding 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 a polygon, such as a hexagon.

[0078] In the embodiment of the present application, the glaze rod slurry is screened to 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 20-40min can ensure that the moisture in the glaze rod powder is effectively removed, while avoiding cracks or deformation caused by excessive drying, thereby improving the stability of the glaze rod powder and the quality of subsequent molding. 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% to 12% helps to ensure that the glaze rod powder has good fluidity and plasticity during the pressing and molding process, thereby obtaining a more dense and uniform molded glaze rod. Using a mold for pressing and molding can ensure that the molded glaze rod has a precise size and shape. Pressing under appropriate molding pressure can make the glaze rod powder particles more closely bonded, 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.

[0079] In one embodiment of the present application, the step S400 is specifically as follows: drying the formed glaze rod at a drying temperature of 130-180° C. and a drying time of 20-40 min, and then performing a polishing treatment to obtain a ceramic painting glaze rod, wherein 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 painting performance requirements.

[0081] The embodiment of the present application dries the molded glaze rod at a drying temperature of 130-180°C and a drying time of 20-40 minutes, which helps to evaporate the moisture inside the glaze rod evenly and reduce the internal stress caused by 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. Polishing can remove tiny bumps and uneven parts on the surface of the glaze rod, making its surface smoother and brighter, which helps to obtain more delicate and uniform lines and color effects during the painting process. Controlling the moisture content of the ceramic painting glaze rod to 0%-2% helps prevent cracking or deformation problems caused by moisture changes during subsequent use or storage. The appropriate moisture content helps the fluidity and adhesion of the glaze during the painting process.

[0082] The embodiment 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 due to glaze rod quality problems and improve the yield rate.

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

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

[0085] Second, the use of metallurgical solid waste to prepare ceramic painting glaze rod materials can completely replace painting glaze rods made of black pigments, greatly reducing costs and improving the competitiveness of enterprises.

[0086] Third, the use of all metallurgical slag to prepare ceramic painting materials improves the utilization rate of metallurgical slag and realizes the resource utilization of large-scale industrial solid waste.

[0087] Specific embodiments are listed below for illustration.

[0088] Embodiment 1

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

[0090] 7-12 parts of red mud, 8-13 parts of iron removal slag and the vanadium-titanium slag slurry are ball-milled and mixed until the fineness exceeds 0-0.3% of the residue on a 325-mesh sieve, to obtain a glaze rod slurry;

[0091] The glaze rod slurry is screened, and the screened glaze rod slurry is dried under the conditions of a drying temperature of 170-190° C. and a drying time of 25-35 min to obtain a glaze rod powder;

[0092] 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 moisture content is 9% to 11%;

[0093] Pour the glaze rod powder that has passed through a 40-mesh screen into a cylindrical mold and press to form a shaped glaze rod, wherein the molding pressure is 20-30 MPa;

[0094] The molded glaze rod is dried at a drying temperature of 140-170° C. and a drying time of 25-35 minutes, and then polished to obtain a ceramic painting glaze rod, wherein the moisture content of the ceramic painting glaze rod is 1%-1.5%.

[0095] Embodiment 2

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

[0097] 5 parts of red mud, 5 parts of iron removal slag and the vanadium-titanium slag slurry are ball-milled and mixed until the fineness exceeds 0-0.3% of the 325-mesh sieve residue, to obtain a glaze rod slurry;

[0098] The glaze rod slurry is screened, and the screened glaze rod slurry is dried under the conditions of a drying temperature of 150° C. and a drying time of 20 min to obtain a glaze rod powder;

[0099] 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 moisture content is 8%;

[0100] Pour the glaze rod powder that has passed through a 40-mesh screen into a cylindrical mold and press to form a shaped glaze rod, wherein the molding pressure is 10 MPa;

[0101] The molded glaze rod is dried at a drying temperature of 130° C. and a drying time of 20 min, and then polished to obtain a ceramic painting glaze rod, wherein the moisture content of the ceramic painting glaze rod is 1%.

[0102] Embodiment 3

[0103] Take 90 parts of vanadium-titanium slag and ball-mill until the fineness is 0-0.5% of the residue on a 325-mesh sieve to obtain vanadium-titanium slag slurry;

[0104] 15 parts of red mud, 15 parts of iron removal slag and the vanadium-titanium slag slurry are ball-milled and mixed until the fineness exceeds 0-0.3% of the 325-mesh sieve residue, to obtain a glaze rod slurry;

[0105] The glaze rod slurry is screened, and the screened glaze rod slurry is dried under the conditions of a drying temperature of 200° C. and a drying time of 40 min to obtain a glaze rod powder;

[0106] 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 moisture content is 12%;

[0107] Pour the glaze rod powder that has passed through a 40-mesh screen into a cylindrical mold and press to form a shaped glaze rod, wherein the molding pressure is 40 MPa;

[0108] The molded glaze rod is dried at a drying temperature of 180° C. and a drying time of 40 minutes, and then polished to obtain a ceramic painting glaze rod, wherein 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 to 90 parts of vanadium-titanium slag, 5 to 15 parts of red mud, and 5 to 15 parts of iron-removing 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-removing 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, the color of ceramic painting materials prepared by using these metallurgical slags is consistent with the color before firing after high-temperature 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 the glaze rod, which solves the strength problem of preparing ceramic painting glaze rods using 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 ordinary technicians in this field, improvements or changes can be made based on the above description. All these improvements and changes should fall within the scope of protection of the claims attached to 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.

2. The ceramic painting glaze rod according to claim 1, characterized in that: 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%.

3. The ceramic painting glaze stick according to claim 1, characterized in that: The physical phases of the vanadium-titanium slag include: hematite, ferromanganese spinel, ilmenite, magnesia-iron titanite, clinovanadium titanite and rutile.

4. The ceramic painting glaze rod according to claim 1, characterized in that: The chemical components of the red mud include, by mass percentage: Loss on ignition 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%.

5. The ceramic painting glaze stick according to claim 1, characterized in that: 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%.

6. A method for preparing a ceramic painting glaze rod according to any one of claims 1 to 5, 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 formed glaze rod is dried and then polished to obtain a ceramic painting glaze rod.

7. The method for preparing a ceramic painting glaze rod according to claim 6, 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.

8. The method for preparing a ceramic painting glaze rod according to claim 6, characterized in that: The fineness of the glaze rod slurry is 0-0.3% after passing through a 325-mesh sieve.

9. The method for preparing a ceramic painting glaze rod according to claim 6, characterized in that: The glaze rod slurry is processed to obtain a formed glaze rod, comprising: Screening the glaze rod slurry, and drying the screened glaze rod slurry at a drying temperature of 150-200° C. and a drying time of 20-40 min to obtain 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.

10. The method for preparing a ceramic painting glaze rod according to claim 6, 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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