Crystal flower dry granular glaze, positioning crystal flower rock plate prepared from crystal flower dry granular glaze and preparation method of positioning crystal flower rock plate

Abstract

The invention relates to the technical field of rock plate preparation, in particular to crystal flower dry granular glaze, a positioning crystal flower rock plate prepared from the crystal flower dry granular glaze and a preparation method of the positioning crystal flower rock plate. The crystal flower dry granular glaze comprises the following raw materials in percentage by mass: 55%-60% of potassium feldspar, 6%-8% of albite, 12%-15% of quartz, 6%-8% of dolomite, 5%-6% of zinc oxide, 4%-5% of calcium carbonate and 4%-5% of talc. According to the present invention, the positioning crystal rock plate can be provided, has the flashing effect, can achieve the resource utilization of the industrial waste residue, can reduce the dependence on the natural mineral, and has significant environmental and economic benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of rock slab preparation, and specifically to a crystal flower dry granule glaze, a positioning crystal flower rock slab prepared using the crystal flower dry granule glaze, and a preparation method thereof. Background Art

[0002] Rock slabs are materials widely used in architectural decoration, and their preparation processes and decorative effects have always been the focus of industry research. Crystal flower dry granule glaze is a unique ceramic glaze. Through specific preparation processes and firing systems, this glaze can form beautiful crystal flower patterns on rock slabs, adding unique artistic beauty to ceramic products.

[0003] Traditional ceramic tiles and glazes usually rely on natural mineral raw materials such as feldspar, quartz, kaolin, etc. The mining and use of these raw materials not only consume a large amount of natural resources but also cause certain pressure on the environment. In recent years, with the enhancement of environmental awareness and the promotion of the concept of sustainable development, how to use industrial waste to replace some natural raw materials, reduce production costs and environmental pollution has become an important research direction in the ceramic industry.

[0004] Red mud is an industrial waste residue generated during the production of alumina, and its main components are iron oxide, alumina, silicon dioxide, etc. Due to the high alkalinity and heavy metal components in red mud, its treatment and disposal have been a difficult problem for a long time. If directly stacked, it not only occupies a large amount of land resources but may also pollute the soil and water bodies. However, the silicon, aluminum, iron, etc. elements rich in red mud are similar in chemical composition to ceramic raw materials. Therefore, using red mud as one of the raw materials for preparing ceramic tiles can not only realize the resource utilization of industrial waste residues but also reduce the dependence on natural minerals, with significant environmental and economic benefits. Summary of the Invention

[0005] The purpose of the present invention is to provide a crystal flower dry granule glaze, a positioning crystal flower rock slab prepared using the crystal flower dry granule glaze, and a preparation method thereof to solve the problems existing in the prior art.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] A preparation method of a positioning crystal flower rock slab, comprising the following steps:

[0008] (1) Mix red mud and pure water in a mass ratio of 1:(9 - 10), soak at 80 - 90 °C for 60 - 70 min, and filter to obtain preliminarily de-alkalized red mud and alkaline filtrate; mix the preliminarily de-alkalized red mud, phosphogypsum, and pure water in a mass ratio of 1:(0.4 - 0.6):(50 - 60) for 30 - 40 min, and obtain mixture A after filtration, washing, and drying;

[0009] (2) After granulating the green body powder through a spray tower, use a feeding system for feeding, and form a brick blank by roll pressing or stamping; spray the alkaline filtrate on the surface of the green body, rinse with running water after 60 s, and dry at 180 - 220 °C for 60 - 70 min to obtain a pretreated brick blank;

[0010] (3) Apply a base glaze on the surface of the pretreated brick blank. The process parameters for applying the base glaze are: specific gravity of 1.89 ± 0.02 g / mL, glaze application amount of 400 - 480 g / m 2 ;

[0011] (4) After applying the base glaze, inkjet print patterns and spray positioning glue on the surface of the base glaze;

[0012] (5) Use a dry particle machine to apply crystal flower dry particle glaze and recycle the excess crystal flower dry particle glaze; the process parameters for applying the crystal flower dry particle glaze are: specific gravity of 1.15 - 1.20 g / mL, glaze application amount of 200 - 300 g / m 2 ;

[0013] (6) Spray zircon sand;

[0014] (7) Finally, send it into a kiln for firing and polish it using a full polishing process to obtain a positioned crystal flower rock slab. The firing temperature is 1150 - 1200 °C, and the firing cycle is 40 - 60 min.

[0015] Preferably, the red mud described in step (1) is produced by the Bayer process.

[0016] Preferably, the green body powder described in step (2) includes: by mass percentage, 50% - 60% of potassium feldspar, 20% - 25% of mixture A, 5% - 15% of talc, 3% - 6% of wollastonite, 5% - 8% of quartz, 4% - 8% of kaolin, and 4% - 6% of dolomite.

[0017] Preferably, the chemical composition of the green body powder described in step (2) includes: by mass percentage, SiO 2: 65% - 68%, Al2O3: 17% - 19%, Fe2O3: 1.5% - 1.6%, TiO2: 0.1% - 0.2%, CaO: 2.2% - 2.5%, MgO: 1.5% - 1.8%, K2O: 3.0% - 3.2%, Na2O: 2.3% - 2.6%, P2O5: 0.1% - 0.3%, SO3: 0.1% - 0.3%, loss on ignition: 1.2% - 4.3%.

[0018] Preferably, the raw materials of the base glaze in step (3) include, by mass percentage, 40% - 45% of potassium feldspar, 5% - 10% of albite, 8% - 10% of kaolin, 3% - 5% of calcined kaolin, 10% - 15% of quartz, 5% - 15% of nepheline, 8% - 12% of zirconia, 2% - 4% of spodumene, and 4% - 6% of calcined talc.

[0019] Preferably, the chemical composition of the raw materials of the base glaze in step (3) includes: by mass percentage, SiO2: 55% - 60%, Al2O3: 16% - 18%, Fe2O3: 0.3% - 0.5%, TiO2: 0.2% - 0.3%, CaO: 1.5% - 2.5%, MgO: 1.5% - 2.5%, K2O: 4.0% - 5.0%, Na2O: 2.0% - 3.0%, ZrO2: 8% - 12%, Li2O: 0.3% - 0.5%, loss on ignition: 3.0% - 5.0%.

[0020] Preferably, the preparation method of the crystal flower dry granule glaze in step (5) is as follows: Mix the raw materials of the crystal flower dry granule glaze according to the ratio, calcine at a temperature of 1300 - 1400 °C, perform water quenching, and then process into dry granules with a mesh size of 30 - 100.

[0021] Preferably, the raw materials of the crystal flower dry granule glaze include, by mass percentage, 55% - 60% of potassium feldspar, 6% - 8% of albite, 12% - 15% of quartz, 6% - 8% of dolomite, 5% - 6% of zinc oxide, 4% - 5% of calcium carbonate, and 4% - 5% of talc.

[0022] Preferably, the chemical composition of the raw materials of the crystal flower dry granule glaze includes: by mass percentage, SiO2: 55% - 60%, Al2O3: 14% - 16%, K2O: 6% - 7%, Na2O: 1.5% - 2.5%, CaO: 6% - 8%, MgO: 1.5% - 2.5%, ZnO: 5% - 6%, loss on ignition: 2% - 4%.

[0023] Preferably, the particle size of the zircon sand in step (5) is 80 - 150 mesh, and the mass percentages of its main components are ZrO2 ≥ 65%, Fe2O3 ≤ 0.03%, and TiO2 ≤ 0.03.

[0024] The present invention also provides a positioning crystal flower rock slab prepared by the preparation method according to any one of the above.

[0025] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0026] The raw material composition of the rock slab in the positioning crystal flower rock slab prepared by the present invention includes a mixture A; the mixture A is obtained by mixing phosphogypsum and red mud. Red mud is an industrial waste residue generated during the production of alumina, and its main components are iron oxide, alumina, silica, etc. Due to the high alkalinity and heavy metal components in red mud, its treatment and disposal have always been a difficult problem. If directly stacked, it will not only occupy a large amount of land resources but also may pollute the soil and water bodies. However, the silicon, aluminum, iron and other elements rich in red mud are similar to the chemical components of ceramic raw materials. Therefore, using red mud as one of the raw materials for preparing ceramic tiles can not only realize the resource utilization of industrial waste residues but also reduce the dependence on natural minerals, with significant environmental and economic benefits. First, mixing red mud with pure water can remove most of the free alkali in the red mud, and the filtrate obtained by filtration is a strongly alkaline filtrate. Continuing to mix the washed red mud with phosphogypsum can further remove the chemically bound alkali in the red mud. After alkali removal, the red mud and phosphogypsum do not need to be separated, and the two can be used as a mixture to form the blank powder of the rock slab together.

[0027] After the blank powder is made into a brick blank, the above-mentioned strongly alkaline filtrate can be used as an etching solution to etch the surface of the brick blank, forming micropores on the surface, increasing the roughness, and enhancing the bonding strength between the bottom glaze and the brick blank surface, so that the strongly alkaline filtrate can be reused instead of being directly discharged to cause pollution.

[0028] In addition, ZrO2 in the bottom glaze forms an opacifying effect to cover the background color of the blank; a high-definition pattern is printed using a digital inkjet printer, and then positioning glue is sprayed and crystal flower dry glaze is precisely applied through a dry particle machine, and the unadhered dry particles are recycled to reduce losses; the spraying of zircon sand can present a flash effect. Specific Embodiments

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0030] In the following examples and comparative examples, the zircon sand has a particle size of 100 mesh, and the mass percentages of its main components are ZrO2≥65%, Fe2O3≤0.03%, TiO2≤0.03; the red mud is produced by the Bayer process.

[0031] Example 1:

[0032] A preparation method of a positioning crystal flower rock slab, the preparation method includes the following preparation steps:

[0033] (1) Mix red mud and pure water at a mass ratio of 1:9, soak at 90 °C for 70 min, and filter to obtain initially de-alkalized red mud and alkaline filtrate; mix the initially de-alkalized red mud, phosphogypsum, and pure water at a mass ratio of 1:0.4:50 for 40 min, and obtain mixture A after filtration, washing, and drying;

[0034] (2) Weigh the green body powder; the green body powder includes: by mass percentage, potassium feldspar 55%, mixture A 20%, talc 6%, wollastonite 4.5%, quartz 6.5%, kaolin 5%, dolomite 3%; the chemical composition of the green body powder includes: by mass percentage, SiO2: 66.5%, Al2O3: 18.0%, Fe2O3: 1.55%, TiO2: 0.15%, CaO: 2.35%, MgO: 1.65%, K2O: 3.1%, Na2O: 2.45%, P2O5: 0.02%, SO3: 0.02%, loss on ignition: 4.21%; after granulating the green body powder through a spray tower, use a feeding system for feeding, and form a brick blank by roll pressing or stamping; spray the alkaline filtrate on the surface of the green body; after 60 s, rinse with running water and dry at 220 °C for 70 min to obtain a pretreated brick blank;

[0035] (3) Apply a base glaze on the surface of the pretreated brick blank by spraying. The process parameters for applying the base glaze are: specific gravity of 1.89 g / mL, glaze application amount of 400 g / m 2 ; the raw materials of the base glaze include: by mass percentage, potassium feldspar 42%, albite 7%, kaolin 9%, calcined kaolin 4%, quartz 12%, nepheline 9%, zirconia 10%, spodumene 3%, calcined talc 4%; the chemical composition of the base glaze raw materials includes: by mass percentage, SiO2: 58.0%, Al2O3: 17.0%, Fe2O3: 0.4%, TiO2: 0.25%, CaO: 2.0%, MgO: 2.0%, K2O: 4.5%, Na2O: 2.5%, ZrO2: 9.9%, Li2O: 0.4%, loss on ignition: 3.05%;

[0036] (4) After applying the base glaze, use a digital inkjet printer to inkjet print patterns and a digital glue dry granulator to spray positioning glue on the surface of the base glaze;

[0037] (5) Use a dry granulator to apply crystal flower dry granulated glaze and use a recycling system to recover the excess crystal flower dry granulated glaze under negative pressure; the process parameters for applying the crystal flower dry granulated glaze are: specific gravity of 1.15 g / mL, glaze application amount of 220 g / m 2Mix the raw materials of the crystal flower dry granule glaze according to the ratio, calcine at a temperature of 1400 °C, perform water quenching, and then process them into 70-mesh dry granules. The raw materials of the crystal flower dry granule glaze include, by mass percentage, 58% potassium feldspar, 7.5% albite, 13% quartz, 7% dolomite, 5.5% zinc oxide, 4.5% calcium carbonate, and 4.5% talc. The chemical composition of the raw materials of the crystal flower dry granule glaze includes: by mass percentage, SiO2: 59.0%, Al2O3: 15.0%, K2O: 6.5%, Na2O: 2.0%, CaO: 7.0%, MgO: 2.0%, ZnO: 5.2%, loss on ignition: 3.3%;

[0038] (6) Spray zircon sand;

[0039] (7) Finally, send it into the kiln for firing and polish it using the full polishing process to obtain the positioned crystal flower rock slab. The firing temperature is 1200 °C, and the firing cycle is 60 min.

[0040] Example 2:

[0041] A preparation method of a positioned crystal flower rock slab, the preparation method comprising the following preparation steps:

[0042] (1) Mix red mud and pure water at a mass ratio of 1:10, soak at 80 °C for 60 min, and filter to obtain preliminarily de-alkalized red mud and alkaline filtrate; Mix the preliminarily de-alkalized red mud, phosphogypsum, and pure water at a mass ratio of 1:0.6:60 for 30 min, and obtain mixture A after filtration, washing, and drying;

[0043] (2) Weigh the body powder; The body powder includes: by mass percentage, 52% potassium feldspar, 21% mixture A, 6% talc, 5% wollastonite, 7% quartz, 6% kaolin, 3% dolomite; The chemical composition of the body powder includes: by mass percentage, SiO2: 67.0%, Al2O 3: 18.5%, Fe2O3: 1.5%, TiO2: 0.15%, CaO: 2.4%, MgO: 1.7%, K2O: 3.1%, Na2O: 2.5%, P2O5: 0.2%, SO3: 0.2%, loss on ignition: 2.75%; After granulating the body powder through a spray tower, use a feeding system for feeding, and form a brick blank by roll pressing or stamping; Spray the alkaline filtrate on the surface of the brick blank, rinse with running water after 60 s, and dry at 180 °C for 70 min to obtain a pretreated brick blank;

[0044] (3) Apply a base glaze on the surface of the pretreated brick blank by spraying. The process parameters for applying the base glaze are: specific gravity of 1.89 g / mL, glaze application amount of 480 g / m 2; The raw materials of the base glaze include: by mass percentage, potassium feldspar 43%, albite 8%, kaolin 9%, calcined kaolin 4%, quartz 11%, nepheline 9%, zirconia 9%, spodumene 3%, calcined talc 4%; The chemical composition of the base glaze raw materials includes: by mass percentage, SiO2: 58.0%, Al2O3: 18%, Fe2O3: 0.4%, TiO2: 0.2%, CaO: 1.8%, MgO: 2.2%, K2O: 4.2%, Na2O: 2.5%, ZrO 2: 8.5%, Li2O: 0.5%, loss on ignition: 3.7%;

[0045] (4) After applying the base glaze, use a digital inkjet printer to inkjet print patterns on the surface of the base glaze and use a digital glue dry particle machine to spray positioning glue;

[0046] (5) Use a dry particle machine to apply crystal flower dry particle glaze and use a recovery system to recover the excess crystal flower dry particle glaze under negative pressure; The process parameters for applying the crystal flower dry particle glaze are: specific gravity of 1.20 g / mL, glaze application amount of 250 g / m 2 ; Mix the crystal flower dry particle glaze raw materials according to the ratio and calcine at a temperature of 1350 °C, then water-quench and process into 50-mesh dry particles; The crystal flower dry particle glaze raw materials include, by mass percentage, potassium feldspar 58%, albite 6.5%, quartz 14%, dolomite 7.5%, zinc oxide 5.5%, calcium carbonate 4.5%, talc 4.5%; The chemical composition of the crystal flower dry particle glaze raw materials includes: by mass percentage, SiO 2: 57.0%, Al2O 3: 15.5%, K2O: 6.8%, Na2O: 2.2%, CaO: 7.5%, MgO: 2.2%, ZnO: 5.3%, loss on ignition: 3.5%;

[0047] (6) Spray zircon sand;

[0048] (7) Finally, send it into a kiln for firing and use a full polishing process to polish to obtain a positioned crystal flower rock slab. The firing temperature is 1150 °C and the firing cycle is 40 min.

[0049] Example 3:

[0050] A preparation method of a positioned crystal flower rock slab, the preparation method comprising the following preparation steps:

[0051] (1) Mix red mud and pure water in a mass ratio of 1:9.5, soak at 85 °C for 65 min, and filter to obtain primary de-alkalized red mud and alkaline filtrate; Mix the primary de-alkalized red mud, phosphogypsum, and pure water in a mass ratio of 1:0.5:55 for 35 min, and obtain mixture A after filtration, washing, and drying;

[0052] (2) Weigh the green body powder; the green body powder includes: by mass percentage, 52% potassium feldspar, 23% mixture A, 7% talc, 4% wollastonite, 6% quartz, 5% kaolin, and 3% dolomite; the chemical composition of the green body powder includes: by mass percentage, SiO2: 67.5%, Al2O3: 18.2%, Fe2O3: 1.52%, TiO2: 0.16%, CaO: 2.38%, MgO: 1.68%, K2O: 3.15%, Na2O: 2.5%, P2O5: 0.15%, SO3: 0.15%, loss on ignition: 3.8%; After granulating the green body powder through a spray tower, use a feeding system for feeding, and form a brick blank by roll pressing or stamping; Spray the alkaline filtrate on the surface of the green body; After 60 s, rinse with running water and dry at 200 °C for 65 min to obtain a pretreated brick blank;

[0053] (3) Apply a base glaze on the surface of the pretreated brick blank by spraying. The process parameters for applying the base glaze are: specific gravity of 1.89 g / mL and glaze application amount of 440 g / m 2 ; The raw materials of the base glaze include: by mass percentage, 44% potassium feldspar, 6% albite, 9% kaolin, 4% calcined kaolin, 13% quartz, 8% nepheline, 10% zirconia, 3% spodumene, and 4% calcined talc; the chemical composition of the base glaze raw materials includes: by mass percentage, SiO2: 58.5%, Al2O3: 17.5%, Fe2O3: 0.45%, TiO2: 0.22%, CaO: 2.2%, MgO: 2.1%, K2O: 4.8%, Na2O: 2.4%, ZrO2: 9.5%, Li2O: 0.45%, loss on ignition: 3.2%;

[0054] (4) After applying the base glaze, use a digital inkjet printer to inkjet print patterns and a digital glue dry granulator to spray positioning glue on the surface of the base glaze;

[0055] (5) Use a dry granulator to apply crystal flower dry granulated glaze and use a recycling system to recover the excess crystal flower dry granulated glaze under negative pressure; The process parameters for applying the crystal flower dry granulated glaze are: specific gravity of 1.17 g / mL and glaze application amount of 250 g / m 2 ; Mix the raw materials of the crystal flower dry granulated glaze according to the ratio, calcine at a temperature of 1350 °C, water quench, and then process into 60-mesh dry granules; The raw materials of the crystal flower dry granulated glaze include, by mass percentage, 56% potassium feldspar, 7% albite, 14% quartz, 6% dolomite, 5% zinc oxide, 4% calcium carbonate, and 3% talc; the chemical composition of the raw materials of the crystal flower dry granulated glaze includes: by mass percentage, SiO2: 57.5%, Al2O3: 15.5%, K2O: 6.2%, Na2O: 2.1%, CaO: 6.5%, MgO: 2.3%, ZnO: 5.1%, loss on ignition: 3.6%;

[0056] (6) Spraying zircon sand;

[0057] (7) Finally, it is sent into a kiln for firing and polished by a full polishing process to obtain a positioned crystal granite slab. The firing temperature is 1180 °C and the firing cycle is 50 min.

[0058] Example 4:

[0059] A preparation method of a positioned crystal granite slab, the preparation method comprising the following preparation steps:

[0060] (1) Mix red mud and pure water in a mass ratio of 1:9, soak at 85 °C for 60 min, and filter to obtain preliminarily de-alkalized red mud and alkaline filtrate; mix the preliminarily de-alkalized red mud, phosphogypsum, and pure water in a mass ratio of 1:0.4:50 for 30 min, and obtain mixture A after filtration, washing, and drying;

[0061] (2) Weigh the green body powder; the green body powder includes: by mass percentage, potassium feldspar 50%, mixture A 25%, talc 7%, wollastonite 3%, quartz 7%, kaolin 5%, dolomite 3%; the chemical composition of the green body powder includes: by mass percentage, SiO2: 65%, Al2O3: 19%, Fe2O3: 1.6%, TiO2: 0.2%, CaO: 2.5%, MgO: 1.8%, K2O: 3.2%, Na2O: 2.6%, P2O5: 0.3%, SO3: 0.3%, loss on ignition: 4.3%; after granulating the green body powder through a spray tower, use a cloth system for cloth laying, and form a brick blank by roll pressing or stamping; spray the alkaline filtrate on the surface of the green body; after 60 s, rinse with running water and dry at 180 °C for 70 min to obtain a pretreated brick blank;

[0062] (3) Apply a base glaze on the surface of the pretreated brick blank by spraying. The process parameters for applying the base glaze are: specific gravity is 1.89 g / mL, glaze application amount is 480 g / m 2 ; the raw materials of the base glaze include: by mass percentage, potassium feldspar 40%, albite 10%, kaolin 8%, calcined kaolin 3%, quartz 15%, nepheline 5%, zirconia 12%, spodumene 2%, calcined talc 4%; the chemical composition of the base glaze raw materials includes: by mass percentage, SiO2: 60%, Al2O3: 16%, Fe2O3: 0.5%, TiO2: 0.3%, CaO: 1.5%, MgO: 2.5%, K2O: 5.0%, Na2O: 3.0%, ZrO2: 8%, Li2O: 0.5%, loss on ignition: 5.0%;

[0063] (4) After applying the base glaze, use a digital inkjet printer to inkjet print patterns and a digital glue dry granulator to spray positioning glue on the surface of the base glaze;

[0064] (5) Apply crystal flower dry granule glaze using a dry granulator and recover the excess crystal flower dry granule glaze under negative pressure with a recycling system; the process parameters for applying the crystal flower dry granule glaze are: specific gravity of 1.15 g / mL and glaze application amount of 300 g / m 2 ; Mix the crystal flower dry granule glaze raw materials according to the ratio, calcine at a temperature of 1400 °C, water quench, and then process into 60-mesh dry granules; the crystal flower dry granule glaze raw materials include, by mass percentage, 55% potassium feldspar, 8% albite, 12% quartz, 6% dolomite, 6% zinc oxide, 4% calcium carbonate, and 5% talc; the chemical composition of the crystal flower dry granule glaze raw materials includes: by mass percentage, SiO2: 55%, Al2O3: 16%, K2O: 6%, Na2O: 2.5%, CaO: 8%, MgO: 2.5%, ZnO: 6%, loss on ignition: 4%;

[0065] (6) Spray zircon sand;

[0066] (7) Finally, send it into a kiln for firing and polish it using a full polishing process to obtain a positioned crystal flower rock slab. The firing temperature is 1200 °C and the firing cycle is 60 min.

[0067] Example 5:

[0068] A preparation method of a positioned crystal flower rock slab, the preparation method comprising the following preparation steps:

[0069] (1) Mix red mud and pure water at a mass ratio of 1:10, soak at 90 °C for 70 min, and filter to obtain primary de-alkalized red mud and alkaline filtrate; mix the primary de-alkalized red mud, phosphogypsum, and pure water at a mass ratio of 1:0.6:60 for 40 min, and obtain mixture A after filtration, washing, and drying;

[0070] (2) Weigh the body powder; the body powder includes: by mass percentage, 53% potassium feldspar, 22% mixture A, 6% talc, 5% wollastonite, 7% quartz, 4% kaolin, and 3% dolomite; the chemical composition of the body powder includes: by mass percentage, SiO2: 67%, Al2O3: 18%, Fe2O3: 1.5%, TiO2: 0.15%, CaO: 2.4%, MgO: 1.7%, K2O: 3.1%, Na2O: 2.5%, P2O5: 0.2%, SO3: 0.2%, loss on ignition: 3.0%; after granulating the body powder through a spray tower, use a batching system for batching, and form a brick blank by roll pressing or stamping; spray the alkaline filtrate on the surface of the brick blank; after 60 s, rinse with running water and dry at 220 °C for 60 min to obtain a pretreated brick blank;

[0071] (3) Apply a base glaze on the surface of the pretreated brick blank by spraying. The process parameters for applying the base glaze are: specific gravity of 1.89 g / mL and glaze application amount of 420 g / m 2; The raw materials of the base glaze include: by mass percentage, 45% potassium feldspar, 5% sodium feldspar, 9% kaolin, 4% calcined kaolin, 14% quartz, 10% nepheline, 8% zirconia, 3% spodumene, 4% calcined talc; The chemical composition of the base glaze raw materials includes: by mass percentage, SiO2: 56%, Al2O3: 18%, Fe2O3: 0.4%, TiO2: 0.2%, CaO: 2.0%, MgO: 2.2%, K2O: 4.5%, Na2O: 2.0%, ZrO2: 8%, Li2O: 0.4%, loss on ignition: 3.5%;

[0072] (4) After applying the base glaze, use a digital inkjet printer to inkjet print patterns on the surface of the base glaze and spray positioning glue with a digital glue dry granulator;

[0073] (5) Use a dry granulator to apply crystal flower dry granulated glaze and use a recycling system to recover the excess crystal flower dry granulated glaze by negative pressure; The process parameters for applying the crystal flower dry granulated glaze are: specific gravity of 1.17 g / mL, glaze application amount of 220 g / m 2 ; Mix the crystal flower dry granulated glaze raw materials according to the ratio, calcine at a temperature of 1300 °C, water quench, and then process into 50-mesh dry granules; The crystal flower dry granulated glaze raw materials include, by mass percentage, 57% potassium feldspar, 6% sodium feldspar, 13% quartz, 7% dolomite, 5% zinc oxide, 4% calcium carbonate, 3% talc; The chemical composition of the crystal flower dry granulated glaze raw materials includes: by mass percentage, SiO2: 58%, Al2O3: 14%, K2O: 6.5%, Na2O: 1.8%, CaO: 7.0%, MgO: 2.0%, ZnO: 5.0%, loss on ignition: 3.2%;

[0074] (6) Spray zircon sand;

[0075] (7) Finally, send it into a kiln for firing and polish it using a full polishing process to obtain a positioned crystal flower rock slab. The firing temperature is 1150 °C and the firing cycle is 45 min.

[0076] Example 6:

[0077] A preparation method of a positioned crystal flower rock slab, the preparation method comprising the following preparation steps:

[0078] (1) Mix red mud and pure water in a mass ratio of 1:9.5, soak at 80 °C for 65 min, and filter to obtain primary de-alkalized red mud and alkaline filtrate; Mix the primary de-alkalized red mud, phosphogypsum, and pure water in a mass ratio of 1:0.5:55 for 35 min, and filter, wash, and dry to obtain mixture A;

[0079] (2) Weigh the green body powder; the green body powder includes: by mass percentage, 50% potassium feldspar, 24% mixture A, 9% talc, 4% wollastonite, 6% quartz, 5% kaolin, 2% dolomite; the chemical composition of the green body powder includes: by mass percentage, SiO2: 66%, Al2O3: 18.5%, Fe2O3: 1.55%, TiO2: 0.16%, CaO: 2.35%, MgO: 1.65%, K2O: 3.1%, Na2O: 2.45%, P2O5: 0.05%, SO3: 0.05%, loss on ignition: 3.5%; After granulating the green body powder through a spray tower, use a cloth feeding system for cloth feeding, and form a brick blank by roll pressing or stamping; Spray the alkaline filtrate on the surface of the green body; After 60 s, rinse with running water and dry at 210 °C for 65 min to obtain a pretreated brick blank;

[0080] (3) Apply a base glaze on the surface of the pretreated brick blank by spraying. The process parameters for applying the base glaze are: specific gravity is 1.89 g / mL, and the glaze application amount is 460 g / m 2 ; The raw materials of the base glaze include: by mass percentage, 43% potassium feldspar, 7% albite, 10% kaolin, 3% calcined kaolin, 12% quartz, 8% nepheline, 9% zirconia, 3% spodumene, 4% calcined talc; The chemical composition of the base glaze raw materials includes: by mass percentage, SiO2: 57%, Al2O3: 17.5%, Fe2O3: 0.4%, TiO2: 0.25%, CaO: 2.2%, MgO: 2.0%, K2O: 4.8%, Na2O: 2.5%, ZrO2: 9%, Li2O: 0.5%, loss on ignition: 3.3%;

[0081] (4) After applying the base glaze, use a digital inkjet printer to inkjet print patterns and a digital glue dry granulator to spray positioning glue on the surface of the base glaze;

[0082] (5) Use a dry granulator to apply crystal flower dry granulated glaze and use a recovery system to recover the excess crystal flower dry granulated glaze under negative pressure; The process parameters for applying the crystal flower dry granulated glaze are: specific gravity is 1.17 g / mL, and the glaze application amount is 280 g / m 2 ; Mix the crystal flower dry granulated glaze raw materials according to the ratio, calcine at a temperature of 1380 °C, water quench, and then process into 50-mesh dry granules; The crystal flower dry granulated glaze raw materials include, by mass percentage, 59% potassium feldspar, 5% albite, 12% quartz, 8% dolomite, 6% zinc oxide, 4% calcium carbonate, 2% talc; The chemical composition of the crystal flower dry granulated glaze raw materials includes: by mass percentage, SiO2: 56%, Al2O3: 14%, K2O: 6%, Na2O: 1.5%, CaO: 8%, MgO: 2.5%, ZnO: 6%, loss on ignition: 3.5%;

[0083] (6) Spray zircon sand;

[0084] (7) Finally, it is sent into a kiln for firing and polished by a full polishing process to obtain a positioned crystal granite slab. The firing temperature is 1190 °C and the firing cycle is 55 min.

[0085] Test example:

[0086] The test reference standard for the abrasion resistance of the glaze: GB / T 3810.7 - 2016; the results are shown in Table 1.

[0087] The test reference standard for the stain resistance of the glaze: GB / T 3810.14 - 2016; the results are shown in Table 1.

[0088] The test reference standard for the glossiness of the glaze: GB / T13891 - 2008; the results are shown in Table 1.

[0089] Table 1 Statistical results of the test for abrasion resistance, stain resistance and glossiness

[0090] Wear resistance Pollution resistance Glossiness of glazed surface after polishing Example 1 1500 revolutions, grade 3 Grade 4 95 degrees Example 2 1500 revolutions, grade 3 Grade 4 95 degrees Example 3 1500 revolutions, grade 3 Grade 4 94 degrees Example 4 1500 revolutions, grade 3 Grade 4 96 degrees Example 5 1500 revolutions, grade 3 Grade 4 95 degrees Example 6 1500 revolutions, grade 3 Grade 4 94 degrees

[0091] It can be found from the experimental data in Table 1 that the granite slab prepared by the present invention has good abrasion resistance, stain resistance and glossiness.

[0092] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claim.

Claims

1. A preparation method of a positioning crystalline granite slab, characterized in that, It includes the following steps: (1) Mix red mud and pure water at a mass ratio of 1:(9 - 10), soak at 80 - 90 °C for 60 - 70 min, and filter to obtain preliminarily de - alkalized red mud and alkaline filtrate; mix the preliminarily de - alkalized red mud, phosphogypsum, and pure water at a mass ratio of 1:(0.4 - 0.6):(50 - 60) for 30 - 40 min, and obtain mixture A after filtration, washing, and drying; (2) After granulating the green body powder through a spray tower, use a feeding system for feeding, and form a brick blank by roll - pressing or stamping; spray the alkaline filtrate on the surface of the green body, rinse with running water after 60 s, and dry at 180 - 220 °C for 60 - 70 min to obtain a pretreated brick blank; (3) Apply a base glaze to the surface of the pre-treated brick blank. The process parameters for applying the base glaze are as follows: specific gravity is 1.89 ± 0.02 g / mL, and the glaze application amount is 400 - 480 g / m 2 ; (4) After applying the base glaze, ink - jet print patterns and spray positioning glue on the surface of the base glaze; (5) Use a dry particle machine to apply crystal flower dry particle glaze and recycle the excess crystal flower dry particle glaze; the process parameters for applying the crystal flower dry particle glaze are: specific gravity 1.15 - 1.20 g / mL, glaze application amount 200 - 300 g / m 2 ; (6) Spray zircon sand; (7) Finally, send it into a kiln for firing and polish it using a full - polishing process to obtain a positioned crystal granite slab. The firing temperature is 1150 - 1200 °C, and the firing cycle is 40 - 60 min.

2. The preparation method according to claim 1, characterized in that, The red mud described in step (1) is produced by the Bayer process.

3. The preparation method according to claim 1, wherein The green body powder described in step (2) includes: by mass percentage, potassium feldspar 50% - 60%, mixture A 20% - 25%, talc 5% - 15%, wollastonite 3% - 6%, quartz 5% - 8%, kaolin 4% - 8%, dolomite 4% - 6%.

4. The preparation method according to claim 1, wherein The chemical composition of the green body powder described in step (2) includes: by mass percentage, SiO2: 65% - 68%, Al2O3: 17% - 19%, Fe2O3: 1.5% - 1.6%, TiO2: 0.1% - 0.2%, CaO: 2.2% - 2.5%, MgO: 1.5% - 1.8%, K2O: 3.0% - 3.2%, Na2O: 2.3% - 2.6%, P2O5: 0.1% - 0.3%, SO3: 0.1% - 0.3%, loss on ignition: 1.2% - 4.3%.

5. The preparation method according to claim 1, characterized in that, The base glaze raw materials described in step (3) include: by mass percentage, potassium feldspar 40% - 45%, albite 5% - 10%, kaolin 8% - 10%, calcined kaolin 3% - 5%, quartz 10% - 15%, nepheline 5% - 15%, zirconia 8% - 12%, spodumene 2% - 4%, calcined talc 4% - 6%.

6. The preparation method according to claim 1, characterized in that, The chemical composition of the base glaze raw materials described in step (3) includes: by mass percentage, SiO2: 55% - 60%, Al2O3: 16% - 18%, Fe2O3: 0.3% - 0.5%, TiO2: 0.2% - 0.3%, CaO: 1.5% - 2.5%, MgO: 1.5% - 2.5%, K2O: 4.0% - 5.0%, Na2O: 2.0% - 3.0%, ZrO2: 8% - 12%, Li2O: 0.3% - 0.5%, loss on ignition: 3.0% - 5.0%.

7. The preparation method according to claim 1, characterized in that The preparation method of the crystal flower dry granule glaze described in step (5) is as follows: Mix the raw materials of the crystal flower dry granule glaze according to the ratio, calcine at a temperature of 1300 - 1400 °C, perform water quenching, and then process them into dry granules with a mesh size of 30 - 100; the zircon sand has a particle size of 80 - 150 mesh, and the mass percentage of its main components is ZrO2≥65%, Fe2O3≤0.03%, TiO2≤0.

03.

8. The preparation method according to claim 7, characterized in that, The raw materials of the crystal flower dry granule glaze include, by mass percentage, 55% - 60% of potassium feldspar, 6% - 8% of albite, 12% - 15% of quartz, 6% - 8% of dolomite, 5% - 6% of zinc oxide, 4% - 5% of calcium carbonate, and 4% - 5% of talc.

9. The preparation method according to claim 7, characterized in that, The chemical composition of the raw materials of the crystal flower dry granule glaze includes, by mass percentage, SiO2: 55% - 60%, Al2O3: 14% - 16%, K2O: 6% - 7%, Na2O: 1.5% - 2.5%, CaO: 6% - 8%, MgO: 1.5% - 2.5%, ZnO: 5% - 6%, loss on ignition: 2% - 4%.

10. A positioning crystal flower rock slab prepared by the preparation method according to any one of claims 1 - 9.