Ultra-white green body positioned crystal flower ceramic tile with large amount of lepidolite tailings and preparation method thereof

Abstract

The present invention belongs to the field of ceramic building materials, and specifically relates to an ultra-white body with a large content of lepidolite tailings and a preparation method thereof. The preparation method comprises the following steps: preparing an ultra-white body with a large content of lepidolite tailings; inkjet printing ink on the surface of the ultra-white body; applying an ultra-white top glaze with a large content of lepidolite tailings to the surface of the ultra-white body after the inkjet printing and ink removal; inkjet printing a normal ink pattern on the surface of the ultra-white body after the ultra-white top glaze is applied; applying a crystal polishing glaze with a large content of lepidolite tailings to the surface of the ultra-white body after the normal ink pattern is inkjet printed; and sintering and polishing the ultra-white body after the crystal polishing glaze is applied to obtain an ultra-white body with a large content of lepidolite tailings and crystal flower ceramic tiles.

Description

Technical Field

[0001] The invention belongs to the field of ceramic building materials, and particularly relates to an ultra-white green body positioned crystal flower ceramic tile with a large amount of lepidolite tailings added thereto and a preparation method thereof. Background Art

[0002] The lithium metal battery industry generates large quantities of lepidolite tailings during the lithium extraction process. This tailing is considered waste material for the lithium metal battery industry, and its large quantity and improper handling can cause significant environmental pollution. Currently, some building ceramics companies have proposed incorporating small amounts of lepidolite tailings into ceramic bodies. Because lepidolite tailings contain a low content of metallic lithium, their firing temperature is low, making them prone to foaming. Therefore, lepidolite tailings are commonly used to produce foamed ceramic tiles. Furthermore, the low aluminum content of lepidolite tailings makes it difficult to achieve a stable production formula for ceramic bodies containing large amounts of lepidolite tailings.

[0003] Chinese patent application number CN202211633476.X discloses a ceramic body, ceramic tile, and preparation method thereof. The main formulation comprises 30-65 parts of lepidolite tailings, 10-35 parts of wollastonite tailings, 10-30 parts of clay, 2-15 parts of potassium feldspar, 2-15 parts of albite, and 8-20 parts of quartz. Although this system utilizes a large amount of lepidolite tailings, the wollastonite formulation employed has a narrow firing range, poor production stability, and is prone to reversion, making it difficult to fully implement on architectural ceramic production lines. Summary of the Invention

[0004] In response to the above problems, the present invention provides an ultra-white body with positioned crystal flowers and a preparation method thereof, wherein a large amount of lepidolite tailings is introduced into the ceramic body formula to prepare a ceramic body with ultra-high whiteness, and the ultra-white glaze with a large amount of lepidolite tailings is also spread apart by inkjet printing to spread apart the ink, and the positioned crystal flowers obtained by combining the ordinary inkjet ink pattern and the crystallization effect formed according to the pattern texture can form a ceramic product with consistent appearance, strong three-dimensional sense and rich layers.

[0005] In a first aspect, the present invention provides a method for preparing a ceramic tile with an ultra-white body and positioned crystal flowers with a large content of lepidolite tailings. The preparation method comprises the following steps: preparing an ultra-white body with a large content of lepidolite tailings; inkjet printing ink on the surface of the ultra-white body; applying an ultra-white top glaze with a large content of lepidolite tailings to the surface of the ultra-white body after the inkjet printing and ink removal; inkjet printing a pattern of ordinary ink on the surface of the ultra-white body after the ultra-white top glaze has been applied; applying a crystallization polishing glaze with a large content of lepidolite tailings to the surface of the ultra-white body after the ordinary ink pattern has been inkjet printed; and sintering and polishing the ultra-white body after the crystallization polishing glaze has been applied to obtain an ultra-white ceramic tile with a large content of lepidolite tailings and positioned crystal flowers.

[0006] Preferably, the mineral composition of the ultra-white blank with a large amount of lithium mica tailings includes: in mass percentage, 20-45% lithium mica tailings, 8-20% ultra-white bentonite, 10-25% ultra-white ball clay, 10-30% ultra-white high-alumina sand, 2-20% sodium feldspar, 2-20% potassium feldspar, and 2-5% talc.

[0007] Preferably, the chemical composition of the ultra-white blank with a large amount of lithium mica tailings includes: in mass percentage, IL: 3.0~4.5%; SiO2: 67~70%; Al2O3: 17~20%; Fe2O3: 0.15~0.4%; TiO2: ≤0.3%; CaO: 0.4~0.8%; MgO: 0.6~1.2%; K2O: 2.5~3.5%; Na2O: 1.8~2.5%.

[0008] Preferably, the mineral composition of the ultra-white glaze with a large amount of lithium mica tailings includes: in terms of mass percentage, 30-50% lithium mica tailings, 3-15% albite, 5-15% ultra-white kaolin, 8-20% alumina, 8-18% calcined kaolin, 6-16% burned talc, 1-6% dolomite, 0.5-6% high white nepheline, and 6-10% zirconium silicate.

[0009] Preferably, the chemical composition of the ultra-white glaze with a large amount of lithium mica tailings includes: in mass percentage, IL: 1.5-3.5%; SiO2: 54-61%; Al2O3: 25-32%; Fe2O3: 0.1-0.25%; TiO2: ≤0.1%; CaO: 0.4-1.0%; MgO: 0.6-1.2%; K2O: 1.5-3.0%; Na2O: 2.5-4.0%; ZrO2: 3.5-5.5%.

[0010] Preferably, the ultra-white glaze with a large amount of lepidolite tailings is applied by spraying glaze; preferably, the specific gravity of the ultra-white glaze with a large amount of lepidolite tailings is 1.40-1.50 g / cm 3 , glaze application amount is 400~600g / m 2 .

[0011] Preferably, the mineral composition of the high-doped crystalline glaze of the lithium mica tailings includes, by mass percentage, 25-45% lithium mica tailings, 3-10% ultra-white kaolin, 5-10% burned talc, 8-15% calcite, 6-16% quartz, 25-40% zinc oxide, 5-13% titanium oxide, and 4-15% low-temperature frit; wherein the chemical composition of the low-temperature frit includes, by mass percentage, SiO2: 63-69%; Al2O3: 7-11%; Fe2O3: 0.1-0.5%; TiO2: 0.1-0.5%; CaO: 8-13%; MgO: 3-5%; K2O: 0.1-0.6%; Na2O: 8-12%.

[0012] Preferably, the mineral composition of the low-temperature frit includes, by mass percentage, quartz 5-15%, albite 40-70%, dolomite 5-15%, calcite 5-15%, and talc 10-20%.

[0013] Preferably, the chemical composition of the crystalline glaze with a large amount of lithium mica tailings includes: in mass percentage, IL: 7~9%; SiO2: 37~43%; Al2O3: 5~10%; Fe2O3: ≤0.25%; TiO2: 6~9%; CaO: 6~10%; MgO: 1.5~3%; K2O: 3.0~4.0%; Na2O: 1.0~2.5%; ZnO: 23~32%.

[0014] Preferably, the crystalline polishing glaze with a large amount of lithium mica tailings is applied by pouring glaze; preferably, the specific gravity of the crystalline polishing glaze with a large amount of lithium mica tailings is 1.83-1.88 g / cm 3 , glaze application amount is 450~550g / m 2 .

[0015] Preferably, the firing temperature is 1150-1200° C., and the firing period is 35-60 minutes.

[0016] In a second aspect, the present invention provides a ceramic tile with ultra-white green body and positioned crystal flowers with a large amount of lepidolite tailings added. The ceramic tile with ultra-white green body and positioned crystal flowers with a large amount of lepidolite tailings added is obtained according to the preparation method.

[0017] Beneficial effects

[0018] The present invention provides a ceramic tile with an ultra-white body and positioned crystal flowers made of a large amount of lepidolite tailings and a preparation method thereof. A ceramic body with ultra-high whiteness is prepared by introducing a large amount of lepidolite tailings into a ceramic body formula. In addition, the ultra-white surface glaze made of a large amount of lepidolite tailings is spread apart by inkjet printing to spread apart the ink. The obtained ceramic tile with positioned crystal flowers has both the rich colors of inkjet printing and the crystallization effect formed according to the pattern texture, and can form a ceramic product with consistent appearance, strong three-dimensional effect and rich layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The layout design (left) and brick surface effect diagram (right) of the ultra-white green body positioned crystal flower ceramic tile with a large amount of lithium mica tailings prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described by the following embodiments. It should be understood that the following embodiments are only used to illustrate the present invention, not to limit the present invention. The following is an exemplary description of the preparation method of the ultra-white green body positioning crystal flower ceramic tile with a large amount of lepidolite tailings of the present invention.

[0021] Preparation of ultra-white green bodies with a large content of lepidolite tailings. In order to solve the problem of large stocks of lepidolite tailings generated after extracting lepidolite in the metal lithium battery industry, the present invention designs a special formula for ultra-white green bodies with a large content of lepidolite tailings. The mineral composition of the ultra-white green bodies with a large content of lepidolite tailings includes: in mass percentage, 20-45% lepidolite tailings, 8-20% ultra-white bentonite, 10-25% ultra-white ball clay, 10-30% ultra-white high-alumina sand, 2-20% albite, 2-20% potassium feldspar, and 2-5% talc. The formula for ultra-white green bodies with a large content of lepidolite tailings described in the present invention can simultaneously meet the whiteness, strength, and brick shape requirements of the ultra-white green bodies.

[0022] Lepidolite tailings commonly used in the lithium battery industry can be used. For example, the chemical composition of the lepidolite tailings includes, by mass percentage, IL: 0.5-2%; SiO2: 70-80%; Al2O3: 10-15%; Fe2O3: 0.1-0.5%; TiO2: 0.01-0.1%; CaO: 0.1-1%; MgO: 0.01-0.1%; K2O: 2-4%; Na2O: 3-5%; and Li2O: 0.01-0.1%. As an example, the chemical composition of the lepidolite tailings used in the embodiments and comparative examples includes, by mass percentage, IL: 0.81%; SiO2: 77.91%; Al2O3: 13.30%; Fe2O3: 0.12%; TiO2: 0.05%; CaO: 0.50%; MgO: 0.04%; K2O: 2.94%; Na2O: 4.28%; and Li2O: 0.05%.

[0023] According to the mineral composition of the ultra-white blank with a large amount of lepidolite tailings, each raw material is weighed, and after adding water and ball-milling evenly, powder spraying and granulation are performed to obtain a blank powder. As an example, an organic reinforcing agent can also be added to further improve the strength of the blank. For example, the organic reinforcing agent accounts for 0.2 to 1.0% of the total mass of the mineral composition of the ultra-white blank with a large amount of lepidolite tailings. The blank powder is molded to obtain an ultra-white blank with a large amount of lepidolite tailings. The molding method includes but is not limited to extrusion molding and / or press molding. In some embodiments, the whiteness of the ultra-white blank with a large amount of lepidolite tailings can be 58 to 60 degrees.

[0024] In some embodiments, the chemical composition of the ultra-white blank with a large amount of lithium mica tailings includes: in mass percentage, IL: 3.0~4.5%; SiO2: 67~70%; Al2O3: 17~20%; Fe2O3: 0.15~0.4%; TiO2: ≤0.3% (for example, 0.01~0.3%); CaO: 0.4~0.8%; MgO: 0.6~1.2%; K2O: 2.5~3.5%; Na2O: 1.8~2.5%.

[0025] The ultra-white green bricks containing a high content of lepidolite tailings are dried. After drying, the bricks can be polished. This produces a green brick with a dense, smooth surface. The brick temperature can be controlled between 35°C and 50°C. As an example, the strength of the dried bricks is 2.2 to 2.5 MPa.

[0026] The prying ink is inkjet printed on the surface of an ultra-white blank containing a large amount of lepidolite tailings. The composition of the prying ink is not the novelty of the present invention. Commercial prying inks can be used. For example, Fulu brand prying ink is used in the Examples and Comparative Examples. The prying ink can be inkjet printed according to the layout design.

[0027] An ultra-white glaze with a high content of lepidolite tailings is applied to the surface of an ultra-white body after the ink is removed by inkjet printing. The ultra-white glaze is spread out at the location where the ink is removed by inkjet printing, thereby forming a line texture with a concave and convex three-dimensional effect. The mineral composition of the ultra-white glaze with a high content of lepidolite tailings includes, by mass percentage, 30-50% lepidolite tailings, 3-15% albite, 5-15% ultra-white kaolin, 8-20% alumina, 8-18% calcined kaolin, 6-16% burned talc, 1-6% dolomite, 0.5-6% high white nepheline, and 6-10% zirconium silicate.

[0028] In some embodiments, the chemical composition of the ultra-white glaze with a large amount of lithium mica tailings includes: in mass percentage, IL: 1.5~3.5%; SiO2: 54~61%; Al2O3: 25~32%; Fe2O3: 0.1~0.25%; TiO2: ≤0.1% (for example, 0.01~0.1%); CaO: 0.4~1.0%; MgO: 0.6~1.2%; K2O: 1.5~3.0%; Na2O: 2.5~4.0%; ZrSiO4: 3.5~5.5%.

[0029] The ultra-white glaze with a large amount of lepidolite tailings can be applied by spraying. In some embodiments, the specific gravity of the ultra-white glaze with a large amount of lepidolite tailings is 1.40-1.50 g / cm 3 , glaze application amount is 400~600g / m 2 . If the amount of ultra-white glaze with a large amount of lithium mica tailings applied is too low, it will result in the inability to cover the base color and defects of the blank, resulting in a dark base color, blurred pattern layering effect, and poor combination of crystal flowers and pattern textures. If the amount of ultra-white glaze with a large amount of lithium mica tailings applied is too high, it will result in a high moisture content in the blank, difficulty in drainage during firing, easy brick blasting, and not conducive to production. When preparing the glaze slurry of ultra-white glaze with a large amount of lithium mica tailings, additives and water can be added to the mineral composition of the ultra-white glaze with a large amount of lithium mica tailings, ball milling can be carried out evenly, and sieving can be used to obtain the glaze slurry. The additives include but are not limited to sodium carboxymethyl cellulose and sodium tripolyphosphate. The sieve residue of the glaze slurry passing through a 325 mesh sieve can be within 0.5wt%. When used, water can be added to the glaze slurry to obtain the final required glaze slurry specific gravity.

[0030] After applying the ultra-white top glaze, a regular ink pattern is printed on the surface of the ultra-white blank. The texture and color of the inkjet printed regular ink pattern can be adjusted according to the layout design.

[0031] A crystallized glaze with a large amount of lithium mica tailings is applied on the surface of the ultra-white blank after the ordinary ink pattern is inkjet printed.

[0032] The mineral composition of the crystallization glaze with a large amount of lithium mica tailings includes: in terms of mass percentage, 25-45% lithium mica tailings, 3-10% ultra-white kaolin, 5-10% burned talc, 8-15% calcite, 6-16% quartz, 25-40% zinc oxide, 5-13% titanium oxide, and 4-15% low-temperature frit. The function of the low-temperature frit is to lower the temperature of the crystallization glaze and promote the formation of crystal nuclei. If the low-temperature frit is omitted in the crystallization glaze, it will lead to poor crystallization effect and smaller crystal flowers. Moreover, the lithium mica tailings contain a small amount of lithium, which is conducive to lowering the initial melting temperature of the crystallization glaze and promoting the formation of crystals.

[0033] The chemical composition of the low-temperature frit includes, by mass percentage, SiO2: 63-69%; Al2O3: 7-11%; Fe2O3: 0.1-0.5%; TiO2: 0.1-0.5%; CaO: 8-13%; MgO: 3-5%; K2O: 0.1-0.6%; and Na2O: 8-12%.

[0034] As an example, the mineral composition of the low-temperature frit includes, by mass percentage, quartz 5-15%, albite 40-70%, dolomite 5-15%, calcite 5-15%, and talc 10-20%. The raw materials are weighed according to the mineral composition of the low-temperature frit, mixed uniformly, melted at 1550-1580°C for 12-14 hours, and then water quenched and crushed to obtain the low-temperature frit.

[0035] In some embodiments, the chemical composition of the crystalline glaze with a large amount of lithium mica tailings includes: in mass percentage, IL: 7~9%; SiO2: 37~43%; Al2O3: 5~10%; Fe2O3: ≤0.25% (preferably 0.01~0.25%); TiO2: 6~9%; CaO: 6~10%; MgO: 1.5~3%; K2O: 3.0~4.0%; Na2O: 1.0~2.5%; ZnO: 23~32%.

[0036] The crystalline glaze with a large amount of lepidolite tailings can be applied by pouring glaze. In some embodiments, the specific gravity of the crystalline glaze with a large amount of lepidolite tailings is 1.83 to 1.88 g / cm 3 , glaze application amount is 450~550g / m 2 . If the amount of the crystallized polished glaze with a large amount of lithium mica tailings applied is too low, it will result in the inability to form crystal flowers or the crystal flowers being small in size. If the amount of the crystallized polished glaze with a large amount of lithium mica tailings applied is too high, it will result in poor glaze transparency, poor air exhaust, and many pores. When preparing the glaze slurry for the crystallized polished glaze with a large amount of lithium mica tailings, additives and water can be added to the mineral composition of the crystallized polished glaze with a large amount of lithium mica tailings, ball milled evenly, and sieved to obtain the crystallized polished glaze slurry. The additives include but are not limited to sodium carboxymethyl cellulose and sodium tripolyphosphate. The residue of the crystallized polished glaze slurry passing through a 325 mesh sieve can be within 0.5wt%. When in use, water can be added to the crystallized polished glaze slurry to obtain the final required glaze slurry specific gravity.

[0037] The green body, after being glazed with a large amount of lepidolite tailings, is fired and polished to form a ceramic tile with a crystallized effect. In some embodiments, the firing temperature is 1150-1200°C, and the firing cycle is 35-60 minutes. For example, the firing temperature is 1160-1170°C, and the firing cycle is 45-50 minutes.

[0038] In summary, the present invention introduces a large amount of lithium mica tailings into the ceramic formula and glaze formula to solve the problem of tailing treatment generated after lithium mica is extracted in the lithium battery industry, improves the whiteness of the ceramic body, and after inkjet printing, the ultra-white surface glaze is positioned and removed, combined with inkjet pattern and crystallized glaze, and the obtained ceramic tile glaze has good transparency, with both rich pattern decoration of inkjet printing and positioning crystallization effect of matching pattern texture (positioned crystallization means that the surface glaze is removed at the position where the ink is removed by inkjet printing, so that the crystallized glaze layer at the position where the ink is removed is thicker, which is more conducive to crystallization). The water absorption rate of the ultra-white body positioning crystal flower ceramic tile with a large amount of lithium mica tailings can be controlled within 0.5wt%.

[0039] The following examples are further listed to illustrate the present invention in detail. It should also be understood that the following examples are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the art based on the above content of the present invention all fall within the scope of protection of the present invention. The specific process parameters and the like in the following examples are only examples within a suitable range, that is, those skilled in the art can make selections within a suitable range through the description herein, and are not limited to the specific numerical values ​​exemplified below.

[0040] Example 1

[0041] The preparation method of ultra-white green body positioned crystal flower ceramic tiles with a large amount of lepidolite tailings comprises the following steps:

[0042] Step 1. Prepare an ultra-white green body with a large amount of lepidolite tailings. The mineral composition of the ultra-white green body with a large amount of lepidolite tailings includes, by mass percentage, lepidolite tailings 35%, ultra-white bentonite 14%, ultra-white ball clay 18%, ultra-white high-alumina sand 15%, albite 10%, potash feldspar 4%, and talc 4%. The chemical composition of the ultra-white green body with a large amount of lepidolite tailings includes, by mass percentage, IL: 4.07%; SiO2: 69.85%; Al2O3: 18.65%; Fe2O3: 0.2%; TiO2: 0.12%; CaO: 0.66%; MgO: 0.95%; K2O: 3.25%; and Na2O: 2.25%.

[0043] Step 2: inkjet printing is performed on the surface of the ultra-white body with a large amount of lepidolite tailings according to the pattern design to spread the ink.

[0044] Step 3. Apply a high-volume ultra-white glaze containing lepidolite tailings to the surface of the ultra-white blank after the ink is removed by inkjet printing. The mineral composition of the ultra-white glaze containing a high-volume ultra-white glaze includes, by mass percentage, lepidolite tailings 40%, albite 10%, ultra-white kaolin 8%, alumina 13%, calcined kaolin 8%, burned talc 8%, dolomite 2%, high white nepheline 3%, and zirconium silicate 8%. The chemical composition of the ultra-white glaze containing a high-volume ultra-white glaze includes, by mass percentage, IL: 2.0%; SiO2: 55.5%; Al2O3: 29.2%; Fe2O3: 0.12%; TiO2: 0.08%; CaO: 0.75%; MgO: 1.05%; K2O: 2.8%; Na2O: 3.7%; and ZrO2: 4.8%. The application method of the ultra-white glaze with a large amount of lepidolite tailings is spray glaze. The specific gravity of the ultra-white glaze with a large amount of lepidolite tailings is 1.40g / cm 3 , glaze amount is 500g / m 2 .

[0045] Step 4. inkjet printing a pattern of ordinary ink on the surface of the ultra-white body after applying the ultra-white glaze with a large amount of lithium mica tailings.

[0046] Step 5. Apply a high-volume crystalline glaze made of lepidolite tailings to the surface of the blank after the inkjet printing of the ordinary ink pattern. The mineral composition of the high-volume crystalline glaze made of lepidolite tailings includes, by mass percentage, lepidolite tailings 28%, ultra-white kaolin 4%, calcined talc 6%, calcite 12%, quartz 6%, zinc oxide 30%, titanium oxide 9%, and low-temperature frit 5%. The chemical composition of the low-temperature frit includes, by mass percentage, IL: SiO2: 66.76%; Al2O3: 7.84%; Fe2O3: 0.42%; TiO2: 0.13%; CaO: 10.48%; MgO: 3.84%; K2O: 0.47%; and Na2O: 10.06%. The chemical composition of the crystalline glaze with a large amount of lithium mica tailings includes: in terms of mass percentage, IL: 7.28%; SiO2: 40.59%; Al2O3: 6.14%; Fe2O3: 0.15%; TiO2: 7.70%; CaO: 6.28%; MgO: 1.88%; K2O: 3.23%; Na2O: 1.38%; ZnO: 25.37%. The crystalline glaze with a large amount of lithium mica tailings is applied by pouring. The specific gravity of the crystalline glaze with a large amount of lithium mica tailings is 1.88g / cm 3 , the application amount is 550g / m 2 .

[0047] Step 6. The green body with the crystallized glaze containing a large amount of lepidolite tailings is fired and polished to form a crystallized, ultra-white green body with a large amount of lepidolite tailings. The firing temperature is 1170° C. and the firing cycle is 50 minutes.

[0048] from Figure 1 It can be seen that the surface of the ultra-white green body positioned crystal flower ceramic tile product with a large amount of lepidolite tailings prepared in this embodiment has a crystal flower effect consistent with the layout design.

[0049] Comparative Example 1

[0050] The invention is substantially the same as Example 1, except that the ultra-white green body containing a large amount of lepidolite tailings is replaced with a wollastonite green body. The mineral composition of the wollastonite green body comprises, by mass percentage, 30% lepidolite tailings, 15% ultra-white bentonite, 18% ultra-white ball clay, 10% quartz, 4% albite, 8% potassium feldspar, and 15% wollastonite.

[0051] During the production process, it was found that the comparative example 1 used a wollastonite-based body, which had unstable water absorption and was prone to reversion (ie, secondary deformation leading to deterioration of the brick shape), ultimately causing unstable brick shape.

[0052] Comparative Example 2

[0053] The invention is substantially the same as Example 1, except that the ultra-white glaze with a high content of lepidolite tailings is replaced with an ultra-white glaze with a low content of lepidolite tailings. The mineral composition of the ultra-white glaze with a low content of lepidolite tailings comprises, by mass percentage, 5% lepidolite tailings, 19% albite, 20% potassium feldspar, 5% quartz, 2% wollastonite, 8% ultra-white kaolin, 12% alumina, 10% calcined kaolin, 7% burned talc, 1% dolomite, 3% high white nepheline, and 8% zirconium silicate.

[0054] The formula of the ultra-white glaze with low content of lithium mica tailings in comparative example 2 does not match that of the ultra-white body with high content of lithium mica tailings, resulting in excessive differences in initial melting temperature and expansion properties, causing the brick body to distort and resulting in large brick shape deviation.

[0055] Comparative Example 3

[0056] The invention is substantially the same as Example 1, except that the crystalline glaze with a large amount of lepidolite tailings is replaced with a conventional glaze with a large amount of lepidolite tailings. The mineral composition of the conventional glaze with a large amount of lepidolite tailings includes, by mass percentage, lepidolite tailings 30%, ultra-white kaolin 4%, burned talc 8%, calcite 10%, quartz 14%, zinc oxide 3%, strontium carbonate 7%, potassium feldspar 10%, and sodium feldspar 14%.

[0057] The glaze of Comparative Example 3 has no crystallization effect and the glaze surface quality is poor, and defects such as holes are easily present.

[0058] Comparative Example 4

[0059] The invention is substantially the same as Example 1, except that the ultra-white glaze containing a large amount of lepidolite tailings is replaced with a glaze with a flowered glaze. The glaze has a mineral composition comprising, by mass percentage, 30% potassium feldspar, 20% sodium feldspar, 8.5% quartz, 8% kaolin, 3% burned talc, 27% lepidolite tailings, and 3.5% nano-colorant.

[0060] Comparative Example 4 uses a seepage glaze. Since the seepage glaze diffuses unevenly in the brick, the seepage depth is difficult to control, thereby affecting the pattern clarity and reducing the pattern texture level.

Claims

1. A method for preparing ultra-white green body positioned crystal flower ceramic tiles with a large amount of lepidolite tailings, characterized in that: The preparation method comprises the following steps: Preparation of an ultra-white green body with a large amount of lepidolite tailings; the mineral composition of the ultra-white green body with a large amount of lepidolite tailings comprises, by mass percentage, 20-45% lepidolite tailings, 8-20% ultra-white bentonite, 10-25% ultra-white ball clay, 10-30% ultra-white high-alumina sand, 2-20% albite, 2-20% potassium feldspar, and 2-5% talc; inkjet printing on the surface of the ultra-white blank with a large amount of lepidolite tailings to remove ink; Applying a lepidolite tailings high-content ultra-white glaze on the surface of the ultra-white green body after the ink is removed by inkjet printing; the mineral composition of the lepidolite tailings high-content ultra-white glaze includes: in percentage by mass, lepidolite tailings 30-50%, albite 3-15%, ultra-white kaolin 5-15%, alumina 8-20%, calcined kaolin 8-18%, burned talc 6-16%, dolomite 1-6%, high white nepheline 0.5-6%, and zirconium silicate 6-10%; inkjet printing a common ink pattern on the surface of the ultra-white body with a large amount of lepidolite tailings added to the glaze; Applying a crystalline glaze with a large amount of lepidolite tailings on the surface of the ultra-white green body after the inkjet printing of the ordinary ink pattern; the mineral composition of the crystalline glaze with a large amount of lepidolite tailings includes: in terms of mass percentage, 25-45% of lepidolite tailings, 3-10% of ultra-white kaolin, 5-10% of burned talc, 8-15% of calcite, 6-16% of quartz, 25-40% of zinc oxide, 5-13% of titanium oxide, and 4-15% of low-temperature frit; The ultra-white body with a large amount of lepidolite tailings added to the lepidolite tailings crystal glaze is fired and polished to obtain the ultra-white body with a large amount of lepidolite tailings added to the lepidolite tailings positioned crystal flower ceramic tile.

2. The preparation method according to claim 1, characterized in that The chemical composition of the ultra-white blank with a large amount of lepidolite tailings includes, by mass percentage, IL: 3.0-4.5%; SiO2: 67-70%; Al2O3: 17-20%; Fe2O3: 0.15-0.4%; TiO2: ≤0.3%; CaO: 0.4-0.8%; MgO: 0.6-1.2%; K2O: 2.5-3.5%; and Na2O: 1.8-2.5%.

3. The preparation method according to claim 1, characterized in that The chemical composition of the ultra-white glaze with a large amount of lepidolite tailings includes, by mass percentage, IL: 1.5-3.5%; SiO2: 54-61%; Al2O3: 25-32%; Fe2O3: 0.1-0.25%; TiO2: ≤0.1%; CaO: 0.4-1.0%; MgO: 0.6-1.2%; K2O: 1.5-3.0%; Na2O: 2.5-4.0%; and ZrO2: 3.5-5.5%.

4. The preparation method according to claim 1, wherein The ultra-white glaze with a large amount of lepidolite tailings is applied by spraying; the specific gravity of the ultra-white glaze with a large amount of lepidolite tailings is 1.40-1.50 g / cm 3 , glaze application amount is 400~600 g / m 2 .

5. The preparation method according to claim 1, characterized in that The chemical composition of the low-temperature frit includes, by mass percentage, SiO2: 63-69%; Al2O3: 7-11%; Fe2O3: 0.1-0.5%; TiO2: 0.1-0.5%; CaO: 8-13%; MgO: 3-5%; K2O: 0.1-0.6%; and Na2O: 8-12%.

6. The preparation method according to claim 5, characterized in that The mineral composition of the low-temperature frit includes, by mass percentage, quartz 5-15%, albite 40-70%, dolomite 5-15%, calcite 5-15%, and talc 10-20%.

7. The preparation method according to claim 1, characterized in that The chemical composition of the crystalline glaze with a large amount of lithium mica tailings includes, in percentage by mass, IL: 7-9%; SiO2: 37-43%; Al2O3: 5-10%; Fe2O3: ≤0.25%; TiO2: 6-9%; CaO: 6-10%; MgO: 1.5-3%; K2O: 3.0-4.0%; Na2O: 1.0-2.5%; and ZnO: 23-32%.

8. The preparation method according to claim 1, wherein The crystalline polishing glaze with a large amount of lithium mica tailings is applied by pouring glaze; the specific gravity of the crystalline polishing glaze with a large amount of lithium mica tailings is 1.83~1.88 g / cm 3 , glaze application amount is 450~550 g / m 2 .

9. The preparation method according to claim 1, characterized in that The firing temperature is 1150~1200℃, and the firing cycle is 35~60 minutes.

10. A super white green body positioned crystal flower ceramic tile with a large amount of lepidolite tailings, characterized in that: The ultra-white green body positioned crystal flower ceramic tile with a large amount of lepidolite tailings is obtained by the preparation method according to any one of claims 1 to 9.

Images