Fast-fired silk dry granules and preparation method thereof, and ceramic tile and preparation method thereof

Abstract

The invention relates to the technical field of ceramic tiles, in particular to fast-fired silk dry granules and a preparation method thereof as well as a ceramic tile and a preparation method thereof. The invention relates to fast-fired silk dry granules, which are prepared from the following chemical components in percentage by mass: 39 to 47 percent of SiO2, 16 to 20 percent of Al2O3, 4.5 to 6 percent of K2O, 0.5 to 3 percent of Na2O, 8 to 10 percent of CaO, 2.5 to 4 percent of MgO, 7 to 13 percent of BaO, 8 to 12 percent of ZnO, 2 to 6 percent of SrO and 0.1 to 0.15 percent of Li2O. The fast-fired silk dry granules have the effects that the glaze surface is fine and smooth, and the silk texture is achieved, fast firing can be achieved, the production speed of ceramic tiles is effectively increased, and the effects of increasing the productivity of a production line and saving energy are achieved; the technical problems that at present, raw glaze and frit dry particles cannot be rapidly sintered at the same time, and the sintered glaze surface is smooth and fine are solved.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic tiles, and in particular to fast-burning silky dry particles and a preparation method thereof, a ceramic tile and a preparation method thereof. Background Art

[0002] In order to improve the texture of the surface of ceramic tiles, or to achieve the decorative effect of color and pattern, dry particles are currently applied on the surface of ceramic tile blanks. After high-temperature firing, the dry particles can form a better texture on the surface of ceramic tiles, improve the fineness and three-dimensional sense of the surface of ceramic tiles, and enrich the layering and fullness. At present, raw glaze is also used to increase the soft and delicate texture of the glaze of ceramic tiles, but the use of raw glaze and frit dry particles cannot achieve rapid firing, which makes the production speed of ceramic tiles slow when preparing silky and delicate glazes, the production line capacity is low, and the energy consumption is large. Summary of the invention

[0003] In response to the problems raised by the background technology, the purpose of the present invention is to propose a fast-firing silky dry granule, which not only has the effect of delicate glaze and silky texture, but also can achieve fast firing, effectively improve the production speed of ceramic tiles, achieve the effect of increasing production line capacity and saving energy, and solves the technical problem that the current raw glaze and frit dry granules cannot simultaneously achieve fast firing and silky and delicate glaze after firing.

[0004] Another object of the present invention is to provide a method for preparing the above-mentioned fast-fired silk dry particles. The preparation process is simple, and the fast-fired silk dry particles of corresponding particle size are obtained by ball-milling and sieving the melt, which can ensure a fine glaze effect.

[0005] Another object of the present invention is to provide a method for preparing ceramic tiles using the above-mentioned fast-firing silky dry particles, wherein the glaze sintering temperature is low, thereby achieving a fast-firing effect.

[0006] Another object of the present invention is to provide a ceramic tile prepared by the above-mentioned ceramic tile preparation method, which has a delicate glaze and a silky texture.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] The invention discloses a fast-burning silky dry granule, which comprises the following chemical composition calculated by mass percentage: 39-47% SiO2, 16-20% Al2O3, 4.5-6% K2O, 0.5-3% Na2O, 8-10% CaO, 2.5-4% MgO, 7-13% BaO, 8-12% ZnO, 2-6% SrO and 0.1-0.15% Li2O.

[0009] Further, the SiO2 is introduced by any one or more of potassium feldspar, quartz powder and lithium feldspar;

[0010] The Al2O3 is introduced from any one or more of potassium feldspar, alumina and lithium feldspar;

[0011] The K2O is introduced from potassium feldspar and / or lithium feldspar;

[0012] The Na2O is introduced from any one or more of potassium feldspar, lithium feldspar and sodium feldspar;

[0013] The CaO is introduced from dolomite and / or calcite;

[0014] The MgO is introduced from dolomite;

[0015] The BaO is introduced by barium carbonate;

[0016] The ZnO is introduced by calcined zinc oxide;

[0017] The SrO is introduced by strontium carbonate;

[0018] The Li2O is introduced from lithium feldspar.

[0019] A method for preparing fast-burning silky dry granules, used for preparing the fast-burning silky dry granules, comprises the following steps:

[0020] Step A1, preparing chemical composition raw materials according to the chemical composition of the quick-burning silky dry particles, and stirring them evenly to obtain a raw material mixture;

[0021] Step A2, melting the raw material mixture to obtain a melt;

[0022] Step A3, ball-milling the molten material and sieving it to obtain fast-burning silky dry particles.

[0023] To further illustrate, in step A2, the melting temperature is 1500-1600° C., and the melting time is 23-25 ​​hours.

[0024] To further illustrate, in step A3, the molten material is ball-milled through a 400-mesh sieve, and the residue is 0.

[0025] A method for preparing ceramic tiles, using the fast-burning silky dry particles, comprises the following steps:

[0026] Step B1, mixing the glue and the quick-burning silk dry particles evenly to obtain a dry particle slurry;

[0027] Step B2, applying the dry slurry to the surface of the ceramic tile;

[0028] Step B3, putting the ceramic tile blank into a kiln for firing, the firing time is 22 to 30 minutes, the firing temperature is 1160 to 1200° C., and a ceramic tile is obtained.

[0029] To further illustrate, in the step B1, the mixing mass ratio of the glue to the fast-burning silk dry particles is 100:(35-45).

[0030] A ceramic tile is prepared using the ceramic tile preparation method.

[0031] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0032] Since the chemical composition of the fast-firing silk dry particles contains relatively high contents of ZnO, K2O, CaO and MgO, when the fast-firing silk dry particles are melted at a high temperature, the contents of zinc, potassium, calcium and magnesium contained therein are relatively high, and a large amount of fluxing components zinc, potassium, calcium and magnesium in the frit form a low eutectic glass phase with the silicon and aluminum skeletons, which can effectively reduce the sintering temperature of the glaze surface, thereby achieving the purpose of fast firing. In addition, the formula structure of the fast-fired silky dry particles introduces components with zinc, calcium and barium as the main crystal phases. The glaze undergoes three stages of crystal nucleation, growth and expansion during the crystallization process, so that the glaze precipitates fine microcrystals during the rapid cooling stage after sintering, thereby achieving a delicate glaze surface with a silky and delicate feel. It can be quickly fired at a firing temperature of 1160-1200°C and a firing time of 22-30min, which greatly shortens the firing time. The ceramic tiles produced have both a delicate glaze and a silky texture and can be quickly fired, effectively increasing the production speed of ceramic tiles, thereby achieving the effect of increasing production line capacity and saving energy, and solving the technical problem that the current raw glaze and frit dry particles cannot simultaneously achieve fast firing and a silky and delicate glaze surface after firing. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a product picture of a ceramic tile made according to Application Example 1 of the present invention. DETAILED DESCRIPTION

[0034] The invention discloses a fast-burning silky dry granule, which comprises the following chemical composition calculated by mass percentage: 39-47% SiO2, 16-20% Al2O3, 4.5-6% K2O, 0.5-3% Na2O, 8-10% CaO, 2.5-4% MgO, 7-13% BaO, 8-12% ZnO, 2-6% SrO and 0.1-0.15% Li2O.

[0035] Since the chemical composition of the fast-firing silk dry particles contains relatively high contents of ZnO, K2O, CaO and MgO, when the fast-firing silk dry particles are melted at a high temperature, the contents of zinc, potassium, calcium and magnesium contained therein are relatively high, and a large amount of fluxing components zinc, potassium, calcium and magnesium in the frit form a low eutectic glass phase with the silicon and aluminum skeletons, which can effectively reduce the sintering temperature of the glaze surface, thereby achieving the purpose of fast firing. In addition, the formula structure of the fast-fired silky dry particles introduces components with zinc, calcium and barium as the main crystal phases. The glaze undergoes three stages of crystal nucleation, growth and expansion during the crystallization process, so that the glaze precipitates fine microcrystals during the rapid cooling stage after sintering, thereby achieving a delicate glaze surface with a silky and delicate feel. It can be quickly fired at a firing temperature of 1160-1200°C and a firing time of 22-30min, which greatly shortens the firing time. The ceramic tiles produced have both a delicate glaze and a silky texture and can be quickly fired, effectively increasing the production speed of ceramic tiles, thereby achieving the effect of increasing production line capacity and saving energy, and solving the technical problem that the current raw glaze and frit dry particles cannot simultaneously achieve fast firing and a silky and delicate glaze surface after firing.

[0036] Further, the SiO2 is introduced by any one or more of potassium feldspar, quartz powder and lithium feldspar;

[0037] The Al2O3 is introduced from any one or more of potassium feldspar, alumina and lithium feldspar;

[0038] The K2O is introduced from potassium feldspar and / or lithium feldspar;

[0039] The Na2O is introduced from any one or more of potassium feldspar, lithium feldspar and sodium feldspar;

[0040] The CaO is introduced from dolomite and / or calcite;

[0041] The MgO is introduced from dolomite;

[0042] The BaO is introduced by barium carbonate;

[0043] The ZnO is introduced by calcined zinc oxide;

[0044] The SrO is introduced by strontium carbonate;

[0045] The Li2O is introduced from lithium feldspar.

[0046] By selecting these raw materials as the raw materials for introducing chemical composition, the chemical composition of corresponding mass percentage can be introduced into the fast-burning silky dry particles.

[0047] A method for preparing fast-burning silky dry granules, used for preparing the fast-burning silky dry granules, comprises the following steps:

[0048] Step A1, preparing chemical composition raw materials according to the chemical composition of the quick-burning silky dry particles, and stirring them evenly to obtain a raw material mixture;

[0049] Step A2, melting the raw material mixture to obtain a melt;

[0050] Step A3, ball-milling the molten material and sieving it to obtain fast-burning silky dry particles.

[0051] The chemical composition raw materials are first prepared according to the chemical composition of the quick-fired silk dry particles, the quick-fired silk dry particles are obtained after being melted after being stirred evenly, and the quick-fired silk dry particles are obtained after being ball-milled and sieved. The preparation process is simple. The quick-fired silk dry particles of corresponding particle size are obtained by ball-milling and sieving the melt, which can ensure a delicate glaze effect.

[0052] To further illustrate, in step A2, the melting temperature is 1500-1600° C., and the melting time is 23-25 ​​hours.

[0053] The raw materials of the fast-fired silky dry particles melt and fuse with each other at high temperature to form a granular substance. The preferred melting temperature is 1500-1600° C. and the melting time is 23-25 ​​hours to ensure the melting effect of the raw materials, thereby ensuring the glaze quality of the fast-fired silky dry particles after being subsequently applied to the surface of the ceramic tile blank and fired.

[0054] Preferably, in step A3, the molten material is ball-milled through a 400-mesh sieve, and the residue on the sieve is 0.

[0055] The molten material is ball-milled and sieved, and the molten material is ball-milled through a 400-mesh sieve with a sieve residue of 0, thereby ensuring the fineness of the glaze surface after the quick-firing silk dry particles are subsequently applied to the surface of the ceramic tile blank and fired. If the quick-firing silk dry particles are too coarse, insufficient melting is likely to occur during the firing process of the ceramic tile, resulting in a rough glaze surface and poor fineness. If the quick-firing silk dry particles are too fine, the melting temperature of the glaze will be low, thereby resulting in a high glossiness of the glaze surface.

[0056] A method for preparing ceramic tiles, using the fast-burning silky dry particles, comprises the following steps:

[0057] Step B1, mixing the glue and the quick-burning silk dry particles evenly to obtain a dry particle slurry;

[0058] Step B2, applying the dry slurry to the surface of the ceramic tile;

[0059] Step B3, putting the ceramic tile blank into a kiln for firing, the firing time is 22 to 30 minutes, the firing temperature is 1160 to 1200° C., and a ceramic tile is obtained.

[0060] The dry particle slurry is obtained by uniformly mixing glue with the fast-firing silk dry particles, and the dry particle slurry is applied to the surface of the ceramic tile blank. After firing, a large amount of fluxing components of the fast-firing silk dry particles, such as zinc, potassium, calcium, magnesium, form a low eutectic glass phase with a silicon and aluminum skeleton, which can reduce the glaze sintering temperature and achieve a rapid firing effect. The firing time is 22 to 30 minutes at a firing temperature of 1160 to 1200°C, which is nearly 30 to 40 minutes shorter than the firing time of existing ceramic tiles using dry particles. In addition, since the formula structure of the fast-firing silk dry particles introduces components with zinc, calcium and barium as the main crystal phases, the glaze undergoes three stages of crystal nucleation, growth and enlargement during the crystallization process, so that the glaze precipitates fine microcrystals in the rapid cooling stage after sintering, thereby achieving a delicate effect on the glaze surface, and the glaze surface feels silky and delicate.

[0061] To further explain, the firing temperature in step B3 is 1160-1200°C. If the firing temperature is too low, the glaze surface fails to melt completely, resulting in an uneven glaze surface with poor fineness, strong diffuse reflection of light, a white glaze surface and poor visual effect. If the firing temperature is too high, the high-temperature viscosity of the glaze surface decreases, the fluidity increases, and the light transmittance of the glaze increases.

[0062] Furthermore, the surface of the ceramic tile blank can be decorated with patterns before the dry granular slurry is applied to the surface of the ceramic tile blank. In addition, after firing, the ceramic tile can be edge-grinded to improve the edge smoothness of the ceramic tile and thus improve the overall aesthetics.

[0063] To further illustrate, in the step B1, the mixing mass ratio of the glue to the fast-burning silk dry particles is 100:(35-45).

[0064] If the amount of the fast-fired silk dry particles added to the dry particle slurry is too much, the packing density of the fast-fired silk dry particles on the surface of the ceramic tile blank is too large, and insufficient melting is likely to occur, resulting in a rough glaze surface; if the amount of the fast-fired silk dry particles added to the dry particle slurry is too little, the packing density of the fast-fired silk dry particles on the surface of the ceramic tile blank is too small, the melting is too sufficient, and the glaze surface is bright.

[0065] Preferably, in the step B1, the mixing mass ratio of the glue to the fast-burning silk dry particles is 100:40.

[0066] A ceramic tile is prepared using the ceramic tile preparation method.

[0067] The ceramic tiles prepared by the ceramic tile preparation method have a delicate glaze and a silky texture.

[0068] In order to facilitate the understanding of the present invention, the present invention is described more fully below. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0069] If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the field or the product instructions are used. If no manufacturer is specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0070] Example 1

[0071] The invention discloses a fast-burning silky dry granule, which has the following chemical compositions calculated by weight percentage: 39% SiO2, 17.4% Al2O3, 5% K2O, 3% Na2O, 10% CaO, 2.5% MgO, 8% BaO, 9% ZnO, 6% SrO and 0.1% Li2O.

[0072] The above-mentioned fast-burning silky dry granules are prepared by the following preparation method:

[0073] Step A1, preparing chemical composition raw materials according to the chemical composition of the fast-burning silky dry particles (wherein Al2O3 is introduced from potassium feldspar and aluminum oxide; K2O is introduced from potassium feldspar; Na2O is introduced from sodium feldspar; CaO is introduced from dolomite and calcite; MgO is introduced from dolomite; BaO is introduced from barium carbonate; ZnO is introduced from calcined zinc oxide; SrO is introduced from strontium carbonate; Li2O is introduced from lithium feldspar), putting the raw materials into a mixer and stirring evenly to obtain a raw material mixture;

[0074] Step A2, the raw material mixture is loaded into a crucible, and then sent into a kiln for melting to obtain a molten material, the melting temperature is 1500° C., and the melting time is 25 hours;

[0075] Step A3, ball-milling the molten material, sieving it, and passing it through a 400-mesh sieve with a 0 residue to obtain fast-burning silky dry particles.

[0076] Example 2

[0077] The invention discloses a fast-burning silky dry granule, which has the following chemical compositions calculated by weight percentage: 47% SiO2, 16% Al2O3, 4.5% K2O, 0.5% Na2O, 8% CaO, 2.85% MgO, 7% BaO, 12% ZnO, 2% SrO and 0.15% Li2O.

[0078] The above-mentioned fast-burning silky dry granules are prepared by the following preparation method:

[0079] Step A1, preparing chemical composition raw materials according to the chemical composition of the fast-burning silky dry particles (wherein Al2O3 is introduced from potassium feldspar and aluminum oxide; K2O is introduced from potassium feldspar; Na2O is introduced from sodium feldspar; CaO is introduced from dolomite and calcite; MgO is introduced from dolomite; BaO is introduced from barium carbonate; ZnO is introduced from calcined zinc oxide; SrO is introduced from strontium carbonate; Li2O is introduced from lithium feldspar), putting the raw materials into a mixer and stirring evenly to obtain a raw material mixture;

[0080] Step A2, the raw material mixture is loaded into a crucible, and then sent into a kiln for melting to obtain a molten material, the melting temperature is 1500° C., and the melting time is 25 hours;

[0081] Step A3, ball-milling the molten material, sieving it, and passing it through a 400-mesh sieve with a sieve residue of 0 to obtain fast-burning silky dry particles.

[0082] Example 3

[0083] The invention discloses a fast-burning silky dry granule, which has the following chemical compositions calculated by weight percentage: 40% SiO2, 16% Al2O3, 6% K2O, 0.9% Na2O, 9% CaO, 4% MgO, 13% BaO, 8% ZnO, 3% SrO and 0.1% Li2O.

[0084] The above-mentioned fast-burning silky dry granules are prepared by the following preparation method:

[0085] Step A1, preparing chemical composition raw materials according to the chemical composition of the fast-burning silky dry particles (wherein Al2O3 is introduced from potassium feldspar and aluminum oxide; K2O is introduced from potassium feldspar; Na2O is introduced from sodium feldspar; CaO is introduced from dolomite and calcite; MgO is introduced from dolomite; BaO is introduced from barium carbonate; ZnO is introduced from calcined zinc oxide; SrO is introduced from strontium carbonate; Li2O is introduced from lithium feldspar), putting the raw materials into a mixer and stirring evenly to obtain a raw material mixture;

[0086] Step A2, the raw material mixture is loaded into a crucible, and then sent into a kiln for melting to obtain a molten material, the melting temperature is 1500° C., and the melting time is 25 hours;

[0087] Step A3, ball-milling the molten material, sieving it, and passing it through a 400-mesh sieve with a 0 residue to obtain fast-burning silky dry particles.

[0088] Example 4

[0089] The invention discloses a fast-burning silky dry granule, which has the following chemical compositions calculated by weight percentage: 39% SiO2, 20% Al2O3, 4.5% K2O, 2% Na2O, 9% CaO, 3.4% MgO, 10% BaO, 10% ZnO, 2% SrO and 0.1% Li2O.

[0090] The above-mentioned fast-burning silky dry granules are prepared by the following preparation method:

[0091] Step A1, preparing chemical composition raw materials according to the chemical composition of the fast-burning silky dry particles (wherein Al2O3 is introduced from potassium feldspar and aluminum oxide; K2O is introduced from potassium feldspar; Na2O is introduced from sodium feldspar; CaO is introduced from dolomite and calcite; MgO is introduced from dolomite; BaO is introduced from barium carbonate; ZnO is introduced from calcined zinc oxide; SrO is introduced from strontium carbonate; Li2O is introduced from lithium feldspar), putting the raw materials into a mixer and stirring evenly to obtain a raw material mixture;

[0092] Step A2, the raw material mixture is loaded into a crucible, and then sent into a kiln for melting to obtain a molten material, the melting temperature is 1500° C., and the melting time is 25 hours;

[0093] Step A3, ball-milling the molten material, sieving it, and passing it through a 400-mesh sieve with a 0 residue to obtain fast-burning silky dry particles.

[0094] Example 5

[0095] The invention discloses a fast-burning silky dry granule, which has the following chemical compositions calculated by weight percentage: 40% SiO2, 16% Al2O3, 6% K2O, 0.9% Na2O, 9% CaO, 4% MgO, 13% BaO, 8% ZnO, 3% SrO and 0.1% Li2O.

[0096] The above-mentioned fast-burning silky dry granules are prepared by the following preparation method:

[0097] Step A1, preparing chemical composition raw materials according to the chemical composition of the fast-burning silky dry particles (wherein Al2O3 is introduced from potassium feldspar and aluminum oxide; K2O is introduced from potassium feldspar; Na2O is introduced from sodium feldspar; CaO is introduced from dolomite and calcite; MgO is introduced from dolomite; BaO is introduced from barium carbonate; ZnO is introduced from calcined zinc oxide; SrO is introduced from strontium carbonate; Li2O is introduced from lithium feldspar), putting the raw materials into a mixer and stirring evenly to obtain a raw material mixture;

[0098] Step A2, the raw material mixture is loaded into a crucible, and then sent into a kiln for melting to obtain a molten material, the melting temperature is 1600° C., and the melting time is 23 hours;

[0099] Step A3, ball-milling the molten material, sieving it, and passing it through a 400-mesh sieve with a 0 residue to obtain fast-burning silky dry particles.

[0100] Application Examples 1 to 5

[0101] Application Example 1 uses the fast-burning silky dry granules prepared in Example 1, Application Example 2 uses the fast-burning silky dry granules prepared in Example 2, Application Example 3 uses the fast-burning silky dry granules prepared in Example 3, Application Example 4 uses the fast-burning silky dry granules prepared in Example 4, Application Example 5 uses the fast-burning silky dry granules prepared in Example 5, and ceramic tiles are prepared by the following method:

[0102] Step B1, mixing glue and fast-burning silk dry particles evenly to obtain dry particle slurry, wherein the mixing mass ratio of glue to fast-burning silk dry particles is 100:40;

[0103] Step B2, applying the dry slurry to the surface of the ceramic tile;

[0104] Step B3, putting the ceramic brick into a kiln for firing, the firing time is 30 minutes, the firing temperature is 1160° C., and a ceramic brick is obtained.

[0105] Application Example 6

[0106] The fast-burning silky dry particles prepared in Example 3 were used to prepare ceramic tiles using the following method:

[0107] Step B1, mixing glue and fast-burning silk dry particles evenly to obtain dry particle slurry, wherein the mixing mass ratio of glue to fast-burning silk dry particles is 100:40;

[0108] Step B2, applying the dry slurry to the surface of the ceramic tile;

[0109] Step B3, putting the ceramic brick into a kiln for firing, the firing time is 22 minutes, the firing temperature is 1200° C., and a ceramic brick is obtained.

[0110] It should be noted that the amount of dry slurry applied to the surface of the ceramic tile used in Application Examples 1 to 6 is the same.

[0111] The ceramic tiles prepared by using Examples 1 to 6 have a fine surface texture. When touched, the surface of the ceramic tiles has a silky texture, which can achieve the effects of fast firing and fine surface texture at the same time. Figure 1 The product picture of the ceramic tile obtained in Application Example 1 is shown. The static friction coefficient of the ceramic tiles obtained in Application Examples 1 to 6 was tested using the static friction coefficient determination method of ceramic tiles in Appendix M of GB / T4100-2015. The dry static friction coefficients all reached above 0.6, and the ceramic tiles had a fine surface and good anti-slip performance.

[0112] Application Comparative Example 1

[0113] The fast-burning silky dry particles prepared in Example 3 were used to prepare ceramic tiles using the following method:

[0114] Step B1, mixing glue and fast-burning silk dry particles evenly to obtain dry particle slurry, the mixing mass ratio of glue to fast-burning silk dry particles is 100:50, and the amount of dry particle slurry applied on the surface of the ceramic tile blank used in this comparative example is the same as the amount of dry particle slurry applied on the surface of the ceramic tile blank used in Example 6;

[0115] Step B2, applying the dry slurry to the surface of the ceramic tile;

[0116] Step B3, putting the ceramic brick into a kiln for firing, the firing time is 22 minutes, the firing temperature is 1200° C., and a ceramic brick is obtained.

[0117] Application Comparative Example 2

[0118] The fast-burning silky dry particles prepared in Example 3 were used to prepare ceramic tiles using the following method:

[0119] Step B1, mixing glue and fast-burning silk dry particles evenly to obtain dry particle slurry, the mixing mass ratio of glue to fast-burning silk dry particles is 100:30, and the amount of dry particle slurry applied on the surface of the ceramic tile blank used in this comparative example is the same as the amount of dry particle slurry applied on the surface of the ceramic tile blank used in Example 6;

[0120] Step B2, applying the dry slurry to the surface of the ceramic tile;

[0121] Step B3, putting the ceramic brick into a kiln for firing, the firing time is 22 minutes, the firing temperature is 1200° C., and a ceramic brick is obtained.

[0122] It should be noted that the amount of dry slurry applied on the surface of the ceramic tile blank in Application Comparative Example 1 and Application Comparative Example 2 is the same as that in Application Example 6.

[0123] Observe the ceramic tiles made by using comparative examples 1 and 2. Compared with the ceramic tiles made by using example 6, the glaze of the ceramic tiles made by using comparative example 1 is rougher. When touching the surface of the ceramic tiles, it is obvious that the surface has a rough texture. The surface of the ceramic tiles made by using comparative example 2 is too bright, and its surface texture is worse than that of using example 6.

[0124] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A fast-burning silky dry granule, characterized in that: Calculated by mass percentage, it includes the following chemical composition: 39-47% SiO2, 16-20% Al2O3, 4.5-6% K2O, 0.5-3% Na2O, 8-10% CaO, 2.5-4% MgO, 7-13% BaO, 8-12% ZnO, 2-6% SrO and 0.1-0.15% Li2O.

2. The fast-burning silky dry granules according to claim 1, characterized in that: The SiO2 is introduced by any one or more of potassium feldspar, quartz powder and lithium feldspar; The Al2O3 is introduced from any one or more of potassium feldspar, alumina and lithium feldspar; The K2O is introduced from potassium feldspar and / or lithium feldspar; The Na2O is introduced from any one or more of potassium feldspar, lithium feldspar and sodium feldspar; The CaO is introduced from dolomite and / or calcite; The MgO is introduced from dolomite; The BaO is introduced by barium carbonate; The ZnO is introduced by calcined zinc oxide; The SrO is introduced by strontium carbonate; The Li2O is introduced from lithium feldspar.

3. A method for preparing fast-burning silky dry granules, characterized in that: The method for preparing the fast-burning silky dry granules according to any one of claims 1 to 2 comprises the following steps: Step A1, preparing chemical composition raw materials according to the chemical composition of the quick-burning silky dry particles, and stirring them evenly to obtain a raw material mixture; Step A2, melting the raw material mixture to obtain a melt; Step A3, ball-milling the molten material and sieving it to obtain fast-burning silky dry particles.

4. The method for preparing fast-burning silky dry particles according to claim 3, characterized in that: In the step A2, the melting temperature is 1500-1600° C., and the melting time is 23-25 ​​hours.

5. The method for preparing fast-burning silky dry granules according to claim 3, characterized in that: In the step A3, the molten material is ball-milled through a 400-mesh sieve, and the residue is 0.

6. A method for preparing a ceramic tile, characterized in that: Using the fast-burning silky dry granules as described in any one of claims 1 to 2 comprises the following steps: Step B1, mixing the glue and the quick-burning silk dry particles evenly to obtain a dry particle slurry; Step B2, applying the dry slurry to the surface of the ceramic tile; Step B3, putting the ceramic tile blank into a kiln for firing, the firing time is 22 to 30 minutes, the firing temperature is 1160 to 1200° C., and a ceramic tile is obtained.

7. The method for preparing a ceramic tile according to claim 6, characterized in that: In the step B1, the mixing mass ratio of the glue to the fast-burning silk dry particles is 100:(35-45).

8. A ceramic tile, characterized in that: The ceramic tile is prepared using the method for preparing the ceramic tile as described in claim 6.

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