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CN-117567028-B - Frit, dry particles, preparation method of dry particles and flannel ceramic tile

CN117567028BCN 117567028 BCN117567028 BCN 117567028BCN-117567028-B

Abstract

The invention discloses a frit, dry particles, a preparation method of the dry particles and flannel ceramic tiles, and relates to the technical field of ceramics. The chemical composition of the frit is ：Al 2 O 3 17～20％、SiO 2 55～62％、CaO 5.0～5.5％、MgO 0.15～0.22％、K 2 O 4.8～5.2％、Na 2 O 6.5～7.0％、BaO 0.09～0.11％、ZnO 0.9～1.1％、Li 2 O 0.2～0.3％、F 0.08～0.1％、SrO 0.1～0.2％, percent by mass, and the balance is loss on ignition. Because the frit has special component proportion, has matte characteristic and higher melt viscosity, is not easy to level, and is prepared into spherical dry particles, the spherical dry particles can keep the spherical shape when the dry particles are sintered and melted, so that fine bulges can be formed on the surface of the ceramic tile, the bulges can increase diffuse reflection of light rays, improve the matte effect of the ceramic tile, and also have the effect of increasing color.

Inventors

  • YUAN HONGJIAN
  • LI YANPING
  • LIANG SHENGYUAN

Assignees

  • 广东能强陶瓷有限公司

Dates

Publication Date
20260505
Application Date
20231025

Claims (8)

  1. 1. A dry pellet, wherein the dry pellet is prepared from a frit, and the frit has a chemical composition of ：Al 2 O 3 17～20%、SiO 2 55～62%、CaO 5.0～5.5%、MgO 0.15～0.22%、K 2 O 4.8～5.2%、Na 2 O 6.5～7.0%、BaO 0.09～0.11%、ZnO 0.9～1.1%、Li 2 O 0.2～0.3%、F 0.08～0.1%、SrO 0.1～0.2%, and the balance of loss on ignition in mass percent; the dry particles are spherical or hemispherical powder particles, and the particle size of the dry particles is 40-60 mu m.
  2. 2. The method for preparing the dry granules according to claim 1, wherein the method comprises the steps of ball milling and sieving the prepared frit particles to obtain frit powder, ball milling and mixing the frit powder, the additive and water to obtain mixed slurry, and granulating the mixed slurry through a centrifugal spray drying tower to obtain the dry granules.
  3. 3. The method of claim 2, wherein the frit powder has a particle size of 6.5 μm or less.
  4. 4. The method of preparing dry pellets according to claim 2, wherein the additives include sodium hydroxymethyl cellulose and sodium tripolyphosphate.
  5. 5. The method for producing dry pellets according to claim 2, wherein the solid content in the mixed slurry is 45wt% to 55wt%.
  6. 6. The method for producing dry pellets according to claim 2, wherein the rotational speed of the spray head of the centrifugal spray drying tower is 12000 to 15000r/min during granulation.
  7. 7. The method for producing dry pellets according to claim 2, wherein the temperature in the centrifugal spray drying tower is 250 to 350 ℃.
  8. 8. A flannel tile, characterized in that the tile surface is provided with a dry grain layer, which is prepared from the dry grain according to claim 1.

Description

Frit, dry particles, preparation method of dry particles and flannel ceramic tile Technical Field The invention relates to the technical field of ceramics, in particular to a preparation method of frit, dry particles and flannel tiles. Background The higher the glossiness of the surface of the ceramic tile, the easier it is to handle, but the higher the brightness, the stronger the light reflection, and the uncomfortable feeling is given to people, so that the matte ceramic tile is more and more popular. The existing matte ceramic tile is polished to ensure that the glossiness is lower than 10 degrees, the reflective effect can not appear under the glossiness, the texture is better, and the anti-skid effect is good. However, the matt tile obtained by polishing to reduce gloss has a rough hand feeling, is easy to store dirt, is difficult to treat, does not have skin-friendly touch feeling, and is difficult to meet the requirements of consumers on touch feeling. It can be seen that there is a need for improvements and improvements in the art. Disclosure of Invention In view of the shortcomings of the prior art, the invention aims to provide a preparation method of frit, dry particles and flannel tiles, and aims to solve the defect that tiles with matte effect in the prior art do not have skin-friendly touch. In order to achieve the above purpose, the invention adopts the following technical scheme: the first aspect of the invention provides a frit, wherein the frit has a chemical composition of ：Al2O3 17～20％、SiO2 55～62％、CaO 5.0～5.5％、MgO 0.15～0.22％、K2O 4.8～5.2％、Na2O 6.5～7.0％、BaO 0.09～0.11％、ZnO 0.9～1.1％、Li2O 0.2～0.3％、F 0.08～0.1％、SrO 0.1～0.2％,% by mass and the balance of loss on ignition. In a second aspect, the present invention provides a dry particle, wherein the dry particle is prepared from the frit as described above, and the dry particle is a spherical or hemispherical powder particle. The particle size of the dry particles is 40-60 mu m. The third invention provides a preparation method of dry granules, which comprises the steps of taking frit particles, ball milling and sieving to obtain frit powder, taking the frit powder, additives and water, ball milling and mixing uniformly to obtain mixed slurry, and granulating the mixed slurry through a centrifugal spray drying tower to obtain the dry granules. In the preparation method of the dry granules, the particle size of the frit powder is less than or equal to 6.5 mu m. In the preparation method of the dry granules, the additive comprises sodium hydroxymethyl cellulose and sodium tripolyphosphate. In the preparation method of the dry particles, the solid content in the mixed slurry is 45-55wt%. In the preparation method of the dry granules, the rotating speed of the spray head of the centrifugal spray drying tower is 12000-15000 r/min during granulation. In the preparation method of the dry particles, the temperature in the centrifugal spray drying tower is 250-350 ℃. According to a fourth aspect of the invention, there is provided a flannel tile having a surface provided with a layer of dry particles prepared from dry particles as described above. The beneficial effects are that: The invention provides a frit, a dry particle, a preparation method thereof and a flannel ceramic tile, wherein the frit has a special component proportion, in particular to the content and the proportion of Al 2O3 and SiO 2, so that the frit has matte characteristic and higher melt viscosity and is not easy to level, the frit is used for preparing spherical dry particles, the spherical dry particle can keep the spherical shape when being sintered and melted, therefore, the ceramic tile with the dry particle layer can form tiny bulges on the surface of the ceramic tile, the bulges can increase diffuse reflection of light rays, improve the matte effect of the ceramic tile, and also have the effect of increasing color. Drawings Fig. 1 is a physical diagram of a flannel tile provided by the invention. Detailed Description The invention provides a frit, dry particles, a preparation method of the dry particles and flannel tiles, and further details of the invention are given in the following examples in order to make the purposes, technical schemes and effects of the invention clearer and more definite. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In a first aspect the invention provides a frit which may be used to prepare a dry particulate or as an overglaze frit, the frit having a chemical composition, in mass percent, ：Al2O3 17～20％、SiO2 55～62％、CaO 5.0～5.5％、MgO 0.15～0.22％、K2O 4.8～5.2％、Na2O 6.5～7.0％、BaO 0.09～0.11％、ZnO 0.9～1.1％、Li2O 0.2～0.3％、F 0.08～0.1％、SrO 0.1～0.2％, with the balance loss on ignition. The mass ratio of the alumina to the silicon dioxide in the frit is 1:3-1:4, and the frit is represented by a matte frit; the high viscosity can enable the dry parti