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CN-118373708-B - Production process of glaze material with starlight effect after firing and ceramic tile

CN118373708BCN 118373708 BCN118373708 BCN 118373708BCN-118373708-B

Abstract

The invention discloses a glaze with starlight effect after firing and a production process of ceramic bricks, which mainly relate to the field of glaze, and comprise basic glaze and starlight particles which can show starlight effect under the irradiation of a light source after firing, wherein the starlight particles with the mass ratio of more than 2.5% are added to the basic glaze and are uniformly mixed to obtain the glaze, and the starlight particles are frit particles obtained by melting, water quenching, crushing and screening raw materials, and the sintered glaze has punctiform starlight effect without polishing. By matching the starlight particles with specific chemical compositions, the particle size distribution and the mass ratio, the invention further improves the leveling effect and the pollution resistance of the glaze, and solves the technical problems of potholes and poor pollution resistance of the glaze proposed by the background technology. And the preparation method of the further scheme obtains the ceramic tile with the water absorption of 0.5-3% after limiting a specific firing system, is particularly suitable for being paved on a wall surface, and can reflect the unique punctiform starlight effect of the star points by matching with the side irradiation of lamplight.

Inventors

  • WANG YANJUN
  • WU BIN
  • WANG GANG
  • HONG WENHAI
  • MA JI
  • YU LINGBO
  • XU GUANGGUI

Assignees

  • 景德镇金意陶陶瓷有限公司
  • 广东金意陶陶瓷集团有限公司
  • 佛山市三水金意陶陶瓷有限公司

Dates

Publication Date
20260512
Application Date
20240419

Claims (8)

  1. 1. The glaze with starlight effect after firing is characterized by comprising base glaze and starlight particles which can show starlight effect under the irradiation of a light source after firing, wherein the starlight particles are added into the base glaze in an externally added mode, the two are uniformly mixed to obtain the glaze with starlight effect after firing, The starlight particles are frit particles obtained by melting, water quenching, crushing and screening raw materials, the mass of the starlight particles is more than or equal to 2.5% of the mass of the basic glaze, and the chemical composition of the starlight particles comprises ：SiO 2 64.5-66.5%,Al 2 O 3 17.5-19.0%,Fe 2 O 3 0-0.2%,TiO 2 0-0.1%,CaO 6.0-7.5%,MgO 0.5-1.5%,K 2 O 3.5-5.5%,Na 2 O 5.5-7.5% and 0-1% of ZnO according to mass percentage; The particle size distribution of the starlight particles is that the starlight particles are in the range of <63 microns, 8-10wt%, 63-150 microns, 63-67wt%, 150-200 microns, 23-27wt%, and >200 microns, 0-0.05wt%, the starlight particles account for 2.5-5% of the mass of the base glaze, and the chemical composition of the base glaze comprises ：SiO 2 45-50%,Al 2 O 3 17-22%,Fe 2 O 3 0.1-0.5%,TiO 2 0.1-0.5%,CaO 4-6%,MgO 3-5%,K 2 O 2.5-3.5%,Na 2 O 0.8-2.0%,ZnO 2-4 % , BaO 10-16% and SrO 1-3% according to mass percentage.
  2. 2. The glaze with starlight effect after firing according to claim 1, wherein the raw materials of the base glaze comprise, by mass, 10-30 parts of matte frit, 8-13 parts of kaolin, 20-40 parts of potassium feldspar, 5-10 parts of albite, 3-10 parts of barium carbonate, 2-5 parts of alumina, 2-5 parts of talcum, 5-15 parts of limestone, 5-15 parts of ultrafine quartz and 4-8 parts of dolomite; The matte frit comprises, by weight, 5-10 parts of limestone, 3-10 parts of barium carbonate, 35-45 parts of potassium feldspar, 7-10 parts of zinc oxide, 12-15 parts of kaolin, 8-10 parts of superfine quartz, 2-6 parts of strontium carbonate and 2-4 parts of dolomite, wherein the superfine quartz is quartz powder screened by a 325-mesh screen.
  3. 3. A process for producing a ceramic tile having a starlight effect, comprising the step of applying a glaze having a starlight effect after firing according to any one of claims 1 to 2 to the surface of a green body.
  4. 4. A process for producing a ceramic tile with starlight effect as claimed in claim 3, comprising the steps of: S1) printing on the surface of a green brick to form a green brick with decorative patterns; S2) spreading the glaze with starlight effect on the surface of the green brick with the decorative pattern; S3) sintering in a kiln; s4) taking the green bricks out of the kiln, and edging to obtain the ceramic bricks with starlight effect.
  5. 5. The process for producing ceramic tiles with starlight effect according to claim 4, wherein the firing schedule is 35-45 minutes, the front temperature zone is 420-1013 ℃ of surface temperature, 448-972 ℃ of bottom temperature, the middle temperature zone is 1002-1120 ℃ of surface temperature, 1035-1100 ℃ of bottom temperature, and the high temperature zone is 1130-1135 ℃ of surface temperature and 1130-1134 ℃ of bottom temperature.
  6. 6. A process for producing ceramic tiles with starlight effects according to any one of claims 3 or 5 wherein the green body chemical composition comprises ：SiO 2 68.43%,Al 2 O 3 17.55%,Fe 2 O 3 1.75%,TiO 2 0.37%,CaO 1.24%,MgO 0.98%,K 2 O 2.81%,Na 2 O 1.84% and l.o.i. 5.03% by mass.
  7. 7. The process for producing a ceramic tile with starlight effect according to claim 6, wherein in step S4), the thickness of the ceramic tile with starlight effect is 7.8mm or less.
  8. 8. A process for producing ceramic tiles with starlight effect as claimed in claim 3 wherein, prior to step S1), a layer of primer is applied to the surface of the green body, the primer having a chemical composition comprising ：SiO 2 62-70%,Al 2 O 3 17-19.5%,Fe 2 O 3 0.13-0.49%,TiO 2 0.02-0.08%,CaO 0.78-1.23%,MgO 1.50-2.63%,ZrO 5.50-10.63%,K 2 O 1.01-1.64%,Na 2 O 1.99-3.85% and l.o.i. 3.73-3.92% by mass.

Description

Production process of glaze material with starlight effect after firing and ceramic tile Technical Field The invention relates to the field of ceramic tile production, in particular to a glaze with starlight effect after firing and a ceramic tile production process. Background In the prior art, the flashing effect of the glazed surface of the ceramic tile is usually achieved by adding flashing dry particles or adding flashing mica sheets, metal dry particles, masonry dry particles and the like with flashing effect into components, forming protrusions on the surface of the ceramic tile, and realizing the flashing effect under the irradiation of a polished light source. The patent No. ZL202210785238.4 discloses a starlight dry particle, a preparation method thereof, a glazed ceramic tile with starlight effect, a preparation method thereof and application thereof, wherein the disclosed glazed ceramic tile with starlight effect has a punctiform starlight effect of a plurality of starlight points, the starlight dry particle protruding part of the surface of the glazed ceramic tile is polished and the inner crystal phase is exposed, the polished position exposes the crystal to form a matt luster, the pit position of the dry particle has a bright luster to form a bright sub-contrast, and the starlight effect is obtained. According to the scheme, a punctiform starlight effect is achieved through the bright sub-contrast caused by polishing, and due to the fact that dry particle pits exist in practice, pits are still formed on the surface of the glaze even after polishing, so that pollution resistance is general. The invention hopes to obtain the glaze material and the ceramic tile with the punctiform starlight effect of the star points through another technical implementation mode, and the polishing and grinding working procedure can be saved. Disclosure of Invention The invention mainly aims to provide a glaze with a starlight effect after firing, the glaze with a punctiform starlight effect can be obtained without polishing after firing, the preparation process is more economical, the technical defect that the starlight ceramic tile in the background art can have the punctiform starlight effect of a plurality of starlight points only through polishing treatment is overcome, the technical defect that the surface of the glaze is uneven to cause common pollution resistance is further improved, and secondly, the invention aims to provide a production process of the ceramic tile with the starlight effect, and the ceramic tile has the beneficial effects. In order to achieve the aim, the invention provides a glaze with starlight effect after firing, which comprises a base glaze and starlight particles which can show starlight effect under the irradiation of a light source after firing, wherein the starlight particles are added into the base glaze in an externally added mode, the two are uniformly mixed to obtain the glaze with starlight effect after firing, the starlight particles are frit particles obtained by melting, water quenching, crushing and screening raw materials, and the mass of the starlight particles is more than or equal to 2.5% of the mass of the base glaze. The starlight particles are crushed into starlight particles with different particle sizes by a pair roller machine, and different from the common grinding and crushing, the pair roller crushing better maintains the edges and corners generated during the crushing of the frit particles so as to generate specular reflection, the starlight particles are externally added in the mode that firstly, the raw materials of the basic glaze are ball-milled into slurry, then the starlight particles are added into the slurry, and then the slurry is stirred and mixed uniformly, the external appearance of the starlight particles is maintained by the external mode, when the external mass ratio of the crushed starlight particles reaches more than 2.5%, the starlight particles are not fused into the glaze due to the fact that the mass ratio is too small in the firing process, the point starlight effect is generated by the broken edges and corners of the starlight particles under the irradiation of a light source under the specular reflection, the generation of the starlight effect is irrelevant to polishing and grinding, and the unique point starlight effect of the star points can be reflected especially under the irradiation of the side face of the light source. In one embodiment, the chemical composition of the starlight particles comprises ：SiO264.5-66.5％,Al2O3 17.5-19.0％,Fe2O3 0-0.2％,TiO2 0-0.1％,CaO 6.0-7.5％,MgO 0.5-1.5％,K2O 3.5-5.5％,Na2O 5.5-7.5％ and 0-1% of ZnO according to mass percentage, wherein the particle size distribution of the starlight particles is that the starlight particles is between 8 and 10% of 63 microns, between 63 and 150 microns, between 63 and 67% of 63 and between 150 and 200 microns, between 23 and 27% of 200 microns, between 0 and 0.05% of 2